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Bard Q24H1D Installation instructions manual

Manual is about: QTEC SERIES PACKAGED HEAT PUMP

Summary of Q24H1D

  • Page 1

    Manual 2100-521b page 1 of 48 models: q24h1d q30h1d q36h1d q42h1d q48h1d q60h1d qtec series packaged heat pump installation instructions bard manufacturing company, inc. Bryan, ohio 43506 since 1914 . . . Moving ahead, just as planned. Manual: 2100-521b supersedes: 2100-521a file: vol ii tab 14 date...

  • Page 2: Contents

    Manual 2100-521b page 2 of 48 contents figures figure 1 unit dimensions ....................................... 7 figure 2 air seal under unit .................................. 8 figure 3 removal of unit from skid ...................... 8 figure 4 unit on appliance cart ...............................

  • Page 3

    Manual 2100-521b page 3 of 48 getting other information and publications these publications can help you install the air conditioner or heat pump. You can usually find these at your local library or purchase them directly from the publisher. Be sure to consult current edition of each standard. Natio...

  • Page 5

    Manual 2100-521b page 5 of 48 electrical specifications continued on page 6 table 2a 1 maximum size of the time delay fuse or hacr type circuit breaker for protection of field wiring conductors. 2 based on 75°c copper wire. All wiring must conform to the national electrical code and all local codes....

  • Page 6

    Manual 2100-521b page 6 of 48 table 2a electrical specifications (continued from page 5) t i u c r i c e l g n i s t i u c r i c l a u d l e d o m d e t a r s t l o v e s a h p d n a d l e i f . O n r e w o p s t i u c r i c 3 m u m i n i m t i u c r i c y t i c a p m a 1 m u m i x a m e s u f l a n...

  • Page 7

    Manual 2100-521b page 7 of 48 figure 1 unit dimensions q24h1d q30h1d q36h1d q42h1d q48h1d q60h1d.

  • Page 8

    Manual 2100-521b page 8 of 48 shipping damage upon receipt of equipment, the carton should be checked for external signs of shipping damage. The skid must remain attached to the unit until the unit is ready for installation. If damage is found, the receiving party must contact the last carrier immed...

  • Page 9

    Manual 2100-521b page 9 of 48 handling unit after removal from skid figure 4 unit on appliance cart the unit will have to be turned sideways and removed from the skid to fit through a 36" doorway. If the door height allows, the unit can be slid sideways through the door. If the unit can not be slid ...

  • Page 10

    Manual 2100-521b page 10 of 48 figure 6 ducted application figure 5 installation with free blow plenum.

  • Page 11

    Manual 2100-521b page 11 of 48 duct work any heat pump is more critical of proper operating charge and an adequate duct system than a straight air conditioning unit. All duct work must be properly sized for the design airflow requirement of the equipment. Air conditioning contractors of america (acc...

  • Page 12

    Manual 2100-521b page 12 of 48 fresh air intake this unit is equipped with a fresh air damper assembly. The damper blade is locked in the closed position when the unit is shipped from the factory. To allow the damper to operate, remove the two plastic locking pins, one on each end of the blade. This...

  • Page 13

    Manual 2100-521b page 13 of 48 figure 9 optional side drain (side view) installation qt ec unit figure 10 standard rear drain water trap figure 11 rear drain (top view) wall (maximum 10" for rear drain) couplings not shown but recommended for ease of removability for service. Sleeve drain line wall ...

  • Page 14

    Manual 2100-521b page 14 of 48 m is -2469 drain bo x w al l sl eeve o verfl o w tube caul k around t u be figure 12a.

  • Page 15

    Manual 2100-521b page 15 of 48 supplied with drain box kit 3/4" plastic pipe nipple horizontal to floor) (tighten threads so tee is threads) (apply teflon tape to rear drain connection in q/tec product 1/2" slip x 1/2" slip x 3/4" npt tee supplied with drain box kit plug installed in side q/tec drai...

  • Page 16

    Manual 2100-521b page 16 of 48 remove knock-out for indoor drain hose connector mis-2471 figure 12c (if used).

  • Page 17

    Manual 2100-521b page 17 of 48 mis-2472 drain hose from indoor drain pan. Move hose from attachment in lower drain pan and slide onto drain box barb fitting, securing with supplied clamp if outdoor pan is bypassed. ( will reduce risk of algae growth in the outdoor pan but at a slight cooling perform...

