Nordyne E3 Blower Installation, Selecting Blower Speed, Circuit Breaker Bracket, Adaptor Kit

6.Connect service ground wire(s) to grounding lug(s) provided. One ground is required for each supply circuit used.

WARNING:

To avoid personal injury or property damage, make certain that the motor leads cannot come into contact with non-insulated metal components of the unit.

Blower Installation:

1.Turn off all electrical supply circuits to the furnace at the main service panel.

2.Remove furnace front door and switch furnace circuit breaker(s) to “OFF”.

3.Disconnect the motor plug from the control panel receptacle.

4.Remove one screw from left side of blower and three screws from right side of blower; slide blower forward and remove.

5.Install new blower ensuring the side fl anges engage under side mounting tabs (three on one side, one on the other) and the long tab in the rear.

6.Replace screws previously removed from blower.

7.Connect the motor plug to the control panel receptacle.

8.Switch circuit breaker(s) to “ON”, reinstall furnace front door, and turn on electrical supply circuits to the furnace.

Selecting Blower Speed

See Table 5 for the lowest speed approved for the heating output of the unit. Since the blower leads connect to the control box, blower speed selection is accomplished through use of the proper color-coded blower lead located inside the control box. The speed(s) set by the factory may be different from that shown on the wiring diagrams. See the unit control box for blower speed(s) set at factory.

Circuit

Breaker

Wire

Assemblies

(Factory

Installed)

Circuit Breaker

Bracket

OFF	60A	ON
OFF	60A	ON

Optional

Single Circuit

Adaptor Kit

Supply Service

Wire Connection

With Single Circuit

Adaptor Kit

Figure 20. Installation of Optional Single Circuit Adaptor Kit

Circuit

Breaker

Wire

Assemblies

(Factory

Installed)

Circuit Breaker

Bracket

OFF	60A	ON
OFF	60A	ON

Supply Service Wire Connection

Without Single

Circuit Adaptor Kit

Figure 21. Installation of Supply Service Wires

19