Gree GKH18D3FI, Service Manual

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U-Match Series DC Inverter Service Manual
12
Notes:
RLA: Rated load amperes (marked in the nameplate of the outdoor unit)
FLA: Full load current
①
The fuse is located on the main board.
②
Install the disconnect device with a contact gap of at least 3mm (1/8inch) in all poles nearby
the units (Both indoor unit and outdoor unit).The appliance must be positioned so that the
plug is accessible.
③
Take 2 pieces of power cord of 0.75mm
2
(AWG18) as the communication lines between
indoor and outdoor unit, with their longest lengths of 50m (164feet). Please select the
appropriate line length as per the actual installation conditions. The communication lines can
not be twisted together. For the unit (≤30k), it’s recommended to use 8m (26-1/4feet) long
communication line.
④
Take 2 pieces of power cord of 0.75mm
2
(AWG18) as the communication lines between the
wired controller and the indoor unit, with their longest lengths of 30m (98-2/5feet). Please
select the appropriate line length as per the actual installation conditions. The
communication lin
es can not be twisted together. It’s recommended to use 8m (26-1/4feet)
long communication line.
⑤
The wire size of the communication line should be no less than 0.75mm
2
(AWG18). It’s
recommended to take 0.75mm
2
(AWG18) power cords as the communication line.
4 PIPING DIAGRAM
Indoor Unit
Outdoor Unit
TH-OE
TH-D
Condenser
Filter
Electronic Expansion Valve
Liquid Solid Valve
with Service Port
Liquid Solid
Valve
4-Way Valve
Muffler
TH-C
Low Pressure Switch
Accumulator
High Pressure
Switch
Compressor
Gas Stop Valve
with Service Port Gas Stop
Valve
TH-IE
Evaporator
TH-E
Cooling
Heating
TH-OE: Outdoor Environment Thermal Bulb
TH-C: Outdoor Condenser Thermal Bulb
TH-D: Compressor Discharge Thermal Bulb
TH-IE: Indoor Environment Thermal Bulb
TH-E: Indoor Evaporator Thermal Bulb
Filter
Filter
Notes: It is just a schematic diagram and some parts may differ from the real objects inside the unit.