Daikin BEVN125AV1, Installation Manual

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English 3
2. BEFORE INSTALLATION
2-1 ABOUT THIS PRODUCT
1. This product uses R744 (CO
2
) refrigerant.
The utmost attention is required to handle R744 refrigerant, and strict measures must be taken to keep
impurities (including mineral oil and other types of oil as well as moisture) out of the system. Be sure to
follow the instructions in “
7. REFRIGERANT PIPING WORK ”.
2. The design pressure is 12.3 MPa (4.0 MPa for R410A). Therefore, the following conventional parts cannot
be used.
• Connection pipes
Thick-walled pipes are required. Refer to “ 7. REFRIGERANT PIPING WORK ” for the specifications of
the pipes.
• Flare nut connections
Unavailable. Perform brazing connections.
• Pipe brazing joints
Pipes with a maximum diameter of 12.7mm .... Make brazing connections with sleeve flare processing.
Pipes with a diameter of 15.9mm ..................... Use sockets sold as optional accessories.
• Elbows
Use products sold as optional accessories.
• Installation instruments that must withstand high pressures, such as charge hoses and pressure gauges
Use pressure-resistant instruments that withstand a minimum pressure of 12.3 MPa.
3. The indoor unit is an R744-dedicated unit. The following indoor unit models are connectable.
(Do not connect other indoor unit models, or otherwise an inner piping rupture will result.)
2-2 COMBINATION
Attach a BEV unit to the indoor unit. As shown in the below table.
2-3 ACCESSORIES
Check if the following accessories are included with your unit.
BEV unit BEVN32AV1 BEVN50AV1 BEVN125AV1
Indoor unit
FXSN20AV1
FXSN25AV1
FXSN32AV1
FXSN40AV1
FXSN50AV1 FXSN63AV1
FXSN100AV1
Name Clamp (3) Insulation for fitting (4) Installation manual
Quantity 10 pcs. 2 pcs. 1 pc.
Shape
(1) 6 short pieces
(2) 4 long pieces
For liquid piping × 2
(I. D.
φ
35)
(5) Caution label
1 pc.
Attach this to the EL. COMPO. BOX
lid of the indoor unit after installation.
01_EN_3P233622-3F.fm Page 3 Monday, December 22, 2008 10:59 AM