Daikin FBQ20EAVAK, Installation Manual

Page: 73 / 124

English 12
NOTE
•
If the drain holes of the outdoor unit are covered with the mounting bracket or the floor, raise the unit to pro-
vide the space of more than 100 mm under the leg of the outdoor unit.
Installation method of outdoor unit
• Check the strength and level of the installation ground so that the unit will not cause any operating vibration
or noise after installation.
•
In accordance with the foundation drawing in Fig. 6, fix the unit securely by means of the foundation bolts.
(Prepare four sets of M12 foundation bolts, nuts and washers each which are available on the market.)
•
It is best to screw in the foundation bolts until their length are 20 mm from the foundation surface.
• Fix the outdoor unit to the foundation bolts using nuts with resin washers.
(Refer to the right-hand drawing.)
If the coating on the fastening area is stripped off, the nuts rust easily.
〈
Installation method of fitting for prevention of overturning
〉
• If steps need to be taken to prevent the unit from tipping over, use the tipping prevention clasps (option).
6. REFRIGERANT PIPING WORK
6-1 PRECAUTIONS ON REFRIGERANT PIPING
〈
See the indoor unit’s installation manual for details on the refrigerant piping for indoor units.
〉
CAUTION
To plumbing persons
• Use R410A as additional refrigerant for charging.
•
Do not use a flux when brazing the refrigerant pipe joints. Use phosphor copper brazing (BCuP) which does
not require flux.
(Using a chlorine flux may cause the pipes to corrode, and if it contains fluoride it may cause the refrigerant
lubricant to deteriorate, adversely affecting the refrigerant piping system.)
•
After chapter
8. REFILLING THE REFRIGERANT
is completed, be sure to open the stop valves before
performing 11. ON SITE SETTINGS .
(Operating the unit with the valve shut will break the compressor.)
20
Drawing of the foundation
Fig. 6
Resin
washers
Tipping prevention clasps (option)
(Wiring system)
01_EN_3P281953-1B.fm Page 12 Tu esday, January 25, 2011 3:35 PM