Daikin FBQ20EAVAK Installation Manual page 78

01_EN_3P281953-1B.fm Page 17 Tu esday, January 25, 2011 3:35 PM
〈 Precautions for handling servicing port 〉
• Use a push-rod-provided charging hose for operation.
• Be sure to tighten the valve lid securely after operation.
Tightening torque
11.5 – 13.9N · m
〈 Precautions for connecting pipes 〉
• Avoid the connection pipes of indoor and outdoor units from getting in contact with the terminal of the
compressor.
• If installing the outdoor unit higher than the indoor unit, caulk the space around insulation and tubes
because condensation on the check valve can seep through to the indoor unit side. Adjust the height of the
insulation material on liquid pipe when it has the possibility of getting in contact with the terminal. Also
make sure that the connecting piping does not touch the mounting bolt of the compressor.
(Refer to Fig. 15)
〈 Precautions regarding insulation 〉
Enhance the insulating material of the refrigerant piping according to the installation conditions. If this is not
done, condensation may form on the surface of the insulation material. Please refer to the target values
shown below.
• When the temperature and humidity conditions are 30°C and RH 75% or more: thickness of the
insulation material is 15 mm or more.
• When the temperature and humidity conditions are 30°C and RH 80% or more: thickness of the
insulation material is 20 mm or more.
• Always insulate the liquid and gas-side interunit piping as well as the refrigerant branch kit.
(Not insulating them may cause leaking.)
(The highest temperature that the gas-side piping can reach is around 120°C, so be sure to use insulating
material which is very resistant.)
CAUTION
For local insulation, be sure to insulate all the way to the pipe connections inside the unit.
(Exposed piping may cause leaking or burns on contact.)
17
Valve lid
Stop valve (lid attachment) Fig. 14
English