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Bard H12AA-A Installation Instructions Manual

Summary of H12AA-A

  • Page 1

    Page 1 of 36 wall-mounted packaged air conditioner models: installation instructions h12aa-a h24aa-a h36aa-a h42aa-a h48aa-a h60aa-a h72aa-a h24la-a h36la-a h42la-a h48la-a h60la-a h72la-a bard manufacturing company, inc. Bryan, ohio 43506 www.Bardhvac.Com manual: 2100-647d supersedes: 2100-647c dat...

  • Page 2: Contents

    Manual 2100-647d page 2 of 36 figures figure 1 h12 unit dimensions ........................... 7 figure 2 h24-72 unit dimensions ...................... 8 figure 3a h12 mounting instructions ................... 9 figure 3b h24 mounting instructions ................. 10 figure 3c h36 mounting instruct...

  • Page 3

    Manual 2100-647d page 3 of 36 getting other information and publications these publications can help when installing the furnace. 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 code...

  • Page 4: Warning

    Manual 2100-647d page 4 of 36 wall mount general information air conditioner wall mount model nomenclature h 42 a a – a 05 y p x x x j 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 t...

  • Page 5

    Manual 2100-647d page 5 of 36 duct work all duct work, supply and return, 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 ...

  • Page 6: Warning

    Manual 2100-647d page 6 of 36 failure to provide the 1/4" clearance between the supply duct and a combustible surface for the first 3' of duct can result in fire causing damage, injury or death. ! Warning installation wall mounting information 1. Two holes for the supply and return air openings must...

  • Page 7

    Manual 2100-647d page 7 of 36 figure 1 h12aa unit dimensions mis-3599 back view front view right side view cond. Air inlet entrance low voltage electrical entrance built-in rain hood 2° pitch 1.50 48.00 21.88 14.63 condenser air outlet heater & filter access air ventilation condenser airflow is blow...

  • Page 8

    Manual 2100-647d page 8 of 36 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 h24a, l 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 31.0...

  • Page 9

    Manual 2100-647d page 9 of 36 figure 3a h12aa mounting instructions seal with bead of caulking along entire length of top. Top rain flashing supplied foam air seal wall wall structure mis-3600 flanges and under top flashing at time of installation. Supply air duct return air note: it is recommended ...

  • Page 10

    Manual 2100-647d page 10 of 36 figure 3b h24aa, h24la mounting instructions 12" 12" 12" 12" 12" 20" 20" 1" 3" 4" ty p. 8" 20 1 2 " 12" 1" 3 1 8 " 4" ty p. 5" 7 8 " 3 13 16 " 2" 2" 7 1 16 " 7 1 16 " notes: ra in fl ash ing re turn air hea ter access en ti re len gt h of t op. Top wa ll of cau lk in g...

  • Page 11

    Manual 2100-647d page 11 of 36 figure 3c h36aa, h36la mounting instructions 28" a c d c 12" 12" 12" 12" 12" 5 1 16 " b e 14" 4 11 16 " 4 11 16 " 4" ty p. 2 7 8 " 7 8 " 7 8 " 4" ty p. 7 8 " 3 1 8 " supp lied h*a un it sh ow n, h* lun it mi s-3659 supp ly air en ti re len gt h of t op. Top of cau lk i...

  • Page 12

    Manual 2100-647d page 12 of 36 figure 3d h42aa, h42la, h48aa, h48la, h60aa, h60la, h72aa, h72la mounting instructions 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...

  • Page 13: Warning

    Manual 2100-647d page 13 of 36 figure 4 electric heat clearance ! 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 spacing is maintained at all p...

  • Page 14

    Manual 2100-647d page 14 of 36 figure 5 wall mounting instructions figure 6 wall mounting instructions duct opening return air supply air wood frame wall installation opening wall before mount on unit opening before installation bottom mounting concrete block wall installation bracket. Mount on open...

  • Page 15

    Manual 2100-647d page 15 of 36 figure 7 common wall mounting installations 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 mus...

  • Page 16

    Manual 2100-647d page 16 of 36 wiring – low voltage wiring low voltage connection these units use a 24-volt ac low voltage circuit. Tables 11 and 12 on pages 29 and 30 show the low voltage connections for units operated with the mv series controller or connected directly to a cooling/heating thermos...

  • Page 17: Warning

    Manual 2100-647d page 17 of 36 failure to conform to these practices could lead to damage, injury or death. ! Warning 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 ...

  • Page 18

    Manual 2100-647d page 18 of 36 high pressure and low pressure switches all h**a/h**l wall mounted air conditioner series models are supplied with a remote reset for the high and low pressure switches. The first time the high or low pressure switches are tripped, they will reset automatically. If tri...

  • Page 19

    Manual 2100-647d page 19 of 36 adjustable delay-on-make and delay-on-break timer on initial power up and any time power is interrupted to the unit, the delay-on-make period begins, which is the time set on the potentiometer (delay-on-break time) plus 10% of the delay-on-break setting (delay-on-break...

  • Page 20

    Manual 2100-647d page 20 of 36 note: both high and low pressure switch controls are inherently automatic reset devices. The high pressure switch and low pressure switch cut out and cut in settings are fixed by specific air conditioner unit model. The lockout features, both soft and manual, are a fun...

  • Page 21: Service

    Manual 2100-647d page 21 of 36 service removal of fan shroud 1. Disconnect all power to the unit. 2. Remove screws holding both grilles, one on each side of unit, and remove grilles. 3. Remove screws holding fan shroud to condenser coil and unit base. 4. Disconnect condenser fan motor from control p...

