Connecting Pipe To Indoor Unit; Connecting Pipe To Outdoor Unit - LG THERMA V Installation Manual

Connecting Pipe to Indoor Unit

Connecting pipe to the indoor unit is two steps. Read following directions carefully.
Step 1. Pre-tightening.
- Align the center of the pipes and sufficiently
tighten the flare nut by hand.
Step 2. Tightening.
- Tighten the flare nut with a wrench.
- Tightening torque is as following.
Outside diameter [mm(inch)] Torque [kgf·m]
6.35 (1/4)
9.52 (3/8)
12.7 (1/2)
15.88 (5/8)
19.05 (3/4)

Connecting Pipe to Outdoor Unit

Connecting pipe to the outdoor unit is five steps including PCB setting.
Step 1. Determine direction of pipes.
- The pipes can be connetable in three directions.
- The directions are expressed in below figure.
- When connecting in a downward direction, knock out the knock-out hole of the base pan.
- Detailed geometry may vary by model.
Backward
Sideways
Forward
Knock-out
(For R410A Split)
PIPING AND WIRING FOR OUTDOOR UNIT
1.8 ~ 2.5 Torque wrench
3.4 ~ 4.2
Indoor unit tubing
5.5 ~ 6.6
6.6 ~ 8.2
9.9 ~ 12.1
Forward
Base pan
Indoor unit tubing Flare nut
Open-end wrench (fixed)
Flare nut
Backward
Sideways
Knock-out
(For R32 Split)
73
Pipings
Connection pipe
Base pan