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Haier HC60A1VAR — обзор коммерческих кондиционеров: схемы и устройства [11/45]
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Commercial Air Conditioner Model: heat pump, 10SEER UNITS
11
Distributor assy
Fig.4-4
REFRIGERANT CIRCUIT
There are two types of outdoor coil circuiting: single and multi-circuited.
The 10 series are all multi –circuits.
Fig.4-5
SERVICE VALVES
There are two types of service valve used on the air conditioning .They are the service port valve or
“Schrader valve” and the refrigerant line valve. The Schrader valve is like a tire valve in an automobile.
The stem or core is removable with a flexible seal at its base held closed with a spring. Schrader valves
allow a technician to connect gages to the system with a minimum loss of charge. Use a cap with an
inner seal to prevent leakage and keep dirt and moisture out..
The refrigerant control valve lets the system be isolated into two separate sections. In split system,
These valves hold the charge in the outdoor section from the time of manufacture until the unit is
connected to the indoor section by the installer.
5.ELECTRICAL CONTROL DEVICES
THERMOSTATS
Thermostats are the most obvious control in the air conditioning ,since these controls are accessible by
the consumer. Contact the local distributor for information on part numbers of various manual
changeover, auto changeover and set-back thermostats or see the thermostat and subbase selection
information found in the wiring diagram booklet.
In the cooling mode, the thermostat calls for cooling by energizing the compressor contactor and the
indoor blower control. The indoor blower can operate continuously by setting the thermostat subbase fan
switch to the “ON” position.
PROTECTION DEVICES
Protection for the unit begins with the installation of appropriate fuses or circuit breakers by the installing
contractor. Breaker or fuse size is governed by local codes and the National Electrical Code. Current
requirements for each unit are found in the unit specifications.
OVERLOADS AND LIMITS
Overloads protect against over-current or over-temperature conditions. Those located in the outdoor unit
include the automatic reset internal overload in the fan motor and the compressor automatic reset
internal overload. Such controls are not serviceable but their operation may influence service
troubleshooting .For example ,the compressor internal overload may stay open for several hours .A
technician may incorrectly diagnose an open compressor winding.
There are similar overloads in the indoor air handling portion with the electric resistance heaters. The
indoor blower motor has an internal overload. The electric elements use two types of protectors ,both
replaceable. Some electric heat section use fusible links. They are a one time over-temperature
protector and must be replaced upon opening. Limit controls are thermal discs that automatically
reset .Normally, limit open and stop a heat rise before the fusible links open.
NOTE: Never disconnect or wire around a safety device .First determine why it opened, then replace it
with a properly rated part.
HIGH PRESSURE CUT OUT SWITCH (optional)
The high pressure cut-out is a pressure activated switch. It opens an electrical circuit when the
refrigerant pressure exceeds a pre-determined limit of 440 to 460 p.s.i.g. This switch can restore
Содержание
140- Hr30a1var hr36a1var
- Hr18a1var hr24a1var
- Features
- Commercial air conditioning
- Service manual
- Hr60a1var
- Hr42a1var hr48a1var
- Service and troubleshooting 32
- Safety precaution 9
- Refrigerant diagram 3
- Physical and electrical specifications 5
- Model heat pump 10seer units
- Maintenance instructions 1
- Installation instructions 4
- Explosive diagram and spare parts list 4
- Electrical control devices 1
- Description of products fearures
- Contents
- Commercial air conditione
- Application 12
- Wiring diagrams 3
- System components and functions 9
- Nomenclature for model numbe
- H c 24 a 1 v a r
- Engineering features
- Description of products fearures
- Commercial air conditione
- Air conditioner
- Commercial air conditione
- Accessories
- Physical and electrical specifications
- Model heat pump 10seer units
- Commercial air conditione
- Model heat pump 10seer units
- Commercial air conditione
- Commercial air conditione
- Model heat pump 10seer units
- System components
- Safety precautions
- Commercial air conditione
- Cautio
- And functions
- Commercial air conditione
- Service valves
- Refrigerant circuit
- Electrical control devices
- Commercial air conditione
- Commercial air conditione
- Application
- Model heat pump 10seer units
- Designates metric conversions table 6 1
- Commercial air conditione
- 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
- Model hr18 60a1var
- Refrigerant system diagram refer figure below
- Outdoor unit indoor coil model
- Installation instructions
- Commercial air conditione
- Model heat pump 10seer units
- Heating
- Figure 7 heat pump refrigerant circuit
- Cooling
- Commercial air conditione
- 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
- Outdoor unit inspection
- Equipment protection from environment
- Commercial air conditione
- Installation
- Unit clearances
- Refrigerant piping
- 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
- 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
- Commercial air conditione
- Charging the system
- Electrical wiring
- Indoor unit installation
- Commercial air conditione
- For hb3600vc1m25
- Commercial air conditione
- B for hb m25 air handler
- A b c d e f g h j k
- 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
- 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
- Model heat pump 10seer units
- For hb42 6000va1m25 hb6000vc1m25
- Horizontal left hand instructions
- 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
- Downflow instructions
- Commercial air conditione
- Table 8 4
- System startup
- Operation
- Commercial air conditione
- Maintenance instructions
- Commercial air conditione
- Service and troubleshooting
- Commercial air conditione
- Installation and service checklist
- Commercial air conditione
- Commercial air conditione
- Commercial air conditione
- Commercial air conditione
- Commercial air conditione
- Commercial air conditione
- 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
- Model heat pump 10seer units
- Commercial air conditione
- 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
- Commercial air conditione
- 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
- Troubleshooting guide
- Model heat pump 10seer units
- Commercial air conditione
- 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
- Commercial air conditione
- Model heat pump 10seer units
- Outdoor unit
- Low voltage
- Line voltage
- Led flash codes led illuminates during unit operation only
- Hz 1ph
- Heat pump wiring diagram
- Factory standard field installed optional
- Factory standard field installed
- 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
- 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
- Component codes
- Wiring diagram
- Color codes
- 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
- Bk black bl blue gy gray br brown gr green or orange pu purple rd red vi violet wh white yl yellow
- Unit indoor
- 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
- Thermostat
- 1 2 2 4 4 5 5 3 3
- 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
- Sincere forever
- Haier industrial park no haier road
- Haier group
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