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QTEC SERIES PACKAGED HEAT PUMP INSTALLATION INSTRUCTIONS

Models: Q24H1 Q30H1 Q36H1 Q42H1 Q48H1 Q60H1

Bard Manufacturing Company, Inc. Bryan, Ohio 43506 Since 1914 . . . Moving ahead, just as planned.

Manual: Supersedes: File: Date:

2100-519 NEW Vol. II Tab 14 03-30-09

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CONTENTS Getting Other Information and Publications For more information, contact these publishers: .......... 3 QTEC General Information QTEC Model Nomenclature .......................................... 4 Shipping Damage ......................................................... 7 Unit Removal From Skid .............................................. 7 Handling Unit After Removal From Skid ....................... 8 General ......................................................................... 8 Minimum Installation Height ......................................... 8 Duct Work .................................................................. 10 Filters .......................................................................... 10 Fresh Air Intake .......................................................... 11 Service Light ............................................................... 11 Condensate Drain ...................................................... 11 Optional Rear Drain Kits ............................................. 11 Installation Instructions Mounting the Unit ....................................................... 18 Wiring — Main Power ................................................. 19 Wiring — Low Voltage Wiring ..................................... 19 Low Voltage Connections ........................................... 20 Figures Figure 1 Unit Dimensions .......................................... 6 Figure 2 Air Seal on Bottom of Unit ........................... 7 Figure 3 Removal of Unit From Skid ......................... 7 Figure 4 Unit on Appliance Cart for Moving ............... 8 Figure 5 Installation With Free Blow Plenum ............ 9 Figure 6 Ducted Application ....................................... 9 Figure 7 Supply Duct Connections .......................... 10 Figure 8 Filter Location ............................................ 10 Figure 9 Optional Side Drain ................................... 12 Figure 10 Standard Rear Drain .................................. 12 Figure 11 Rear Drain (Top View) ............................... 12 Figure 12A Optional Rear Drain Kit ............................. 13 Figure 12B Optional Rear Drain Kit ............................. 14 Figure 12C Optional Rear Drain Kit ............................. 15 Figure 12D Optional Rear Drain Kit ............................. 16 Figure 13A Unit Mounting - Method 1 .......................... 17 Figure 13B Unit Mounting - Method 2 .......................... 17 Figure 14 Removing Locking Screws from Wheels ... 18 Figure 15 Component Location ................................. 19 Figure 16 Thermostat Plug Terminals ........................ 21 Figure 17A T-Stat Wiring Diagram "X" Option .............. 22 Figure 17B T-Stat Wiring Diagram "X" Option w/Demand 23 Figure 18 Thermostat Wiring Diagram "A" Option .... 24 Figure 19 Thermostat Wiring Diagram "D" Option ... 25 Figure 20 Thermostat Wiring Diagram "H" Option .... 26 Figure 21 Fresh Air Damper Removal ....................... 31 Figure 22 QERV Removal ......................................... 32 Figure 23 CO2 Controller ........................................... 33 Figure 24 Defrost Control Board ................................ 35 Figure 25 Control Disassembly ................................. 39 Figure 26 Winding Test .............................................. 39 Figure 27 Drip Loop ................................................... 39 Figure 28 Fan Blade Setting ...................................... 40 Manual 2100-519 Page 2 of 42

Start Up R-410A Refrigerant Required ........................................ 27 Topping Off System Charge ........................................... 27 Safety Practices ............................................................. 27 Description of Standard Equipment ............................... 28 Optional CFM (Q36, Q42, Q48 & Q60 Only) ................. 28 Important Installer Note .................................................. 28 Phase Monitor ................................................................ 28 Three Phase Scroll Compressor Start Up Information ................................................................ 28 Service Hints .................................................................. 29 Mist Eliminator Service .................................................. 29 Vent Options .................................................................. 30 Sequence of Operation .................................................. 33 Optional Climate Controls Sequence of Operation .............................................................. 33 Pressure Service Ports .................................................. 34 Defrost Cycle ................................................................. 34 Troubleshooting Solid State Heat Pump Control Troubleshooting Procedure ...................................................................... 36 Checking Temperature Sensor ...................................... 37 Troubleshooting GE ECM™ Blower Motors ............. 38-39 Fan Blade Setting Dimensions ...................................... 40 Refrigerant Charge ........................................................ 40 Pressure Charts ...................................................... 41 - 42

Tables Table 1 Table 2 Table 3 Table 4 Table 5 Table 6

Factory Built-In Electric Heat Table .............. 4 Electrical Specifications ................................ 5 Operating Voltage Range ........................... 19 Wall Thermostats ........................................ 21 Troubleshooting .......................................... 36 Temperature vs Resistance of Temperature Sensor ................................... 37 Table 7 Fan Blade Dimensions ............................... 40 Table 8 Super Heat at Compressor ......................... 40 Table 8A Subcooling at Liquid Line ........................... 40 Table 9 Indoor Blower Performance ........................ 40 Table 10 Cooling Pressure ........................................ 41 Table 11 Heating Pressure ........................................ 42

GETTING OTHER INFORMATION AND PUBLICATIONS These publications can help you install the air conditioner or heat pump. You can usually find these at your local library or purchase them directly from the publisher. Be sure to consult current edition of each standard.

FOR MORE INFORMATION, CONTACT THESE PUBLISHERS: ACCA

Air Conditioning Contractors of America 1712 New Hampshire Avenue Washington, DC 20009 Telephone: (202) 483-9370 Fax: (202) 234-4721

ANSI

American National Standards Institute 11 West Street, 13th Floor New York, NY 10036 Telephone: (212) 642-4900 Fax: (212) 302-1286

National Electrical Code ..................... ANSI/NFPA 70

Standard for the Installation ............. ANSI/NFPA 90A of Air Conditioning and Ventilating Systems

Standard for Warm Air ...................... ANSI/NFPA 90B Heating and Air Conditioning Systems

Load Calculation for ....................... ACCA Manual J or Winter and Summer Manual N Air Conditioning

Low Pressure, Low Velocity ........ ACCA Manual D or Duct System Design Manual Q Winter and Summer Air Conditioning

ASHRAE American Society of Heating, Refrigeration, and Air Conditioning Engineers, Inc. 1791 Tullie Circle, N.E. Atlanta, GA 30329-2305 Telephone: (404) 636-8400 Fax: (404) 321-5478

NFPA

National Fire Protection Association Batterymarch Park P.O. Box 9101 Quincy, MA 02269-9901 Telephone: (800) 344-3555 Fax: (617) 984-7057

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QTEC Series General Information QTEC MODEL NOMENCLATURE Q

MODEL NUMBER Q - QTEC

–

HEAT PUMP

KW 0Z - 0KW 05 - 5KW 06 - 6KW 09 - 9KW 10 - 10KW 12 - 12KW 15 - 15KW

REVISION

CAPACITY | 24 - 2 Ton 30 - 2½ Ton 36 - 3 Ton 42 - 3½ Ton 48 - 4 Ton 60 - 5 Ton

SPECIAL UNITS | L - Low Ampacity Circuit

VOLTS & PHASE | A - 230/208/60/1 B - 230/208/60/3 C - 460/60/3

COIL OPTIONS X - Standard

FILTER OPTIONS X - 1-Inch Fiberglass (Standard) F - 2-Inch Fiberglass P - 2-Inch Pleated

INTERNAL CONTROLS X - Standard • High Pressure Switch • Low Pressure Switch • Compressor Time Delay E - Low Ambient Control Q - Outdoor Thermostat R - Low Ambient Control & Outdoor Thermostat

COLOR OPTIONS V - Platinum w/Slate Front (Vinyl) 4 - Gray paint

VENTILATION OPTIONS X - Barometric Fresh Air Damper (Standard) B - Blank-off Plate V - Commercial Ventilator - Motorized w/Exhaust Spring Return P - Commercial Ventilator - Motorized w/Exhaust Power Return R - Energy Recovery Ventilator w/Exhaust

CLIMATE CONTROL OPTIONS X - None A - Electronic/Non Prog/Man C/O D - Electronic/Prog/Man/Auto H - Electronic/Prog/Man/Auto with CO2

TABLE 1 FACTORY BUILT-IN ELECTRIC HEAT TABLE

Models

Q24H1-A Q30H1-A

Q36H1-C Q42H1-C Q48H1-C Q60H1-C

Q30H1-C

240V-1 208V-1 240V-1 208V-1 240V-1 208V-1

480V-3

240V-1 208V-1 240V-1 208V-1

480V-3

B TU H

5.0

16,380 12,290

B TU H

Q30H1-B

Q36H1-B Q42H1-B Q48H1-B Q60H1-B

Q24H1-C

B TU H

Q24H1-B

Q36H1-A Q42H1-A Q48H1-A Q60H1-A

B TU H

16,380 12,290

6.0

20,500

15,360

20,500

15,360

20,500

9.0

30,700 23,000 30,700 23,000

30,700

30,700 23,000

30,700

10.0

15,360 20,500

32,670 24,570

12.0 15.0

Manual 2100-519 Page 4 of 42

32,670 24,570 41,000

30,700

41,000 49,150

36,860 49,150

36,860

49,150

TABLE 2 ELECTRICAL SPECIFICATIONS Single Circuit Model Q24H1-A0Z A 05 A 10 Q24H1-B0Z B 06 B 09 Q24H1-C0Z C 06 C 09 Q30H1-A0Z A 05 A 10 Q30H1-B0Z B 06 B 09 B 12 Q30H1-C0Z C 06 C 09 C 12 Q36H1-A0Z A 05 A 10 4 A 15 Q36H1-B0Z B 06 B 09 5 B 15 Q36H1-C0Z C 06 C 09 5 C 15 Q42H1-A0Z A 05 A 10 4 A 15 Q42H1-B0Z B 06 B 09 5 B 15 Q42H1-C0Z C 06 C 09 5 C 15 Q48H1-A0Z A 05 A 10 4 A 15 Q48H1-B0Z B 06 B 09 5 B 15 Q48H1-C0Z C 06 C 09 5 C 15 Q60H1-A0Z A 05 A 10 5 A 15 Q60H1-B0Z B 09 5 B 15 Q60H1-C0Z C 09 5 C 15

