HEIL FXM4X Installation Instructions Manual page 9

INSTALLATION INSTRUCTIONS
Wiring Layout − Air Conditioning
Figure 10
Unit (Cooling and 1−Stage Heat)
THERMOSTAT
RED
R
GRY
G
WHT
W
WHT
BLU
VIO
BRN
Y
Wiring Layout − Heat Pump Unit
Figure 11 (Cooling and 2−Stage Heat with No
THERMOSTAT
RED
R
GRY
G
BRN
C
WHT
W
2
BLU
E
VIO
L
O
Y
Wiring Layout − Heat Pump Unit
Figure 12 (Cooling and 2−Stage Heat for
Manufactured Housing)
FAN COIL
THERMOSTAT
(CONTROL)
R
G
C
W
2
E
L
O
Y
Transformer Information
Transformer is factory wired for 230V operation. For 208V
applications, disconnect the black wire from the 230V terminal
on transformer and connect it to the 208V terminal (refer to
Figure 13).
496 01 5503 02
FAN COIL
(CONTROL)
R
G
W
2
W
3
E
AIR COND.
C
C
Y
Outdoor Thermostat)
FAN COIL
HEAT PUMP
(CONTROL)
(CONTROL)
R
R
G
C
C
W
2
W
3
E
W
2
O
Y
HEAT PUMP
(CONTROL)
R
R
G
C
C
W
W
2 2
W
3
E
ODTS
O
Y
Specifications are subject to change without notice.
Fan Coils: FEM4X, FEM4P, REM4X, FXM4X
Figure 13 Transformer Connections
SECONDARY
C. GROUND CONNECTIONS
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to establish uninterrupted or unbroken ground
could result in personal injury and/or death.
According to NEC, ANSI/NFPA 70, and local codes, the
cabinet must have an uninterrupted or unbroken ground
in order to minimize potential for personal injury or death
if an electrical fault should occur. The ground may consist
of electrical wire or metal conduit when installed in
accordance with existing electrical codes. If conduit
connection uses reducing washers, a separate ground
wire must be used.
NOTE: Use UL listed conduit and conduit connectors for
connecting supply wire(s) to unit to obtain proper grounding.
Grounding may also be accomplished by using grounding lugs
provided in control box.
D. MINIMUM CFM AND MOTOR SPEED SELECTION
Units with or without electric heaters require a minimum CFM.
Refer to the unit wiring label to ensure that the fan speed
selected is not lower than the minimum fan speed indicated.
Fan speed selection is done at the fan motor. To change motor
speeds, reposition wire at fan motor speed terminals labeled
1−2−3 (see Figure 14). Units with or without electric heaters
require a minimum CFM. Refer to the unit wiring label to ensure
that the fan speed selected is not lower than the minimum fan
speed indicated.
SPEED TAP SELECTION AT MOTOR CONNECTOR
Tap 1
Tap 2
Tap 3
Tap 4 Electric Heat †
Tap 5
† Electric heat airflow is same CFM as Tap 3, but with 0
sec off delay.
‡ For high static applications, see Airflow Performance
Tables for max airflow.
BROWN
RED
YELLOW
BLACK
PRIMARY
Low 90 sec off delay
Medium 90 sec off delay
High 90 sec off delay
0 sec off delay
Max ‡ 0 sec off delay
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