Trane GEH, GEV manual Installation Air Flow Adjustment

Installation

Air Flow Adjustment

Blower Motor Speed-Tap Retrofit (for 1/2 Through 5 Ton Units ONLY)

Motors installed in the unit include 4-speed and 3-speed configurations. All voltages include a 4-speed configuration, with the exception of 380V, 415V, 460V which contain a 3-speed arrangement and 575V which contains a 2-speed arrangement. To modify the rpm of the motor, the following steps may be followed.

WARNING

Hazardous Voltage!

Disconnect all electric power, in- cluding remote disconnects before servicing. Follow proper lockout/ tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury.

Step 1

Step 4:

For units w/o Hot Gas Reheat

Remove undesired speed-tap wire from 1K4 relay at spade 3. Wire tie the lead, to eliminate a short.

For units with Hot Gas Reheat

Remove undesired speed-tap wire from 1K8 relay at spade 6. Wire tie the lead, to eliminate a short.

4-Speed Motor (115, 208, 230, 265)

		Lead Colors
Lead	Black		Blue	Orange	Red
			Medium	Medium
Speed	High				Low
			High	Low

Step 2

Remove service access panel at the unit front.

Step 5:

For units w/o Hot Gas Reheat Select desired speed-tap wire.

Connect desired speed tap wire to 1K4 relay at spade 3.

For units with Hot Gas Reheat Select desired speed-tap wire.

Connect desired speed tap wire to 1K8 relay at spade 6.

3-Speed Motor (380, 415, 460)

	Lead Colors
Lead Speed	Black	Blue	Orange
	High	Medium	Low

Step 3

Find the blower motor relay. The relay is highlighted above. The relay location is consistent in all control configurations.

Step 6:

Install service front panel.

Reconnect power to the unit.

2-Speed Motor (575)

	Lead Colors
Lead		Black	Blue
Speed		High	Low

Note: When using the medium or low speed tap, the purple wire must be jumpered to the high speed tap (blk).

5 8 WSHP-SVX01D-EN