Haier AB18CS1ERA - Page 336

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5. Relling the refrigerant
Check the type of refrigerant to be used on the machine nameplate.
Precautions when adding R410A
Fill from the liquid pipe in liquid form.
It is a mixed refrigerant, so adding it in gas form may cause the refrigerant composition to change, preventing
normal operation.
1) Before lling, check whether the cylinder has a siphon attached or not.(It should have something like "liquid lling
siphon attached" displayed on it.)
2) Be sure to use the R410A tools to ensure pressure and to prevent foreign objects entering.
6. Charging with refrigerant
1) This system must use refrigerant R410A.
2) Add refrigerant 20g per meter when the total piping length
exceeds the standard value, but make sure that the total
liquid piping length should be less than the max. value.
5U45LS1ERA charge 28g/m refrigerant for extra pipe
length
Outdoor unit
Standard total
liquid piping length
Max. total liquid
piping lenght
3U19FS1ERA(N) 30m 50m
3U24GS1ERA(N) 30m 60m
4U26HS1ERA
4U30HS1ERA
40m 70m
5U34HS1ERA 40m 80m
5U45LS1ERA 40m 100m
Notes:
1) When using this product, you need not to set the address. But the L/N wires between indoor & outdoor units
must be corresponded, or there will be communication failure.
2) Quiet operation setting. Set the DIP "8" to ON position of SW5, the system will run with lower noise, but the max.
capacity will also reduce slightly.
3) Do not change the settings of other switches, wrong settings can make the system damage or other
malfunctions.
7. Precautions for Laying Refrigerant
■ Piping cautions on pipe handling
1) Protect the open end of the pipe against dust and moisture.
2) All pipe bends should be as gentle as possible. Use a pipe bender for bending.(Bending radius should be 30 to
40mm or larger.)
■ Selection of copper and heat insulation materials
When using commercial copper pipes and ttings, observe the following :
1) Insulation material: Polyethylene foam
Heat transfer rate: 0.041 to 0.052W/mK(0.035to 0.045kcal/mhoC) Refrigerant gas pipe's surface temperature
reaches 110oC max. Choose heat insulation materials that will withstand this temperature.
2) Be sure to insulate both the gas and liquid piping and to provide insulation dimensions as below.
Gas pipe Gas pipe insulation
O.D.:9.52mm,12.7mm Thickness:0.8mm I.D.:12-15mm,12.7mm Thickness:13mm min.
Liquid pipe Liquid pipe insulation
O.D.:6.35mm Thickness:0.8mm I.D.:18-10mm Thickness:10mm min.