21
Piping Connection:
a. Connect indoor unit pipes with two wrenches. Pay
special attention to the torque allowed as shown
below to prevent the pipes, connectors and flare
nuts from being deformed and damaged.
b. At first fingers-tighten them, then use the wrenches.
4. Connecting the Cable
• Indoor Unit
Connect the power connecting cord to the indoor
unit by connecting the wires to the terminals on the
control board individually in accordance with the
outdoor unit connection.
NOTE: (depending on the model)
It is necessary to remove the cabinet to perform
connections with the indoor unit terminal.
• Outdoor Unit
1) Remove the access door from the unit by
loosening the screw. Connect the wires to the
terminals on the control board individually as
follows.
2) Secure the power connecting cord on the control
board with cable clamp.
3) Refit the access door in the original position and
tighten the screw.
4) Use a recognized circuit breaker for 24K model
between the power source and the unit. A
disconnecting device to adequately disconnect all
supply lines must be fitted.
Model Pipe size Torque Nut width Min. thickness
7,9,12,18K Liquid Side (1/4 inch) 1.8kg.m 17mm 0.6mm
22K Liquid Side (3/8 inch) 3.5kg.m 22mm 0.6mm
7,9K Gas Side (3/8 inch) 3.5kg.m 22mm 0.6mm
12,18K Gas Side (1/2 inch) 5.5kg.m 24mm 0.6mm
22k Gas Side (5/8 inch) 7.8kg.m 27mm 0.6mm
Indoor unit
Outdoor unit
Front panel
Terminal (inside)
Cabinet
Chassis
Access door
Te r m i n a l
(inside)