  • Page 18

    Manual 2100-521b page 18 of 48 washer sleeve stud mis-2689 nut lower control panel condenser door (removed) return grille figure 13a unit mounting - method 1 bottom trim piece bottom trim extension mounting bracket side trim (2 pcs.) side trim (2 pcs.) cabinet side panel enlarged view of mounting br...

  • Page 19

    Manual 2100-521b page 19 of 48 installation instructions mounting the unit when installing a qt ec unit near an interior wall on the left side, a minimum of 8 inches is required; 12 inches is preferred. When installing a qt ec unit near an interior wall on the right side, a minimum of 18 inches is r...

  • Page 20

    Manual 2100-521b page 20 of 48 note: the voltage should be measured at the field power connection point in the unit and while the unit is operating at full load (maximum amperage operating condition). The standard climate control option x is a remote thermostat connection terminal block. See figure ...

  • Page 21

    Manual 2100-521b page 21 of 48 low voltage connections these units use a grounded 24 volt ac low voltage circuit. The “r” terminal is the hot terminal and the “c” terminal is grounded. “g” terminal or pin 6 of p4 is the fan input . “y” terminal or pin 7 of p4 is the compressor input . “b” terminal o...

  • Page 22

    Manual 2100-521b page 22 of 48 mis-1285 figure 16 table 4 wall thermostats t a t s o m r e h t s e r u t a e f t n a n i m o d e r p 6 5 0 - 3 0 4 8 ) 8 0 0 1 a 2 3 2 7 c ( r o f d c l h t i w r o s n e s e d i x o i d n o b r a c s g n i d a e r r o s n e s 8 5 0 - 3 0 4 8 ) 1 5 1 1 d 0 2 2 5 h t (...

  • Page 23

    Manual 2100-521b page 23 of 48 p rotect tstat fr eeze bar d p ar t #8408-038 11 ra t c r e1 bk twv yo a2 y b l l e1 g1 rv w a1 w2 g d r elay logic boar d r etur n air ther mostat p lug #2 pi nk re d/ wh ite brow n bl ue y ello w or ange brow n/ wh ite pu rp le/wh ite bl ack /wh ite brow n bl ue y el...

  • Page 24

    Manual 2100-521b page 24 of 48 p rotect tstat fr eeze bar d p ar t #8408-038 11 ra t c r e1 bk twv yo a2 y b l l e1 g1 rv w a1 w2 g d r elay logic b oar d r etur n air ther mostat p lug #2 pi nk re d/ wh ite brow n bl ue y ello w or ange brow n/ wh ite pu rp le /wh ite bl ac k/ wh ite brow n bl ue y...

  • Page 25

    Manual 2100-521b page 25 of 48 precond - + c n c pwr vent hvac fan door no c nc n c c n o c n c (24 hrs) - + rem - + area occup. N o c n c overide energy monitor hvac man. Cs2000a2 pwr red *note: thermostat must be configured for: heat pump, factory no economizer, full time dehumidification, brown/w...

  • Page 26

    Manual 2100-521b page 26 of 48 w2 y ello w a1 8 7 9 10 11 br ow n with " e" the rmo sta t o ptio n ra t c r e1 bk tw v yo a2 y b l l e1 g1 rv g w1 /e pr otec t t stat y1 bl ue 2 de humidif ica tio n wir ing dia gr am t her mos tat pl ug #2 pi nk r ed/whi te br ow n bl ue y ello w o range br ow n/whi...

  • Page 27

    Manual 2100-521b page 27 of 48 9 w2 g d r el ay logi c boar d bar d par t #8408- 038 10 11 r etur n ai r with " g " the rmo sta t o ptio n de humidif ica tio n wir ing dia gr am bl oc k #1 o1 y y1 c w1 /e b la ck/ w hit e r ed/whi te br ow n bl ue yel low o range br ow n/whi te pur pl e/whi te r ed/...

  • Page 28

    Manual 2100-521b page 28 of 48 d l w2 y1 r ed/yel lo w o range y ello w r ed/whi te 10 24 v a c b la ck/ w hit e with " i" the rmo sta t o ptio n ra t c r e1 bk tw v yo a2 y b l l e1 r el ay logi c boar d r etur n ai r 11 a br ow n g y ello w bl ac k de humidif ica tio n wir ing dia gr am t her mos ...

  • Page 29

    Manual 2100-521b page 29 of 48 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 p...

  • Page 30

    Manual 2100-521b page 30 of 48 start up description of standard equipment solid state electronic heat pump control provides efficient 30-minute defrost cycle. A thermistor sensor and speed up terminal for service along with a 10- minute defrost override are standard on the electronic heat pump contr...

