York THGD18 THRU 60 - System Accessories; Typical Installation Guidelines; Typical Field Wiring Connections

397763-YTG-B-0508
16 Johnson Controls Unitary Products
ACCESSORIES
Refer to Price Manual for specific model numbers.
Start Assist Kit (2SA067*) - May be required on 42, 48, 60
models. Models 18, 24, 30, 36 have been factory installed.
Blower Time Delay - Available to increase efficiency when
installed. Installs on indoor section and maintains blower for
approximately one minute after cooling thermostat has been
satisfied.
Hard Start Kits - Provides required starting torque for use
with Thermal Expansion Valve Kit.
Low Temperature Cutout (2LT06700224) - Prevents heat
pump operation below -10°F ambient temperature.
Compressor Blanket - Designed to further reduce the nor-
mal operating sound.
Add-on Fossil Fuel Control - Interface controls for use with
gas, oil furnaces and the heat pump system are available.
Thermal Expansion Valve Kit - 1TVM900 Series TXV kit
used to improve system performance.
Outdoor Thermostat (2TD06700124) - Provides additional
staging of supplemental electric heat.
Room Thermostats - A wide selection of matching thermo-
stats is available to provide features required for any installa-
tion.
2H/1C, manual changeover electronic non-programmable
thermostat.
3H/2C, non-programmable digital thermostat.
3H/2C, auto/manual changeover, electronic programmable,
7-day, hardwire thermostat.
* For the most current accessory information, refer to the
price book or consult factory.
SOUND POWER RATINGS
* Rated in accordance with ARI 270-95 Standards.
TYPICAL INSTALLATION
TYPICAL FIELD WIRING
UNIT MODEL
(dBA)*
Cooling Heating
018 TBD TBD
024 TBD TBD
030 TBD TBD
036 TBD TBD
042 TBD TBD
048 TBD TBD
060 TBD TBD
THERMOSTAT
SEAL OPENING(S) WITH
PERMAGUM OR EQUIVALENT
TO INDOOR COIL
TO FURNACE OR
AIR HANDLER
TERMINAL BLOCK
NEC CLASS 2 WIRING
NEC CLASS 1 WIRING
ALL OUTDOOR WIRING
MUST BE WEATHERPROOF.
CONTROL
ACCESS
PANEL
WEATHERPROOF
DISCONNECT
SWITCH
MINIMUM 24” SERVICE
ACCESS CLEARANCE
ON ONE SIDE
48” OVERHEAD
CLEARANCE
10” CLEARANCE
AROUND PERIMETER
NOTE:
THERMOSTAT
INDOOR UNIT
OUTDOOR UNIT
LOW VOLTAGE TERMINAL BLOCK
IN AIR HANDLER WITH ELECTRIC HEAT
DEFROST
CONTROL
FIELD
INSTALLED
JUMPER
DEHUMIDIFICATION CONTROL CONNECTION
(Humidistat* Jumper must be removed)
GND.
SCREW
CONTACTOR
T2
T1
L2
L1
M
R
LorX
Y
O
W
G
R
R
Y
Y
O
O
W2
W
W1
C
C
X/L
G
W1
BK
GND. LUG
CIRCUIT
BREAKER***
POWER WIRING
24V CONTROL WIRING
(NEC CLASS 2)
JUMPER TERMINALS E AND W TO HEAT
ON FIRST STAGE DURING EMERGENCY HEAT.
TERMINAL NOT USED ON ALL THERMOSTATS.
POWER WIRING
208/230-1-60
230-1-50
CHECK THE LOW VOLTAGE TERMINAL BLOCK ON THE INDOOR UNIT FOR THE ACTUAL ARRANGEMENT OF THE TERMINALS.
CONNECT POWER WIRING TO TERMINAL BLOCK 3TB ON UNITS WITHOUT ELECTRIC HEAT OR CIRCUIT BREAKER.
BorC
ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE (NEC) AND/OR LOCAL CODES
RED
BLK
YEL
ORG
WHT
PUR
BRN
CC
GRY
/66
GRAY FOR USE WITH OPTIONAL OUTDOOR THERMOSTAT KITS.
1
2
3
4
5
T
2
E
2
1
5
3,4