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Manual 2100-342

I

Page

2 of 24

CONTENTS

Getting Other Informations and Publications

3

Wall Mount General Information

Heat Pump Wall Mount Model Nomenclature .......... 4
Shipping Damage .................................................... 7
General

................................................................ 7

Duct Work ................................................................ 7
Filters

................................................................ 7

Fresh Air Intake ....................................................... 8
Condensate Drain –  Evaporator ............................. 8
Condensate Drain –  Condenser ............................. 8

Installation Instructions

Wall Mounting Information ....................................... 9
Mounting the Unit .................................................... 9
Wiring – Main Power ............................................. 14
Wiring – Low Voltage Wiring ................................. 14
Optional Outdoor Thermostat Applications ............ 15
Electric Heat Hold-Off ............................................ 16

Start Up

Important Installer Note ......................................... 17
Crankcase Heaters ................................................ 17
High Pressure Switch ............................................ 17
Two Speed Outdoor Fan Motors ............................ 17
Three Phase Scroll Compressor Start Up .............. 17
Phase Monitor ....................................................... 18
Service Hints ......................................................... 18
Sequence of Operation .......................................... 18
Pressure Service Ports .......................................... 18
Defrost Cycle ................................................. 18 & 19

Troubleshooting

Solid State Heat Pump Control
Troubleshooting Procedure ................................... 20
Checking Temperature Sensor Outside
Unit Circuit ............................................................. 21
Temperature vs. Resistance of Temperature ......... 21
Fan Blade Setting Dimensions .............................. 22
Removal of Fan Shroud ......................................... 22
Refrigerant Charge ................................................ 22
Pressure Tables ..................................................... 24

Figures

Figure 1

Unit Dimensions ...................................... 5

Figure 2

Fresh Air Damper Assembly ................... 8

Figure 3

Condensate Drains ................................. 8

Figure 4

Mounting Instructions ............................ 10

Figure 4A Electric Heat Clearance ......................... 11
Figure 5

Wall Mounting Instructions .................... 12

Figure 6

Wall Mounting Instructions .................... 12

Figure 7

Common Wall Mounting Installations .... 13

Figure 8

Unit 24V Terminal Board ....................... 14

Figure 9

Compressor Cutoff and Outdoor
Thermostat Wiring ................................ 15

Figure 10 Compressor Cutoff and Outdoor

Thermostat Wiring ................................ 15

Figure 11 Electric Heat Hold-Off Wiring ................ 16
Figure 12 Electric Heat Hold-Off Wiring ................ 16
Figure 13 Start Up Procedure Decal ..................... 17
Figure 14 Defrost Control Board ........................... 19
Figure 15 Fan Blade Setting ................................. 22

Tables

Table 1

Electric Heat Table .................................. 4

Table 2

Electrical Specifications .......................... 6

Table 3

Thermostat Wire Size ........................... 15

Table 4

Wall Thermostat .................................... 16

Table 5

Troubleshooting .................................... 20

Table 6

Fan Blade Dimensions .......................... 22

Table 7

System Charge Ratings ........................ 22

Table 8

Rated CFM and Rated ESP .................. 22

Table 9

Maximum ESP of Operation
Electric Heat Only ................................. 22

Table 10 Indoor Blower Performance .................. 23
Table 11

Pressure Table – Cooling ...................... 24

Table 12 Pressure Table – Heating ...................... 24

Summary of Contents for WH381

Page 1: ...ED PACKAGE HEAT PUMPS Models WH381 WH431 WH491 INSTALLATION INSTRUCTIONS Manual 2100 342I Supersedes 2100 342H File Tab 17 Date 08 01 07 Bard Manufacturing Company Inc Bryan Ohio 43506 Since 1914 Movi...

Page 2: ...ns 22 Removal of Fan Shroud 22 Refrigerant Charge 22 Pressure Tables 24 Figures Figure 1 Unit Dimensions 5 Figure 2 Fresh Air Damper Assembly 8 Figure 3 Condensate Drains 8 Figure 4 Mounting Instructi...

Page 3: ...ter and 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...

Page 4: ...URE MODEL NUMBER CONTROL MODULES CAPACITY 38 3 Ton 43 3 Ton 49 4 ton VOLTS PHASE A 230 208 60 1 B 230 208 60 3 C 460 60 3 REVISIONS KW VENTILATION OPTIONS X Barometric Fresh Air Damper Standard B Blan...

Page 5: ...p p u S n r u t e R W D H A B C B E F G I J K L M N O P Q R S T 1 8 3 H W 1 3 4 H W 1 9 4 H W 5 7 0 2 4 2 3 4 2 2 5 7 8 4 8 8 8 9 8 8 9 2 8 8 5 1 8 8 9 2 8 8 3 4 0 1 9 1 6 6 1 3 0 0 0 3 8 6 2 3 4 9 6...

