Hitachi RWM-(H)FSN3E, Руководство по обслуживанию

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3 Piping work and
refrigerant charge
SMGB0070 rev.1 - 08/2011
62
Item (2-10)HP
Maximum piping length (L)
Actual piping length 30
Equivalent piping length 40
Maximum height difference between indoor and
outdoor unit (H)
Outdoor unit higher than indoor unit 30
Indoor unit higher than outdoor unit 20
Refrigerant piping size
Piping connection size of outdoor unit & indoor unit
Outdoor unit
Pipe size
Indoor Unit
Pipe size
Gas pipe Liquid pipe Gas pipe Liquid pipe
RAS-2HVRN2 Ø 12.7 (1/2”)(1*) Ø 6.35 (1/4”) RWM-2.0FSN3E Ø 15.88 (5/8”)(1*) Ø 6.35 (1/4”)
RAS-3HVRNME-AF Ø 15.88 (5/8”) Ø 9.53 (3/8”) RWM-3.0FSN3E Ø 15.88 (5/8”) Ø 9.53 (3/8”)
RAS-4H(V)RNME-AF Ø 15.88 (5/8”) Ø 9.53 (3/8”) RWM-4.0FSN3E Ø 15.88 (5/8”) Ø 9.53 (3/8”)
RAS-5H(V)RNME-AF Ø 15.88 (5/8”) Ø 9.53 (3/8”) RWM-5.0FSN3E Ø 15.88 (5/8”) Ø 9.53 (3/8”)
RAS-6H(V)RNME-AF Ø 15.88 (5/8”) Ø 9.53 (3/8”) RWM-6.0FSN3E Ø 15.88 (5/8”) Ø 9.53 (3/8”)
RAS-8HRNME-AF Ø 25.4 (1”) Ø 9.53 (3/8”) RWM-8.0FSN3E Ø 25.4 (1”) Ø 9.53 (3/8”)
RAS-10HRNME-AF Ø 25.4 (1”) Ø 12.7 (1/2”) RWM-10.0FSN3E Ø 25.4 (1”) Ø 12.7 (1/2”)
N O T E
(1*): 2HP system only (RAS- RWM-2.0FSN3E). If using different piping size for outdoor unit and indoor
unit, a pipe adapter will be required: (Ø12.7 → Ø15.88).
The pipe adapter is factory supplied with the outdoor unit.
Connecting flare adapter (only for RAS-2HVRN2)
No. Description
1 Liquid line
2 Flare nut (Accessories)
3 Pipe (Accessories)
4 Indoor unit
5 Flare adapter (Accessories)
6 Gas line
7 Pipe (Field supplied)
1
2
3
4
5
6
7
The piping sizes for indoor unit and outdoor unit are different. Attach the flare adapter (accessories) at the indoor piping
union part.
Use the adequate flare adapter as follows:
Indoor unit
Flare adapter
Gas pipe Liquid pipe
2.0 HP
Big size
(Ø15.88→Ø12.70)
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