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Bard QW242D Installation Instructions Manual

Manual is about: QW SERIES WATER SOURCE PACKAGED HEAT PUMP

Summary of QW242D

  • Page 1

    Manual 2100-418f page 1 of 49 qw series water source packaged heat pump installation instructions models: qw242d qw302d qw361d qw421d qw481d qw601d © copyright 2003 manual no.: 2100-418f supersedes: 2100-418e file: vol ii tab 14 date: 06-28-07 bard manufacturing company, inc. Bryan, ohio 43506 since...

  • Page 2

    Manual 2100-418f page 2 of 49 contents closed loop (earth coupled ground loop applications) circulation system design .................................... 35 copper water coil application ............................... 35 start up procedure for closed loop system ......... 36 open loop (well system...

  • Page 3

    Manual 2100-418f page 3 of 49 figures figure 1 unit dimensions ..................................... 6 figure 2 removal of unit from skid .................... 7 figure 3 proper handling of unit after removal from skid ................................................ 8 figure 4 installation of unit w...

  • Page 4

    Manual 2100-418f page 4 of 49 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 2100-418f page 5 of 49 qw series water source general information qw model nomenclature 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 lo...

  • Page 6

    Manual 2100-418f page 6 of 49 figure 1 unit dimensions.

  • Page 7

    Manual 2100-418f page 7 of 49 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 8

    Manual 2100-418f page 8 of 49 removal of wall bracket from shipping location (units with blank off plate only) the wall brackets are attached to the back of the unit. Remove and retain the wall brackets for use when attaching the unit to the wall. In units equipped with a ventilator a wall sleeve is...

  • Page 9

    Manual 2100-418f page 9 of 49 figure 4 installation of unit through wall with wall sleeve.

  • Page 10

    Manual 2100-418f page 10 of 49 figure 6 ducted application figure 5 installation with free blow plenum ceiling floor floor.

  • Page 11

    Manual 2100-418f page 11 of 49 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 2100-418f page 12 of 49 figure 8 condensate drain figure 8a side drain (side view) figure 8b optional rear drain the side drain requires a water trap for proper drainage. See figure 8a. The drain can be routed through the floor or through the wall. If the drain is to be routed through an unco...

  • Page 13

    Manual 2100-418f page 13 of 49 the rear drain can be used with wall thickness of up to 10 inches where a water trap can be installed between the unit and the interior wall. See figure 8b. The trap cannot extend beyond the edge of the unit or it will interfere with the wall mounting bracket. The drai...

  • Page 14

    Manual 2100-418f page 14 of 49 figure 9 fresh air damper removal commercial room ventilator option before starting the removal make sure the power has been turned off. The hinged return air grille must be opened. The commercial room ventilator (crv) can be seen after the panel has been removed. The ...

  • Page 15

    Manual 2100-418f page 15 of 49 qtec energy recovery ventilator option before starting the removal make sure that the power has been turned off. The hinged return air grille panel must be opened. The energy recovery ventilator (qerv) can be seen after the panel is opened. To gain access to the mist e...

  • Page 16

    Manual 2100-418f page 16 of 49 installation instructions mounting the unit when installing a qw unit near an interior wall on the left side, a minimum of 8 inches is required; 12 inches is preferred. When installing a qw unit near an interior wall on the right side, a minimum of 12 inches is require...

  • Page 17

    Manual 2100-418f page 17 of 49 figure 12 unit mounting without ventilation wall sleeve (refer to mounting instructions on page 16) side trim (2 pieces) side trim (2 pieces) wall mounting bracket bottom trim extension bottom trim piece.

  • Page 18

    Manual 2100-418f page 18 of 49 figure 13 component location side field wire entrance remote thermostat terminal block indoor blower control box/ circuit breaker panel electrical connection panel.

  • Page 19

    Manual 2100-418f page 19 of 49 wiring – main power refer to the unit rating plate and/or table 1 for wire sizing information and maximum fuse or “hacr type” circuit breaker size. Each unit is marked with a “minimum circuit ampacity”. This means that the field wiring used must be sized to carry that ...

  • Page 20

    Manual 2100-418f page 20 of 49 the climate control option g is an electronic non- programmable thermostat and humidistat. The subbase of the thermostat is factory wired to the front panel of the unit. This option is compatible for use with the optional cs2000a1 energy control monitor and a terminal ...