Rated Volts and Phase 230/208-1

230/208-3

460-3

230/208-1

230/208-3

460-3

230/208-1

230/208-3

460-3

230/208-1

230/208-3

460-3

230/208-1

230/208-3

460-3

230/208-1

230/208-3

460-3

No. Field Power Circuits

3 Minimum Circuit Ampacity

1 Maximum External Fuse or Ckt. Brkr.

2 Field Power Wire Size

2 Ground Wire

1 1 1 or 2 1 1 1 1 1 1 1 1 1 or 2 1 1 1 1 1 1 1 1 1 1 1 or 2 1 or 2 1 1 1 1 1 1 1 1 1 1 1 or 2 1 or 2 1 1 1 1 1 1 1 1 1 1 or 2 1 or 2 1 or 2 1 1 1 1 1 1 1 1 1 1 or 2 1 or 2 1 or 2 1 1 1 1 1 1

22 47 72 17 35 44 10 19 23 25 50 75 18 37 45 55 12 21 25 30 31 56 81 83 25 43 52 53 12 21 26 27 34 59 84 84 25 43 52 53 13 22 26 27 38 63 88 88 29 47 56 56 15 24 28 28 45 70 95 95 31 58 58 17 31 31

30 50 80 20 35 45 15 20 25 35 50 80 25 40 45 60 15 25 25 30 45 60 90 90 30 50 60 60 15 25 30 30 50 60 90 90 35 50 60 60 15 25 30 30 50 70 90 90 40 50 60 60 20 25 30 30 60 90 100 100 45 60 60 25 35 35

10 8 4 12 8 8 14 12 10 8 8 4 10 8 8 6 14 10 10 10 8 6 4 4 10 8 6 6 14 10 10 10 8 6 4 4 8 8 6 6 14 10 10 10 8 6 3 3 8 8 6 6 12 10 10 10 8 4 3 3 8 6 6 10 8 8

10 10 8 12 10 10 14 12 10 10 10 8 10 10 10 10 14 10 10 10 10 10 8 8 10 10 10 10 14 10 10 10 10 10 8 8 10 10 10 10 14 10 10 10 10 8 8 8 10 10 10 10 12 10 10 10 10 8 8 8 10 10 10 10 10 10

3 Minimum Circuit Ampacity Ckt. A Ckt. B 22 50 25 50 31 50 33 50 34 50 34 50 38 25 38 50 38 50 45 25 45 50 45 50 -

Dual Circuit 1 Maximum 2 Field External Fuse Power or Ckt. Breaker Wire Size Ckt. A Ckt. B Ckt. A Ckt. B 30 50 10 8 30 50 10 8 45 50 8 8 45 50 8 8 45 50 8 8 45 50 8 8 50 25 8 10 50 50 8 8 50 50 8 8 60 25 8 10 60 50 8 8 60 50 8 8 -

2 Ground Wire Size Ckt. A 10 10 10 10 10 10 10 10 10 10 10 10 -

Ckt. B 10 10 10 10 10 10 10 10 10 10 10 10 -

1 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors. 2 Based on 75°C copper wire. All wiring must conform to the National Electrical Code and all local codes. 3 These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electric Code (latest revision), article 310 for power conductor sizing. Caution: When more than one field power conductor circuit is run through one conduit, the conductors must be derated. Pay special attention to note 8 of table 310 regarding Ampacity Adjustment Factors when more than three conductors are in a raceway. 4 Maximum KW that can operate with heat pump on is 10KW. Other 5KW energizes during emergency heat only. 5 Maximum KW that can operate with heat pump on is 9KW. Other 6KW energizes during emergency heat only.

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Manual 2100-519 Page 6 of 42

Q24H1 Q30H1 Q36H1 Q42H1 Q48H1 Q60H1

FIGURE 1 UNIT DIMENSIONS

SHIPPING DAMAGE Upon receipt of equipment, the carton should be checked for external signs of shipping damage. The skid must remain attached to the unit until the unit is ready for installation. If damage is found, the receiving party must contact the last carrier immediately, preferably in writing, requesting inspection by the carrier’s agent.

FIGURE 2 AIR SEAL UNDER QTEC UNIT

UNIT REMOVAL FROM SKID

WARNING This unit is heavy and requires more than one person to handle and remove from the skid. Check unit wheels to ensure that wheels are locked before removing from skid. Extreme caution must be taken to prevent injury to personnel and damage to the unit.

It is recommended that the unit not be removed from the skid with a forklift since the air seal under the unit could be damaged. See Figure 2. The shipping brackets on each side of the unit must be removed and discarded. See Figure 3-A. The return air grille panel can be removed to provide a place to hold the unit. The unit can be slid forward on the skid until

Air Seal

the front wheels hang over the edge of the skid. See Figure 3-B. The unit can be tipped forward and slid down the edge of the skid until the front wheels touch the ground. See Figure 3-C. The wheels will not roll. They are shipped from the factory locked so they will not roll. The back of the skid will have to be held down to keep it from tipping up. The skid can be slid out from under the unit. The unit can then be set upright.

FIGURE 3 REMOVAL OF UNIT FROM SKID

Hold Skid Down

A Shipping Brackets

B Front Wheels Over Edge

C Front Wheels On Floor Manual Page

2100-519 7 of 42

HANDLING UNIT AFTER REMOVAL FROM SKID

WARNING Exercise extreme caution when pushing the unit on the rollers. Handle and push from the lower 1/3 of the unit. Insure that debris is not on the floor where the unit is to be moved on the rollers. Failure to do so could result in the unit tipping over and causing bodily injury and/ or damage to the unit.

The unit will have to be turned sideways and removed from the skid to fit through a 36" doorway. If the door height allows, the unit can be slid sideways through the door. If the unit cannot be slid through the door, then the unit will have to be put on a cart and tipped down to roll through the door. It is recommended that an appliance cart be used with a strap to hold the unit on the cart. The wheels of the unit must be locked. If the wheels were allowed to roll, the unit could roll off the cart. The unit should always be carted from the left side. This is the side where the compressor is located. See Figure 4.

FIGURE 4 UNIT ON APPLIANCE CART

QTEC UNIT (Right Side)

STRAP APPLIANCE CART

The blade of the appliance cart should be slid under the wheels of the unit. The strap of the appliance cart should be placed around the unit and strapped tightly. Help will be required to tip the unit back onto the cart. The unit can be leaned far enough back to be rolled through the door. Be careful when setting the unit back up to keep from damaging the unit.

GENERAL The equipment covered in this manual is to be installed by trained, experienced service and installation technicians. A QWS-Series wall sleeve supplied as a separate accessory must be ordered and installed with QTec unit. The unit is designed for use with or without duct work. For use without duct work, Plenum Box QPB42 is recommended. These instructions explain the recommended method to install the air cooled self-contained unit and the electrical wiring connections to the unit. These instructions and any instructions packaged with any separate equipment required to make up the entire air conditioning system should be carefully read before beginning the installation. Note particularly “Start Procedure” and any tags and/or labels attached to the equipment. While these instructions are intended as a general recommended guide, they do not supersede any national and/or local codes in any way. Authorities having jurisdiction should be consulted before the installation is made. See Page 3 for information on codes and standards. Size of unit for a proposed installation should be based on heat loss calculation made according to methods of Air Conditioning Contractors of America (ACCA). The air duct should be installed in accordance with the Standards of the National Fire Protection Systems of Other Than Residence Type, NFPA No. 90A, and Residence Type Warm Air Heating and Air Conditioning Systems, NFPA No. 90B. Where local regulations are at a variance with instructions, installer should adhere to local codes.

MINIMUM INSTALLATION HEIGHT COMPRESSOR

The minimum installation height of the unit with a Free Blow Plenum is 8 ft. 6 in. This provides enough clearance for the plenum to be removed. See Figure 5. The minimum installation height for ducted applications is 8 ft. 4½ in. This provides enough clearance to install the duct work. See Figure 6.

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FIGURE 5 INSTALLATION WITH FREE BLOW PLENUM

FIGURE 6 DUCTED APPLICATION

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DUCT WORK Any heat pump is more critical of proper operating charge and an adequate duct system than a straight air conditioning unit. All duct work must be properly sized for the design airflow requirement of the equipment. Air Conditioning Contractors of America (ACCA) is an excellent guide to proper sizing. All duct work or portions thereof not in the conditioned space should be properly insulated in order to both conserve energy and prevent condensation or moisture damage. When duct runs through unheated spaces, it should be insulated with a minimum of one inch of insulation. Use insulation with a vapor barrier on the outside of the insulation. Flexible joints should be used to connect the duct work to the equipment in order to keep the noise transmission to a minimum. The QTEC series heat pump has provision to attach a supply air duct to the top of the unit. Duct connection size is 12 inches x 20 inches. The duct work is field supplied and must be attached in a manner to allow for ease of removal when it becomes necessary to slide the unit out from the wall for service. See Figure 7 for suggested attachment method. FIGURE 7 SUPPLY DUCT CONNECTIONS SUPPLY DUCT TO BE FIELD SUPPLIED

For hot water coil option a QPBHWxx-F for free blow or QPBHWxx-D for ducted airflow is used. When used with a ducted supply, a QCX Cabinet Extension can be used to conceal the duct work above the unit to the ceiling. This extends 20" above the unit for a total height above the floor of 10'-7/8". The unit is equipped with a variable speed indoor blower motor which increases in speed with an increase in duct static pressure. The unit will therefore deliver proper rated air flow up to the maximum ESP shown in Table 9. However, for quiet operation of the air system, the duct static should be kept as low as practical, within the guidelines of good duct design.

FILTERS Two 1-inch throw away filters [(1) 16x16 and (1) 16x20] are supplied with each unit. The filters slide into filter brackets. Refer to Figure 8. The filters are serviced from the inside of the building by opening the hinged door. This door is attached by T-25 torx screw and one locking latch. The internal filter brackets are adjustable to accommodate 2-inch filters. The tabs for the 1-inch filters must be bent down to allow the 2-inch filters to slide in place. FIGURE 8 FILTER LOCATION

ATTACHMENT SCREWS TO BE FIELD SUPPLIED

FILTERS ROOM SIDE OF QTEC UNIT DUCT FLANGE PROVIDED WITH UNIT

NOTE: Unit cabinet, supply air duct and free blow plenum are approved for “0” clearance to combustible material. The QTEC series heat pumps are designed for use with free return (non-ducted) and either free blow with the use of QPB Plenum Box or a duct supply air system. The QPB and QPBHW Plenum Box mounts on top of the unit and has both vertically and horizontally adjustable louvers on the front discharge grille.

