62
Installation and Maintenance
Service Manual
Indoor unit connection
Indoor unit connection
LN
23N(1)
L
N
POWER
blue
blue
brown
brown(black)
black
yellow-
green
yellow-green
09K 、12K 、
GWH18AGD-K6DNA1D/O
GWH24AGD-K6DNA1C/O
GWH24AGD-K6DNA1A/O 
GWH18AGD-K6DNA1A/O
 brown  black blue
N
POWER
blue
N(1) 23
brown
LN
(black)
yellow-
green
yellow-
green
L
yellow-
green
N(1)
blue
POWER
N
Indoor unit connection
2
black
(black)
L(3)
brown
brown
L
blue
yellow-
green
(1) Take sufficient protective measures when installing the 
outdoor unit.
(2) Make sure the support can withstand at least four times the 
unit weight.
(3) The outdoor unit should be installed at least 3cm above the 
oor in order to install drain joint.(As show in Fig.18)
(4) For the unit with cooling capacity of 2300W~5000W, 6 
expansion screws are needed; for the unit with cooling capacity 
of 6000W~8000W, 8 expansion screws are needed; for the 
unit with cooling capacity of 10000W~16000W, 10 expansion 
screws are needed.
Note:
gas pipe
Liquid pipe
Liquid
valve
gas valve
Pipe joint
Chassis
Drain hose
t
8.6 Installation of Outdoor Unit
1. Fix the Support of Outdoor Unit(Select it according to 
the actual installation situation)
(1) Select installation location according to the house structure.
(2) Fix the support of outdoor unit on the selected location with 
expansion screws.
2. Install Drain Joint(Only for cooling and heating unit)
(1) Connect the outdoor drain joint into the hole on the chassis.
(2) Connect the drain hose into the drain vent.
(As show in Fig.19)
3. Fix Outdoor Unit
(1) Place the outdoor unit on the support.
(2) Fix the foot holes of outdoor unit with bolts.
(As show in Fig.20)
4. Connect Indoor and Outdoor Pipes
(1) Remove the screw on the right handle of outdoor unit and 
then remove the handle.(As show in Fig.21)
(2) Remove the screw cap of valve and aim the pipe joint at the 
bellmouth of pipe.(As show in Fig.22)
(3) Pretightening the union nut with hand.
(4) Tighten the union nut with torque wrench .
Fig.18 Fig.19
Fig.20
Fig.21
Fig.22
(1) After tightening the screw, pull the power cord slightly to 
check if it is rm.
(2) Never cut the power connection wire to prolong or shorten 
the distance.
Note:
5. Connect Outdoor Electric Wire
(1) Remove the wire clip; connect the power connection  wire to 
the wiring terminal according to the color; x it with screws.(As 
show in Fig.23)
(2) Fix the power connection wire clip.
Note: the wiring board is for reference only,please refer to the 
actual one.
Piping size Tightening torque(N m)
1/4 15~20
3/8 30~40
1/2 45~55
5/8 60~65
3/4 70~75
Refer to the following table for wrench moment of force
: 
Fig.23
At least 3cm above the floor
U-shaped curve
wall
drain hose
can't raise
upwards
6. Neaten the Pipes
(1) The pipes should be placed along the wall, bent reasonably 
and hidden possibly. Min. semidiameter of bending the pipe is 
10cm.
(2) If the outdoor unit is higher than the wall hole, you must set 
a U-shaped curve in the pipe before pipe goes into the room, 
in order to prevent rain from getting into the room.(As show in 
Fig.24)
Fig.24
Fig.25
.
handle
screw