  • Page 31

    Manual 2100-521b page 31 of 48 service hints 1. Caution user to maintain clean air filters at all times. Also, not to needlessly close off supply air registers. This may reduce airflow through the system, which shortens equipment service life as well as increasing operating costs and noise levels. 2...

  • Page 32

    Manual 2100-521b page 32 of 48 vent options barometric fresh air damper (standard) before starting, make sure the power has been turned off. The return air grille panel must be removed. The fresh air damper assembly can be seen on the back of the unit. See figure 23. 1. The fresh air damper is attac...

  • Page 33

    Manual 2100-521b page 33 of 48 figure 23 fresh air damper removal mounting screw.

  • Page 34

    Manual 2100-521b page 34 of 48 figure 24 qerv removal mounting screws front fill lower blower assembly power connector power connectors.

  • Page 35

    Manual 2100-521b page 35 of 48 sequence of operation cooling – circuit r-y makes the thermostat pull in the 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 swi...

  • Page 36

    Manual 2100-521b page 36 of 48 if the thermostat calls for heat when the unit is in the dehumidification mode, the electric heaters will energize and the evaporator airflow will return to the heating airflow. When the thermostat is satisfied, the electric heaters will turn off and the airflow will b...

  • Page 37

    Manual 2100-521b page 37 of 48 figure 26 qt ec dehumidification mode circuit diagram.

  • Page 38

    Manual 2100-521b page 38 of 48 figure 27 qt ec cooling mode circuit diagram.

  • Page 39

    Manual 2100-521b page 39 of 48 defrost cycle the defrost cycle is controlled by temperature and time on the solid state heat pump control. 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 sensed by ...

  • Page 40

    Manual 2100-521b page 40 of 48 figure 28 defrost control board 120* sw 1 sw 2 time (sec) off off on on off on off on 30 60 180 low pressure bypass timer switch (factory setting 120 seconds) accumulated run time selector (factory setting 30 min.) mis-2684 a on off.

  • Page 41

    Manual 2100-521b page 41 of 48 troubleshooting solid state heat pump control troubleshooting procedure 1. Note: a thorough understanding of the defrost cycle sequence is essential. Review that section earlier in this manual prior to troubleshooting the control. Turn on ac power supply to unit. 2. Tu...

  • Page 42

    Manual 2100-521b page 42 of 48 checking temperature sensor 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 ambie...

  • Page 43

    Manual 2100-521b page 43 of 48 caution: disconnect power from unit before removing or replacing connectors, or servicing motor. To avoid electric shock from the motor’s capacitors, disconnect power and wait at least 5 minutes before opening motor. Symptom cause/procedure motor rocks slightly • this ...

  • Page 44

    Manual 2100-521b page 44 of 48 troubleshooting ge ecm ™ motors cont’d. Replacing ecm control module to replace the control module for the ge variable-speed indoor blower motor you need to take the following steps: 1. You must have the correct replacement module. The controls are factory programmed f...

  • Page 45

    Manual 2100-521b page 45 of 48 fan blade setting dimensions any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions in table 7 be checked and blade adjusted in or out of the motor shaft accordingly. 1 maximum esp (inches wc) shown is with 1" thi...

  • Page 46

    Manual 2100-521b page 46 of 48 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 removed, system evacuated and recharged to serial plate instructions. 75°f outdoor temperature condenser...

  • Page 47

    Manual 2100-521b page 47 of 48 table 11 heating pressure (all temperatures in degrees f) l e d o m r i a n r u t e r . P m e t e r u s s e r p 0 5 0 1 5 1 0 2 5 2 0 3 5 3 0 4 5 4 0 5 5 5 0 6 5 6 d 1 h 4 2 q g e d 0 7 e d i s w o l e d i s h g i h 5 3 3 7 2 2 4 4 8 2 9 4 5 9 2 6 5 7 0 3 2 6 8 1 3 9 6...

  • Page 48

    Manual 2100-521b page 48 of 48 no tes g y b w 2 e1 a1 d rat g 1 bk y o rv w e1 a2 t w v cool in g mode unocc upi ed 1 x x x x x x x cool in g mode o c cupi ed 1 x x x x x 1s t st age heati ng o cc upi ed 2 x x x x x x x x x 1s t st age mode unocc upi ed 2 x x x x x x x 2nd stage heat ing o c cupie d...