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Installation Procedure
5
5. REFRIGERANT PIPING
Outdoor is precharged with refrigerant.
Be sure to see the Fig.1, when connecting and removing piping from unit.
For the size of the flare nut, please refer to Table 1.
Apply refrigerant oil at both inside and outsid of lflare nut. Tighten it band tight 3-4 turns then tighten it.
Use torque specified in Table 1. (Too much force may damage flare nut, causing gas leakage).
Check piping joints for gas leakage. Insulate piping as shown in Fig. below.
Cover joint of gas piping and insulator
Apple refrigerant oil
Torque spanner
spanner
Piping joing
Flare nut
6
6. INSTALLATION OF WATER DRAINAGE PIPE
(1) Install water drainage pipe
Pipe dia, shall be equal or larger than that of unit piping.(pipe of polyethylent; size: 25mm; O.D:32mm)
Drain pipe should be short, with a downward slope at least 1/100 to prevent air bag from happening.
If downward slope can't be made, take other measures to lift it up.
Keep a distance of 1-1.5m between suspending brackets, to make water hose straight.
Use the self-provided stiff pipe and clamp
white tape. Tighten the clip until head of the screw is less than 4mm from hose.
Wind the drain hose to the clip using seal pad 9 .
Insulate drain hose in the room.
Tape (White)
<Cautions for the drain water lifting pipe>
Installation height shall be less than 280mm.
There should be a right angle with unit, 300mm from unit.
300mm below
Drain hose
(accessory)
drain water lifting pipe
Clamp
(accessory)
(Note)
The slope of water drain hose (1) shall be within 75mm, don't apply too much force on it.
If several water hoses join together, do as per following proceedures.
Specifieations of the water hoses shall meet the requirements for the unit running.
(As for outdoor piping, please refer to installation Manual of outdoor unit.)
with seal.
7
Medium size seal pad 11 (accessory)
(Cover the piping joint
with seal pad.)
Clamp 3
Insulator (accessory)
(For liquid pipe)
Insulator (accessory)
(For gas pipe)
Gas pipe
Liquid pipe
1-1.5m
Slope over 1/100
with unit. Insert water pipe into water plug until it reaches the
1
Clamp
Self-provided stiff pipe
Suspending bracket
1~1.5m
Table 1
Tighten
Pipe
size
torque
6.35 1420~1720N . cm
(144~176kgf . cm)
3270~3990N . cm
9.52
(333~407kgf . cm)
4950~6030N . cm
12.7
8
(504~616kgf . cm)
6180~7540N . cm
15.88
(630~770kgf . cm)
7
9720~11860N . cm
19.05
(990~1210kgf . cm)
Large size seal pad
Clamp
(accessory)
Self-provided stiff pipe
(accessory)
Connect water hoses with a T joint.
18
A(mm)
Flare shape
8.3~8.7
12.0~12.4
R0.4 ~ 0.8
15.4~15.8
18.6~19.0
22.9~23.3
10
(accessory)
4mm below
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