Outdoor Unit Control Box; Typical Communicating Field Wiring (Air Handler / Furnace) - York YXV series Installation Manual

DO NOT connect the "R" terminal of unit control board.
MAIN
CONTROL
BOARD
OUTDOOR
DISPLAY
ACCESS PANEL
SWITCH
OUTDOOR
REACTOR/CHOKE
OUTDOOR FILTER
CONTROLLER
(May not be used
on all units)
LOW VOLTAGE
FIELD WIRING BOX
AMBIENT
TEMPERATURE
SENSOR
FIGURE 6: Outdoor Unit Control Box
FIGURE 7: Typical Communicating Field Wiring (Air Handler / Furnace)
Johnson Controls Unitary Products
TRANSFORMER
INVERTER
DRIVE
TERMINAL
BLOCK
GROUND LUG
FIELD WIRING
HIGH VOLTAGE
CONDUIT PLATE
HIGH VOLTAGE
FIELD WIRING
A0770-001
FIELD CONNECTIONS CONTROL WIRING
1. Route low voltage wiring into bottom of control box. Connect low
voltage wiring inside the low voltage box. See Figure 6.
2. The complete connection diagram and schematic wiring label is
located on the inside surface of the unit service access panel.
3. Replace the control box cover removed in Step 2 of the FIELD
CONNECTIONS POWER WIRING procedures.
4. All field wiring to be in accordance with national electrical codes
(NEC) and/or local-city codes.
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 outside
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.
NOTICE
To eliminate erratic operation, seal the hole in the wall at the thermo-
stat with permagum or equivalent to prevent air drafts affecting the
operation of in the thermostat.
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