Daikin FBQ20EAVAK Installation Manual page 77

01_EN_3P281953-1B.fm Page 16 Tu esday, January 25, 2011 3:35 PM
Do not apply force to the valve lid.
Using a wrench on the valve lid or body may cause refrigerant to leak.
• When using the low outdoor temperature heating mode, the pressure on the low pressure side might drop,
so the flare nut on the stop valve should be sealed completely with silicon sealant or the like in order to
prevent frost from forming on it (both gas and liquid sides). (Refer to Fig. 12)
〈 How to Operate the Stop Valve 〉 (Refer to Fig. 13)
Use hexagonal wrenches 4 mm and 6 mm.
To open:
1. Insert one hex wrench onto the valve rod and turn counter-clockwise.
2. Stop when the valve rod no longer turns. It is now open.
To close:
1. Insert one hex wrench onto the valve rod and turn clockwise.
2. Stop when the valve rod no longer turns. It is now closed.
〈 Precautions for handling valve lid 〉
• A seal is attached to the point indicated by the arrow. Take care not to damage it. (Refer to Fig. 14)
• Be sure to tighten the valve lid securely after operating the valves.
Tightening torque
Liquid side
13.5 – 16.5N · m
English
Spanner
Torque
wrench
Silicon sealing pad
(Make sure that there is no gap)
Fig. 12
Direction to open
Fig. 13 Liquid side
Gas side
22.5 – 27.5N · m
Do not use wrenches
on the valve lid or body.
Direction to open
Gas side
16