Bard T60H2-A Installation Instructions Manual Download Page 20

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Manual 2100-737A

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20 of 25

CHECKING TEMPERATURE SENSOR

OUTSIDE UNIT CIRCUIT

1. Disconnect temperature sensor from board and

from outdoor coil.

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%.)

4. If sensor resistance reads very low, then sensor is

shorted and will not allow proper operation of the
heat pump control.

5. If sensor is out of tolerance, shorted, open or reads

very low ohms then it should be replaced.

Temperature (F) vs. Resistance (R) of Temperature Sensor

-25.0

196871

13.0

56985

53.0

19374

89.0

7507

-24.0

190099

14.0

55284

52.0

18867

90.0

7334

-23.0

183585

15.0

53640

53.0

18375

91.0

7165

-22.0

177318

16.0

52051

54.0

17989

92.0

7000

-21.0

171289

17.0

50514

55.0

17434

93.0

6840

-20.0

165487

18.0

49028

56.0

16984

94.0

6683

-19.0

159904

19.0

47590

57.0

16547

95.0

6531

-18.0

154529

20.0

46200

58.0

16122

96.0

6383

-17.0

149355

21.0

44855

59.0

15710

97.0

6239

-16.0

144374

22.0

43554

60.0

15310

98.0

6098

-15.0

139576

23.0

42295

61.0

14921

99.0

5961

-14.0

134956

24.0

41077

62.0

14544

100.0

5827

-13.0

130506

25.0

39898

63.0

14177

101.0

5697

-12.0

126219

26.0

38757

64.0

13820

102.0

5570

-11.0

122089

27.0

37652

65.0

13474

103.0

5446

-10.0

118108

28.0

36583

66.0

13137

104.0

5326

-9.0

114272

29.0

35548

67.0

12810

105.0

5208

-8.0

110575

30.0

34545

68.0

12492

106.0

5094

-7.0

107010

31.0

33574

69.0

12183

107.0

4982

-6.0

103574

32.0

32634

70.0

11883

108.0

4873

-5.0

100260

33.0

31723

71.0

11591

109.0

4767

-4.0

97064

34.0

30840

72.0

11307

110.0

4663

-3.0

93981

35.0

29986

73.0

11031

111.0

4562

-2.0

91008

36.0

29157

74.0

10762

112.0

4464

-1.0

88139

37.0

28355

75.0

10501

113.0

4367

0.0

85371

38.0

27577

76.0

10247

114.0

4274

1.0

82699

39.0

26823

77.0

10000

115.0

4182

2.0

80121

40.0

26092

78.0

9760

116.0

4093

3.0

77632

41.0

25383

79.0

9526

117.0

4006

4.0

75230

42.0

24696

80.0

9299

118.0

3921

5.0

72910

43.0

24030

81.0

9077

119.0

3838

6.0

70670

44.0

23384

82.0

8862

120.0

3757

7.0

68507

45.0

22758

83.0

8653

121.0

3678

8.0

66418

46.0

22150

84.0

8449

122.0

3601

9.0

64399

47.0

21561

85.0

8250

123.0

3526

10.0

62449

48.0

20989

86.0

8057

124.0

3452

11.0

60565

49.0

20435

87.0

7869

12.0

58745

50.0

19896

88.0

7686

Summary of Contents for T60H2-A

Page 1: ...unted Packaged Heat Pump Models INSTALLATION INSTRUCTIONS Bard Manufacturing Company Inc Bryan Ohio 43506 www bardhvac com Manual 2100 737A Supersedes 2100 737 Date 5 14 21 T60H2 A T60H2 B T60H2 C Page 1 of 25 ...

Page 2: ...ations 3 Wall Mount General Information 4 Heat Pump Wall Mount Model Nomenclature 4 Shipping Damage 4 General 4 Duct Work 5 Filters 5 Fresh Air Intake 5 Condensate Drain 5 Installation Instructions 6 Wall Mounting Information 6 Mounting the Unit 6 Placement 6 Clearances Required 6 Minimum Clearances 6 Wiring Main Power 12 Wiring Low Voltage Wiring 12 Optional Outdoor Thermostat Applications 13 Opt...

