4. Route the vapor and liquid lines.
5. Connect tubing and leak test.
6. Make electrical control connections.
7. Charge system.
8. Instruct owner.
UNIT PLACEMENT
1. Provide a base in the pre-determined location.
2. Remove the shipping carton and inspect for possible dam-
age.
3. Compressor tie-down bolts should remain tightened.
4. Position the unit on the base provided.
5. Sit unit on the (4) rubber elevating grommets provided with
the unit. These should be positioned as shown in Figure 1
to reduce noise and allow for proper drainage.
6. Make a hole(s) in the structure wall large enough to accom-
modate the insulated vapor line, the liquid line and the
wiring.
ELECTRICAL CONNECTIONS
1. Check the electrical supply to be sure that it meets the
values specified on the unit nameplate and wiring label.
2. Remove proper low voltage knockout. Remove plastic snap
bushing from instruction packet and insert in low voltage
knockout hole.
3. The complete connection diagram and schematic wiring
label is located on the inside surface of the unit electrical
box cover. Typical Field Wiring is shown in Figure 3.
4. All field wiring to be in accordance with national electrical
code (NEC) and/or local city codes.
NOTE: Power wiring, disconnect switch, and overcurrent pro-
tection to be supplied by installer. See Physical and
Electrical Data Table for proper sizes. USE COPPER
CONDUCTORS ONLY. Unit must be grounded with a
separate ground conductor wire.
5. Install the proper size weatherproof disconnect switch out-
doors and within sight of the unit.
6. Run power wiring from the disconnect switch to the unit.
7. Install the proper size time-delay fuses or circuit breaker,
and make the power supply connections.
8. Energize the crankcase heater, if applicable, to save time
by preheating the compressor oil while the remaining instal-
lation is completed.
RUBBER
ELEVATING
GROMMETS
(4)
Note: Do Not block drainage
holes with grommets.
UNIT
BASE
PAN
FIGURE 1 - POSITIONING OF RUBBER ELEVATING
GROMMETS
12" REAR
AND SIDES
TO POWER
SUPPLY
48" OVERHEAD
CLEARANCE
24" SERVICE
ACCESS
WEATHERPROOF
DISCONNECT
SWITCH
NEC CLASS 1
WIRING
TO
BLOWER
MOTOR
RELAY
NEC CLASS 2
WIRING
TO
INDOOR
COIL
SEAL OPENING(S) WITH
PERMAGUM OR EQUIVALENT
THERMOSTAT
NOTE: ALL OUTDOOR WIRING
MUST BE WEATHERPROOF
Sit unit on
rubber
elevator
grommets to
reduce noise
and allow for
proper
drainage.
Check local weather bureau for snow
accumulation / clearance
FIGURE 2 - TYPICAL INSTALLATION
515.26-N1Y
Central Environmental Systems
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