Haier 1U24GS4ERA Manuel D'installation page 15

Installation Procedure
1. Piping diagram for single split
1U24GS1ERA 1U28GS2ERA(S) 1U28HS1ERA(S) 1U36HS1ERA(S) 1U48LS1ERA(S) 1U48LS1ERB(S) 1U48LS1EAB(S)
1U48IS1EAB(S) 1U48IS1ERB(S) 1U60IS1ERA(S) 1U60IS1ERB(S) 1U60IS1EAB(S) 1U60IS2EAB(S) 1U60IS2ERB(S)
Flare connection
Gas pipe
Indoor
unit
Liquid
pipe
2. Piping size for single split
1U24GS1ERA 1U28GS2ERA(S)
1U28HS1ERA(S) 1U36HS1ERA(S)
1U48LS1ERA(S) 1U48LS1ERB(S)
1U48LS1EAB(S) 1U48IS1EAB(S)
1U48IS1ERB(S) 1U60IS1ERA(S)
1U60IS1ERB(S) 1U60IS1EAB(S)
1U60IS2EAB(S) 1U60IS2ERB(S)
3. Limitations for one way piping length and vertical height difference for single split
M o d e l
1U24GS1ERA 1U28GS2ERA(S)
1U28HS1ERA(S) 1U36HS1ERA(S)
1U48LS1ERA(S) 1U48LS1ERB(S) 1U48LS1EAB(S)
1U48IS1EAB(S) 1U48IS1ERB(S) 1U60IS1ERA(S)
1U60IS1ERB(S) 1U60IS1EAB(S) 1U60IS2EAB(S)
1U60IS2ERB(S)
Precautions for refrigerant piping
Do not twist or crush piping.
Be sure that no dust is mixed in piping.
Bend piping with as wide angle as possible.
Keep insulating both gas and liquid piping.
Check flare-connected area for gas leakage.
4. Piping connection method
Apply refrigerant oil to the joint and the flange.
To bend a pipe, give the roundness as possible not to crush
the pipe.
When connecting pipe, hold the pipe centre to centre and then
screw nut on by hand, refer to Fig.
Be careful not to let foreign matters, such as sands enter
the pipe.
Forced fastening without centering may damage the threads and cause a gas leakage.
5. For the allowable pipe length and height difference for maxi split system, please see the table in the page 2 of
this manual.
3-way stop valve
Outdoor
unit
3-way stop valve
9.52x0.8mm
Liquid pipe
15.88x1.0mm
Gas pipe
9.52x0.8mm
Liquid pipe
19.05x1.0mm
Gas pipe
One way piping length
less than 30 m
less than 50 m
13
90+0.5
Install the removed flare nuts to the pipes
to be connected, then flare the pipes.
Vertical height difference
(between indoor and outdoor)
less than 20 m
less than 30 m
Spanner
Spanner
Pipe diameter Fastening torque (N.m)
Liquid pipe 6.35mm
Liquid pipe 9.52mm
Gas pipe 12.7mm
Gas pipe 15.88mm
Gas pipe 19.05mm
Piping Connection
Joint
Nut
14.2-17.2
32.7-39.9
49.5-60.3
61.8-75.4
97.2-118.6