Manual 2100-519 Page 10 of 42

RETURN AIR GRILLE

FRESH AIR INTAKE This unit is equipped with a fresh air damper assembly. The damper blade is locked in the closed position when the unit is shipped from the Factory. To allow the damper to operate remove the two plastic locking pins, one on each end of the blade. This will allow for maximum fresh airflow. The damper blade will now open when the indoor blower is operating. If less than maximum fresh airflow is required, reinsert the plastic pins to limit damper blade opening to desired level. Two extra pins are provided (taped to the inside of the assembly) which may be used to hold the blade in some position other than minimum or maximum position. This fresh air assembly is located in the rear of the unit and to gain access to make these adjustments remove the air filter service door. All capacity, efficiency and cost of operation information as required for Department of Energy “Energyguide” Fact Sheets are based upon the fresh air blank-off plate in place and is recommended for maximum energy efficiency. The blank-off plate is available upon request from the factory and is installed in place of the fresh air damper shipped with each unit. For details on energy recovery ventilation see Page 30.

SERVICE LIGHT The unit is equipped with a service light which signals the user that service is required. The light is located in the upper control panel and is visible only when the hinged service/filter access door is open. The Service Unit light indicates that the unit has been shut off by a high or low pressure device. This indicates that the unit needs to be serviced. See Page 33 for details.

CONDENSATE DRAIN There are two drain connections on the unit. The rear drain is the primary drain, and is located on the right lower rear panel of the unit. The optional side drain is located on the bottom right side of the unit. The side drain is shipped with a plug installed.

The rear drain can be used with wall thickness of up to 10 inches where a water trap can be installed between the unit and the interior wall. See Figure 10. The trap cannot extend beyond the edge of the unit or it will interfere with the wall mounting bracket. The drain can be routed through the floor or through the wall. If the drain is routed through the wall, the drain line must be positioned such that it will not interfere with the sleeve flange or the grille. See Figure 11. If the drain is to be routed through an unconditioned space, it must be protected from freezing.

OPTIONAL REAR DRAIN KITS Optional Rear Drain Kit, Bard Model QCDS48A, is also available for these products. The optional rear drain kit offers multiple benefits that include the following: • Allows unit to be rolled away from the sleeve without having to disconnect any hard plumbing connections. • Allows indoor coil condensate to be easily connected to Rear Drain Box while bypassing the outdoor coil drain pan. This aids in minimizing the potential for biological growth to occur by minimizing the standing water and exposing it to warm temperatures. See Figures 12A, 12B, 12C and 12D. The drain box permanently mounts onto the wall sleeve and is then either piped directly outdoors, or can be piped vertically. The Q/Tec unit is then equipped with fittings on the rear of the unit that slide into the drain box as it is wheeled towards the wall sleeve. NOTE: On models equipped with a refrigerant subcooler in the lower drain pan may experience a 23% decrease in cooling performance and efficiency when the indoor condensate is routed around the outdoor coil drain pan/subcooler assembly. Unit rated performance and efficiency are with the indoor condensate routed to the outdoor coil pan. There is also a heated version of the rear drain box available (Model #QCDS48H) for installation in northern climates where freezing may occur.

The side drain requires a water trap for proper drainage. See Figure 9. The drain can be routed through the floor or through the wall. If the drain is to be routed through an unconditioned space, it must be protected from freezing. The drain line must be able to be removed from the unit if it is necessary to remove the unit from the wall. When the side drain is used, the plug must be removed and installed in the rear drain outlet.

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FIGURE 9 OPTIONAL SIDE DRAIN (SIDE VIEW) INSTALLATION

FIGURE 10 STANDARD REAR DRAIN

QTEC UNIT

FIGURE 11 REAR DRAIN (TOP VIEW) DRAIN LINE

WALL (MAXIMUM 10" FOR REAR DRAIN)

SLEEVE

COUPLINGS NOT SHOWN BUT RECOMMENDED FOR EASE OF REMOVABILITY FOR SERVICE.

WALL BRACKET WATER TRAP

UNIT

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DRAIN BOX

CAULK AROUND TUBE

OVERFLOW TUBE

WALL SLEEVE

FIGURE 12A

MIS-2469

FIGURE 12B

PLUG INSTALLED IN SIDE Q/Tec DRAIN

REAR DRAIN CONNECTION IN Q/Tec PRODUCT

3/4" PLASTIC PIPE NIPPLE SUPPLIED WITH DRAIN BOX KIT (APPLY TEFLON TAPE TO THREADS)

IMPORTANT ! 1/2" SLIP X 1/2" SLIP X 3/4" NPT TEE SUPPLIED WITH DRAIN BOX KIT (TIGHTEN THREADS SO TEE IS HORIZONTAL TO FLOOR)

MIS-2470

Manual 2100-519 Page 14 of 42

FIGURE 12C

REMOVE KNOCK-OUT FOR INDOOR DRAIN HOSE CONNECTOR

(If Used) MIS-2471

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FIGURE 12D

DRAIN HOSE FROM INDOOR DRAIN PAN.

MOVE HOSE FROM ATTACHMENT IN LOWER DRAIN PAN AND SLIDE ONTO DRAIN BOX BARB FITTING, SECURING WITH SUPPLIED CLAMP IF OUTDOOR PAN IS BYPASSED. ( WILL REDUCE RISK OF ALGAE GROWTH IN THE OUTDOOR PAN BUT AT A SLIGHT COOLING PERFORMANCE REDUCTION OF 2-3% ) MIS-2472

Manual 2100-519 Page 16 of 42

FIGURE 13A UNIT MOUNTING - METHOD 1 ENLARGED VIEW OF MOUNTING BRACKET SHOWING SLEEVE TO CABINET ATTACHMENT

SIDE TRIM (2 PCS.)

MOUNTING BRACKET

QWS Series Wall Sleeve

WALL SLEEVE

SIDE TRIM (2 PCS.) #8 SCREW PROVIDED (LIGHT COLOR)

MOUNTING BRACKET

CABINET SIDE PANEL #10 HEX HEAD SCREW PROVIDED

BOTTOM TRIM PIECE

BOTTOM TRIM EXTENSION

FIGURE 13B UNIT MOUNTING - METHOD 2

Return Grille Sleeve

Washer

Stud

Nut

Condenser Door (Removed) MIS-2689

Lower Control Panel Manual Page

2100-519 17 of 42

INSTALLATION INSTRUCTIONS MOUNTING THE UNIT When installing a QTEC unit near an interior wall on the left side, a minimum of 8 inches is required; 12 inches is preferred. When installing a QTEC unit near an interior wall on the right side, a minimum of 18 inches is required as additional space is required to connect the side drain. If the rear condensate drain kit QCDS48 is used the minimum can be reduced to 8 inches. This clearance is required to allow for the attachment of the unit to the sleeve and side trim pieces to the wall. This unit is to be secured to the wall sleeve with mounting brackets provided. The unit itself, the supply duct and the free blow plenum are suitable of “0” clearance to combustible material. Following are the steps for mounting the QTEC. For reference see Figure 13A for external mounting bracket or 13B for internal bolt secured bracket (recommended). 1. Attach mounting brackets to the wall sleeve with screws provided. Either use external mounting bracket (Fig. 13A) or internal bolt bracket (Fig. 13B). 2. Position the unit in front of the sleeve with the condenser section toward the sleeve. 3. Remove the locking screws from the wheels. Refer to Figure 14. 4. Roll the unit into the sleeve. Make sure to check both sides of the unit as it is being rolled to keep it centered in the sleeve. Also check the

alignment to the mounting brackets. This unit must be level from side to side. If adjustments are necessary, shim up under the rollers with sheets of steel or any substance that is not affected by moisture. 5. Make sure the gasket on the rear of the unit is touching the sleeve across the top and down both sides. This is a rain water seal. 6. Secure the mounting brackets to the unit with screws provided, #10 hex head sheet metal screws (Figure 13A) or use nut and washer to secure sleeve (Figure 13B). 7. Bottom trim extensions are provided for use when wall is less than 14 inches but greater than 10.5 inches. Secure to wall with screws (not provided). 8. Attach the bottom trim piece to the unit with the screws provided (dark colored). 9. Position side trim pieces to wall and attach with field supplied screws. There are two long pieces and two short pieces supplied. The long pieces are to enclose the gap behind the unit. The short pieces are to fill the gap behind the cabinet extension or the free blow plenum box. They may be cut to suit your ceiling height or overlap the unit side trim. There is sufficient length to trim up to a 10'2" ceiling. NOTE: If the exterior wall thickness is between 5 inches to 10.5 inches, a side trim extension piece kit, model QSTX42, is available.

FIGURE 14 REMOVING LOCKING SCREWS FROM WHEELS

REMOVE SCREWS FROM WHEELS BEFORE ROLLING INTO PLACE

Manual 2100-519 Page 18 of 42

WIRING – MAIN POWER Refer to the unit rating plate and/or Table 2 for wire sizing information and maximum fuse or “HACR Type” circuit breaker size. Each unit is marked with a “Minimum Circuit Ampacity”. This means that the field wiring used must be sized to carry that amount of current. Depending on the installed KW of electric heat, there may be two field power circuits required. If this is the case, the unit serial plate will so indicate. All models are suitable only for connection with copper wire. Each unit and/or wiring diagram will be marked “Use Copper Conductors Only”. These instructions MUST BE adhered to. Refer to the National Electrical Code (NEC) for complete current carrying capacity data on the various insulation grades of wiring material. All wiring must conform to NEC and all local codes. The electrical data lists fuse and wire sizes (75°C copper) for all models, including the most commonly used heater sizes. Also shown are the number of field power circuits required for the various models with heaters. The unit rating plate lists a “Maximum Time Delay Relay Fuse” or “HACR Type” circuit breaker that is to be used with the equipment. The correct size must be used for proper circuit protection, and also to assure that there will be no nuisance tripping due to the momentary high starting current of the compressor motor. The disconnect access door on this unit may be locked to prevent unauthorized access to the disconnect.

The field wiring connections are located behind the top and hinged panel in the circuit breaker panel. See Figure 15.

WIRING – LOW VOLTAGE WIRING 230/208V, 1 PHASE AND 3 PHASE EQUIPMENT DUAL PRIMARY VOLTAGE TRANSFORMERS.

