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Piping installation
Installer reference guide
77
E EHFH03S18D
Daikin Altherma 3 R F
4P596806-1C – 2022.09
Clockwise to close
3
When the stop valve CANNOT be turned any further, stop turning.
4
Install the stop valve cover.
Result:
The valve is now open/closed.
To handle the stem cap
▪
The stem cap is sealed where indicated with the arrow. Do NOT damage it.
▪
After handling the stop valve, tighten the stem cap, and check for refrigerant
leaks.
Item
Tightening torque (N∙m)
Stem cap, liquid side
14.2~17.2
Stem cap, gas side
22~28
To handle the service cap
▪
ALWAYS use a charge hose equipped with a valve depressor pin, since the service
port is a Schrader type valve.
▪
After handling the service port, tighten the service port cap, and check for
refrigerant leaks.
Item
Tightening torque (N∙m)
Service port cap
11~14
8.2.8 To connect the refrigerant piping to the outdoor unit
▪
Piping length.
Keep field piping as short as possible.
▪
Piping protection.
Protect the field piping against physical damage.
1
Connect the liquid refrigerant connection from the indoor unit to the liquid
stop valve of the outdoor unit.
a
c
b
a
Liquid stop valve
b
Gas stop valve
c
Service port
2
Connect the gas refrigerant connection from the indoor unit to the gas stop
valve of the outdoor unit.
NOTICE
It is recommended that the refrigerant piping between indoor and outdoor unit is
installed in a ducting or the refrigerant piping is wrapped with finishing tape.
