Daikin GYEQ20AN, Руководство по обслуживанию

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Installation Work Manual SiAUY361411EA
43 Device Overview
0FGHP-EN0801 DGJ002
– 15 –
7 Installing the Outdoor Unit
Performing piping work using the external filter
WARNING
z Install the external filter close to the outdoor unit.
z When the vibration proof stand is used, do not install the external filter close to the
outdoor unit.
The vibration of the outdoor unit may break the pipe and cause a refrigerant leak.
z Fix the piping on both ends of the external filter. When the piping fixation is
insufficient, the vibration breaks the pipe and causes a refrigerant leak.
z When braze welding is performed on the pipe, be sure to use nitrogen blow.
Without nitrogen blow, it may cause filter clogging with oxidized scale, compressor
trouble, etc.
Install the external filter on the refrigerant pipe for each outdoor unit. Refer to the installation example and
determine the installation position.
z When braze welding is performed on the external filter for the gas pipe, be sure to remove the gasket.
z When braze welding is performed on the gas pipe flange, cool the flange base using a damp cloth or the like.
z Apply refrigerating machine oil (FVC68D) to the gas pipe flange gasket portion.
z L o o s e l y t i g h t e n t h e g a s p i p e f l a n g e b o l t s , a n d t h e n f u l l y t i g h t e n t h e m d i a g o n a l l y.
(Tightening torque: 49±5.0 N·m)
z
Tightening torque for fluid pipe flare is 61.8 ~ 75.4 N·m.
z Be careful of the direction of the external filter for the gas pipe (indoor unit side outdoor unit side).
z Install the external filter servicing port for the gas pipe in a direction that allows maintenance to be performed.
z Install the filter between the first and second clamps of the connecting pipe, in a position from where
maintenance can be performed.
z Install the external filter to a position where the heat insulator can be removed.
z For the first and second clamps, clamp one side of the fluid pipe external filter within 0.3m from
center and clamp the gas pipe external filter within 0.75m from center.
z Since the filter may need to be replaced, locally procured finishing and racking should be fitted so
that they can be desorbed.
z When the racking, etc. is not fitted, perform waterproofing to the external filter heat insulator.
[Installation example]
Piping fixed part
Piping fixed part
Second clamp
First clamp
Suction gas pipe
Discharge gas pipe
Fluid pipe
Indoor unit side
1.5m or more
(when the vibration proof stand is used)
within 3.0m
1.5m or more
(when the vibration proof stand is used)
within 3.0m
Outdoor unit
Be careful of the direction.
Indoor unit side Outdoor unit side
within 0.75m within 0.75m
Piping fixed part
within 0.3m *1 within 0.3m *1
within 1.5m
*1 One side should be within 0.3m
059512-00EN07