All Equipment leaves the factory wired on 240V tap. For 208V operation, reconnect from 240V to 208V tap. The acceptable operating voltage range for the 240 and 208V taps are as noted in Table 3. TABLE 3 OPERATING VOLTAGE RANGE TAP

RANGE

240V

253 – 216

208V

220 – 187

NOTE: The voltage should be measured at the field power connection point in the unit and while the unit is operating at full load (maximum amperage operating condition). The standard Climate Control Option X is a remote thermostat connection terminal block. See Figure 17A for wiring diagram. Compatible thermostats are listed in Table 4. See Fig. 17B for Remote CO2 Sensor Connection. The Climate Control Option A is an electronic, nonprogrammable manual or auto changeover thermostat. The subbase of the thermostat is factory wired to the front panel of the unit. See Figure 18 for wiring diagram. Compatible for use with Bard CS2000A* Controller and Energy Recovery Ventilator.

FIGURE 15 COMPONENT LOCATION SIDE FIELD WIRE ENTRANCE ELECTRIC HEATERS

UNIT MOUNTED THERMOSTAT LOCATION

See Start Up section for information on three phase scroll compressor start-ups.

REMOTE THERMOSTAT TERMINAL BLOCK INDOOR BLOWER

DEHUMIDIFICATION CONTROL (OPTIONAL) CIRCUIT BREAKER PANEL & CONTROLS

The Climate Control Option D is an electronic, programmable thermostat. The subbase of the thermostat is factory wired to the front panel of the unit. See Figure 19 for wiring diagram. Compatible for use with Energy Recovery Ventilator or Economizer. The Climate Control Option H is an electronic, programmable thermostat and a CO2 controller. The subbase of the thermostat and CO2 controller are factory wired to the front panel of the unit. See Figure 20 for wiring diagram. NOTE: On option X or A the CS2000A* (or other field provided means to control ventilation) must be used if any of the motorized ventilation options are installed.

LOWER CONTROL PANEL

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LOW VOLTAGE CONNECTIONS These units use a grounded 24 volt AC low voltage circuit. The “R” terminal is the hot terminal and the “C” terminal is grounded. “G” terminal or pins 6 and 1 of P2 are the fan inputs. Both must be energized for proper fan operation. This is done automatically in the factory installed climate control options. If the climate control option is abandoned and connections are made directly to P2 both pins 6 and 1 of P2 must be energized for proper operation. “Y” terminal or pin 7 of P2 is the compressor input. “B” terminal or pin 8 of P2 is the reversing valve input. The reversing valve must be energized for heating mode. “R” terminal or pin 10 of P2 is 24 VAC hot. “C” terminal or pin 11 of P2 is 24 VAC grounded. “L” terminal or pin 12 of P2 is compressor lockout output. This terminal is activated on a high or low pressure trip by the electronic heat pump control. This is a 24 VAC output. “W2” terminal or pin 9 of P2 is second stage heat (if equipped). If the unit is equipped with an optional hot water coil plenum box or electric heat these will be energized by this terminal. “O1” terminal of pin 5 of P2 is the ventilation input. This terminal energizes any factory installed ventilation option. “E” terminal or pin 3 of P2 is the emergency heat input. This terminal energizes the emergency heat relay.

NOTE: For total and proper control using DDC, a total of 6 controlled outputs are required (5 if no ventilation system is installed). For proper system operation under Emergency Heat conditions. Where the compressor needs to be deactivated, the B-W2-E outputs need to be energized. Removing the Y (compressor) signal alone turns the compressor off, but does not activate the additional circuitry embedded in the heat pump for proper and complete operation.

LOW VOLT AGE CONNECT IONS FOR DDC CONT ROL Fan Only

Energize G

Cooling Mode

Energize Y, G

Heat Pump Heating

Energize Y, G, B

2nd Stage Heating (if employed)

Energize G, W2

Ventilation

Energize G, O1

Emergency Heat

Energize B, W2, E

GENERAL This unit is equipped with a variable speed ECM motor. The motor is designed to maintain rated airflow up to the maximum static allowed. It is important that the blower motor plugs are not plugged in or unplugged while the power is on. Failure to remove power prior to unplugging or plugging in the motor could result in motor failure.

CAUTION Do not plug in or unplug blower motor connectors while the power is on. Failure to do so may result in motor failure.

Manual 2100-519 Page 20 of 42

TABLE 4 WALL THERMOSTATS Thermostat

Predominant Features

8403-060 (1120-445)

3 stage Cool; 3 stage Heat Programmable/Non-Programmable Electronic HP or Conventional Auto or Manual changeover

2 stage Cool; 2 stage Heat 8403-058 Electronic Non-Programmable (TH5220D1151) HP or Conventional Auto or Manual changeover 8403-056 Carbon Dioxide Sensor with LCD for (C7232A1008) Sensor Readings

FIGURE 16

MIS-1285

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FIGURE 17A REMOTE THERMOSTAT WIRING DIAGRAM “X” THERMOSTAT OPTION

REMOTE THERMOSTAT WIRING DIAGRAM "X" THERMOSTAT OPTION Thermostat #TH522001151 Bard Part #8403-058

Thermostat Bard Part #8403-060

Low Voltage Terminal Block

W1/E

Plug #2 Orange

Orange

Red/Yellow

Yellow

O/B

Blue

Aux

Brown

Red/White

Black/White

5 6 7 8 9 10

2 3 4

Brown/White

11 12 MIS-2687

Factory installed jumper.

VENTILATOR OR DAMPER

NOTE: On option X or A the CS2000A* (or other field provided means to control ventilation) must be used if any of the motorized ventilation options are installed.

Manual 2100-519 Page 22 of 42

FIGURE 17B REMOTE THERMOSTAT WIRING DIAGRAM “X” THERMOSTAT OPTION WITH DEMAND VENTILATION

Optional CO2 Controller #C7232A1008 Bard Part #8403-056 Red 24VAC

Black 1

Yellow

Analog Out

Brown

2 4

Relay Part #8201-062 2

Orange Green

Plug #2 G

W1/E

Orange

1 2 3

Red/Yellow

4 Brown/White

5 6

W1 Y1

Yellow

O/B

Blue

Aux

Brown

Red/White

Black/White

Thermostat #TH522001151 Bard Part #8403-058

R Rc

C Thermostat Bard Part #8403-060

7 8 9 10

11 12

Low Voltage Terminal Block

Factory installed jumper.

Mount relay in low voltage terminal block compartment.

Relay is field installed and required if demand ventilation control does not supply blower "G" signal when ventilation signal "O1" is supplied.

MIS-2688

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FIGURE 18 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM “A” THERMOSTAT OPTION

Plug #2

Temp. and Humidity Controller PART #8403-060

Orange 1 Brown/White 2 Red/Yellow 3 Purple 4

W1/E D/YO

Orange

5 6

7 8 9

Yellow Blue Brown Red/White

Black/White

O/B W2

10 11 12 4102-062

NOTE: On option X or A the CS2000A* (or other field provided means to control ventilation) must be used if any of the motorized ventilation options are installed.

Manual 2100-519 Page 24 of 42

FIGURE 19 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM “D” THERMOSTAT OPTION

Temp. and Humidity Controller PART #8403-060 W1/E

Plug #2 Orange Red/Yellow Brown/White

1 2 3 4

Orange

5 6

7 8 9

Yellow Blue Brown Red/White

Black/White

O/B W2

10 11 12 4102-060

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FIGURE 20 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM “H” THERMOSTAT OPTION

Red

Analog Out

Red/White

Black

Black/White 1

Yellow Brown

Black/White

Orange Green

2 4

Relay Part #8201-062

Brown/White

24VAC

Red/White

CO2 Controller Part #8403-056

Orange Orange Red/Yellow

W1/E

Plug #2 1 2 3 4

A G Temp. and Humidity Y1 Controller Part #8403-060 O/B

4102-059

Manual 2100-519 Page 26 of 42

Brown/White

5 6

Orange Yellow Blue

Brown

Red/White

Black/White

7 8 9 10 11 12

START UP THESE UNITS REQUIRE R-410A REFRIGERANT AND POLYOL ESTER OIL.

REMEMBER: When adding R-410A refrigerant, it must come out of the charging cylinder/tank as a liquid to avoid any fractionation, and to insure optimal system performance. Refer to instructions for the cylinder that is being utilized for proper method of liquid extraction.

GENERAL: 1. Use separate service equipment to avoid cross contamination of oil and refrigerants. 2. Use recovery equipment rated for R-410A refrigerant. 3. Use manifold gauges rated for R-410A (800 psi/250 psi low).

WARNING Failure to conform to these practices could lead to damage, injury or death.

4. R-410A is a binary blend of HFC-32 and HFC-125. 5. R-410A is nearly azeotropic - similar to R-22 and R-12. Although nearly azeotropic, charge with liquid refrigerant. 6. R-410A operates at 40-70% higher pressure than R-22, and systems designed for R-22 cannot withstand this higher pressure. 7. R-410A has an ozone depletion potential of zero, but must be reclaimed due to its global warming potential. 8. R-410A compressors use Polyol Ester oil. 9. Polyol Ester oil is hygroscopic; it will rapidly absorb moisture and strongly hold this moisture in the oil. 10. A liquid line dryer must be used - even a deep vacuum will not separate moisture from the oil. 11. Limit atmospheric exposure to 15 minutes. 12. If compressor removal is necessary, always plug compressor immediately after removal. Purge with small amount of nitrogen when inserting plugs.

TOPPING OFF SYSTEM CHARGE If a leak has occurred in the system, Bard Manufacturing recommends reclaiming, evacuating (see criteria above), and charging to the nameplate charge. If done correctly, topping off the system charge can be done without problems. With R-410A, there are no significant changes in the refrigerant composition during multiple leaks and recharges. R-410A refrigerant is close to being an azeotropic blend (it behaves like a pure compound or single component refrigerant). The remaining refrigerant charge, in the system, may be used after leaks have occurred and then “top-off” the charge by utilizing the charging charts on the inner control panel cover as a guideline.

SAFETY PRACTICES: 1. Never mix R-410A with other refrigerants. 2. Use gloves and safety glasses. Polyol Ester oils can be irritating to the skin, and liquid refrigerant will freeze the skin. 3. Never use air and R-410A to leak check; the mixture may become flammable. 4. Do not inhale R-410A – the vapor attacks the nervous system, creating dizziness, loss of coordination and slurred speech. Cardiac irregularities, unconsciousness and ultimate death can result from breathing this concentration. 5. Do not burn R-410A. This decomposition produces hazardous vapors. Evacuate the area if exposed. 6. Use only cylinders rated DOT4BA/4BW 400. 7. Never fill cylinders over 80% of total capacity. 8. Store cylinders in a cool area, out of direct sunlight. 9. Never heat cylinders above 125°F. 10. Never trap liquid R-410A in manifold sets, gauge lines or cylinders. R-410A expands significantly at warmer temperatures. Once a cylinder or line is full of liquid, any further rise in temperature will cause it to burst.

