Trane VAV-SVN01E-EN, Trane Wiring Diagrams, Fan-PoweredUnits with ECM, in the fan control box

Wiring Diagrams

Figure 24 – Fan-Powered Units with ECM

Fan-powered Control Box w/ ECM with Electronic or DDC Controls

(Depending on the size of the unit, the ECM board may or may not be located

in the fan control box.)

LINE VOLTAGE

OR FROM HEATER TERMINAL

Fan-powered Control Box w/ ECM with Pneumatic Controls

Duct Pressure Switch Option

}

FAN

4.

MOTOR

L1

N

BK

GR

GREEN

Y

GROUND

W

BK

NEUT.

24V

BK

W

SCREW

RED

RED

TERMINAL

BLOCK

DISCONNECT

2

4

SWITCH

2.

W BK

G R

3.

W

ECM

FUSE

1

24V 3

BOARD

MOTOR

BK

3.

RELAY

Y

TO VAV

CONTROLLER

24V

BL

}

TRANSFORMER

	LINE VOLTAGE
OR FROM HEATER TERMINAL
4.	}
			GR
	BK	W	GREEN
			GROUND
			SCREW
			2.
	3.	DISCONNECT
		SWITCH		W
	FUSE
		BK
5.
NO BL			POWER
BL			FACTOR
		CORRECTION
C			CHOKE
NC
DUCT
PRESSURE				Y
SWITCH			24V	BL
		BK

FAN

MOTOR

BK

TERMINAL

BLOCK

BL

Y

NEUT.24V

RED RED

ECM	W BK	G R
BOARD

POWER FACTOR

CORRECTION CHOKE

FAN CONTROL BOX

TRANSFORMER

FAN CONTROL BOX

WARNING

HAZARDOUS VOLTAGE!

DISCONNECT, LOCK OUT AND TAG ALL ELECTRIC POWER INCLUDING REMOTE DISCONNECTS BEFORE SERVICING.

DISCHARGE MOTOR START/RUN CAPACITORS BEFORE SERVICING.

FAILURE TO DISCONNECT POWER BEFORE SERVICING CAN CAUSE SEVERE PERSONAL INJURY OR DEATH.

CAUTION

Fan-powered Control Box with Pneumatic Controls

4.	LINE VOLTAGE	FAN
	OR FROM HEATER TERMINAL
		MOTOR
	}

USE COPPER CONDUCTORS ONLY!

UNIT TERMINALS ARE NOT DESIGNED

TO ACCEPT OTHER TYPES OF

CONDUCTORS.

FAILURE TO DO SO MAY CAUSE

DAMAGE TO THE EQUIPMENT.

DUCT PRESSURE MAIN CONTROL

5.

BK NO		NO
C	BK	C
NC		NC
P.E. SWITCH-1	P.E. SWITCH-2
	BK

NOTES:

1.	FACTORY INSTALLED
	BY OTHERS
	OPTIONAL OR ALTERNATE CIRCUITRY

		GR
BK	W	GREEN		BK
		GROUND
		SCREW
		TERMINAL
		DISCONNECT	BLOCK
		SWITCH
		2.
3.		W	BK
FUSE
		POWER FACTOR
		CORRECTION CHOKE
				Y
		BK	24V	BL
		TRANSFORMER
		NO
		C
		NC

BL

Y

NEUT.24V

RED RED

ECM	W BK	G R
BOARD

2.	DISCONNECT SWITCH, FUSE, & SCR ARE LOCATED
	EXTERNAL TO CONTROL BOX.
3.	FUSE IS OPTIONAL.
4.	DETERMINED BY MOTOR VOLTAGE ON ORDER.
	VOLTAGE FOUND ON UNIT NAMEPLATE.

P.E. SWITCH

FAN CONTROL BOX

5.FOR SERIES FAN POWERED TERMINAL UNITS ONLY.

52 VAV-SVN01E-EN