Typical Installation; Typical Field Wiring; Johnson Controls Unitary Products - York YHJD18 THRU 60 Technical Manual

TYPICAL INSTALLATION

10" CLEARANCE
AROUND PERIMETER
NOTE:
ALL OUTDOOR WIRING
MUST BE WEATHERPROOF.

TYPICAL FIELD WIRING

ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE (NEC) AND/OR LOCAL CODES
R
B or C
Y
O
W
L or X
G
2
T
2
E
1
JUMPER TERMINALS E AND W TO HEAT
ON FIRST STAGE DURING EMERGENCY HEAT.
2
TERMINAL NOT USED ON ALL THERMOSTATS.
POWER WIRING
24V CONTROL WIRING
(NEC CLASS 2)

Johnson Controls Unitary Products

48" OVERHEAD
CLEARANCE
THERMOSTAT
LOW VOLTAGE TERMINAL BLOCK
IN AIR HANDLER WITH ELECTRIC HEAT
R
C
Y
O
W2
G
1
FIELD
W1
INSTALLED
JUMPER BK
DEHUMIDIFICATION CONTROL CONNECTION
(Humidistat* Jumper must be removed)
GND.
LUG
CIRCUIT
BREAKER***
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.
5
GRAY FOR USE WITH OPTIONAL OUTDOOR THERMOSTAT KITS.
MINIMUM 24" SERVICE
ACCESS CLEARANCE
ON ONE SIDE
WEATHERPROOF
DISCONNECT
SWITCH
CONTROL
ACCESS
PANEL
INDOOR UNIT
3,4
RED
BLK
YEL
ORG
BRN
PUR
WHT
5
GRY
THERMOSTAT
NEC CLASS 1 WIRING
TO FURNACE OR
AIR HANDLER
TERMINAL BLOCK
NEC CLASS 2 WIRING
TO INDOOR COIL
SEAL OPENING(S) WITH
PERMAGUM OR EQUIVALENT
OUTDOOR UNIT
DEFROST
CONTROL
R
CONTACTOR
C
T2 T1
Y
M
O
L2 L1
W
SCREW
X/L
/66
W1
CC
POWER WIRING
208/230-1-60
230-1-50
GND.
19