Gree MULTI18HP230V1EO Installation & Owner's Manual - Page 13
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INSTALLING THE OUTDOOR UNIT
Location
Use bolts to secure the unit to a flat, solid floor.
When mounting the unit on a wall or the roof, make
sure the support is firmly secured so that it cannot
move in the event of intense vibrations or a strong
wind.
Do not install the outdoor unit in pits or air vents
Installing the pipes
Use suitable connecting pipes and equipment for
the refrigerant R410A.
Models(m)
Max. connection pipe length
Max. connection pipe length
(Simple one indoor unit)
The refrigerant pipes must not exceed the maximum
heights 15m(18K&24K), 25m(30K&36K&42K).
Wrap all the refrigerant pipes and joints.
Tighten the connections using two wrenches wor-
king in opposite directions.
BLEEDING
Humid air left inside the refrigerant circuit can cause com-
pressor malfunction. After having connected the indoor
and outdoor units, bleed the air and humidity from the
refrigerant circuit using a vacuum pump.
(1) Unscrew and remove the caps from the 2-way and 3-
way valves.
(2) Unscrew and remove the cap from the service valve.
(3) Connect the vacuum pump hose to the service valve.
(4) Operate the vacuum pump for 10-15 minutes until an
absolute vacuum of 10 mm Hg has been reached.
(5) With the vacuum pump still in operation, close the
low-pressure knob on the vacuum pump coupling.
Stop the vacuum pump.
(6) Open the 2-way valve by 1/4 turn and then close it
after 10 seconds. Check all the joints for leaks using
liquid soap or an electronic leak device.
(7) Turn the body of the 2-way and 3-way valves. Discon-
nect the vacuum pump hose.
(8) Replace and tighten all the caps on the valves.
Diameter
1/4''
3/8''
5/8''
1/2''
3/4''
When the adaptor is required for the connection of indoor
unit and the 24K、30K、36K、42K outdoor unit, the method
of pipe connection as follows:
18K
24K
30K
36K
40
60
80
80
20
20
25
25
Twisting moment (N.m)
15-20
35-40
60-65
45-50
70-75
conversion joint
Caution: Installation Must be Performed in
Accordance with the NEC/CEC by Authorized
Personnel Only.
Install the drain fitting and the drain hose
(for model with heat pump only)
Condensation is produced and flows from the out-
door unit when the appliance is operating in the
heating mode. In order not to disturb neighbours
and to respect the environment,install a drain fitting
and a drain hose to channel the condensate water.
Install the drain fitting and rubber washer on the
outdoor unit chassis and connect a drain hose to it
42K
as shown in the figure.
100
25
INDOOR
Refrigerant fluid di
3-w
ay valve
Service
inlet
(2)Turn
(8) Secure
Valve cap
11
INSTALLER
INSTALLER
Vacuum pump
Vacuum pump
(8) Secure
UNIT
rection of fiow
2-w
ay valve
(6) Open by 1/4 turn
(7)Turn to open fully
(7)Turn to open fully
(2)Turn
Vacuum pump
V
alve cap
(2)Turn
(8) Secure
Connect to the
indoor unit