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START UP DESCRIPTION OF STANDARD EQUIPMENT Solid State Electronic Heat Pump Control Provides efficient 30-minute defrost cycle. A thermistor sensor and speed up terminal for service along with a 10-minute defrost override are standard on the electronic heat pump control. High / Low Pressure Switch Provides refrigerant circuit high pressure and loss of charge protection. Includes lockout circuit that is resettable from room thermostat. Five Minute Compressor Time Delay Provides short cycle protection for the compressor which extends compressor life. Built into the electronic heat pump control as standard. Service Light One service light indicates when service is required. • Check System – detects high or low pressure switch operation for compressor protection.

OPTIONAL CFM (Q36H1, Q42H1, Q48H1 AND Q60H1 ONLY) These units are shipped from the factory set to operate at the optional CFM level shown in Table 9. This provides lower operating sound levels for non-ducted, free discharge applications. This CFM level will reduce the system capacity performance by approximately 2% at the same energy efficiency. Rated CFM is required for ducted applications for maximum performance rating. To obtain full CFM on these models, connect jumper wire as follows: 1. Disconnect all power to the unit. Failure to do so may result in damage to the motor. 2. Open return air service panel 3. Open inner control panel cover 4. Locate low voltage terminal strip. There is a pink jumper wire with both ends attached to terminal marked “G2”. Move one end of this jumper to terminal “Y”. 5. Reverse steps to reassemble.

IMPORTANT INSTALLER NOTE For improved start-up performance, wash the indoor coil with a dishwasher detergent. Manual 2100-519 Page 28 of 42

PHASE MONITOR All units with three phase scroll compressors are equipped with a 3 phase line monitor to prevent compressor damage due to phase reversal. The phase monitor in this unit is equipped with two LEDs. If the Y signal is present at the phase monitor and phases are correct the green LED will light and the compressor contactor is allowed to energize. If phases are reversed, the red fault LED will be lit and compressor operation is inhibited. If a fault condition occurs, reverse two of the supply leads to the unit. Do not reverse any of the unit factory wires as damage may occur.

THREE PHASE SCROLL COMPRESSOR START UP INFORMATION Scroll compressors, like several other types of compressors, will only compress in one rotational direction. Direction of rotation is not an issue with single phase compressors since they will always start and run in the proper direction. However, three phase compressors will rotate in either direction depending upon phasing of the power. Since there is a 50-50 chance of connecting power in such a way as to cause rotation in the reverse direction, verification of proper rotation must be made. Verification of proper rotation direction is made by observing that suction pressure drops and discharge pressure rises when the compressor is energized. Reverse rotation also results in an elevated sound level over that with correct rotation, as well as, substantially reduced current draw compared to tabulated values. Verification of proper rotation must be made at the time the equipment is put into service. If improper rotation is corrected at this time there will be no negative impact on the durability of the compressor. However, reverse operation for even one hour may have a negative impact on the bearing due to oil pump out. All three phase scroll compressors used in the QTEC series are wired identically internally. As a result, once the correct phasing is determined for a specific system or installation, connecting properly phased power leads to the same Fusite terminal should maintain proper rotation direction. The direction of rotation of the motor may be changed by reversing any two line connections to the unit.

SERVICE HINTS 1. Caution user to maintain clean air filters at all times. Also, not to needlessly close off supply air registers. This may reduce airflow through the system, which shortens equipment service life as well as increasing operating costs and noise levels. 2. Switching to heating cycle at 75°F or higher outside temperature may cause a nuisance trip of the remote reset high pressure switch. Turn thermostat off, then on to reset the high pressure switch. 3. The heat pump wall thermostats perform multiple functions. Be sure that all function switches are correctly set for the desired operating mode before trying to diagnose any reported service problems. 4. Check all power fuses or circuit breakers to be sure they are the correct rating. 5. Periodic cleaning of the outdoor coil to permit full and unrestricted airflow circulation is essential. 6. Some service requires the need to remove the unit from the wall including replacement of the indoor coil and/or the outdoor coil. Also, servicing the outdoor fan motor or fan blade will require removing the unit from the wall if the unit is installed at a height that is not easily accessible from the outside of the building. In order to remove the unit from the wall the following procedure must be used: a. Turn off power to the unit at the remote location. Some units may have more than one power supply. b. Disconnect field wiring at unit terminal block and remove from unit. c. Disconnect condensate drain. d. Remove the lower skirting around the unit.

g. Remove screws that attach the duct work to the unit flanges. This unit is equipped with four rollers mounted to the base. For ease of pulling unit out from the wall, you may want to remove the bottom service door which requires removal of the return air panel, and grip the front flange of the base pan then pull straight out. 7. Annual maintenance is required to make sure that all of the systems are functioning properly. a. Check to make sure that the drains are not obstructed in any way. b. Remove any debris in the condenser section of the unit. c. Inspect and clean mist eliminator as described below. d. Inspect and wash outdoor coil as necessary.

MIST ELIMINATOR SERVICE A mist eliminator is supplied with the wall sleeve. The mist eliminator is constructed of an aluminum frame and mesh. The mist eliminator is located in the top section of the wall sleeve and can be removed from the inside of the building without removing the unit from the wall. This requires that the ventilation package be removed. It is recommended that the mist eliminator be inspected annually and serviced as required. The mist eliminator can be inspected from the outside of the building by looking through the outdoor grille. The mist eliminator can be serviced from the outside by using a vacuum cleaner. The outdoor grille must be removed. Use the vacuum to remove dirt and debris from the surface of the mist eliminator. If additional cleaning is required, the mist eliminator will have to be removed from the sleeve.

e. Remove wall mounting brackets from wall on each side of the unit and/or remove the internal bolts in the lower section securing unit to wall sleeve.

The ventilation package will have to be removed to gain access to the mist eliminator. If the blank off plate option is used, it is not necessary to service the mist eliminator. The steps necessary to remove each of the vent options are listed on the following pages.

f. If unit is attached to duct work, remove upper cabinet extension by removing the top center screw only from the cabinet side panel.

The mist eliminator can be cleaned by washing with soap and water. The excess water should be shaken off the mist eliminator before it is reinstalled.

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VENT OPTIONS BAROMETRIC FRESH AIR DAMPER (Standard) Before starting, make sure the power has been turned off. The return air grille panel must be removed. The fresh air damper assembly can be seen on the back of the unit. See Figure 21.

QTEC R ENERGY RECOVERY VENTILATOR (Option) Before starting, make sure that the power has been turned off. The return air grille panel must be removed. The energy recovery ventilator (QERV) can be seen after the panel has been removed. To gain access to the mist eliminator, the QERV must be removed. See Figure 22.

1. The fresh air damper is attached to the back of the unit with one screw on either side of the assembly. Both of the screws must be removed.

1. The front fill plate of the QERV must be removed. There is one screw on either side of the plate. Remove these screws and remove the plate.

2. Once the mounting screws are removed, tilt the assembly down and lift it out.

2. On either side of the QERV there are mounting screws that hold the QERV in place. Remove both of these screws.

The mist eliminator can be seen through the opening. The mist eliminator must be raised up and the bottom can be pulled toward the front of the unit. COMMERCIAL ROOM VENTILATOR (Option) Before starting, make sure the power has been turned off. The return air grille panel must be removed. The commercial room ventilator (CRV) can be seen after the panel has been removed. The CRV must be removed to gain access to the mist eliminator.

3. Underneath the heat recovery cassette there is a power connector for the lower blower assembly. To disconnect this plug, the tabs on both sides of the plug must be squeezed to release the plug. While squeezing the tabs, pull the plug out of the socket. 4. The QERV is plugged into the unit in the right side of the unit. Both of these plugs must be disconnected to remove the QERV. Squeeze the tabs on the sides of the connector and pull straight out.

1. The two mounting screws in the front of the CRV must be removed.

5. Slide the QERV assembly straight out of the unit, being careful not to let the cassette slide out of the QERV.

2. The power connectors for the CRV (located on the right side of the unit) must be disconnected. Squeeze the tabs on the sides of the connector and pull straight out. Unplug both of the connectors.

The mist eliminator can be seen through the opening in the back of the unit. The mist eliminator must be raised up and the bottom can be pulled toward the front of the unit and removed.

3. Slide the CRV straight out of the unit. The mist eliminator can be seen through the opening in the back of the unit. The mist eliminator must be raised up and the bottom can be pulled toward the front of the unit and removed.

Manual 2100-519 Page 30 of 42

FIGURE 21 FRESH AIR DAMPER REMOVAL

MOUNTING SCREW

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FIGURE 22 QERV REMOVAL

POWER CONNECTORS

MOUNTING SCREWS

LOWER BLOWER ASSEMBLY POWER CONNECTOR

FRONT FILL

Manual 2100-519 Page 32 of 42

SEQUENCE OF OPERATION COOLING – Circuit R-Y makes at thermostat pulling in compressor contactor, starting the compressor and outdoor motor. The G (indoor motor) circuit is automatically completed on any call for cooling operation or can be energized by manual fan switch on subbase for constant air circulation. HEATING – A 24V solenoid coil on reversing valve controls heating cycle operation. Two thermostat options, one allowing “Auto” changeover from cycle to cycle and the other constantly energizing solenoid coil during heating season, and thus eliminating pressure equalization noise except during defrost, are to be used. On “Auto” option a circuit is completed from R-W1 and R-Y on each heating “on” cycle, energizing reversing valve solenoid and pulling in compressor contactor starting compressor and outdoor motor. R-G also make starting indoor blower motor. Heat pump heating cycle now in operation. The second option has no “Auto” changeover position, but instead energizes the reversing valve solenoid constantly whenever the system switch on subbase is placed in “Heat” position, the “B” terminal being constantly energized from R. A Thermostat demand for heat completes R-Y circuit, pulling in compressor contactor starting compressor and outdoor motor. R-G also make starting indoor blower motor.

