York E4FD024 - Installation and Wiring Diagrams; 1-Phase Field Wiring; 3-Phase Field Wiring

036-21030-003 Rev. B (0203)
Unitary Products Group 9
TYPICAL INSTALLATION
TYPICAL FIELD WIRING - 1 Phase (Air Handler / Electrical Heat)
TYPICAL FIELD WIRING - 3 Phase (Air Handler / Electrical Heat)
THERMOSTAT
TO
INDOOR
BLOWER
TO COIL
NEC
CLASS 2
WIRING
NEC
CLASS 1
WIRING
TO
POWER
SUPPLY
WEATHERPROOF
DISCONNECT
SWITCH
Seal opening(s) with permagum
or equivalent
24” SERVICE ACCESS
CLEARANCE
48” OVERHEAD
CLEARANCE
12” REAR AND
SIDES
NOTE: All outdoor wiring must be weatherproof
THERMOSTAT
ALL WIRING TO BE ACCORDANCE WITH NATIONAL CODE AND/OR LOCAL CODES.
INDOOR UNIT
OUTDOOR
UNIT
POWER WIRING
208/230-1-60
CONTACTOR
GND.
SCREW
T2
T1
L2
L1
M
CIRCUIT
BREAKER
4
POWER WIRING
24V CONTROL WIRING
(NEC CLASS 2)
GND.
LUG
LOW VOLTAGE TERMINAL BLOCK
IN AIR HANDLER WITH ELECTRIC HEAT
3,4
2
TERMINAL NOT USED ON ALL THERMOSTATS.
3
CHECK THE LOW VOLTAGE TERMINAL BLOCK
ON THE INDOOR UNIT FOR THE ACTUAL
ARRANGEMENT OF THE TERMINALS.
4
CONNECT POWER WIRING TO TERMINAL
BLOCK 3TB ON UNITS WITHOUT ELECTRIC
HEAT OR CIRCUIT BREAKER.
DEHUMIDIFICATION CONTROL
CONNECTION (”Humidistat” Jumper
must be removed).
7 WIRES
R
Y
O
W
G
R
C
Y
O
G
R
C
Y
O
W
X
W2
W1
BK
W1
BorC
LorX
M
T1
L1
L2
T2
T3
L3
INDOOR UNIT
OUTDOOR UNIT
CONTACTOR
GND.
LUG
POWER WIRING
POWER WIRING
208/230-3-60
460-3-60
GND.
SCREW
POWER
SUPPLY
208/230-3-60
460-3-60