Page 6: ...S e r i W 2 d n u o r G e z i S e r i W T K C A T K C B T K C A T K C B T K C A T K C B T K C A T K C B Z 0 A 0 0 A 1 8 3 H W 5 0 A 8 0 A 0 1 A 1 8 0 2 0 3 2 1 2 r o 1 2 r o 1 2 r o 1 1 3 7 5 3 7 3 8...

Page 7: ...ach unit The filter slides into position making it easy to service This filter can be serviced from the outside by removing the service door A 1 inch washable filter and a 2 inch pleated filter are al...

Page 8: ...n open or vented type system to assure proper drainage FRESH AIR INTAKE All units are built with fresh air inlet slots punched in the service panel If the unit is equipped with a fresh air damper asse...

Page 9: ...h clearance is used for ease of installation and maintaining the required clearance to combustible material The supply air opening would then be 32 x 12 See Figures 4 and 4A for details WARNING Failur...

Page 10: ...Manual 2100 342I Page 10 of 24 FIGURE 4 MOUNTING INSTRUCTIONS...

Page 11: ...s is required for the first 3 feet of ducting It is important to insure that the 1 4 inch minimum spacing is maintained at all points Failure to do this could result in overheating the combustible mat...

Page 12: ...Manual 2100 342I Page 12 of 24 FIGURE 5 WALL MOUNTING INSTRUCTIONS FIGURE 6 WALL MOUNTING INSTRUCTIONS SEE FIGURE 4 MOUNTING INSTRUCTIONS SEE UNIT DIMENSIONS FIGURE 1 FOR ACTUAL DIMENSIONS...

Page 13: ...Manual 2100 342I Page 13 of 24 FIGURE 7 COMMON WALL MOUNTING INSTALLATIONS...

Page 14: ...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 locate in the bottom left...

Page 15: ...zation of the heating Application Data and the heat loss calculation of the building are useful in determining the correct set points NOTE The additional LAB low ambient bypass relay is required to pr...

Page 16: ...eration of the electric heat until outdoor temperatures have reached a certain design point This won t allow the electric heat to come on as second stage heating unless the outdoor temperature is belo...

Page 17: ...ing See the Phase Monitor section later in this manual Verification of proper rotation must be made any time a compressor is changed or rewired If improper rotation is corrected at this time there wil...

Page 18: ...ergizes 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...

Page 19: ...he defrost region By placing a jumper across the SEN JMP terminals a 1 4 inch QC terminal works best the defrost sensor mounted on the outdoor coil is shunted out and will activate the timing circuit...

Page 20: ...g i h e h t f I t i u c r i c d e s o l c a s i o t n o d n a f f o r e w o p e l c y C t n e n o p m o c e v i t c e f e d e c a l p e R r o s s e r p m o c e h t t u o k c o l l l i w l o r t n o c...

Page 21: ...0 6 4 0 7 4 0 8 4 0 9 4 0 0 5 5 8 9 6 5 4 8 2 5 5 0 4 6 3 5 1 5 0 2 5 4 1 5 0 5 8 2 0 9 4 0 9 5 7 4 0 0 2 6 4 5 5 8 4 4 4 5 5 3 4 5 9 2 2 4 7 7 0 1 4 8 9 8 9 3 7 5 7 8 3 2 5 6 7 3 3 8 5 6 3 8 4 5 5 3...

Page 22: ...e d o M n o i s n e m i D A 1 8 3 H W 1 3 4 H W 1 9 4 H W 0 0 1 l e d o M 1 8 3 H W 1 3 4 H W 1 9 4 H W W K h g i H d e e p S d e M d e e p S w o L d e e p S h g i H d e e p S d e M d e e p S 5 0 A 3...

Page 23: ...n I 2 O 1 8 3 H W 1 9 4 H W 1 3 4 H W d e e p S h g i H d e e p S m u i d e M d e e p S w o L d e e p S h g i H d e e p S m u i d e M y r D l i o C t e W l i o C y r D l i o C t e W l i o C y r D l i...

Page 24: ...h g i H 7 7 3 0 2 7 7 8 1 2 7 7 4 3 2 8 7 0 5 2 9 7 7 6 2 0 8 5 8 2 2 8 4 0 3 4 8 4 2 3 6 8 4 4 3 B D g e d 5 8 B W g e d 2 7 e d i S w o L e d i S h g i H 0 8 0 1 2 0 8 6 2 2 0 8 2 4 2 1 8 9 5 2 2 8...

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