Diagram Of The Operating Principle; Operating Principle Of The Unit - Gree Versati III Series Owner's Manual

Air-to-water Heat Pump Split Versati

1. Diagram of the Operating Principle

Outdoor Unit
Ambient Temp. Sensor
Fan
Fin-tube
heat exchanger
C
4-way valve
High pressure
sensor D
High pressure S
switch
E
Discharge
temp. sensor
Compressor
Suction temp.
sensor
High pressure
High pressure
switch(cooling) switch(cooling)
Gas-liquid
separator
Notes
(a) Water mixing accessories are optional parts. When they are required, please contact the manufacturer.
(b) The 3-way valve to be installed on site should be controlled by the user.

2. Operating Principle of the Unit

DC Inverter Air to Water Heat Pump is composed of outdoor unit, indoor unit and internal-fan coil water tank.
Operation functions:
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(2) Heating
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(5) +HDWLQJ  ZDWHU KHDWLQJ
(6) (PHUJHQF\ PRGH
(7) 4XLFN ZDWHU KHDWLQJ
(8) +ROLGD\ PRGH
(9) )RUFHG 2SHUDWLRQ 0RGH
(10) 6LOHQW PRGH
(11) 'LVLQIHFWLRQ PRGH
(12) :HDWKHUGHSHQGHQW 2SHUDWLRQ
(13) Floor debugging
(14) Air removal of the water system
(15) Other thermal
Cooling: in cooling mode, the refrigerant is condensed in the outdoor unit and evaporated in the indoor unit. Via
the heat exchange with water in the indoor unit, the temperature of water decreases and it releases heat while the
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user's requirement. Through the control of valve, the low-temperature water in the system is connected with indoor
fan coil and underground pipe, and exchanges heat with the indoor air so that the indoor temperature decreases to
the required range.
Heating: in heating mode, the refrigerant evaporates in the outdoor unit and is condensed in the indoor unit.
Via the heat exchange with water in the indoor unit, the water absorbs heat and its temperature increases while the
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user's requirement. Through the control of valve, the high-temperature water in the system is connected with indoor
fan coil and underground pipe, and exchanges heat with the indoor air so that the indoor temperature increases to
Defrost temp.
sensor
A B
EXV 1
EXV 2
T-economizer in
T-water out
T-liquid pipe
PE
T-economizer out
T-water in
T-gas pipe PE
8
Indoor Unit
Other thermal
Safety
vavle
Optional
T-optional 3-way
E-heater
water sensor valve
Heating
DHW
Flow Expansion
Water
switch vessel
pump
SPLIT TYPE
Field Supply
3-Way
2-Way
Valve
Valve
Mixing
Floor
Valve
Temp.
Water Pump
Tank Temp. sensor
Water Tank EH
Water Tank