Johnson Controls 340968-XIM-A-0108 Service Access, Thermostat, Power and Control Wiring

						340968-XIM-A-0108
SERVICE ACCESS				nances. The unit must be electrically grounded in accordance
Access to all serviceable components is provided by the fol-				with local codes or, in their absence, with the N.E.C./C.E.C.
				Voltage tolerances which must be maintained at the com-
lowing removable panels:				pressor terminals during starting and running conditions are
• Blower compartment				indicated on the unit Rating Plate and Table 8.
• Gas control/electrical service access				The wiring entering the cabinet must be provided with
Refer to Figure 7 for location of these access panels and min-				mechanical strain relief.
imum clearances.				A fused disconnect switch should be field provided for the
THERMOSTAT				unit. If any of the wire supplied with the unit must be replaced,
				replacement wire must be of the type shown on the wiring
The room thermostat should be located on an inside wall				diagram.
approximately 56" above the floor where it will not be subject				Electrical line must be sized properly to carry the load. Each
to drafts, sun exposure or heat from electrical fixtures or
appliances. Follow manufacturer's instructions enclosed with				unit must be wired with a separate branch circuit fed directly
the thermostat for general installation procedure. Four color				from the meter panel and properly fused.
coded insulated wires (minimum #18 AWG) should be used				Refer to Figure 4 for typical field wiring and to the appropriate
to connect thermostat to unit. See Figure 3.
				unit wiring diagram for control circuit and power wiring infor-
					HEAT
POWER AND CONTROL WIRING				mation.	SHOULDANTICIPATORBESET		0.35
**=Minimumwiresizeof18AWGTHERMOSTAT			UNIT**	TERMINALSTRIP	AMPSFORALLMODELS.
Field wiring to the unit must conform to provisions of the cur-					NOTE:
rent N.E.C. ANSI/NFPA No. 70 or C.E.C. and/or local ordi-
	wireshouldbeusedforall
GY			GY		24VOLT
		fieldinstalled24voltwire.
	PROGRAMMABLE	WC		WC		TRANSFORMER
	THERMOSTATONLY

FIGURE 3 - TYPICAL FIELD CONTROL WIRING DIAGRAM

COMPRESSORS

Units are shipped with compressor mounting factory-adjusted for shipping.

REFER TO ELECTRICAL

DATA TABLES TO SIZE

THE DISCONNECT

FIGURE 4 - TYPICAL FIELD POWER WIRING DIAGRAM

Loosen compressor mounting bolts a half turn before operating unit.

6 Johnson Controls Unitary Products