  • Page 21

    Manual 2100-418f page 21 of 49 y bk 4 5 4 3 r aux w1/e c 5 g 8403-058 r l y w2 o/b 6 g factory installed jumper humidistat w1 10 y1 r y1 r l y w2 b y c e g 6 bl 3 e r bl br lvtb r a o1 t p4 7 2 4 1 o/b 12 8 9 0 11 6 5 c 4102-034 c rc 1 h200 d/yo th5220d1151 8403-060 1 figure 15 remote thermostat wir...

  • Page 22

    Manual 2100-418f page 22 of 49 figure 16 remote thermostat wiring diagram “e” thermostat option r 3 11 y1 9 2 12 r y g c 8403-060 a 0 8 4102-050 br 7 r w2 t 4 6 bk 10 1 o/b y 5 bl l p4 d/yo w1/e.

  • Page 23

    Manual 2100-418f page 23 of 49 figure 17 remote thermostat wiring diagram “g” thermostat option bl o/b 2 tb1 y 6 y 5 w1/e 4 7 11 8403-060 c 4102-054 3 p4 g 1 r d/yo 0 br 12 10 9 bk w2 8 term. "c" l 01 y y1 r y c to tb2 r.

  • Page 24

    Manual 2100-418f page 24 of 49 start up description of standard equipment low pressure switch note: this unit is supplied with two low pressure switches installed, a 15 psig and a 27 psig. The 27 psig is wired into the system. This switch is suitable for ground water (pump and dump), and water loop ...

  • Page 25

    Manual 2100-418f page 25 of 49 optional cfm this option is not available for qw242 or qw302. These units are shipped from the factory set to operate at the optional cfm level shown in table 4. This provides lower operating sound levels for non-ducted, free discharge applications. This cfm level will...

  • Page 26

    Manual 2100-418f page 26 of 49 reheat circuit – there is a small orifice inserted between the reheat coil return line and suction line that will prevent liquid from accumulating in the reheat coil when it is inactive. This drain does not affect the normal operation of the system. There is a check va...

  • Page 27

    Manual 2100-418f page 27 of 49 1 maximum esp (inches wc) shown is with 1" thick disposable filter (reduced by .2 for 2" filter). 2 rated cfm for ducted applications – required for maximum performance rating. To obtain full cfm on models qw361, qw421, qw481 and qw601 locate low voltage terminal strip...

  • Page 28

    Manual 2100-418f page 28 of 49 figure 18 indoor coil reheat coil water coil compressor 4 way valve filter/ drier 3 way valve expansion valve bulb check valve orifice drain ass'y heat pump cooling mode circuit diagram water water closed circuit distributor figure 19 mis-1788a water water heat pump de...

  • Page 29

    Manual 2100-418f page 29 of 49 table 5 dehumidification relay logic board dr a o b ot st u p ni dr a o b m or f st u pt u o gy b 2 w1 e1 ad t a rl 1 gk bo yv rw e 2 av w tl e d o m g nil o o cd ei p u c c o n u xx xxx e d o m g nil o o cd ei p u c c o xx x xxx x e d o m g nil o o cm u h e d/ w xx x ...

  • Page 30

    Manual 2100-418f page 30 of 49 29" 34" floor wall opening 35" x 29 1/2" fluid access from each side fluid access from each side sleeve opening in rear of unit 3" x 8" fluid access from floor back of unit mounting brackets (shipped with wall sleeve) mis-1602 1-18-01 ref. 23 1/2" 63 1/2" 8 1/2" 33" si...

  • Page 31

    Manual 2100-418f page 31 of 49 water lines wall bracket wall bracket top view wall location 4" fluid access from floor floor wall bracket (left bracket removed for clarity) fluid access from top opening in rear of unit 3" x 8" back of unit mis-1601 11/10/00 8 1/2" 63 1/2" 23 1/2" figure 21 fluid con...

  • Page 32

    Manual 2100-418f page 32 of 49 fluid temperature entering water coil degree f table 6 pressure table cooling l e d o m r i a n r u t e r e r u t a r e p m e t e r u s s e r p 5 4 0 5 5 5 0 6 5 6 0 7 5 5 0 8 5 8 0 9 5 9 0 0 1 5 0 1 0 1 1 d 2 4 2 w q 2 6 / 5 7 e d i s w o l e d i s h g i h 8 6 7 2 1 8...

  • Page 33

    Manual 2100-418f page 33 of 49 l e d o m r i a n r u t e r e r u t a r e p m e t e r u s s e r p 5 2 0 3 5 3 0 4 5 4 0 5 5 5 0 6 5 6 0 7 5 7 0 8 d 2 4 2 w q 8 6 e d i s w o l e d i s h g i h 0 4 5 7 1 1 4 6 7 1 3 4 7 7 1 4 4 8 7 1 5 4 9 7 1 6 4 0 8 1 7 4 1 8 1 8 4 2 8 1 9 4 4 8 1 0 5 5 8 1 1 5 6 8 1...

