Typical Field Wiring (Air Handler / Electrical Heat) (Single-Phase); Typical Field Wiring (Air Handler / Electrical Heat) (Three-Phase) - York 13 Seer-TCG Installation Manual

835964-UIM-A-0112
FIELD CONNECTIONS CONTROL WIRING
1. Route low voltage wiring into bottom of control box as shown in
Figure 6. Make low voltage wiring connections inside the low volt-
age box per Figures 7 - 11.
2. The complete connection diagram and schematic wiring label is
located on the inside surface of the unit service access panel.
3. Replace the corner cover removed in Step 2.
4. All field wiring to be in accordance with national electrical codes
(NEC) and/or local-city codes.
NOTE: A Start Assist Kit is available and recommended for long line set
applications or in areas of known low voltage problems.
ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE (NEC) AND/OR LOCAL CODES
POWER WIRING
CONTACTOR
TERMINALS
GND.
COIL
LUG
CONDENSING UNIT
ALL OUTDOOR WIRING MUST BE WEATHERPROOF. USE COPPER CONDUCTORS ONLY.
FIGURE 8: Typical Field Wiring (Air Handler / Electrical Heat) (Single-Phase)
ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE (NEC) AND/OR LOCAL CODES
POWER WIRING
CONTACTOR
TERMINALS
GND.
LUG
CONDENSING UNIT
ALL OUTDOOR WIRING MUST BE WEATHERPROOF. USE COPPER CONDUCTORS ONLY.
FIGURE 9: Typical Field Wiring (Air Handler / Electrical Heat) (Three-Phase)
8
24 VOLT CONTROL WIRING
MINIMUM 18 GA. WIRE
(NEC CLASS 2)
*
TERMINAL W IS ONLY
REQUIRED ON SYSTEMS
WITH HEAT.
24 VOLT CONTROL WIRING
MINIMUM 18 GA. WIRE
(NEC CLASS 2)
*
TERMINAL W IS ONLY
REQUIRED ON SYSTEMS
WITH HEAT.
COIL
5. Mount the thermostat about 5 ft. above the floor, where it will be
exposed to normal room air circulation. Do not place it on an out-
side wall or where it is exposed to the radiant effect from exposed
glass or appliances, drafts from outside doors or supply air grilles.
6. Route the 24-volt control wiring (NEC Class 2) from the outdoor
unit to the indoor unit and thermostat.
To eliminate erratic operation, seal the hole in the wall at the ther-
mostat with permagum or equivalent to prevent air drafts affecting
the operation of in the thermostat.
FURNACE OR AIR HANDLER TERMINAL BLOCK
C Y R
Y R
ROOM THERMOSTAT
FURNACE OR AIR HANDLER TERMINAL BLOCK
C Y
Y
ROOM THERMOSTAT
POWER WIRING
CONTROL WIRING
FACTORY WIRING
G W
*
G W
POWER WIRING
CONTROL WIRING
FACTORY WIRING
R G W
*
R G W
Johnson Controls Unitary Products