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Installation procedure
Matters needing attention
Never use oxygen,flamable and poisonous gases for the leak test.
Indoor
Tightly
closed
Tightly
closed
Indoor unit
Detailed diagram of the
three-way valve
To the gauge
distributor
(Liquid side)access hole
(Liquid side)three-way valve
Step 1:Charge for more than 3 minutes under 0.3MPa(3.0kg/cm
Step 2:Charge for more than 3 minutes under 1.5MPa(15kg/cm
--Serious leakage may be found.
Step 3:Charge for more than 24 hours under 3.0MPa(3.0kg/cm
--Small leakage may be found.
Check for pressure decrease
Without pressure decrease-Pass
With pressure decrease-Check for leaage.
There will be a 0.01MPa(0.1kg/cm
the 24-hour pressure charge.It should be corrected during the test.
Outdoor
Solder joint
Solder joint
Tightly
Solder joint
closed
(Gas side )access hole
(Gas side)three-way valve
Field tube
Field tube
installation
installation
g) pressure change for every 1 C ambient temperature change during
2
Low-pressure
gauge
Three-way valve fully
closed(gas side)
Access hole
Access hole
Outdoor unit
Three-way valve fully closed
liquid side
To the unit
g)
2
g)
2
g)
2
27
Outdoor unit
High-pressure
gauge
VL VH
Gauge distributor
6.4
Copper
pipe
Relief valve
6.4
Copper pipe
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