Trane IntelliPak SCRF 25, Инструкция по установке, эксплуатации и обслуживанию, Страница: 42 / 120

42 SCXF-SVX01Q-EN
W WA AR RN NIIN NG G
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sse erriio ou uss iin njju urry y..
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C CA AU UT TIIO ON N
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N NO OT TIIC CE E
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To charge the system:
1. Verify system leak check (including interconnecting
piping for air cooled systems) and evacuation are
complete before adding refrigerant.
See “Refrigerant Leak Test Procedure,” p. 92 and
“System Evacuation Procedures,” p. 93
2. Ensure field-supplied unit disconnect is OFF. Verify
that the unit 115 volt control circuit switch is OFF
and reset relays have been unplugged, to prevent
inadvertent compressor starts.
3. Turn field-supplied unit disconnect ON to energize
crankcase heaters. Verify crankcase heaters are
operating.
4. Verify all service valves are open.
5. See CSC General Data for unit refrigerant charge.
6. See for additional charge required based on field
piping size and length. Add this to the charge
amount from Step 5 for the total charge.
N No otte e:: Step 6 not required for field piping under 25
feet, or for water cooled system.
7. At the liquid line angle valve add as much R-410A
LIQUID as possible up to, but not exceeding, total
charge amount. Depending on conditions, it may
not be possible to add more than 60% of the total
charge. This will be adequate for compressor
startup. More charge will be added after
compressors are started. Use an accurate scale to
measure and record preliminary amount of
refrigerant added to each circuit.
N No otte e:: A Aiirr C Co oo olle ed d O On nlly y:: Add charge at the
condenser access valve or field supplied
discharge line access valve. If angle valve is
used for charging, liquid line solenoid valve
should be open.
8. DO NOT add refrigerant in the suction line during
preliminary charging to minimize refrigerant in
system low side prior to compressor start.
9. Record charge amount added.
10. If total charge is not reached see Final Refrigerant
Charge in Startup.
11. Verify wiring has been returned to original.
N No otte e:: A Aiirr C Co oo olle ed d O On nlly y:: Verify liquid line solenoid
valve has been returned to original.
Table 24. Charge add —lbs per 10 ft of line
Piping Size (in) Liquid Line (lbs)
Discharge Line
(lbs)
5/8 1.07 -
7/8
2.23 0.31
1 1/8
- 0.53
1 3/8
- 0.80
Note: Amounts listed are for 10 ft of pipe above 25'. Actual
requirements will be in direct proportion to the actual length
of piping.
IIn nsstta alllla attiio on n -- M Me ecch ha an niicca all