IMSS E3265
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low pressure switch must be wired in series with the compressor power supply as shown in
diagram below.
1.
Mount condensing unit indoors as close to the remote display case as practical. The
refrigeration line should be as short as possible and must not exceed 30 feet.
2.
All refrigeration and/or electrical materials between the condensing unit and display case are
to be supplied by installing contractor.
3.
Route properly sized and designed refrigeration lines from the condensing unit to the cabinet.
Horizontal suction lines should be pitched downward towards the condensing unit at least ½”
per 10’ run to aid the oil drainage. A “P” trap must be installed in the suction line at the foot
of every riser to insure oil return. Dry nitrogen must be used to flow through tubing while
brazing refrigeration lines.
4.
Suction line must be insulated the entire length with Armaflex (or equivalent). Do not run
liquid line inside insulation with suction line.
5.
The remote high/low-pressure control must be mounted, wired and set pressures by the
installer.
6.
Leak check condensing unit, cabinet, and all connecting tubing. Cabinet and condensing unit
tubing should be checked to insure no leaks occurred during shipping or from rough
handling.
Make certain all refrigeration valves are opened and evacuate system to 500 microns. Charge
the system with refrigerant type specified on the data plates.
REMOTE
HIGH LOW
PRESSURE
CONTROL
LIQUID LINE
SUCTION LINE (INSULATED)
REMOTE
CONDENSING
UNIT
EVAPORATOR
COILS
DISPLAY CASE
EXPANSION
VALVE
HIGH
LOW
LIQUID LINE
SOLENOID VALVE
SIGHT GLASS
DRIER/FILTER
FIELD CONNECTION
HOT
FUSED
POWER
SUPPLY
DEFROST
TERMINATE
PROBE
ELECTRONIC
CONTROL
AIR TEMP. CONTROL PROBE
FUSED
CASE
POWER
