Rheem (-)LKBA180CL Installation Instructions Manual Download

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IX. CONDENSATE DRAIN

The condensate drain connection of the evaporator is 1" nomi-
nal male pipe thread.

IMPORTANT:

Install a condensate trap

to ensure proper condensate drainage. See Figure 15.

ELECTRICAL WIRING

Field wiring must comply with the National Electrical Code* and
local ordinances that may apply.

*C.E.C. in Canada

A. POWER WIRING

1. This unit incorporates single-point electrical connections

for the unit and electric heat accessory.

2. It is important that proper electrical power is available to

the unit. Voltage should not vary more than 10% from the
values marked on the unit rating plate. Phase voltages
must be balanced within 3%.

3. Install a branch circuit disconnect within sight of the unit.

See Figure 16. Use the unit rating plate or Tables A, B, C,
and D to determine the required size.

4. The branch circuit wire must be sized in accordance with

the National Electrical Code (C.E.C. in Canada) and local
ordinances that may apply using the minimum circuit
ampacity found on the unit rating plate.

5. Field-installed power wiring must be run through ground-

ed rain-tight conduit attached to the unit power entry
panel and connected as follows:

UNITS WITHOUT ELECTRIC HEAT -

Connect power

wiring to the power terminal block located on the left side
of the electric heat compartment. Connect the ground
wire to the adjacent ground lug.

UNITS WITH FACTORY INSTALLED ELECTRIC HEAT -

Connect power wiring to the power terminal block located
on the electric heater kit. Connect the ground wire to the
adjacent ground lug. DO NOT connect aluminum wiring
directly to the electric heater terminal block. Wiring to the
unit contactors is factory-connected.

6. For field installation of an electric heater kit, follow the

instructions below. Refer to the information supplied with
the kit.

a. Removing screws as required, open heater access

door and detach adjacent power entry panel.

b. Remove unit contactor wires (1L1, 1L2, 1L3) from unit

terminal block on the left side of the electric heat com-
partment. Remove and discard the terminal block and
the adjacent ground lug.

c. Remove the heater kit block-off panel and install the

heater kit in its place using the screws previously
removed.

d. Connect the unit contactor wires (1L1, 1L2, 1L3) to the

compressor fuse block on the heater kit.

e. Re-install the power entry panel & run conduit and the

proper size field wiring through the opening in the
panel.

f. Connect field wiring to the power terminal block located

on the electric heater kit. Connect ground wire to the
adjacent ground lug.

g. Connect heater kit control plug to the receptacle on the

control wiring harness.

h. Close heater access door and secure with screws pre-

viously removed.

B. CONTROL WIRING (Class II)

1. Low voltage wiring should not be run in conduit with

power wiring.

2. Control wiring is routed through the 7/8" hole in the unit

side panel. See Figure 7. Use a minimum #18 AWG ther-
mostat wire. For wire lengths exceeding 50', use #16
AWG thermostat wire. Connect the control wiring to the
low voltage terminal block located below the unit control
box.

3. It is necessary that only approved thermostats be used.

Please contact your distributor for part number informa-
tion. See Table for a list of recommended thermostats.

4. Figure 18 shows representative low voltage connection

diagrams. Read your thermostat installation instructions
for any special requirements for your specific thermostat.

NOTE — Units installed in Canada require that an out-
door thermostat (30,000 min. cycles of endurance) be
installed and be wired with C.E.C. Class I wiring.

D. INTERNAL WIRING

1. A diagram of the internal wiring of this unit is located on

the inside of the electrical access panel. If any of the origi-
nal wire, as supplied with the appliance must be replaced,
the wire gauge and insulation must be the same as origi-
nal wiring.

FIGURE 15. CONDENSATE DRAIN

FIGURE 16. BRANCH CIRCUIT DISCONNECT

LOCATION

A0886-24

Recommended Thermostats for 15, 20, & 25 Ton Package Air Conditioner

Universal

Type

Stages

Manufacturer

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Parts

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