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Bard W18HA-A Installation Instructions Manual

Summary of W18HA-A

  • Page 1

    Page 1 of 34 wall mounted package heat pump models: installation instructions w18ha-a w24ha-a w24ha-b w24ha-c w30ha-a w30ha-b w30ha-c w36ha-a w36ha-b w36ha-c bard manufacturing company, inc. Bryan, ohio 43506 www.Bardhvac.Com manual: 2100-654c supersedes: 2100-654b date: 7-26-17 w42ha-a w42ha-b w42h...

  • Page 2: Contents

    Manual 2100-654c page 2 of 34 contents figures figure 1 fresh air damper .................................. 5 figure 2 unit dimensions ................................... 7 figure 3a mounting instructions – w18h, w24h .... 8 figure 3b mounting instructions – w30h, w36h .... 9 figure 3c mounting inst...

  • Page 3

    Manual 2100-654c page 3 of 34 getting other information and publications these publications can help when installing the heat pump. They can usually be found at the local library or purchased directly from the publisher. Be sure to consult the current edition of each standard. National electrical co...

  • Page 4

    Manual 2100-654c page 4 of 34 wall mount general information heat pump wall mount model nomenclature w 42 h a – a 10 x x x x x a note: vent options x, b and m are without exhaust capability. May require separate field-supplied barometric relief in building. Shipping damage upon receipt of equipment,...

  • Page 5

    Manual 2100-654c page 5 of 34 refer to maximum esp of operation electric heat table 11 on page 32. Design the duct work according to methods given by the air conditioning contractors of america (acca). When duct runs through unheated spaces, it should be insulated with a minimum of 1" of insulation....

  • Page 6: Installation

    Manual 2100-654c page 6 of 34 clearances required for service access and adequate condenser airflow models left side right side w18h, w24h, w30h, w36h 15" 20" w42h, w48h, w60h 20" 20" minimum clearances required to combustible materials models supply air duct first 3' cabinet w18h/w24h 0" 0" w30h/w3...

  • Page 7

    Manual 2100-654c page 7 of 34 dimensions of basic unit for architectural and installation requirements (nominal) model width (w) depth (d) height (h) supply return a b c b e f g i j k l m n o p q r s t w18ha w24ha 33.300 17.125 74.563 7.88 19.88 11.88 19.88 35.00 10.88 29.75 20.56 30.75 32.06 33.25 ...

  • Page 8

    Manual 2100-654c page 8 of 34 12" 12" 12" 12" 12" 20" 20" 8" 20 1 2 " 12" 3 13 16 " 2" 2" 7 1 16 " 7 1 16 " 5" 1" 3" 4" ty p. 3 1 8 " 4" ty p. 7 8 " 9" no tes: w all st ruc ture en ti re l en gt h of to p. Top w all of ca ul ki ng al ong pa nel fo am ai r seal duct ra in fl as hi ng hea te r acc ess...

  • Page 9

    Manual 2100-654c page 9 of 34 28 " a c d c 12 " 12 " 12 " 12 " 12 " b e 14 " 4 11 16 " 4 11 16 " 4" ty p. 2 7 8 " 7 8 " 7 8 " 4" ty p. 3 1 8 " 9 1 16 " 4 7 8 " no tes: duct hea te r acc ess 1/4 "c lea ra nc e on all en ti re l en gt h of to p. Top of ca ul ki ng al ong pa nel fo am ai r seal wa ll s...

  • Page 10

    Manual 2100-654c page 10 of 34 d 16" 16" 16" 16" 16" 1 7 8 " 6 1 2 " 6 1 2 " 2 1 8 " 7 8 " 1" 3" 4" ty p. 4" ty p. 6 1 2 " 30" e 16" a c c 3 1 8 " b w all opening and hole lo ca tion view re turn air 1 req ui re d di m en sio ns to m ai nt ain 1/4" m in .C lea ra nc e fr om co m bu st ib le m at er ...

  • Page 11

    Manual 2100-654c page 11 of 34 d 16" 16" 16" 16" 16" 2 " 6 8 " 5 8 9 7 " 1" 3" ty p. 1 4" 4" ty p. 6 1 2 " 30" e 16" a c c " 7 8 3 b " 8 7 1 1 2 " 6 1 1/4 30 1/2 1/ 4" cl ea ra nc e o n a ll su pplied foa m ai r seal a su pp ly o pen ing si li co ne ca ul ki ng be p la ce d be hi nd duct fo ur si de...

  • Page 12: Warning

    Manual 2100-654c page 12 of 34 figure 4 electric heat clearance w30h, w36h, w42h, w48h, w60h warning a minimum of 1/4" clearance must be maintained between the supply air duct and combustible materials. This is required for the first 3' of ducting. It is important to insure that the 1/4" minimum spa...

  • Page 13

    Manual 2100-654c page 13 of 34 figure 5 wall mounting instructions figure 6 wall mounting instructions see figures 3a-d – mounting instructions if required if required duct opening return air supply air wood frame wall installation opening wall before mount on unit opening before installation bottom...

  • Page 14

    Manual 2100-654c page 14 of 34 figure 7 common wall mounting installations rafters ducted supply rafters rafters rafters false wall outside wall no duct supply air grille return at unit wall raised floor return air lowered grille return air wall ceiling surface space return air return air grille wal...

  • Page 15

    Manual 2100-654c page 15 of 34 wiring – main power refer to the unit rating plate for wire sizing information and maximum fuse or 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 current. ...

