GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
3
2 NOMENCLATURE
GRS—heat pump water heater
Nominal heating capacity (Unit: kW)
Null for single compressor; S—two compressors
P— inverter; Pd—DC inverter; M—modular for fixed speed; PM—AC
inverter modular; PdM—DC inverter modular; Null for fixed speed
Null for general; Re—Low temp heat pump
Null for stainless steel; T—Porcelain enamel
Null for no electric heating function; D—with electric heating function
Capacity of water tank; Unit:
(
L
)
A—LCJW: floor standing type; outer coil pipe static heating type;
B—BCJW: wall-mounted type; outer coil pipe static heating type;
C—LCJ: floor standing type; built-in coil pipe static heating type;
D—BCJ: wall-mounted type; built-in coil pipe static heating type;
Null for rotundity; F—squareness
Null for one inner tank; 2—two inner tank
Null for R22; R407c—N; R410A—Na; R134a—Nb; R417A—Ne
A, B, C…or A1, A2…, B1, B2…
H—cycle function; Null for
no
cycle function
M—380-415V 3PH~50Hz; K—220V-240V 1PH~50Hz;
D—220V-240V 1PH~60Hz; …
3 FUNCTION
Increases pressure for the refrigerant and provides driving force for
circular flow of the refrigerant as a main driving component.
Reverses flow direction of the refrigerant when the system
switches between the normal heat up mode and defrosting mode.
Provides heat exchange channel for refrigerant and water and
stores hot water for daily use.
Electronic expansion
valve
Speeds up high-pressure and high-temperature refrigerant and
reduces pressure and adjusts the circulation amount of coolant.
Provides heat exchange channel for refrigerant and air.
Enhances heat exchange on the air side of the finned tube
exchange and provides a low-temperature heat source
continuously.
Filters impurities in refrigerant to protect components with small
diameter.