Connecting City Plain Water Source Line To Unit; Connecting Electrical Power Circuit To The Unit - Cornelius R-404A REFRIGERANT Service Manual

2. Connect the CO source line to the Unit CO
2
TIME.

CONNECTING CITY PLAIN WATER SOURCE LINE TO UNIT

NOTE: The Units require connection to a city plain water source line with a minimum water pressure of
12-psig. IMI Cornelius Inc. recommends that a water shutoff valve and water filter be installed in the City
plain water source line (see Figure 2). A Cornelius Water Filter (P/N 313860000) and Quick Disconnect
Set (P/N 313867000) are recommended.
1. Connect and route city plain water source line up to the Unit.
2. Before connecting the City plain water source line to the Unit, open shutoff valve in City plain water source
line for a period of time to flush out any metal shavings, then close valve.
3. Connect the city plain water source line to the Unit plain water inlet line. Seal connection with tapered gas-
ket, black(item 4). Do not open the city plain source line support valve at this time.

CONNECTING ELECTRICAL POWER CIRCUIT TO THE UNIT

(see Figure 16)
WARNING: Make sure Unit 30-amp (60 Hz Unit) or 50-amp (50 Hz Unit) minimum-rated
disconnect switch (not provided) or equivalent HACR circuit breaker is in ''OFF'' position.
60 HZ Unit.
IMPORTANT: Power circuit voltage across L
control box, with refrigeration compressor operating, must be in the range of 198-253 VAC, 60 Hz
single-phase for proper operation. Use No. 10 AWG copper wire, or larger, depending upon line length,
in suitable conduit or BX sheath. POWER CIRCUIT TO UNIT MUST BE MADE UP OF COPPER
CONDUCTORS AND ALL WIRING MUST CONFORM TO NATIONAL AND LOCAL CODES.
50 HZ Unit.
IMPORTANT: Power circuit voltage across L
control box, with refrigeration compressor operating, must be in the operating range of 209-253 VAC, 50
Hz single-phase for proper operation.
1. Remove cover from electrical box located in lower back side of the Unit.
WARNING: The Unit must be electrically grounded to avoid possible fatal electrical shock
or serious injury to the operator. A green screw, with lock washer, is provided inside the
electrical box to connect power circuit ground wire, which will electrically ground the Unit.
2. Connect electrical power circuit from a 30-amp (60 Hz Unit) or 30-amps (50 Hz Unit) minimum-rated discon-
nect switch (not provided) fused at 30-amps (60 Hz Unit) or 30-amps (50 Hz Unit) (slow-blow) or through an
equivalent HACR circuit breaker to electrical wires inside the electrical control box. Secure the connections
with red wire nuts. MAKE SURE GROUND WIRE IS CONNECTED TO GREEN GROUND SCREW INSIDE
THE ELECTRICAL BOX.
3. Install the electrical box cover and secure with screws.
inlet line. DO NOT TURN ON THE CO
2
and L terminals on the contactor inside the lower electrical
1 2
and L terminals on the contactor inside the lower electrical
1 2
11
SOURCE AT THIS
2
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