Page 3: ...Summer Air Conditioning Duct Design for Residential ACCA Manual D Winter and Summer Air Conditioning and Equipment Selection For more information contact these publishers ACCA Air Conditioning Contractors of America 1712 New Hampshire Ave N W 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 ...

Page 4: ...d installation should be based on heat loss gain 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 Association for the Installation of Air Conditioning and Ventilating Systems of Other Than Residence Type NFPA No 90A and Residence Type Warm Air Heating and Air Condi...

Page 5: ...r factory for ordering information If using a return air filter grille filters must be of sufficient size to allow a maximum velocity of 400 fpm NOTE If no return air duct is used applicable installation codes may limit this cabinet to installation only in a single story structure FILTERS A 1 throwaway filter is standard with each unit The filter slides into position making it easy to service This...

Page 6: ...lashing to wall and caulk across entire length of top See Figure 3 8 For additional mounting rigidity the return air and supply air frames or collars can be drilled and screwed or welded to the structural wall itself depending upon wall construction Be sure to observe required clearance if combustible wall PLACEMENT 1 On side by side installations maintain a minimum of 20 clearance on right side t...

Page 7: ...2 13 A Cond Air Inlet Electrical Entrances Optional Side Wall Mounting Brackets Built In Location Shipping Return Air Opening Supply Air Opening Top Rain Flashing Bottom Installation Bracket Back View M L O E R S S S S S T 44 N Q P B FIGURE 2 Unit Dimensions All dimensions are in inches Dimensional drawings are not to scale Model Width Depth Height Supply Return A B C B E F G I J K L M N O P Q R S...

Page 8: ...9 3 4 32 12 5 1 2 2 29 OPENING 1 Return Opening IT IS RECOMMENDED THAT A BEAD OF SUPPLY AIR NOTES TOP FLASHING AT TIME OF INSTALLATION RAIN FLASHING SILICONE CAULKING BE PLACED BEHIND THE SIDE MOUNTING FLANGES AND UNDER MIS 416 F TOP WALL FOUR SIDES OF SUPPLY AIR DUCT IS REQUIRED WALL STRUCTURE FROM COMBUSTABLE 1 4 CLEARANCE ON ALL MATERIALS HEATER ACCESS PANEL FOAM AIR SEAL Right Side View Wall O...

Page 9: ...rials This is required for the first 3ʹ of ducting It is important to insure that the 1 4 minimum spacing is maintained at all points Failure to do this could result in overheating the combustible material and may result in a fire causing damage injury or death SIDE SECTION VIEW OF SUPPLY AIR DUCT FOR WALL MOUNTED UNIT SHOWING 1 4 CLEARANCE TO COMBUSTIBLE SURFACES ...

Page 10: ...AIR FACTORY SUPPLIED RAIN FLASHING SUPPLY AIR MIS 548 A SIDE VIEW I A C K E 1 000 B 1 000 SUPPLY DUCT OVER FRAME INTERIOR FINISHED WALL ALL AROUND DUCT FRAMING MATERIAL EXTERIOR FINISH WALL OPENING FOR ACTUAL DIMENSIONS 2 x 4 S 2 x 6 S OR STRUCTURAL STEEL ATTACH TO TOP 1 000 CLEARANCE 1 000 CLEARANCE PLATE OF WALL C SEE UNIT DIMENSIONS FIGURE 2 OPENING RETURN DUCT 2 x 6 ATTACH TO BOTTOM OVER FRAME...

Page 11: ... WALL OPENING W GRILLE SUPPLY DUCT MAYBE LOCATED IN AN ATTIC OR BELOW CEILING RAFTERS AS SHOWN CEILING RAIN RETURN AIR SLEEVE WALL SUPPLY AIR DUCT RAFTERS RAFTERS RETURN AIR OPENING W GRILLE RAIN FALSE WALL INSTALLATION DUCTED SUPPLY GRILLE OUTSIDE SPACE FALSE WALL RETURN AIR GRILLE OUTSIDE OR BELOW CEILING RAFTERS AS SHOWN FINISHED CEILING SURFACE RAIN FLASHING RAIN FLASHING RETURN AT UNIT NO DUC...