  • Page 34

    Manual 2100-418f page 34 of 49 table 8 optional accessories o pt ional a ccessor ies – m us t b e u sed for e ac h i ns tal lat ion w/ v en ti la ti on o p ti ons ve ntila tio n wa ll sle e v e s: q w vs42 vent ilat ion w al l s leeve f o r w al ls up t o 14 i nc hes t hi c k ve ntila tio n o utdoor...

  • Page 35

    Manual 2100-418f page 35 of 49 circulation system design equipment room piping design is based on years of experience with earth coupled heat pump systems. The design eliminates most causes of system failure. Surprisingly, the heat pump itself is rarely the cause. Most problems occur because designe...

  • Page 36

    Manual 2100-418f page 36 of 49 start up procedure for closed loop system 1. Be sure main power to the unit is off at disconnect. 2. Set thermostat system switch to off, fan switch to auto. 3. Move main power disconnect to on. Except as required for safety while servicing, do not open the unit discon...

  • Page 37

    Manual 2100-418f page 37 of 49 0 10 20 30 40 50 60 70 0 5 10 15 20 25 30 35 flow (gpm) head (feet) figure 25 performance model wgpm-2c loop pump module 0 5 10 15 20 25 30 35 0 5 10 15 20 25 30 35 flow (gpm) head (feet) figure 24 performance model wgpm-1c loop pump module.

  • Page 38

    Manual 2100-418f page 38 of 49 open loop (well system applications) water connections it is very important that an adequate supply of clean, noncorrosive water at the proper pressure be provided before the installation is made. Insufficient water, in the heating mode for example, will cause the low ...

  • Page 39

    Manual 2100-418f page 39 of 49 strainer (5) installed upstream of constant flow valve (7) to collect foreign material, which would clog the flow valve orifice. Figure 26 on preceding page shows the use of shutoff valves (9) and (11) , on the in and out water lines to permit isolation of the unit fro...

  • Page 40

    Manual 2100-418f page 40 of 49 10. Check the refrigerant system pressures against the heating refrigerant pressure table in installation manual. Once again, if they do not match, check for airflow problems and then refrigeration system problems. Note: if a charge problem is determined (high or low):...

  • Page 41

    Manual 2100-418f page 41 of 49 lake and pond installations lakes and ponds can provide a low cost source of water for heating and cooling with a ground water heat pump. Direct usage of the water without some filtration is not recommended as algae and turbid water can foul the water to freon heat exc...

  • Page 42

    Manual 2100-418f page 42 of 49 figure 28 water well system 12' to 15' well cap pitless adapter submersible pump perfora t e d plastic casing drop pipe lake or pond w a ter level gra vel fill t o pressure t ank electrical line w a ter suppl y line 15' to 20' deep.

  • Page 43

    Manual 2100-418f page 43 of 49 units are equipped with female pipe thread fittings. Consult the specification sheets for sizes. Teflon tape sealer should be used when connection to the unit to insure against leaks and possible condenser fouling. Do not overtighten the connections. Flexible hoses sho...

  • Page 44

    Manual 2100-418f page 44 of 49 service service hints 1. Maintain clean air filters at all times. Also, do not needlessly close off supply and return air registers. This reduces airflow through the system, which shortens equipment service life as well as increasing operating costs. 2. Check all power...

  • Page 45

    Manual 2100-418f page 45 of 49 troubleshooting ge ecm ™ motors 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/proced...

  • Page 46

    Manual 2100-418f page 46 of 49 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 47

    Manual 2100-418f page 47 of 49 heat gen. Power failure blown fuse or tripped breaker faulty wiring loose terminals low voltage defective contacts in contactor compressor overload potential relay run capacitor start capacitor faulty wiring loose terminals control transformer low voltage thermostat co...

  • Page 48

    Manual 2100-418f page 48 of 49 ground source heat pump performance report this performance check report should be filled out by installer and retained with unit. Date: taken by: 1. Unit: mfgr model # s/n thermostat: mfgr model # p/n 2. Person reporting 3. Company reporting 4. Installed by date insta...

  • Page 49

    Manual 2100-418f page 49 of 49 the following information is needed to check performance of unit fluid side data cooling ** heating 9. Entering fluid temperature f 10. Leaving fluid temperature f 11. Entering fluid pressure psig 12. Leaving fluid pressure psig 13. Pressure drop through coil psig 14. ...