Millennium Enterprises STYLE C, Y13 Power & Control Wiring Location, Typical Thermostat Wiring

530.70-N1.11Y

TABLE 3: PARTS SUPPLIED FOR CV UNITS WITH OPTIONAL HEAT

QTY	PART NO.	DESCRIPTION
1	373-18689-610	820/Y
		823/Y
1	373-18689-611	822/BR
		826/BR
1	AB144GRA7171844	844/GY
1	AB144WHT7171845	845/W
2	024-24116-000	Isolation Relay

FIGURE 1: POWER & CONTROL WIRING LOCATION

FIGURE 2 : EXISTING CONTROL PANEL COMPO- NET LOCATION

FIGURE 3 : TYPICAL THERMOSTAT WIRING

OPEN ALL DISCONNECTS BEFORE SERVIC- ING THIS UNIT.

The new thermostat requires a thermostat cable with a mini- mum of 10 conductors that run from the sub-base to the con- trol box. The new wire will be connected as shown in Figure 3.

1.Locate the W7400 control module in the box-electric (Figures 1 and 2).

2.Remove the following wires form the W7400 control module and from the unit.

•201/R

•208/BR

•254/GY

•252/Y

•257/Y

•248/GY

•240/Y

•244/0

•246/PR

NOTE: Wire ties will need to be removed to remove above wires.

3.Disconnect wire 204/BR from the TR terminals on the w7400 control module.

NOTE: These wires will be used with the new controls.

4.Disconnect thermostat wire from terminals 1-4 on the W7400 control module.

NOTE: This wire will be used with the new controls.

NOTE: STEPS 5 THROUGH 7 ARE FOR OPTIONAL HEAT ONLY.

Unitary Products Group 3