Page 12: ...at 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 To convert for the locking capability bend the tab located in the bottom le...

Page 13: ...the correct set points NOTE The additional LAB low ambient bypass relay is required to prevent heater operation during low temperature cooling operation OPTIONAL COMPRESSOR CUTOFF THERMOSTAT See Figures 8 9 Heat pump compressor operation at outdoor temperatures below 0 F are neither desirable nor advantageous in term of efficiency An outdoor thermostat can be applied to take the mechanical heating...

Page 14: ...tat This is done to maximize efficiency by utilizing the heat pump to bring the conditioned space temperature up rather than cycling on the electric heat due a second stage call for heat from the thermostat on start up coming off a night set back condition or someone increasing the thermostat set point NOTE Some programmable thermostats do have a built in time delay for pulling in second stage hea...

Page 15: ...iple 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 pressure charts on the inner control panel cover as a guideline REMEMBER When adding R 410A refrigerant it must come out of ...

Page 16: ...MONITOR All units with three phase scroll compressors are equipped with a three 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 If phases are reversed the red fault LED will be lit and compressor operation is inhibited If a f...

Page 17: ...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 8 minutes The heat pump defrost control board has an option of 30 60 o...

Page 18: ... 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...

Page 19: ... Heat pump control defective Check for 24 V between RV C and B C 1 Check circuit control 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 t...

Page 20: ...9 16 0 144374 22 0 43554 60 0 15310 98 0 6098 15 0 139576 23 0 42295 61 0 14921 99 0 5961 14 0 134956 24 0 41077 62 0 14544 100 0 5827 13 0 130506 25 0 39898 63 0 14177 101 0 5697 12 0 126219 26 0 38757 64 0 13820 102 0 5570 11 0 122089 27 0 37652 65 0 13474 103 0 5446 10 0 118108 28 0 36583 66 0 13137 104 0 5326 9 0 114272 29 0 35548 67 0 12810 105 0 5208 8 0 110575 30 0 34545 68 0 12492 106 0 50...

Page 21: ...by testing with this refrigerant charge quantity The following pressure tables show nominal pressures for the units Since many installation specific situations can affect the pressure readings this information should only be used by certified technicians as a guide for evaluating proper system performance They shall not be used to adjust charge If charge is in doubt reclaim evacuate and recharge t...

Page 22: ...ize Minimum Circuit Ampacity Maximum Circuit Exterior Fuse or Circuit Breaker Field Power Wire Size Ground WIre Size Ckt A Ckt B Ckt C Ckt A Ckt B Ckt C Ckt A Ckt B Ckt C Ckt A Ckt B Ckt C T60H2 A00 A0Z A05 A10 A15 A20 230 208 60 1 1 1 or 2 1 or 2 1 or 2 1 or 3 43 69 95 95 113 60 80 100 100 125 8 4 3 3 2 10 8 8 8 6 43 43 43 43 26 52 52 52 52 50 50 50 50 30 60 60 60 60 8 8 8 8 10 6 6 6 6 10 10 10 1...

Page 23: ...ble filter Blower only CFM is the total air being circulated during continuous fan mode Airflow remains constant Blower only CFM reduces during continuous fan mode Requires wiring modification consult Wiring Diagram and unplug and leave disconnected the insulated male female connector connecting together the Gray Orange wires located near the 24V terminal block enclosure CFM output on Cooling or E...

Page 24: ...f it s air noise cabinet duct or motor noise interview customer if necessary Air noise 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 Symptom Cause Procedure Noisy blower or cabinet Check for loose blower housing panels etc High static creating high blower speed ...

Page 25: ...site 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 25 Measure to unpainted motor end plat...

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