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Bard WH422D Installation instructions manual

Manual is about: WALL MOUNTED PACKAGE HEAT PUMPS

Summary of WH422D

  • Page 1

    Wall mounted package heat pumps models: wh422d wh484d wh603d installation instructions © copyright 2003 manual : 2100-443 supersedes: file: volume iii tab 17 date: 10-23-03 bard manufacturing company bryan, ohio 43506 since 1914...Moving ahead just as planned..

  • Page 2: Contents

    Contents getting other informations and publications for more information, contact these publishers: ..... 1 wall mount general information heat pump wall mount model nomenclature .......... 2 shipping damage .................................................... 5 general ...............................

  • Page 3

    Manual 2100-443 page 1 getting other information and publications manufactured under the following u.S. Patent numbers: 5,301,744; 5,002,116; 4,924,934; 4,875,520; 4,825,936 other patents pending. These publications can help you install the air conditioner or heat pump. You can usually find these at...

  • Page 4

    Manual 2100-443 page 2 wall mount general information heat pump wall mount model nomenclature wh 48 4 d a 10 x x x x x b table 1 electric heat table s l e d o m a d 2 2 4 h w b d 2 2 4 h w b d 4 8 4 h w c d 2 2 4 h w a d 4 8 4 h w a d 3 0 6 h w b d 4 8 4 h w b d 3 0 6 h w c d 4 8 4 h w c d 3 0 6 h w...

  • Page 5

    Manual 2100-443 page 3 figure 1 unit dimensions mis-411.

  • Page 6

    Manual 2100-443 page 4 maximum size of the time delay fuse or hacr type circuit breaker for protection of field wiring conductors. Based on 75°c copper wire. All wiring must conform to nec and all local codes. Maximum kw that can operate with heat pump on. These minimum circuit ampacity" values are ...

  • Page 7: Caution

    Manual 2100-443 page 5 shipping damage upon receipt of equipment, the carton should be checked for external signs of shipping damage. If damage is found, the receiving party must contact the last carrier immediately, preferably in writing, requesting inspection by the carrier’s agent. General the eq...

  • Page 8

    Manual 2100-443 page 6 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. Condensate drain a plastic drain hose extends from the drain pan at the top of the unit down to the unit base. There are openings in the uni...

  • Page 9: Warning

    Manual 2100-443 page 7 installation instructions wall mounting information 1. Two holes, for the supply and return air openings, must be cut through the wall as shown in figure 3. 2. On wood-frame walls, the wall construction must be strong and rigid enough to carry the weight of the unit without tr...

  • Page 10: Warning

    Manual 2100-443 page 8 figure 3 mounting instructions warning • a minimum of 1/4 inch clearance must be maintained between the supply air duct and combustible materials. This is required for the first 3 feet of ducting. • it is important to insure that the 1/4 inch minimum spacing is maintained at a...

  • Page 11

    Manual 2100-443 page 9 figure 5 wall-mounting instructions figure 6 wall-mounting instructions mis-548 mis-549 see figure 3 — mounting instructions see unit dimensions, figure 1, for actual dimensions see figure 1 for duct dimensions.

  • Page 12

    Manual 2100-443 page 10 figure 7 common wall-mounting installations mis-550

  • Page 13

    Manual 2100-443 page 11 wiring — main power refer to the unit rating plate for wire sizing information and maximum fuse or “hacr" type circuit breaker size. Each outdoor unit is marked with a “minimum circuit ampacity”. This means that the field wiring used must be sized to carry that amount of curr...

  • Page 14

    Manual 2100-443 page 12 figure 8 whxxxdx – hot gas reheat during dehumidification with cs2000 energy monitor full time dehumidification important note: only the thermostat and subbase combinations as shown in table 4 will work with this equipment. The thermostat and subbase must be matched and the c...

  • Page 15

    Manual 2100-443 page 13 figure 9 whxxxdx – hot gas reheat during dehumidification with programmable thermostat full time dehumidification important note: only the thermostat and subbase combinations as shown in table 4 will work with this equipment. The thermostat and subbase must be matched, and th...

  • Page 16

    Manual 2100-443 page 14 thermostat indicator lamps the red lamp will come on if there is any problem that prevents the compressor from running when it is supposed to be. Emergency heat mode the operator of the equipment must manually place the system switch in this position. This is done when there ...

  • Page 17

    Manual 2100-443 page 15 start up important installer note for improved start-up performance, wash the indoor coil with a dishwashing detergent. Crankcase heaters wh422 units are provided with compressor crankcase heat. Wh484 and wh603 units are not provided with crankcase heat. These units utilize s...

  • Page 18

    Manual 2100-443 page 16 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 co...

  • Page 19

    Manual 2100-443 page 17 defrost cycle the defrost cycle is controlled by temperature and time on the solid state heat pump control. See figure 11. 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 ...

  • Page 20

    Manual 2100-443 page 18 troubleshooting solid state heat pump control troubleshooting procedure 1. Turn on ac power supply to indoor and outdoor units. 2. Turn thermostat blower switch to fan "on" – the indoor blower should start. (if it doesn't, troubleshoot indoor unit and correct problem). 3. Tur...

  • Page 21

    Manual 2100-443 page 19 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. U...

  • Page 22

    Manual 2100-443 page 20 fan blade setting dimensions shown in the drawing in figure 12 are the correct fan blade setting dimensions for proper air delivery across the outdoor coil. Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions below be...

  • Page 23

    Manual 2100-443 page 21 table 10 maximum esp of operation electric heat only values shown are for units equipped with standard 1 inch throwaway filter on 1 inch washable filter. Derate esp by .15 for 2 inch pleated filters. L e d o m w k d e e p s 2 2 4 h w 4 8 4 h w 3 0 6 h w d e e p s h g i h d e ...

  • Page 24

    Manual 2100-443 page 22 table 12 heating pressures – (all temperatures °f) 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 remov...

  • Page 25

    Manual 2100-443 page 23 table 14 dehumidification relay logic board d r a o b o t s t u p n i d r a o b m o r f s t u p t u o g y b 2 w 1 e 1 a d t a r l 1 g k b o y v w w e 2 a v w t l e d o m g n il o o c d e i p u c c o n u x x x x x e d o m g n il o o c d e i p u c c o x x x x x x x e d o m g n ...