  • Page 16

    Manual 2100-654c page 16 of 34 part number predominate features 8403-057 (th3110d1040) 1 stage cool, 1 stage heat; electronic non-programmable; auto or manual changeover 8403-058 (th5220d1151) 2 stage cool, 2 stage heat; electronic non-programmable; hp or conventional (default: hp); auto or manual c...

  • Page 17

    Manual 2100-654c page 17 of 34 thermostat w1/e a yo/d l o/b y2 y1 r g c w2 bard #8403-060 6 10 12 11 9 4 12-pin vent plug 2 3 5 7 co2 out optional co2 controller bard part #8403-067 6 5 4 3 2 1 temp-out 24vac w3/8 7 6 5 3 2 r unit low voltage term. Strip w2 c g rt y1 y2 b/w1 l/1 d a 4 1 8 7 do not c...

  • Page 18

    Manual 2100-654c page 18 of 34 figure 9 non-programmable thermostat connections (not for use on models equipped with an economizer) co2 out optional co2 controller bard part #8403-067 6 5 4 3 2 1 temp-out 24vac w3/8 7 6 5 3 2 r unit low voltage term. Strip w2 c g rt y1 y2 b/w1 l/1 d a 4 5 do not add...

  • Page 19: Start Up

    Manual 2100-654c page 19 of 34 start up these units require r-410a refrigerant and polyol ester oil. 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 ps...

  • Page 20

    Manual 2100-654c page 20 of 34 important installer note for improved start-up performance, wash the indoor coil with dishwashing detergent. High and low pressure switch all w**h series wall-mounted heat pump models are supplied with a remote reset for the high and low pressure switch. If tripped, th...

  • Page 21

    Manual 2100-654c page 21 of 34 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 switc...

  • Page 22

    Manual 2100-654c page 22 of 34 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 pla...

  • Page 23

    Manual 2100-654c page 23 of 34 figure 10 defrost control board 120* sw 1 sw 2 time (sec) off off on on off on off on 30 60 180 mis-2668 a off low pressure bypass timer switch *(factory setting 120 seconds) accumulated defrost time timer (factory setting 60 min.) on model setting w18ha 60 w24ha 60 w3...

  • Page 24: Service

    Manual 2100-654c page 24 of 34 service solid state heat pump control troubleshooting procedure 1. Note: a thorough understanding of the defrost cycle sequence is essential. Review that section (page 21) prior to troubleshooting the control. Turn on ac power supply to unit. 2. Turn thermostat blower ...

  • Page 25

    Manual 2100-654c page 25 of 34 checking temperature sensor outside unit circuit 1. Disconnect temperature sensor from board and from outdoor coil. 2. Use an ohmmeter to measure the resistance of the sensor. Also use ohmmeter to check for short or open. 3. Check resistance reading to chart of resista...

  • Page 26

    Manual 2100-654c page 26 of 34 troubleshooting nidec selectech series ecm motors if the motor is running 1. It is normal for the motor to rock back and forth on start up. Do not replace the motor if this is the only problem identified. 2. If the system is excessively noisy, does not appear to change...

  • Page 27

    Manual 2100-654c page 27 of 34 figure 12 motor connections manual 2100-467h page 23 of 23 figure 11 troubleshooting ge x13-series ecm2.3 ™ motors cont’d. Model x13 communication diagnostics the x13 motor is communicated through 24 vac low voltage (thermostat control circuit wiring). 1. Start with un...

  • Page 28

    Manual 2100-654c page 28 of 34 figure 13 fan blade setting table 6 fan blade dimension removal of fan shroud 1. Disconnect all power to the unit. 2. Remove the screws holding both grilles, one on each side of unit, and remove grilles. 3. Remove nine screws holding fan shroud to condenser and bottom....

  • Page 29

    Manual 2100-654c page 29 of 34 table 7a – cooling pressure air temperature entering outdoor coil °f low side pressure ± 4 psig; high side pressure ± 10 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,...

  • Page 30

    Manual 2100-654c page 30 of 34 table 8 electrical specifications model rated volts & phase no. Field power circuits single circuit dual circuit minimum circuit ampacity maximum external fuse or ckt. Brkr. N field power wire size n ground wire minimum circuit ampacity maximum external fuse or ckt. Br...

  • Page 31

    Manual 2100-654c page 31 of 34 table 9 recommended airflow table 10 indoor blower performance * rated cfm and esp on high speed tap. Rated cfm and esp on low speed tap. Model rated cfm * rated esp * recommended airflow range factory speed connection w18h 600  .20 575 - 725 low w24h 800 .20 700 - 92...

  • Page 32

    Manual 2100-654c page 32 of 34 table 11 maximum esp of operation electric heat only table 12 electric heat model speed kw w42h w48h w60h high speed low speed high speed low speed high speed low speed -a00 -a04 -a05 -a10 -a15 -a20 .50 ----- .50 .50 .50 ----- .50 ----- .50 .45 .45 ----- .50 .50 .50 .5...

  • Page 33

    Manual 2100-654c page 33 of 34 w18ha-a w24ha-a w24ha-b w24ha-c w30ha-a w30ha-b w30ha-c w36ha-a w36ha-b w36ha-c w42ha-a w42ha-b w42ha-c w48ha-a w48ha-b w48ha-c w60ha-a w60ha-b w60ha-c table 13 optional accessories ehw18h-a04 x ehw18h-a08 x ehw2th-a04 x ehw2th-a08 x ehwh24-b06b x ehwh24b-c06 x ehwh30-...

  • Page 34

    Manual 2100-654c page 34 of 34 table 14 vent and control options ptcr start kit can be used with all -a single phase models. Increases starting torque 2-3x. Not used for -b or -c three phase models. Do not use if sk111 is used. Start capacitor and potential relay start kit can be used with all -a si...