Refrigerant Piping Work - EAS ELECTRIC 52 Manual De Usuario

4. REFRIGERANT PIPING WORK

4.3 REFRIGERANT PIPE
Liquid Side Gas Side
<D6.35mm <P12.7mm
52
<D9.52mm <D15.88mm
71-90
<D9.52mm <D15.88mm
105-140
<D9.52mm <D15.88mm
170
NOTE: 1) Please use tools for R41 0A/R32 system respectively;
2) When the pipe length is over 5m, the additional refrigerant should be added according to the
piping length.
4.4 AIR EVACUATION
Connect the charge hose from the manifold gauge to the service port of the gas side packed valve.
■
Connect the charge hose to the port of the vacuum pump.
■
Fully open the handle Lo of manifold gauge.
■
Operate the vacuum pump to evacuate air from the system until 76cmHg.
■
Clase the handle Lo of manifold gauge.
■
Fully open the valve stem of the packed valves.
■
■ Remove the charging hose from the service port.
Securely tighten caps of packed valve.
■
4.5 LEAKAGE TEST
After the piping work is finished, make sure to check the connection part of each refrigerant pipe and confirm
that there is no gas leak by applying soapy water to them or by using a leak detector specific for HFC refrigerants.
Refer below picture for illustration.
A: Low pressure stop valve
C& D: lndoor unit fiare nuts
td;J•I•
Allowable
Max. Height
pipe length (m) difference m
30
40
50
65
Handle Hi
J;;;f,
Charge hose
v,�,m p,mp
Check-point of indoor unit
B: High pressure stop valve
V.1
Charge less
length (m) per meter (R41 0A/R32)
20 5
20 5
25 5
5
30
Additional charge
15/12 g/m
30/24 g/m
30/24 g/m
30/24 g/m