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PF4MNA: Installation Instructions
HEATER STAGING
CAUTION
!
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in product or property damage.
If W2, W3, and E on any 3 stage heater (18, 20, 24, or 30kW), are
individually connected as with outdoor thermostats or any other
situation, emergency heat relay must be used. This relay is in kit Part
No. KHAOT0201SEC and is normally used with kit Part No.
KHAOT0301FST for 2 outdoor thermostat system.
The controls are factory circuited for single-stage operation. For 2-stage
operation, use outdoor thermostat kit Part No. KHAOT0301FST, and for
3-stage use both kits Part No. KHAOT0201SEC and KHAOT0301FST.
When 2 stages are desired, cut W3 at the W2 wire nut, strip and
reconnect per the thermostat kit instruction.
When 3 stages are desired, cut the W2 wire nut off and discard. Strip
W2, W3, and E and reconnect per thermostat kit instructions
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
NOTE: When 3 stages are used or any time the E terminal is not tied to
W2, the emergency heat relay, part of outdoor kit Part No.
KHAOT0201SEC, must be used.
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
with outdoor thermostat.
THERMOSTAT
RED
R
GRY
G
W
WHT
Y
Fig. 10 – Wiring Layout Air Conditioning Unit
(Cooling Only)
THERMOSTAT
RED
R
GRY
G
W
WHT
Y
Fig. 11 – Wiring Layout Air Conditioning Unit
(Cooling and 1-Stage Heat)
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
(Fig.
13)
(Fig.
(Fig.
16).
Fig. 15
for typical low voltage wiring
FAN COIL
(CONTROL)
R
G
WHT
W
2
BLU
W
3
VIO
E
BRN
AIR COND.
C
C
Y
FAN COIL
(CONTROL)
R
G
WHT
W
2
BLU
W
3
VIO
E
BRN
AIR COND.
C
C
Y
THERMOSTAT
R
G
C
W
2
E
L
O
Y
Fig. 12 – Wiring Layout Heat Pump Unit
(Cooling and 2-Stage Heat with No Outdoor Thermostat)
THERMOSTAT
R
14).
G
C
W
2
E
L
O
Y
Fig. 13 – Wiring Layout Heat Pump Unit
(Cooling and 2-Stage Heat with 1 Outdoor Thermostat)
THERMOSTAT
A94058
Fig. 14 – Wiring Layout Heat Pump Unit
(Cooling and 2-Stage Heat with 2 Outdoor Thermostats)
THERMOSTAT
R
G
C
W
2
E
L
O
Y
Fig. 15 – Wiring Layout Heat Pump Unit
A94059
(Cooling and 2-Stage Heat for Manufactured Housing)
6
FAN COIL
HEAT PUMP
(CONTROL)
(CONTROL)
RED
R
R
GRY
G
BRN
C
C
WHT
W
2
BLU
W
3
VIO
E
W
O
Y
FAN COIL
HEAT PUMP
(CONTROL)
(CONTROL)
RED
R
R
GRY
G
BRN
C
C
WHT
W
2
VIO
E
W
BLU
ODTS
W
3
O
Y
FAN COIL
HEAT PUMP
(CONTROL)
(CONTROL)
RED
R
R
R
GRY
G
G
BRN
C
C
C
WHT
W
W
2
2
W
2
BLU
ODTS1
L
W
3
VIO
E
E
ODTS2
O
O
Y
Y
C
1
4
7
C
9
6
3
EMERGENCY HEAT RELAY
FAN COIL
(CONTROL)
R
G
C
W
2
W
3
E
ODTS
2
A94060
A94060
2
A94061
A94062
HEAT PUMP
(CONTROL)
R
C
W
2
O
Y
A03088
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