PF4MNB, PF4MNP: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
6
Line Voltage Connections
If unit contains an accessory electric heater, remove and discard power
plug from fan coil and connect male plug from heater to female plug
from unit wiring harness. (See Electric Heater Installation Instructions.)
For units without electric heat:
1. Connect 208/230V power leads from field disconnect to yellow and
black stripped leads.
2. Connect ground wire to unit ground lug.
NOTE: Units installed without electric heat should have a field-supplied
sheet metal block-off plate covering the heater opening. This will reduce
air leakage and formation of exterior condensation.
24V Control System
Connection To Unit
Wire low voltage in accordance with wiring label on the blower (Fig. 9
thru Fig. 12). Use no. 18 AWG color-coded, insulated (35°C minimum)
wire to make the low-voltage connections between the thermostat, the
unit, and the outdoor equipment. If the thermostat is located more than
100-ft (30 m) from the unit (as measured along the low-voltage wire),
use no. 16 AWG color-coded, insulated (35°C minimum) wire. All
wiring must be NEC Class 2 and must be separated from incoming
power leads.
Refer to outdoor unit wiring instructions for any additional wiring
procedure recommendations.
A94058
Fig. 9 – Wiring Layout Air Conditioning Unit
(Cooling Only)
A94059
Fig. 10 – Wiring Layout Air Conditioning Unit
(Cooling and 1-Stage Heat)
A94060
Fig. 11 – Wiring Layout Heat Pump Unit
(Cooling and 2-Stage Heat with No Outdoor Thermostat)
A03088
Fig. 12 – Wiring Layout Heat Pump Unit
(Cooling and 2-Stage Heat for Manufactured Housing)
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 (Fig. 13).
A05182
Fig. 13 – Transformer Connections
Heater Staging
If electric heat staging is required, a multi-stage heating room thermostat
is required. Consult your equipment supplier for a suitable thermostat.
Manufactured Housing
In manufactured housing applications, the Code of Federal Regulations,
Title 24, Chapter XX, Part 3280.714 requires that supplemental electric
heat be locked out at outdoor temperatures above 40°F (4°C), except for
a heat pump defrost cycle. Refer to Fig. 12 for typical low voltage wiring
with outdoor thermostat.
R
G
W
Y
THERMOSTAT
RED
GRY
WHT
BLU
VIO
BRN
WHT
R
G
W
2
W
3
E
C
FAN COIL
(CONTROL)
C
Y
AIR COND.
R
G
W
Y
THERMOSTAT
R
G
W
2
W
3
E
C
FAN COIL
(CONTROL)
C
Y
AIR COND.
RED
GRY
WHT
WHT
BLU
VIO
BRN
R
G
C
E
L
O
Y
THERMOSTAT
R
R
C
O
Y
G
C
W
2
W
2
W
2
W
3
E
FAN COIL
(CONTROL)
HEAT PUMP
(CONTROL)
RED
GRY
BRN
WHT
BLU
VIO
R
E
W2
R
C
THERMOSTAT
FAN COIL
(CONTROL)
HEAT PUMP
(CONTROL)
G
C
W2
E
L
G
C
R
O
Y
ODTS
O
Y
W3
W2
230
C
208
BRN
RED
YEL
BLK
SECONDARY
PRIMARY
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