Installation Sheet

TRUEZONE ARD, EARD, AND ZD SERIES DAMPERS

33-00040—03 4

WIRING

CAUTION

Personal Electrical Shock Hazard. Can cause

electrical shock or equipment damage.

Disconnect power before beginning installation.

The damper motor has a 24 Vac, 50/60 cycle, 8 VA rating.

The spring-return ARD and ZD damper requires 24 Vac to

M1 and M6 to power the damper closed. The damper then

returns to its normal open position once power is removed.

EARD damper requires 24 Vac to the two vent terminals to

power the damper open. The damper then returns to its

normal closed position once power is removed.

NOTE: Multiple dampers can be wired in parallel.

Wiring a Motor

See Fig. 6 for motor wiring hookups for ARD and ZD

Dampers.

Changing Motor on ARD, EARD and

ZD Dampers

1. Disconnect the motor wiring.

2. Loosen the socket head cap set screw located

between the faceplate and the motor coupling.

3. Remove the motor.

4. For ARD and ZD models: Ensure damper blade is in

the open position.

For EARD models: Ensure damper blade is in the

closed position.

5. Attach new motor to the coupling; be sure the

standoff on motor is positioned in the grommet on

the faceplate and the set screw is aligned with the

motor shaft hole.

6. Tighten the set screw.

Wiring an EARD to a W8150

Fig. 3. EARD and W8150 wiring.

WCR

RYG

AT120

W8150A

EARD-6

HVAC

WCRC Y G

THERMOSTAT

DAMPER

AUX

REMOTE

M23547A