Trane Modular 20 to 35 Tons Instalační manuál stáhnout pdf (Strana 15)

Installation - Mechanical

CXRC-SVX01F-EN 15

Leveling the Unit

Before tightening down the mounting bolts, level the unit

carefully. Use the unit base rail as a reference. Level the

unit to within ¼” over its entire length. Use shims if

adjustable isolators are not used.

Refrigerant Piping

General Refrigerant Recommendations

Liquid Line Components

Indoor portion of liquid line should include service valve,

charging valve, thermal expansion valve, sight class/

moisture indicator, filter drier and solenoid valve. (Others

as required by job specifications.) If the CCRC/CIRC is

coupled with either SCRF/SIRF or SCRG/SIRG, these

components are factory installed in the indoor unit, except

filter driers which are ship-with, for field installation.

CCRC/CIRC units also include a charging valve.

• Sight glass/moisture indicators aid in troubleshooting,

charging and servicing the system. Locate between

filter drier and expansion valve.

• Filter-driers are provided for field installation. Locate

near evaporator.

• Solenoid valves should be located near the evaporator.

Discharge Line Components

Indoor portion of discharge line should include access

valve and check valve. If the CCRC/CIRC is coupled with

either SCRF/SIRF or SCRG/SIRG, these components are

factory installed on the indoor unit. Install other discharge

line components as required by job specifications (hot gas

mufflers, pipe anchors, oil traps, etc.) to provide proper

system operation, prevent excessive vibration and assure

proper oil return to the compressor. Also recommended

are discharge shutoff valves in each hot gas line near the

condenser to facilitate refrigerant storage in the

condenser during service procedures. When optional

discharge line ball valves are present in the indoor section,

installation of field supplied discharge line access valves

near the indoor unit may aid in installation and service.

Note: See Figure 17, p. 16 for a typical refrigerant piping

configuration that may be used in place of a double

riser system (not recommended).This

arrangement assures adequate oil return to the

suction line, even at partial load conditions. Refer

toTrane Reciprocating Refrigeration Manual for

more specific piping recommendations.

Figure 14. Isolator locations for CCRC/CIRC 20-32 tons

Figure 15. Isolator locations for CCRC/CIRC 35-40 tons

Figure 16. Isolator locations for CCRC/CIRC 50-60 tons

NOTICE:

Compressor Damage!

To prevent possible refrigerant drain back into

compressor during off cycle, if no discharge check valve

is used, drop discharge line well below compressor

discharge level before beginning vertical rise. Failure to

do so could cause compressor damage.

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