Carrier FX4D Series Installation Instructions Manual page 6

FX4D: Installation Instructions
THERMOSTAT
RED
R
GRY
G
W
WHT
Y
Fig. 9 – Wiring Layout Air Conditioning Unit
(Cooling Only)
THERMOSTAT
RED
R
GRY
G
W
WHT
Y
Fig. 10 – Wiring Layout Air Conditioning Unit
(Cooling and 1-Stage Heat)
THERMOSTAT
R
G
C
W
2
E
L
O
Y
Fig. 11 – Wiring Layout Heat Pump Unit
(Cooling and 2-Stage Heat with No Outdoor Thermostat)
THERMOSTAT
R
G
C
W
2
E
L
O
Y
Fig. 12 – Wiring Layout Heat Pump Unit
(Cooling and 2-Stage Heat with 1 Outdoor Thermostat)
HEATER STAGING
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.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
FAN COIL
R
G
WHT
W
2
BLU
W
3
VIO
E
BRN
AIR COND.
C
C
Y
FAN COIL
R
G
WHT
W
2
BLU
W
3
VIO
E
BRN
AIR COND.
C
C
Y
FAN COIL
HEAT PUMP
(CONTROL)
RED
R
R
GRY
G
BRN
C
C
WHT
W
2
BLU
W
3
VIO
E
W
2
O
Y
FAN COIL HEAT PUMP
(CONTROL)
RED
R
R
GRY
G
BRN
C
C
WHT
W
2
VIO
E
W
2
BLU
ODTS
W
3
O
Y
When 2 stages are desired, cut W3 at the W2 wire nut, strip and
reconnect per the thermostat kit instruction. (See Fig. 13.) When 3 stages
are desired, cut the W2 wire nut off and discard. Strip W2, W3, and E
and reconnect per thermostat kit instructions. (See Fig. 13.)
NOTE: When 3 stages are used or anytime the E terminal is not tied to
W2, the emergency heat relay, part of outdoor kit Part No.
KHAOT0201SEC must be used.
THERMOSTAT
A09383
Fig. 13 – Wiring Layout Heat Pump Unit
(Cooling and 2-Stage Heat with 2 Outdoor Thermostats)
THERMOSTAT
A09384
R
G
C
W
2
E
L
O
Y
Fig. 14 – Wiring Layout Heat Pump Unit
(Cooling and 2-Stage Heat for Manufactured Housing)
A09385
Fig. 15 – Transformer Connections
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
A09386
individually connected - as with outdoor thermostats or any other
situation - emergency heat relay must be used. This relay is in kit Part
No. KHOT0201SEC and is used normally with kit Part No.
KHAOT0301FST.
6
FAN COIL
HEAT PUMP
(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
R
G
C
W
2
W
3
E
ODTS
SECONDARY
BRN
RED
YEL
BLK
PRIMARY
CAUTION
!
A09387
HEAT PUMP
(CONTROL)
R
C
W
2
O
Y
A09388
A05182