# 48392M005
Page 5
Figure 5
Electrical Access
Heater Power Entry
Thermostat
Entry
Line Voltage
Entry
Unit must be grounded in accordance with
national and local codes. Failure to ground unit
properly can result in personal injury or death.
WARNING
Power supply to the unit must be N.E.C. Class 1, and must
comply with all applicable codes. A fused disconnect switch
should be field provided for the unit. The switch must be
separate from all other circuits.
If any of the wire supplied with the unit must be replaced,
replacement wire must be of the type shown on the wiring
diagram. Electrical wiring must be sized to carry minimum
circuit ampacity marked on the unit.
Use copper conduc-
tors only.
Each unit must be wired with a separate branch
circuit and be properly fused.
Figure 6
Typical Wiring Connections
R
R
C
C
C
C
R
R
L2
L1
Y
Y
Y1
Y
L1
L2
L3
POWER WIRING
208/230-1-60
(90°C MIN. WIRE)
POWER WIRING
24V CONTROL WIRING
(NEC CLASS 2)
TYPICAL WIRING CONNECTION
1 PHASE
GROUND
SCREW
THERMOSTAT
OUTDOOR UNIT
THERMOSTAT
OUTDOOR UNIT
GROUND
SCREW
POWER WIRING
200/230-3-60, 460/575-3-60
(90°C MIN. WIRE)
24V CONTROL WIRING
(NEC CLASS 2)
POWER WIRING
TYPICAL WIRING CONNECTION
3 PHASE
* W1, W2 CAN BE USED TO STAGE ELECTRIC
HEAT ACCESSORY ON
MODELS.
15 & 20 KW
* 5 & 10 KW HEATER ACCESSORY FUNCTION
W1 ONLY.
OFF
* W1, W2 CAN BE USED TO STAGE ELECTRIC
HEAT ACCESSORY ON 15 & 20 KW MODELS.
* 10 KW HEATER ACCESSORY FUNCTION OFF
W1 ONLY.
ECONOMIZER
NOT
INSTALLED
ECONOMIZER
W1
W
W
W1
G
G
G
G
W2
Y2
W2
BLUE
WHITE
YELLOW
GREEN
BLACK
Do not connect connections except when
required by the indoor thermostat. Refer to the
thermostat installation instructions.
C
CAUTION
Do not connect connections except when
required by the indoor thermostat. Refer to the
thermostat installation instructions.
C
CAUTION
Thermostat
The room thermostat should be located on an inside wall
where it will not be subject to drafts, sun exposure, or heat
from electrical fixtures or appliances. Follow the