  • Page 22

    Manual 2100-647d page 22 of 36 table 3 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, the...

  • Page 23

    Manual 2100-647d page 23 of 36 table 4a electrical specifications h***a series these “minimum circuit ampacity” values are to be used for sizing the field power conductors. Refer to the national electrical code (latest version), article 310 for power conductor sizing. Maximum size of the time delay ...

  • Page 24

    Manual 2100-647d page 24 of 36 table 4b electrical specifications h***l series model rated volts & phase no. Field power circuits single circuit dual circuit minimum circuit ampacity maximum external fuse or circuit breaker field power wire size ground wire minimum circuit ampacity maximum external ...

  • Page 25

    Manual 2100-647d page 25 of 36 model nominal rated cfm * nominal rated esp * recommended airflow range factory speed connection h12a 400 .20 360 - 530 single h24a, h24l 800 .30 700 - 950 single h36a, h36l 1100 .30 1000 - 1300 high h42a, h42l 1350 .40 1250 - 1600 low h48a, h48l 1550 .35 1450 - 1750 h...

  • Page 26

    Manual 2100-647d page 26 of 36 table 8a h12a electric heat models (kw) 240v-1 208v-1 240v-3 208v-3 amps btuh amps btuh amps btuh amps btuh 3 15.0 12760 13.0 9705 7.2 10240 6.2 7680 4 16.7 13650 14.4 10240 -- -- -- -- 5 20.8 17540 18.1 13275 12.0 17065 10.4 12799 6 -- -- -- -- 14.4 20500 12.5 15360 8...

  • Page 27

    Manual 2100-647d page 27 of 36 table 9 optional accessories right hand units h12 a a-a h24 a a-a h36 a a-a h42 a a-a h48 a a-a h60 a a-a h72 a a-a heater kits 901147-a03 x 901147-a05 x ehwa02-a05b x ehw02a-a08b x ehwa02a-a10b x ehwa24-a04b x ehwa03-a05b x ehwa03-a08b x ehwa03-a10b x ehwa03-a15b x eh...

  • Page 28

    Manual 2100-647d page 28 of 36 table 10 vent and control options part number description h12 h24 h36 h42 h48 h60 h72 cmc-14 odt x x x cmc-15 start kit (230v 1-phase) x x x cmc-23 ddc x x x cmc-24 ddc x cmc-28 lac x x x x bop-1a x bop-2 blank off plate x ewm1-e ewm1-t economizer - bldg. Equipment, en...

  • Page 29

    Manual 2100-647d page 29 of 36 terminal description mv terminal connection revision "2" reference 1 compressor on output signal from jade to mv "a" on relay board "a" 2 24vac hot from terminal 2 connected to unit transformer to mv "r" on relay board "r" 3 24vac common from unit transformer to mv "c"...

  • Page 30

    Manual 2100-647d page 30 of 36 terminal description thermostat connection revision "2" reference 1 compressor on output signal from jade not used "a" 2 24vac hot from terminal 2 connected to unit transformer to thermostat "r" on tstat "r" 3 24vac common from unit transformer to thermostat "c" on tst...

  • Page 31

    Manual 2100-647d page 31 of 36 figure 9a h12aa wiring diagram – top *d is co nn ec t po w er bef or e ! Da ng er *e lectric al sh oc k ha za rd ser vicin g. Ifo pt ion not a w ires connect used fi eld lo w vo ltage hi gh vo ltage opt ional fa ctory us e co pper co nd uc to rs on ly suit ab le fo r a...

  • Page 32

    Manual 2100-647d page 32 of 36 figure 9b h24,36*a wiring diagram – top *d is co nn ec t po w er bef or e ! Da ng er *e lectric al sh oc k ha za rd ser vicin g. Ifo pt ion not a w ires connect used fi eld lo w vo ltage hi gh vo ltage opt ional fa ctory us e co pper co nd uc to rs on ly suit ab le fo ...

  • Page 33

    Manual 2100-647d page 33 of 36 figure 9c h42,48,60*a wiring diagram – top *d is co nn ec t po w er bef or e ! Da ng er *e lectric al sh oc k ha za rd ser vicin g. Ifo pt ion not a w ires connect used fi eld lo w vo ltage hi gh vo ltage opt ional fa ctory us e co pper co nd uc to rs on ly suit ab le ...

  • Page 34

    Manual 2100-647d page 34 of 36 figure 9d h72*a wiring diagram – top *d is co nn ec t po w er bef or e ! Da ng er *e lectric al sh oc k ha za rd ser vicin g. Ifo pt ion not a w ires connect used fi eld lo w vo ltage hi gh vo ltage opt ional fa ctory st ar tk it( op t.) c r s comp ressor com no nc blo...

  • Page 35: D C

    Manual 2100-647d page 35 of 36 *d isc on ne ct p ow er bef ore ! Da ng er *e le ct ri ca l s ho ck hazard s erv ic in g. Us e c opp er c on du ct ors on ly s ui ta bl e fo r a t le ast 75 ° c. War ni ng ! St ar tki t(op t.) c r s co mp ressor m ixed air te m pera ture sens or 46 1s t st ag e cool in...

  • Page 36

    Manual 2100-647d page 36 of 36 figure 11 h***a low voltage ladder diagram for unit and mv connections low voltage terminal strip 3 2 10 11 6 20 9 16 17 18 12 13 21 4 19 1 5 7 hot common 8 14 15 filter light filter switch filter reset button r on compressor control module filter relay pin 6 on heater...