11.1. Evacuation of the installation
Required tools:
Hexagonal wrench, adjustable wrench, torque
wrenches, wrench to hold the joints, gas leak
detector, and charging set.
The air in the indoor unit and in the piping must be purged. If air
remains in the refrigeration pipings, it will affect the compressor,
reduce the cooling capacity, and could lead to a malfunction.
(Indoor unit)
(Li qu id s id e)
(Ou tdoor u ni t)
(Gas side)
3-way
valve
Open
Low
High
Cl os e
Open
Vacu um pump
3-way
valve
Close
Procedure:
Connect two charging hoses with push pins to the Low
and High sides of a charging set and the service ports
of 3-way valves.
Connect the centre hose of the charging set to a
vacuum pump.
Turn on the power switch of the vacuum pump and
make sure that the needle in the gauge moves from 0
cmHg (0 Mpa) to -76 cmHg (-0.1 Mpa). Then evacuate
the air for approximately 1 hour.
Close the valve of both the Low and High sides of the
charging set and turn off the vacuum pump. Make sure
that the needle in the gauge does not move after
approximately 5 minutes.
BE SURE TO TAKE THIS PROCEDURE IN ORDER TO
AVOID REFRIGERANT
LEAKAGE.
Disconnect the charging hose from the vacuum pump
and from the service ports of the 3-way valves.
1.
Be sure to connect the end of the charging hose with the
push pin to the service port.
2.
3.
4.
5.
●
GAS
6
7.
8.
.Tighten the service port caps of both the 3-way valve
at a torque of 18 N.m with a torque wrench.
Remove the valve caps of both the 3-way valves.
Position both of the valves to
using a hexagonal
wrench (4 mm).
Mount valve caps onto both the 3-way valves.
“
open
”
Be sure to check for gas leakage.
●
When installing an air conditioner,be sure to evacuate the air inside the indoor unit and pipes in the following procedure.
31
Service port cap
Be sure, using a torque wrench to tighten the service port cap(after using the service port),so that it prevents the gas
leakage from the refrigeration cycle.
Caution
If gauge needle does not move from 0 cmHg(0 Mpa) to -76cmHg
(-0.1MPa) in step (3) above, take the following measures:
If the leaks stop when the piping connections are tightened
further, continue working from step (3).
If the leaks do not stop when the connections are retightened,
repair the location of the leak.
CS-C45FFH / CU-C45FFH
Summary of Contents for CS-C45FFH
Page 8: ...8 4 Dimensions Indoor Unit CS C45FFH CU C45FFH 357 23 5X4 1880 16 5 56 Remote Controller ...
Page 9: ...9 Outdoor Unit CS C45FFH CU C45FFH CU C45FFH 900 620 140 40 5 320 ...
Page 43: ...CS C45FFH CS C45FFH CU C45FFH 43 44 37 38 39 40 41 42 14 13 43 ...
Page 45: ...17 Exploded View CS C45FFH CU C45FFH 45 ...
Page 46: ...CS C45FFH CU C45FFH 46 ...
