Haier HC48A1VAR [13/45] Unit dimensions

The cooling load calculation determines the unit size there are two capacities that enable the equipment to provide comfort the first is sensible capacity how much sensible heat can the unit remove sensible heat is the heat energy measured on the dry bulb thermometer the second form of heat is called latent or hidden heat this is heat held in the humidity in the air removing this heat does not affect a thermometer however removing the heat held in the moisture in the air greatly increase comfort a properly sized unit removes both forms of heat producing a comfortable living space an oversized system cycles on and off too quickly and does not properly remove humidify producing an uncomfortable living space select the indoor and outdoor equipment combination based on the manufacturer s engineering data after the proper equipment combination has been selected satisfying both sensible and latent conditioning requirements the system must be properly installed only then can the unit provide 13

Unit dimensions 13

Commercial air conditione 14

Installation instructions 14

Outdoor unit indoor coil model 14

Refrigerant system diagram refer figure below 14

Commercial air conditione 15

Cooling 15

Figure 7 heat pump refrigerant circuit 15

Heating 15

Model heat pump 10seer units 15

Commercial air conditione 16

Equipment protection from environment 16

Outdoor unit inspection 16

This product has been inspected at the factory and released to the transportation agency without known damage inspect exterior of carton for evidence of rough handling in shipment unpack carefully if damage is found report immediately to the transportation agency 16

Installation 17

Refrigerant piping 18

Unit clearances 18

Commercial air conditione 20

The factory charge is sufficient for 25 feet of standard liquid line for longer or shorter liquid line lengths adjust the charge as follows 1 4 line 0 oz per foot 5 16 line 0 oz per foot 3 8 line 0 oz per foot 1 2 line 1 oz per foot vertical separation between indoor and outdoor units maximum allowable vertical separations between indoor and outdoor units are illustrated in fig 8 2 a and fig 8 2 b it s 70 when the indoor unit is below the outdoor unit fig 3 a and 50 when the indoor unit is above the outdoor unit fig 8 2 b to ensure good oil return to the compressor when the indoor unit is below the outdoor unit suction line oil trap should be used as illustrated in fig 8 2 a tubing connections caution use extreme caution in removing the caps from the suction and liquid line fittings as there is pressure present a fitting is on the liquid line to remove pressure caution condensing units are charged with refrigerant condensing unit liquid and suction valves are closed to contain the char 20

Undesirable heat transfer resulting in capacity loss and increased power consumption refrigerant line sizing check the following table table 8 1 for correct suction and liquid line sizes for any combination of the unit size and the maximum refrigerant line length 20

Charging the system 21

Electrical wiring 22

Commercial air conditione 24

Indoor unit installation 24

22 23 4 25 8 9 6 83 6 5 9 22 4 19 6 3 6 135 cm 56 cm 59 cm 64 cm 23cm 212cm 14 cm 57 cm 50 cm 9 5cm 25

22 23 4 25 8 9 6 83 6 5 9 22 4 19 6 3 6 151cm 56 cm 59 cm 64 cm 23cm 212cm 14 cm 57 cm 50 cm 9 5cm 25

A b c d e f g h j k 25

B for hb m25 air handler 25

Commercial air conditione 25

For hb3600vc1m25 25

For hb42 6000va1m25 hb6000vc1m25 25

Model heat pump 10seer units 25

Horizontal left hand instructions 27

Commercial air conditione 29

Downflow instructions 29

Warning the a coil contains 150 p s i g of air pressure before setting up flowrator assembly for field brazing see page 12 or read the warning label on the lower access panel refrigerant tubing refrigerant tubing should be installed as to avoid undue stress they must be supported or routed to avoid strain or vibration to avoid damage that can be caused by condensate insulate the suction tube with a closed cell insulation with the seams sealed the insulation should terminate at the tubing entrance to the air handler do not reduce the recommended tubing size condensate removal 29

Commercial air conditione 31

Operation 31

System startup 31

Table 8 4 31

Commercial air conditione 32

Maintenance instructions 32

Commercial air conditione 33

Service and troubleshooting 33

Commercial air conditione 34

Installation and service checklist 34

Commercial air conditione 35

Commercial air conditione 36

Commercial air conditione 37

Commercial air conditione 38

Commercial air conditione 39

A suction pressure holds normal condition b suction pressure rises to a point and stops some refrigerant finally evaporated in the coil and made its pressure felt on the gauge normal condition do not start the compressor to force this little refrigerant into the condenser c suction pressure rises and eventually equalizes with the high pressure abnormal condition refrigerant is leaking from the condenser coil causes leaking liquid line valve leaking discharge check valve scroll compressors only leaking compressor valves action determine the causes and correct it d suction pressure never drops to 3 5 psi abnormal condition refrigerant is leaking from the condenser coil causes leaking liquid line valve leaking discharge check valve scroll compressors only leaking compressor valves action determine the causes and correct it refrigerant noncondensibiles check this procedure checks the quality of the refrigerant by comparing the refrigerant pressure to its temperature the test tells if there 40