High / Low Pressure control provides protection for the compressor. In the event system pressures go above 600 PSI or below 15 PSI in either cooling or heating mode, the compressor will be stopped. This will activate the red light located in the control panel. The lockout circuit will hold compressor off line. When the system problem is corrected, the unit operation can be restored by turning of the main power supply off and then back on, or reset the room thermostat. The low pressure control has a bypass to eliminate nuisance lockout on cold start up.

The Climate Control Option “D” is an electronic, programmable thermostat. The thermostat can be set in the heat, cool or automatic mode. When the thermostat is set in the heat mode, it can heat only to maintain the temperature set on the thermostat. When the thermostat is set in the cool mode, it can cool only to maintain the temperature set on the thermostat. When the thermostat is set in the automatic mode, the thermostat can change automatically to the heat or cool modes to maintain the temperature set on the thermostat. The Climate Control Option “H” is an electronic, programmable thermostat and a CO2 controller. The thermostat can be set in the heat, cool or automatic mode. When the thermostat is set in the heat mode, it can heat only to maintain the temperature set on the thermostat. When the thermostat is set in the cool mode, it can cool only to maintain the temperature set on the thermostat. When the thermostat is set in the automatic mode, the thermostat can change automatically to the heat or cool modes to maintain the temperature set on the thermostat. The CO2 controller will energize the vent option and the ID blower when the room CO2 levels rise over set level. Default CO2 set point is 1000 ppm. See Figure 23.

FIGURE 23 CO2 CONTROLLER – FACTORY SET TO 1000 PPM

The bypass timer should be set to 120 seconds and this is to assure there is no nuisance tripping of the lowpressure control during startup in heating mode under cold weather conditions. See Defrost Control Board Figure 24.

OPTIONAL CLIMATE CONTROLS SEQUENCE OF OPERATION

OFF ON OFF ON 0-100% 20-100% VOLTAGE CURRENT

SW2SW1OUT AN

"SW2" SET TO ON "SW1" SET TO ON

"AN" SET TO VOLTAGE "OUT" SET TO 20-100%

The Climate Control Option “A” is an electronic, nonprogrammable manual or auto changeover thermostat. The thermostat may be manually set to heat or cool mode. The thermostat will maintain the temperature set on the thermostat in the mode in which it is set.

MIS-2667

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PRESSURE SERVICE PORTS High and low pressure service ports are installed on all units so that the system operating pressures can be observed. Pressure tables can be found later in the manual covering all models. It is imperative to match the correct pressure table to the unit by model number. Upper and lower service doors must be attached to obtain proper reading.

DEFROST CYCLE The defrost cycle is controlled by temperature and time on the solid state heat pump control. See Figure 24. When the outdoor temperature is in the lower 40°F temperature range or colder, the outdoor coil temperature is 32°F or below. This coil temperature is sensed by the coil temperature sensor mounted near the bottom of the outdoor coil. Once coil temperature reaches 30°F or below, the coil temperature sensor sends a signal to the control logic of the heat pump control and the defrost timer will start. After 30 minutes (Default Setting) of run time at 30°F or below, the heat pump control will place the system in the defrost mode. During the defrost mode, the refrigerant cycle switches back to the cooling cycle, the outdoor motor stops, electric heaters are energized, and hot gas passing through the outdoor coil melts any accumulated frost. When the temperature rises to approximately 57°F, the coil temperature sensor will send a signal to the heat pump control which will return the system to heating operations automatically. If some abnormal or temporary condition such as a high wind causes the heat pump to have a prolonged defrost cycle, the heat pump control will restore the system to heating operation automatically after 10 minutes. The heat pump defrost control board has an option of 30, 60 or 90-minute setting. All models are shipped from the factory on the 30-minute pin. If special circ*mstances require a change to another time, remove the wire from the 30-minute terminal and reconnect to the desired terminal. The manufacturer’s recommendation is for 30-minute defrost cycles. Refer to Figure 24. There is a cycle speed up jumper on the control. This can be used to reduce the time between defrost cycle operation without waiting for time to elapse. Use a small screwdriver or other metallic object, or another ¼ inch QC, to short between the SPEEDUP terminals to accelerate the HPC timer and initiate defrost.

Manual 2100-519 Page 34 of 42

Be careful not to touch any other terminals with the instrument used to short the SPEEDUP terminals. It may take up to 10 seconds with the SPEEDUP terminals shorted for the speedup to be completed and the defrost cycle to start. As soon as the defrost cycle kicks in remove the shorting instrument from the SPEEDUP terminals. Otherwise the timing will remain accelerated and run through the 1-minute minimum defrost length sequence in a matter of seconds and will automatically terminate the defrost sequence. There is an initiate defrost jumper (sen jump) on the control that can be used at any outdoor ambient during the heating cycle to simulate a 0° coil temperature. This can be used to check defrost operation of the unit without waiting for the outdoor ambient to fall into the defrost region. By placing a jumper across the SEN JMP terminals (a ¼ inch QC terminal works best) the defrost sensor mounted on the outdoor coil is shunted out and will activate the timing circuit. This permits the defrost cycle to be checked out in warmer weather conditions without the outdoor temperature having to fall into the defrost region. In order to terminate the defrost test the SEN JMP jumper must be removed. If left in place too long, the compressor could stop due to the high pressure control opening because of high pressure condition created by operating in the cooling mode with outdoor fan off. Pressure will rise fairly fast as there is likely no actual frost on the outdoor coil in this artificial test condition. There is also a 5-minute compressor time delay function built into the HPC. This is to protect the compressor from short cycling conditions. The board’s LED will have a fast blink rate when in the compressor time delay. In some instances, it is helpful to the service technician to override or speed up this timing period, and shorting out the SPEEDUP terminals for a few seconds can do this. Low Pressure Switch Bypass Operation - The control has a selectable (SW1) low pressure switch bypass set up to ignore the low pressure switch input during the first (30, 60, 120 or 180 seconds) of “Y” operation. Factory setting is 120 seconds. After this period expires, the control will then monitor the low pressure switch input normally to make sure that the switch is closed during “Y” operation.

FIGURE 24 DEFROST CONTROL BOARD

LOW PRESSURE BYPASS TIMER SWITCH (FACTORY SETTING 120 SECONDS) SW SW 1 2 TIME (SEC) OFF OFF 30 ON OFF 60 OFF ON 120* ON ON 180

ACCUMULATED RUN TIME SELECTOR (FACTORY SETTING 30 MIN.)

MIS-2684

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TROUBLESHOOTING SOLID STATE HEAT PUMP CONTROL TROUBLESHOOTING PROCEDURE 1. NOTE: A thorough understanding of the defrost cycle sequence is essential. Review that section earlier in this manual prior to troubleshooting the control. Turn on AC power supply to unit. 2. Turn thermostat blower switch to “fan on” – the indoor blower should start. (If it doesn’t, troubleshoot indoor unit and correct problem.) 3. Turn thermostat blower to “auto” position. Indoor blower should stop. NOTE: Many models have a 1-minute blower time delay on “off” command; wait for this to time-out.

4. Set system switch to “heat” or “cool”. Adjust thermostat to call for heat or cool. The indoor blower, compressor and outdoor fan should start. NOTE: If there was no power to 24 volt transformer, the compressor and outdoor fan motor will not start for 5 minutes. This is because of the compressor short cycle protection. CODES Slow Blink Fast Blink 1 Blink 2 Blink 3 Blink

FUNCTION Normal Operation Compressor Time Delay Low Pressure Switch Failure High Pressure Switch Failure Defrost Mode Active

TABLE 5 TROUBLESHOOTING Symptom Compressor will not start (heating or cooling)

Description, Check & Possible Causes

What & How to Check / Repair

1. Check for LED illumination. Is there an LED illuminated on the board (flashing)?

Yes = go to Step #2; No = go to Step #3

2. Check for error codes. Is the LED flashing a Code?

Yes = go to Step #4; No = go to Step #8

3. Check for pow er at board. Is there 24 volts AC between R and C?

Yes = go to Step #13; No = go to Step #9

4. C h eck co d es. What code is blinking?

Code "1", go to Step #6; Code "2", go to Step#7; Fast Blink, go to Step #5

5. Compressor delay active. Check for proper operation; if still needed, go back to Step #1. Wait for 5 minute delay or jump board's "speed up pins". 6. Low pressure fault.

Check wiring circuit and unit pressures.

7. High pressure fault.

Check wiring circuit and unit pressures.

8. Check for Compressor input signal. Is there 24 volts AC between Y and C?

Yes = go to Step #10; No = go to Step #11

9. No pow er to board.

The unit either does not have unit voltage, the transformer is bad or the unit wiring is incorrect.

10. Check for Compressor output signal. Is there 24 volts AC between CC & C?

Yes = go to Step #12; No = go to Step #13

11. No "Y" compressor input signal.

Check thermostat wiring, incorrect phase of unit (see section on Phase Monitor), and finally unit wiring.

12. No "CC" compressor output signal.

Check compressor contactor for proper operation and finally check compressor.

13. Faulty board.

Replace defrost board.

Fan outdoor motor Heat pump control defective does not run (cooling or heating Motor defective except during Motor capacitor defective defrost)

Check across fan relay on heat pump control. (Com-NC) Replace heat pump control.

Reversing valve does not energize (heating only)

Heat pump control defective

Check for 24V between RV-C and B-C. 1. Check control circuit wiring. 2. Replace heat pump control

Reversing valve solenoid coil defective

Check for open or shorted coil. Replace solenoid coil.

Unit will not go into defrost (heating only)

Temperature sensor or heat pump control defective

Disconnect temperature sensor from board and jumper across "SPEEDUP" terminals and "SEN JMP" terminals. This should cause the unit to go through a defrost cycle within one minute. 1. If unit goes through defrost cycle, replace temperature sensor. 2. If unit does not go through defrost cycle, replace heat pump control.

Unit will not come out of defrost (heating only)

Temperature sensor or heat pump control defective.

Jumper across "SPEEDUP" terminal. This should cause the unit to come out of defrost within one minute. 1. If unit comes out of defrost cycle, replace temperature sensor. 2. If unit does not come out of defrost cycle, replace heat pump control.

Manual 2100-519 Page 36 of 42

Check for open or shorted motor winding. Replace motor. Check capacitor rating. Check for open or shorted capacitor. Replace capacitor.

CHECKING TEMPERATURE SENSOR

4. If sensor resistance reads very low, then sensor is shorted and will not allow proper operation of the heat pump control.

