Haier AD88NAHAAA Operation And Instruction Manual - page 36
INSTALLATION MANUAL FOR OUTDOOR UNIT
35
Outdoor unit pipelines connection
According to the pipeline connection method connection the distribute pipes and inlet & outlet liquid pipes.
Matters needing attention
Never use oxygen,flamable and poisonous gases for the leak test.
Field tube
installation
Field tube
installation
T
o the unit
To the unit
(Gas side)three-way valve
(Gas side )access hole
Detailed diagram of the
three-way valve
To the gauge
distributor
(Liquid side)access hole
Three-way valve fully closed
liquid side
6.4
6.4
Copper pipe
Relief valve
Nitrogen bottle
VL VH
Gauge distributor
High-pressure
gauge
Low-pressure
gauge
Three-way valve fully
closed(gas side)
Solder joint
Solder joint
Tightly
closed
Indoor unit
Indoor
Outdoor
Access hole
Copper
pipe
Solder joint
Tightly
closed
Tightly
closed
Access hole
Outdoor unit
(Liquid side)three-way valve
Leak Test
Leak test must be made after connection of the refrigerant pipe according to the following diagram.
Close all the gas and liquid valves.To prevent nitrogen gas from invading the outdoor circulating
system,close the valve tightly before pressure increase,(Both the gas and liquid valves must be tightly
closed.)
Every cooling system must be charged slowly from the gas and liquid valves.
It must be charged from the gas and liquid valves.