Lennox LM018CI-100P432-1 Owner's Manual page 33

Installation of outdoor unit
Step four: connect indoor and outdoor pipes
1. Remove the screw on the right han-
dle of outdoor unit and then remove
the handle.
2. Remove the screw cap of valve and
aim the pipe joint at the bellmouth of
pipe.
liquid
valve
1. Remove the wire clip; connect the power connection wire and signal control
wire (only for cooling and heating unit) to the wiring terminal according to the
Note: the wiring board is for reference only, please refer to the actual one.
screw
handle
liquid pipe
gas pipe
gas valve
18K Cool only type:
N(1) 2
blue black yellow-
(brown)
green
Indoor unit connection
3. Pretightening the union nut with
hand.
pipe joint
4. Tighten the union nut with torque
wrench by referring to the sheet
below.
Hex nut diameter Tightening torque
Φ 6
Φ 9.52
Φ 12
Φ 16
Φ 19
24K Cool only type:
N(1) 2 3
blue black brown yellow-
green
outdoor unit connection
30
union nut
(N . m)
15~20
30~40
45~55
60~65
70~75
18K Heat pump type:
N(1) 2 4 5
blue black violet orange
yellow-
green
Indoor unit connection