1. Disconnect temperature sensor from board and from outdoor coil.

5. If sensor is out of tolerance, shorted, open, or reads very low ohms then it should be replaced.

2. Use an ohmmeter and measure the resistance of the sensor. Also use ohmmeter to check for short or open. 3. Check resistance reading to chart of resistance use sensor ambient temperature. (Tolerance of part is ± 10%.)

TABLE 6 TEMPERATURE (F) VS RESISTANCE (R) OF TEMPERATURE SENSOR F

-25.0 -24.0

196871

5.0

72910

35.0

29986

65.0

13474

95.0

6531

190099 183585

6.0 7.0

70670 68507

36.0 37.0

29157 28355

66.0 67.0

13137 12810

96.0 97.0

6383 6239

177318 171289

8.0 9.0

66418 64399

38.0 39.0

27577 26823

68.0 69.0

12492 12183

98.0 99.0

6098 5961

165487 159904 154529

10.0 11.0 12.0

62449 60565 58745

40.0 41.0 42.0

26082 25383 24696

70.0 71.0 72.0

11883 11591 11307

100.0 101.0 102.0

2827 4697 5570

149355

13.0

56985

43.0

24030

73.0

11031

103.0

5446

144374 139576 134956

14.0 15.0 16.0

55284 53640 52051

44.0 45.0 46.0

23384 22758 22150

74.0 75.0 76.0

10762 10501 10247

104.0 105.0 106.0

5326 5208 5094

130506

17.0

50514

47.0

21561

77.0

10000

107.0

4982

-4.0 -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0

126219 122089 118108 114272 110575 107010 103574 100260 97064 93981 91008 88139 85371 82699 80121 77632

18.0 19.0 20.0 21.0 22.0 23.0 24.0 25.0 26.0 27.0 28.0 29.0 30.0 31.0 32.0 33.0

49028 14590 46200 44855 43554 42295 41077 39898 38757 37652 36583 35548 34545 33574 32634 31723

48.0 49.0 50.0 51.0 52.0 53.0 54.0 55.0 56.0 57.0 58.0 59.0 60.0 61.0 62.0 63.0

20989 20435 19896 19374 18867 18375 17989 17434 16984 16547 16122 15710 15310 14921 14544 14177

78.0 79.0 80.0 81.0 82.0 83.0 84.0 85.0 86.0 87.0 88.0 89.0 90.0 91.0 92.0 93.0

9760 8526 9299 9077 8862 8653 8449 8250 8057 7869 7686 7507 7334 7165 7000 6840

108.0 109.0 110.0 111.0 112.0 113.0 114.0 115.0 116.0 117.0 118.0 119.0 120.0 121.0 122.0 123.0

4873 4767 7663 4562 4464 4367 7274 4182 4093 4006 3921 3838 3757 3678 3601 3526

4.0

75230

34.0

30840

64.0

13820

94.0

6683

124.0

3452

-23.0 -22.0 -21.0 -20.0 -19.0 -18.0 -17.0 -16.0 -15.0 -14.0 -13.0 -12.0 -11.0 -10.0 -9.0 -8.0 -7.0 -6.0 -5.0

Manual Page

2100-519 37 of 42

TROUBLESHOOTING GE ECM™ MOTORS CAUTION: Disconnect power from unit before removing or replacing connectors, or servicing motor. To avoid electric shock from the motor’s capacitors, disconnect power and wait at least 5 minutes before opening motor.

Symptom

Cause/Procedure

• Noisy blower or cabinet

• Check for loose blower housing, panels, etc. • High static creating high blower speed? - Check for air whistling through seams in ducts, cabinets or panels - Check for cabinet/duct deformation

Symptom

Cause/Procedure

Motor rocks slightly when starting

• This is normal start-up for ECM

• “Hunts” or “puffs” at high CFM (speed)

• Does removing panel or filter reduce “puffing”? - Reduce restriction - Reduce max. airflow

Motor won’t start • No movement

• Check blower turns by hand • Check power at motor • Check low voltage (24 Vac R to C) at motor • Check low voltage connections (G, Y, W, R, C) at motor • Check for unseated pins in connectors on motor harness • Test with a temporary jumper between R - G • Check motor for tight shaft • Perform motor/control replacement check • Perform Moisture Check

• Motor rocks, but won’t start

• Check for loose or compliant motor mount • Make sure blower wheel is tight on shaft • Perform motor/control replacement check

Motor oscillates up & down while being tested off of blower

• It is normal for motor to oscillate with no load on shaft

Motor starts, but runs erratically • Varies up and down or intermittent

• Check line voltage for variation or “sag” • Check low voltage connections (G, Y, W, R, C) at motor, unseated pins in motor harness connectors • Check “Bk” for erratic CFM command (in variable-speed applications) • Check out system controls, Thermostat • Perform Moisture Check

Evidence of Moisture • Motor failure or malfunction has occurred and moisture is present

• Replace motor and Perform Moisture Check

• Evidence of moisture present inside air mover

• Perform Moisture Check

Don’t

• Check out motor, controls, wiring and connections thoroughly before replacing motor • Orient connectors down so water can’t get in - Install “drip loops” • Use authorized motor and model #’s for replacement • Keep static pressure to a minimum: - Recommend high efficiency, low static filters - Recommend keeping filters clean. - Design ductwork for min. static, max. comfort - Look for and recommend ductwork improvement, where necessary

• Automatically assume the motor is bad.

• Locate connectors above 7 and 4 o’clock positions • Replace one motor or control model # with another (unless an authorized replacement) • Use high pressure drop filters some have ½" H20 drop! • Use restricted returns

• Size the equipment wisely • “Hunts” or “puffs” at high CFM (speed)

• Does removing panel or filter reduce “puffing”? - Reduce restriction - Reduce max airflow

• Stays at low CFM despite system call for cool or heat CFM

• Check low voltage (Thermostat) wires and connections • Verify fan is not in delay mode; wait until delay complete • “R” missing/not connected at motor • Perform motor/control replacement check

• Stays at high CFM

• “R” missing/not connected at motor • Is fan in delay mode? - wait until delay time complete • Perform motor/control replacement check

• Oversize system, then compensate with low airflow • Check orientation before • Plug in power connector backwards inserting motor connectors • Force plugs

Moisture Check

• Blower won’t shut off

• Current leakage from controls into G, Y or W? Check for Triac switched thermostat or solidstate relay

Excessive noise

• Determine if it’s air noise, cabinet, duct or motor noise; interview customer, if necessary • High static creating high blower speed? - Is airflow set properly? - Does removing filter cause blower to slow down? Check filter - Use low-pressure drop filter - Check/correct duct restrictions

• Air noise

Manual 2100-519 Page 38 of 42

• Connectors are oriented “down” (or as recommended by equipment manufacturer) • Arrange harness with “drip loop” under motor • Is condensate drain plugged? • Check for low airflow (too much latent capacity) • Check for undercharged condition • Check and plug leaks in return ducts, cabinet

Comfort Check • Check proper airflow settings • Low static pressure for lowest noise • Set low continuous-fan CFM • Use humidistat and 2-speed cooling units • Use zoning controls designed for ECM that regulate CFM • Thermostat in bad location?

TROUBLESHOOTING GE ECM™ MOTORS CONT’D. Replacing ECM Control Module To replace the control module for the GE variable-speed indoor blower motor you need to take the following steps: 1. You MUST have the correct replacement module. The controls are factory programmed for specific operating modes. Even though they look alike, different modules may have completely different functionality. USING THE WRONG CONTROL MODULE VOIDS ALL PRODUCT WARRANTIES AND MAY PRODUCE UNEXPECTED RESULTS. 2. Begin by removing AC power from the furnace or air handler being serviced. DO NOT WORK ON THE MOTOR WITH AC POWER APPLIED. To avoid electric shock from the motor’s capacitors, disconnect power and wait at least 5 minutes before opening motor. 3. It is usually not necessary to remove the motor from the blower assembly. However, it is recommended that the whole blower assembly, with the motor, be removed from the furnace/air handler. (Follow the manufacturer’s procedures). Unplug the two cable connectors to the motor. There are latches on each connector. DO NOT PULL ON THE WIRES. The plugs remove easily when properly released. 4. Locate the two standard ¼" hex head bolts at the rear of the control housing (at the back end of the control opposite the shaft end). Refer to Figure 25. Remove these two bolts from the motor and control assembly while holding the motor in a way that will prevent the motor or control from falling when the bolts are removed. If an ECM2.0 control is being replaced (recognized by an aluminum casting rather that a deep-drawn black steel can housing the electronics), remove only the hex-head bolts. DO NOT REMOVE THE TORX-HEAD SCREWS. 5. The control module is now free of mechanical attachment to the motor endshield but is still connected by a plug and three wires inside the control. Carefully rotate the control to gain access to the plug at the control end of the wires. With thumb and forefinger, reach the latch holding the plug to the control and release it by squeezing the latch tab and the opposite side of the connector plug and gently pulling the plug out of the connector socket in the control. DO NOT PULL ON THE WIRES. GRIP THE PLUG ONLY. 6. The control module is now completely detached from the motor. Verify with a standard ohmmeter that the resistance from each motor lead (in the motor plug just removed) to the motor shell is >100K ohms. Refer to Figure 26. (Measure to unpainted motor end plate.) If any motor lead fails this test, do not proceed to install the control module. THE MOTOR IS DEFECTIVE AND MUST BE REPLACED. Installing the new control module will cause it to fail also. 7. Verify that the replacement control is correct for your application. Refer to the manufacturer's authorized replacement list. USING THE WRONG CONTROL WILL RESULT IN IMPROPER OR NO BLOWER OPERATION. Orient the control module so that the 3-wire motor plug can be inserted into the socket in the control. Carefully insert the plug and press it into the socket until it latches. A SLIGHT CLICK WILL BE HEARD WHEN PROPERLY INSERTED. Finish installing the replacement control per one of the three following paragraphs, 8a, 8b or 8c. 8a. IF REPLACING AN ECM 2.0 CONTROL (control in cast aluminum can with air vents on the back of the can) WITH AN ECM 2.3 CONTROL (control containing black potting for water protection in black deep-drawn steel case with no vents in the bottom of the can), locate the two through-bolts and plastic tab that are packed with the replacement control. Insert the plastic tab into the slot at the perimeter of the open end of the can so that the pin is located on the inside of the perimeter of the can. Rotate the can so that the tab inserts into the tab locater hole in the endshield of the motor. Using the two throughbolts provided with the replacement control, reattach the can to the motor.

