Qlima S-JA 3523 Gebrauchsanleitung Seite 130

8. If there is a change in system pressure, refer to Gas Leak Check section for information on how to
check for leaks. If there is no change in system pressure, unscrew the cap from the packed valve (high
pressure valve).
9. Insert hexagonal wrench into the packed valve (high pressure valve) and open the valve by turning
the wrench in a 1/4 counterclockwise turn. Listen for gas to exit the system, then close the valve after
5 seconds.
10. Watch the Pressure Gauge for one minute to make sure that there is no change in pressure. The
Pressure Gauge should read slightly higher than atmospheric pressure.
11. Remove the charge hose from the service port.
Flare nut
valve body
valve stem
12. Using hexagonal wrench, fully open both the high pressure and low pressure valves.
13. Tighten valve caps on all three valves (service port, high pressure, low pressure) by hand. You may
tighten it further using a torque wrench if needed.
OPEN VALVE STEMS GENTLY
When opening valve stems, turn the hexagonal wrench until it hits against the stopper. Do not
try to force the valve to open further.
NOTE ON ADDING REFRIGERANT
Some systems require additional charging depending on pipe lengths. The standard pipe length varies
according to local regulations. For example, in North America, the standard pipe length is 7.5m (25').
In other areas, the standard pipe length is 5m (16'). The refrigerant should be charged from the service
port on the outdoor unit's low pressure valve. The additional refrigerant to be charged can be
calculated using the following formula:
ADDITIONAL REFRIGERANT PER PIPE LENGTH
Connective Pipe
Length (m)
< Standard pipe length
> Standard pipe
length
For R290 refrigerant unit, the total amount of refrigerant to be charged is no more than: 387g (<=9000-
tu/h), 447g(>9000Btu/h and <=12000Btu/h), 547g(>12000Btu/h and <=18000Btu/h), 632g(>18000Btu/h and
<=24000Btu/h).
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130
Cap
Air Purging
Method
Vacuum Pump
Liquid Side: Ø 6.35 (ø 0.25")
R32:
(Pipe length – standard length) x 12g/m
(Pipe length – standard length) x 0.13oZ/ft
R290:
(Pipe length – standard length) x 10g/m
Vacuum Pump (Pipe length – standard length) x 0.10oZ/ft
R410A:
(Pipe length – standard length) x 15g/m
(Pipe length – standard length) x 0.16oZ/ft
R22:
(Pipe length – standard length) x 20g/m
(Pipe length – standard length) x 0.21oZ/ft
Additional Refrigerant
N/A
Liquid Side: Ø 9.52 (ø 0.375")
R32:
(Pipe length – standard length) x 24g/m
(Pipe length – standard length) x 0.26oZ/ft
R290:
(Pipe length – standard length) x 18g/m
(Pipe length – standard length) x 0.19oZ/ft
R410A:
(Pipe length – standard length) x 30g/m
(Pipe length – standard length) x 0.32oZ/ft
R22:
(Pipe length – standard length) x 40g/m
(Pipe length – standard length) x 0.42oZ/ft