Troubleshooting - Honeywell D896 Product Data

Automatic vent damper

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Installation instructions manual (16 pages)

Table of Contents

D896 AUTOMATIC VENT DAMPER

Fig. 10. Snap-Tite™ Box Connector release.

Checkout

Heating

1. Turn on the power supply.

2. If using a thermostat, set the heat anticipator at 0.13A.

3. Set the thermostat or controller to 10°F (6°C) above the

room temperature to call for heat.

4. Check that the D896 CALL FOR HEAT and IGNITION

GAS PWR LEDs light and that the damper opens

before the gas valve opens and the pilot or main burner

ignites. See Fig. 11.

NOTE: If a boiler gas control is sequenced by the

Aquastat® Controller, make sure that the

damper opens prior to the opening of the gas

control.

5. Turn the thermostat or controller 10°F (6°C) below the

room temperature. Make sure the LEDs turn off and the

D896 closes.

M3431

68-0186

THE AIR DUCT IS CLOSED WHEN THE

INDICATOR POINTS PERPENDICULAR TO

THE DIRECTION OF THE AIR DUCT

Fig. 11. Determining damper position.

6. Cycle the heating system at least three times using the

thermostat or controller to assure the system is

operating safely.

Cooling

CAUTION

Damage to air conditioner condenser possible.

Do not operate cooling if outdoor temperature is below

50°F (10°C).

1. Set the thermostat or controller to COOL. Move the

setpoint to 10°F (6°C) below the room temperature.

2. Make sure the cooling system operates.

3. Check that the D896 is in the closed position. See Fig.

11.

4. Return the thermostat or controller to the desired

settings.

NOTE TO INSTALLER: Explain to the homeowner that a

yearly inspection by a trained, experienced service

technician is necessary for safe, efficient operation

of the vent damper and heating system. The

homeowner should check for deterioration from

corrosion or other sources between service

technician calls.