York ZR240 Specifications download pdf (Page 15)

275864-YIM-C-0910

Johnson Controls Unitary Products 15

Figure 11: Field Wiring Disconnect - Cooling Unit With/Without Electric Heat

Thermostat Wiring

The thermostat should be located on an inside wall approximately

56 inch above the floor where it will not be subject to drafts, sun

exposure or heat from electrical fixtures or appliances. Follow the

manufacturer's instructions enclosed with thermostat for general

installation procedure. Seven (7) color-coded, insulated wires

should be used to connect the thermostat to the unit. Refer to

Table 7 for control wire sizing and maximum length.

Space Sensor

The space sensor, if used, should be located on an inside wall

approximately 56 inches above the floor where it will not be

subject to drafts, sun exposure or heat from electrical fixtures or

appliances. Follow manufacturer's instructions enclosed with

sensor for general installation procedure.

THREE

PHASE

POWER

SUPPLY

FACTORY OR FIELD

SUPPLIED DISCONNECT

GROUND

LUG

TERMINAL BLOCK TB1

Table 7: Control Wire Sizes

Wire Size Maximum Length

1. From the unit to the thermostat and back to the unit.

18 AWG 150 Feet

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 60 61

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York ZR240 Specifications Page 15