Gree GVA24AL-K3NNC7A/I Service Manual page 41

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)
Foot holes
Foot holes
Fig.20
4. Connect Indoor and Outdoor Pipes
(1) Remove the screw fixing the junction box cover of outdoor
unit and then remove the cover.(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)
Liquid pipe
Liquid
gas pipe
valve
gas valve
Fig.22
(3) Pretightening the union nut with hand.
(4) Tighten the union nut with torque wrench.
Refer to the following table for wrench moment of force:
Hex nut diameter(mm)
Φ6
Φ9.52
Φ12
Φ16
Φ19
5. Connect Outdoor Electric Wire
(1) Remove the wire clip; connect the power connection wire
and power wire to the wiring terminal according to the color; fix
them with screws.(As show in Fig.23)
24K:
N(1)
yellow-
blue
green
Indoor unit connection
48/55K
L1 L2 L3 N
yellow-
brown
black violet blue
green
L1 L2 L3 N
POWER
Note: the wiring board is for reference only,
please refer to the actual one
38
handle
Fig.21
Pipe joint
Union nut
Tightening torque(N . m)
15~20
30~40
45~55
60~65
70~75
2 3
black brown
yellow-
brown black violet blue
green
Fig.23
Indoor unit connection
(2) Fix the power connection wire and signal control wire with
wire clip (only for cooling and heating unit).
Note:
(1) After tightening the screw, pull the power cord slightly to
check if it is firm.
(2) Never cut the power connection wire to prolong or shorten
the distance.
Step six: 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)
wall
Fig.24
U-shaped curve
drain hose
Note:
1.The through-wall height of drain hose shouldn't be higher
than the outlet pipe hole of indoor unit.(As show in Fig.25)
2.Slant the drain hose slightly downwards. The drain hose
can't be curved, raised and fluctuant, etc. (As show in Fig.26)
3.The water outlet can't be placed in water in order to drain
smoothly.(As show in Fig.27)
The drain hose
can't be fluctuant
The drain
hose can't
be fluctuant
The water outlet
can't be fluctuant
Fig.26
Service Manual
the drain hose can't
raise upwards.
Fig.25
The water
outlet can't
be placed
in water
Fig.27
Installation and Maintenance