8b. IF REPLACING AN ECM 2.3 CONTROL WITH AN ECM 2.3 CONTROL, the plastic tab and shorter through-bolts are not needed. The control can be oriented in two positions 180° apart. MAKE SURE THE ORIENTATION YOU SELECT FOR REPLACING THE CONTROL ASSURES THE CONTROL'S CABLE CONNECTORS WILL BE LOCATED DOWNWARD IN THE APPLICATION SO THAT WATER CANNOT RUN DOWN THE CABLES AND INTO THE CONTROL. Simply orient the new control to the motor's endshield, insert bolts, and tighten. DO NOT OVERTIGHTEN THE BOLTS. 8c. IF REPLACING AN ECM 2.0 CONTROL WITH AN ECM 2.0 CONTROL (It is recommended that ECM 2.3 controls be used for all replacements), the new control must be attached to the motor using through bolts identical to those removed with the original control. DO NOT OVERTIGHTEN THE BOLTS. 9. Reinstall the blower/motor assembly into the HVAC equipment. Follow the manufacturer's suggested procedures. 10. Plug the 16-pin control plug into the motor. The plug is keyed. Make sure the connector is properly seated and latched. 11. Plug the 5-pin power connector into the motor. Even though the plug is keyed, OBSERVE THE PROPER ORIENTATION. DO NOT FORCE THE CONNECTOR. It plugs in very easily when properly oriented. REVERSING THIS PLUG WILL CAUSE IMMEDIATE FAILURE OF THE CONTROL MODULE. 12. Final installation check. Make sure the motor is installed as follows: a. Unit is as far INTO the blower housing as possible. b.Belly bands are not on the control module or covering vent holes. c. Motor connectors should be oriented between the 4 o’clock and 8 o’clock positions when the blower is positioned in its final location and orientation. d.Add a drip loop to the cables so that water cannot enter the motor by draining down the cables. Refer to Figure 27. The installation is now complete. Reapply the AC power to the HVAC equipment and verify that the new motor control module is working properly. Follow the manufacturer's procedures for disposition of the old control module.

Figure 426 Figure Winding Test

Figure Figure25 3 Control Disassembly

Motor Connector (3-pin)

Only remove From Motor Hex Head Bolts Push until Latch Seats Over Ramp Circuit Board

Motor

ECM 2.0

Motor OK when R > 100k ohm

Note: Use the shorter bolts and alignment pin supplied when replacing an ECM 2.0 control.

Figure Figure27 5 Drip Loop ECM 2.3/2.5

Motor Connector (3-pin)

Back of Control

Connector Orientation Between 4 and 8 o'clock

Control Connector (16-pin) Power Connector (5-pin) Hex-head Screws

Drip Loop

THE TWO THROUGH-BOLTS PROVIDED WITH THE REPLACEMENT ECM 2.3 CONTROL ARE SHORTER THAN THE BOLTS ORIGINALLY REMOVED FROM THE ECM 2.0 CONTROL AND MUST BE USED IF SECURE ATTACHMENT OF THE CONTROL TO THE MOTOR IS TO BE ACHIEVED. DO NOT OVERTIGHTEN THE BOLTS.

Manual Page

2100-519 39 of 42

FAN BLADE SETTING DIMENSIONS

REFRIGERANT CHARGE

Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions in Table 7 be checked and blade adjusted in or out of the motor shaft accordingly.

The correct system R-410A charge is shown on the unit rating plate. Optimum unit cooling performance will occur with a refrigerant charge resulting in a Super Heat (with orifice) or with Subcooling (with TXV) as shown in Tables 8 and 8A. If correct charge is in doubt, recover the refrigerant and recharge per the charge on the unit rating plate.

FIGURE 28 FAN BLADE SETTING

TABLE 8 SUPER HEAT AT COMPRESSOR

TABLE 7 FAN BLADE DIMENSIONS MODEL

DIMENSION A (INCHES)

Q24H1 Q30H1 Q36H1 Q42H1 Q48H1 Q60H1

.750 .750 .750 .750 .750 .750

Model

Rated C FM

95° OD Temperature

82° OD Temperature

Q24H1

800

16 - 18

14 - 16

Q30H1

1000

18 - 20

16 - 18

Q42H1

1200

19 - 21

16 - 18

Q48H1

1400

23 - 25

22 - 24

Q60H1

1550

7-9

13 - 15

TABLE 8A SUBCOOLING AT LIQUID LINE Model

Rated C FM

95° OD Temperature

82° OD Temperature

Q36H1

1200

11 - 13

8 - 10

TABLE 9 INDOOR BLOWER PERFORMANCE

3 Optional C FM

4 Continuous

C FM @

C FM

Max. ESP

Rated ESP

Max. ESP

Rated CFM

.10

0.5

800

700

Q30H1

.15

0.8

1000

910

Q36H1

.15

0.8

1200

1000

1175

Q42H1

.15

0.8

1200

1000

1175

Q48H1

.15

0.8

1400

1100

1175

Q60H1

.20

0.5

1550

1250

1400

Model Q24H1

NOTE: These units are equipped with a variable speed (ECM) indoor motor that automatically adjust itself to maintain approximately the same rate of indoor airflow in both heating and cooling, dry and wet coil conditions and at both 230/208 or 460 volts. 1 Maximum ESP (inches WC) shown is with 1" thick disposable filter (reduced by .2 for 2" filter). 2 Rated CFM for ducted applications – required for maximum performance rating. To obtain full CFM on models Q36H1, Q42H1, Q48H1 and Q60H1 connect the pink jumper wire (provided) to terminal #G2 and #Y on the low voltage terminal block located in the circuit breaker box. 3 Optional CFM – the unit is shipped from the factory set to operate at the optional CFM level shown. This provides lower operating sound levels for non-ducted, free discharge applications. This reduces system capacity performance by approximately 2% at the same energy efficiency. 4 Continuous fan CFM is the total air being circulated during continuous fan mode. 5 Model Q24H1 – when operating on 2nd stage heating the indoor air will increase to 1000 CFM.

Manual 2100-519 Page 40 of 42

TABLE 10 COOLING PRESSURE (ALL TEMPERATURES IN DEGREES F)

MODEL

Q24H1

Q30H1

Q36H1

Q42H1

Q48H1

Q60H1

R E TU R N AIR TEMP. PR ESSU R E

1 AIR TEMPERATURE ENTERING OUTDOOR COIL 75

100

105

110

115

75 D B 62 WB

Low S i de High Side

118 326

119 340

121 358

122 377

125 399

128 422

132 449

135 477

138 508

80 D B 67 WB

Low S i de High Side

126 334

127 349

129 367

131 387

134 409

137 433

141 460

144 489

148 521

85 D B 72 WB

Low S i de High Side

130 346

131 361

134 380

136 401

139 423

142 448

146 476

149 506

153 539

75 D B 62 WB

Low S i de High Side

124 351

125 368

126 386

127 407

129 430

131 454

134 482

137 511

139 543

80 D B 67 WB

Low S i de High Side

133 360

134 377

135 396

136 417

138 441

140 466

143 494

146 524

149 557

85 D B 72 WB

Low S i de High Side

138 373

139 390

140 410

141 432

143 456

145 482

148 511

151 542

154 576

75 D B 62 WB

Low S i de High Side

131 351

132 369

133 389

134 410

136 434

137 459

138 486

140 514

142 543

80 D B 67 WB

Low S i de High Side

140 360

141 378

142 399

143 421

145 445

147 471

148 498

150 527

152 557

85 D B 72 WB

Low S i de High Side

145 373

146 391

147 413

148 436

150 461

152 487

153 515

155 545

157 576

75 D B 62 WB

Low S i de High Side

126 371

128 388

130 408

132 430

133 453

134 479

135 507

136 536

136 568

80 D B 67 WB

Low S i de High Side

135 380

137 398

139 418

141 441

142 465

143 491

144 520

145 550

145 583

85 D B 72 WB

Low S i de High Side

140 393

142 412

144 433

146 456

147 481

148 508

149 538

150 569

150 603

75 D B 62 WB

Low S i de High Side

123 373

125 392

128 412

130 435

133 459

136 486

139 514

143 543

147 575

80 D B 67 WB

Low S i de High Side

132 383

134 402

137 423

139 446

142 471

145 498

149 527

153 557

157 590

85 D B 72 WB

Low S i de High Side

137 396

139 416

142 438

144 462

147 487

150 515

154 545

158 576

162 611

75 D B 62 WB

Low S i de High Side

123 378

123 395

124 413

124 434

126 455

127 479

129 504

131 530

133 559

80 D B 67 WB

Low S i de High Side

132 388

132 405

133 424

133 445

135 467

136 491

138 517

140 544

142 573

85 D B 72 WB

Low S i de High Side

137 402

137 419

138 439

138 461

140 483

141 508

143 535

145 563

147 593

Low side pressure ± 2 psig High side pressure ± 5 psig Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge being in the system, the charge should be removed, system evacuated and recharged to serial plate instructions.

75°F outdoor temperature condenser fan motor is running on low speed.

Manual Page

2100-519 41 of 42

TABLE 11 HEATING PRESSURE (ALL TEMPERATURES IN DEGREES F)

MODEL

R E TU R N AIR TEMP. PR ESSU R E

AIR TEMPERATURE ENTERING OUTDOOR COIL 0

Q24H1

Low S i de High Side

35 284

42 290

49 297

57 304

64 313

72 322

79 86 331 342

94 353

101 109 365 378

117 392

124 406

Q30H1

Low S i de High Side

44 295

47 299

52 305

56 312

62 320

68 330

75 82 341 353

90 367

99 382

108 398

118 415

129 434

Q36H1

Low S i de High Side

28 38 271 278

48 286

57 294

65 302

72 310

79 319

85 327

91 96 336 346

100 355

104 365

107 374

Q42H1

Low S i de High Side

30 272

38 283

46 294

54 305

61 68 317 328

76 339

83 350

90 362

96 373

103 385

109 396

115 408

Q48H1

Low S i de High Side

27 272

36 281

46 54 291 300

63 310

71 78 320 330

85 339

91 97 349 359

103 369

108 380

113 390

Q60H1

Low S i de High Side

7 252

19 266

31 42 280 293

52 306

61 69 318 330

76 83 341 352

94 98 371 380

101 389

Refer to notes following Table 10

Manual 2100-519 Page 42 of 42

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