Installation guide

16
ENGLISH
- Pipe connections can be done on the front side or on the side
according to the installation environments.
- Be sure to let 0.2 kgf/cm
2
(2.8 psi) Nitrogen flow in the pipe when
welding.
- If Nitrogen was not flown during welding, many oxidized membranes
may form inside the pipe and disturb the normal operations of valves
and condensers.
Left Side
Pipe Draw
Out
Front Pipe Draw Out
Right
Side Pipe
Draw Out
Refrigerant Pipe
Regulator
Nitrogen
Taping
Valve
Nitrogen
Nitrogen
Direction
Direction
Nitrogen
Direction
Knock Out for
Liquid pipe
Knock Out for low
pressure gas pipe
Knock Out for high
pressure gas pipe
Knock Out for
power supply cable
Removal area for pipes
bottom side connections.
Knock Out for
communication cable
CAUTION
!
• Do not give damage to the pipe/base during the Knock Out
work.
• Proceed to pipe work after removing burr after Knock Out work.
• Perform sleeve work to prevent damage to the wire when
connecting wires using Knock Outs.
For Heat Pump System Installation
Liquid pipe
Gas pipe
High Pressure
Gas pipe
Liquid pipe
Service Port
Liquid pipe
Gas pipe
Leakage
Prevention Cap
Not used
(keep closed)
* Elbow is Field supplied
Chassis UXA UXB
A
C
HP 8 10 12 14/16 18/20/22 24/26
A(mm) 9.52(3/8) 9.52(3/8) 12.7(1/2) 12.7(1/2) 15.88(5/8) 15.88(5/8)
C(mm) 19.05(3/4) 19.05(3/4) 19.05(3/4) 22.2(7/8) 22.2(7/8)
28.58
(1-1/8)
Pipe Drawing Out during Single / Series connection
Method of drawing out pipes on the front side
- Proceed with the pipe work as shown in the below figure for front
side pipe drawing out.
Remove leakage prevention cap
• Remove the leakage prevention cap attached to the outdoor unit
service valve before pipe work.
• Proceed the leakage prevention cap removal as follows:
- Verify whether all the pipes are locked.
- Extract remaining refrigerant or air inside using the service port.
- Remove the leakage prevention cap
Preparation Work
- Use Knock Outs of Base Pan of the outdoor unit for Left/Right or
Bottom pipe drawing outs.
PIPE CONNECTIONS BETWEEN
INDOOR AND OUTDOOR UNIT