Daikin GYEQ20AN Service Manual page 61

SiAUY361411EA
7 Installing the Outdoor Unit
Heat retention work
Be sure to heat-insulate both fluid and gas pipes.
Use separate heat insulators to cover the fluid side and gas side pipes. Never use the same heat
insulator to cover both fluid and gas pipes because doing so would result in performance loss and
other problems.
Material: Fiberglass or heat-resistant ethylene foam with a thickness of 10 mm or greater and with an
allowable temperature limit of 120 °C or more (gas side) or 70 °C or more (fluid side).
Finish with bond, tape or sheet so that the
cut portions and joints of the heat insulators
do not open.
When wrapping the heat insulators with
t a p e , t a k e c a r e n o t t o b i n d t h e h e a t
i n s u l a t o r s t o o t i g h t l y, o r t h e y w i l l b e
compressed resulting in poor heat insulation.
When wrapping the heat insulators with tape, take care to prevent their cut portions from opening.
Also, take care not to bind the heat insulators too tightly, or they will be compressed resulting in
poor heat insulation.
When binding the indoor unit crossover cables together with a refrigerant pipe, lay the cables along
the external surface of the heat insulator. Do not lay the cables inside the heat insulator because
doing so would make the cables contact the refrigerant pipe and thermally deteriorate, resulting in
poor insulation which could cause short circuit problems.
Make sure that the link cable does not come into contact with any pipes that do not have a stop valve
or heat insulator.
Each pipe joint should be covered with a joint heat insulator and tightly bound with two clamps
(after the air tightness test).
Install the heat insulator (standard accessory) to the external filter.
The external filter may be replaced. Therefore, the heat retention racking of the external filter should
be fitted so as to allow it to be desorbed.
[Figure of external filter heat insulator]
• For gas pipe
Device Overview
(Top face)
(Side face)
524
– 22 –
Discharge gas pipe Suction gas pipe
Air conditioner pipe tape
Fluid pipe
Link
• For fluid pipe
(Top face)
(Side face)
325
Installation Work Manual
Insulator
026731-01E
060031-00EN01
0FGHP-EN0801 DGJ002
50