Daikin R32 Split Series Manual de instalação - Página 8

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Daikin R32 Split Series Manual de instalação
Outdoor Unit Installation
Cautions on pipe handling
• Protect the open end of the pipe from dust and moisture.
• All pipe bends should be as gentle as possible. Use a pipe bender for bending.
Selection of copper and heat insulation materials
When using commercial copper pipes and fittings, observe the following:
• Insulation material: Polyethylene foam
Heat transfer rate: 0.041 to 0.052W/mK (0.024 to 0.030Btu/fth°F) (0.035 to
0.045kcal/mh°C)
Be sure to use insulation that is designed for use with HVAC Systems.
• ACR Copper only.
• Be sure to insulate both the gas and liquid piping and observe the insulation
dimensions as below.
O.D. 1/2 inch
Gas side
O.D. 5/8 inch
O.D. 1/4 inch
Liquid side
• Use separate thermal insulation pipes for gas and liquid refrigerant pipes.
• Using finishing tape, bundle and wrap the indoor unit piping and drain hose
together so that the drain hose is below the other piping.
5.

Pressure test and evacuating system

WARNING
• Make sure that air or any matter other than refrigerant (R32) does not get into the refrigeration cycle.
• If refrigerant gas leaks should occur, ventilate the room as soon and as much as possible.
• R32, as well as other refrigerants, should always be recovered and never be released directly into the environment.
• Use tools for R32 or R410A (such as the gauge manifold, charging hose, or vacuum pump adapter).
CAUTION
• It is highly recommended that you do not open/close the stop valves when the outdoor temperature is below −5°F (−21°C)
as this may result in refrigerant leakage.
7
Piping size
Minimum bend radius
1-9/16 inch (40mm)
(12.7mm)
or more
1-15/16 inch (50mm)
(15.9mm)
or more
1-3/16 inch (30mm)
(6.4mm)
or more
Piping thickness
Thermal insulation size
0.031 inch (0.8mm)
I.D. 9/16-5/8 inch
(C1220T-O)
(14-16mm)
0.039 inch (1.0mm)
I.D. 5/8-13/16 inch
(C1220T-O)
(16-20mm)
0.031 inch (0.8mm)
I.D. 5/16-13/32 inch
(C1220T-O)
(8-10mm)
Be sure to
place a cap.
Rain
If no flare cap
is available,
cover the flare
mouth with tape
to keep dirt and
water out.
Thermal insulation
thickness
13/32 inch
(10mm) Min.
Gas pipe
Gas pipe
insulation
Finishing tape
Drain hose
Wall
Liquid pipe
Liquid pipe
insulation
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