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1
Installation of outdoor
1 - 8 Refrigerant piping
1 - 8 - 9
Shutoff valve operation procedure
C
AUTION
1
Do not damage the cap sealing.
2
Always use a charge hose for service port connection.
3
After tightening the cap, check that no refrigerant leaks are present.
4
After working, securely tighten the cover of service port without fail by specified torque.
5
When loosening a flare nut, always use two wrenches in combination. When connecting the piping, always use a spanner and torque wrench in
combination to tighten the flare nut.
6
When connecting a flare nut, coat the flare (inner and outer faces) with ether oil or ester oil and hand-tighten the nut 3 to 4 turns as the initial
tightening.
7
Do not forget to open the stop valve before starting operation.
Remove the cap and turn the valve counter clockwise with the hexagon wrenches until it stops.
Discharge gas side
Liquid side
Suction gas side
Never remove the partition flange for any reason.
Full close on the suction gas side
1 - 9 Checks after installation
After the installation, check the following.
1
The shutoff valve
Make sure that the shutoff valve (both liquid and gas) is opened.
See the "Shutoff valve operation procedure" in chapter 10-9 and 10-10.
2
Additional refrigerant charge
The amount of refrigerant to be added to the unit should be written on the included "Added Refrigerant" plate and attached to the rear side of the
front cover.
3
Installation date
Be sure to keep record of the installation date on the sticker on the EL. COMPO. BOX cover according to EN60335-2-40.
• Installation procedure
[Heat pump system]
®
• VRV
Systems • Installation procedure
[Heat recovery system]
31
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