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Refrigerant Pipe Connection
Connection of the Refrigerant Pipe
When connecting the pipe to the unit, use both a spanner and a
torque wrench.
When connecting, smear freeze motor oil on both the inside and
outside of the flare nut, screw it by hand and then tighten with a
spanner.
Refer to form 1 to check if the wrench had been tightened (too
tight would mangle the nut and lead to leakage).
Examine the connection pipe to see if it had a gas leak, then take
the treatment of heat insulation. Only use a median sponge to
entwine the wiring interface of the gas pipe and heat preservation
sheath of the gas collection tube.
Drainage Hose
1 Install the drain hose.
S
The diameter of the drain hose should be equal or larger
than the connection pipe's. (The diameter of the
polythene pipe: Outer diameter 1 in. (25 mm) Surface
≥
thickness
0.06 in. (1.5 mm).
S
The drain hose should be short and the drooping gradient
should be less than 1/100 to prevent the formation of an
air bubble. If the drain hose does not has enough of a
drooping gradient, a drain raising pipe should be added.
S
To prevent a bend in the drain hose, ensure the distance
between the hoisting stand is 3.28 to 4.92 ft. (1 to 1.5 m)
(see Fig. 34).
3.28 to 4.92 ft (1 to 1.5 m)
Fig. 34 – Drain Hose
S
Use the drain hose and clamp attached. Insert the drain
hose into the drain vent, and then tighten the clamp.
S
Entwine the big sponge on the clamp of drain hose to
insulate heat.
S
Apply heat insulation to the indoor drain hose.
Clamp(attachment)
Clamp
Sponge (gray)
Drain hose
Fig. 35 – Drain Hose
NOTE: Drain Setup pipe
S
The install height of the drain raising pipe should less
than 11 in. (280 mm).
S
The drain raising pipe should form a right angle with the
unit, and distance to unit should not exceed 11.81 in.
(300mm).
11 4/5 in (300 mm)
Fig. 36 – Drain Pipe Setup
3.28 to 4.92 ft (1 to 1.5 m)
Sponge(attachment)
Below 1/6 in (4 mm)
3.28-4.92
11 in (280 mm)
ft (1-1.5 m)
8 2/3 in (220 mm)
Instruction
The slant gradient of the attached drain hose should be within 3 in.
(75 mm) so that the drain hole does not have to endure unnecessary
outside force.
Fig. 37 – Slant gradient
1 Install the drain hose according to the following process if
several drain hoses join together.
Fig. 38 – Slant gradient
2 Check the smoothness of the drain after the installation.
3 Check the drain state by emitting 36 3/5 in. (600 cc) water
slowly from the outlet vent or test hole.
4 Check the drain in the state of refrigerating after installing
the electric circuit.
Fig. 39 – Drain
Electrical wiring
NOTE: The power of the entire indoor unit must be connected in
the outdoor unit.
S
About the electrical wiring, see the circuit diagram
attached to the unit.
S
All electrical wiring installation must be done by
professional personnel.
S
Remove the earthing treatment.
Wiring method of connection unit and controller
Connection wiring (communication)
1 Open the electric box cover, drag the wiring
(communication) from the rubber plug A, and impact them
well individually with an impact fastener.
2 Wire according to the indoor side circuit diagram:
(1.) Fix the impact fastener after the connection.
(2.) Entwine the small sponge on the electric wire
(entwine to prevent condensation).
(3.) Impact tightly with an impact fastener after
connecting. Then put on the electric box.
(4.) Connect the 3 cord rubber wire to the counter
terminal of the 3 way terminal board.
29
4 in (100 mm)
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