Haier 1U36HS1ERA - Page 15

Installation Procedure
13
Piping Connection
2. Piping size
3. Limitations for one way piping length and vertical height difference
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.
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.
4. Piping connection method
Forced fastening without centering may damage the threads and cause a gas leakage.
Model
One way piping length
Vertical height difference
(between indoor and outdoor)
Install the removed flare nuts to the pipes
to be connected, then flare the pipes.
Gas pipe
15.88x1.0mm
Liquid pipe
Gas pipe
9.52x0.8mm
19.05x1.0mm
Liquid pipe
9.52x0.8mm
90+0.5
1U48LS1ERA 1U48LS1ERB
1U48LS1EAB 1U48IS1EAB
1U60IS1ERA 1U60IS1ERB
1U60IS1EAB AU60NAIESA
1U28HS1ERA 1U36HS1ERA
Pipe diameter Fastening torque (N.m)
Liquid pipe 6.35mm
Gas pipe 15.88mm
Liquid pipe 9.52mm
Gas pipe 19.05mm
14.2-17.2
61.8-75.4
32.7-39.9
97.2-118.6
Gas pipe 12.7mm
49.5-60.3
1. Piping diagram
Outdoor
unit
Gas pipe
Liquid
pipe
Flare connection
Indoor
unit
3-way stop valve
3-way stop valve
less than 30 m less than 20 m
less than 50 m less than 30 m
1U28HS1ERA 1U36HS1ERA
1U48LS1ERA 1U48LS1ERB 1U48LS1EAB
1U48IS1EAB 1U60IS1ERA 1U60IS1ERB
1U60IS1EAB AU60NAIESA
1U28HS1ERA 1U36HS1ERA 1U48LS1ERA 1U48LS1ERB 1U48LS1EAB
1U48IS1EAB 1U60IS1ERA 1U60IS1ERB 1U60IS1EAB AU60NAIESA
Spanner
Spanner
Nut
Joint