Commercial air conditione 40

Model heat pump 10seer units 40

Table 10 1 1 pump the system down as the explained in the previous procedure open the unit disconnect to shut down the system when the suction pressure drops to 3 5 psi positive pressure 2 front seat the large vapor line valve 3 de energize the compressor remove each wire from the compressor terminals mark and identify the wire terminals warning wrap a layer of insulation electrical tape over the wire terminals not the compressor terminals this wire end is hot with voltage during the reminder of the test 4 energize the system and run the condensing fan measure the condensing coil entering and leaving air temperature with accurate thermometers 5 run the condensing fan until the leaving air temperature equals to the entering air temperature this is now the refrigerant temperature 6 compare the refrigerant pressure shown on the high pressure gauge to its associated pressure on a temperature pressure conversion chart 7 the refrigerant pressure should equal the chart pressure for the given 40

Commercial air conditione 41

Break each vacuum with dry nitrogen to 3 psi use the largest connections and hoses possible to expedite the process j charge with clean new or reclaimed r 22 refrigerant charge in accordance with proper charging procedures k check and change as needed after 24 hours of run time to verify the unit is free of acid 7 other check points a verify the operating voltage is within the specified range b check that all wiring connections are tight and proper c verify that all fuses or circuit breakers are of the proper type d ensure the air conditioning operates properly in cooling e inspect all the other electrical components for proper operation f ensure the thermostat and subbase are correct and operate properly g ensure all ducts and air moving device are sized and operate properly h ensure the refrigerant piping is sized correctly and not pinched i ensure all the system are in correct position 42

Commercial air conditione 42

Model heat pump 10seer units 42

Troubleshooting guide 42

Warning disconnect all electrical power to the unit before servicing disconnect power to both the indoor and outdoor units note there may be more than one electrical disconnect switch failure to shut off power can cause electrical shock resulting in personal injury or death symptom possible cause remedy 42

Commercial air conditione 43

Model heat pump 10seer units 43

1 2 2 4 4 5 5 3 3 44

Bcr blower control relay bcap run capacitor blower motor cc compressor contactor cch crankcase heater optional chs crankcase heater switch optional cmpr compressor dfc defrost control board hps high pressure switch lps low pressure switch ibm indoor blower motor ods outdoor temperature sensor ofm outdoor fan motor rcap run capacitor compressor rvs reversing valve solenoid stcap start capacitor optional strly start relay optional strth start thermistor optional tran transformer 230 208 selectable 44

Bk black bl blue gy gray br brown gr green or orange pu purple rd red vi violet wh white yl yellow 44

Color codes 44

Component codes 44

Confirm defrost control board dfc dip switch settings and ct application for system selection as shown in adjacent table optional components may be field or factory installed 2 if lps and or hps not installed or removed a jumper wire must be present across connector cn8 of the defrost control board dfc for system to operate 3 for proper system operation consult indoor unit and outdoor unit installation instructions to confirm system match up and blower speed selection 4 alternate double pole contactor used on some systems 5 only one start assist method to be used at a time consult outdoor unit installation instructions for application information use only factory approved accessories 6 optional ofm components may connect capacitor common and motor common for reciprocating compressor there may have crankcase heater consult outdoor unit installation instructions for details select the running capacitor one or dual and connect if ifm or ofm only have one capacitor wire connect com wire to 44

Continuous on 24vac supplied to y terminal of defrost control flash on off system in defrost operation 1 2 1 2 1 flash pipe coil sensor open or short circuit 1 2 1 2 2 flash vent suction sensor short circuit 1 2 1 2 3 flash lps hps open circuit 1 2 1 2 4 flash ct sensor out of max range 44

Factory standard field installed 44

Factory standard field installed optional 44

Heat pump wiring diagram 44

Hz 1ph 44

Led flash codes led illuminates during unit operation only 44

Line voltage 44

Low voltage 44

Outdoor unit 44

The diagram wiring of the fan motor maybe have some difference from the real parts due to different types of fan motor the detailed information can refer to the fan motor nameplate 44

Thermostat 44

Unit indoor 44

Use copper conductors only warning cabinet must be permanently grounded and all wiring to conform to i e c n e c c e c c l c and local codes as applicable replacement wire must be the same gage and insulation type as original wire 44

Wiring diagram 44

Haier group 45

Haier industrial park no haier road 45

Sincere forever 45

Haier HC48A1VAR [13/45] Unit dimensions

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