Assessments - 5, GPA: 4.2
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See Fig. 9. a. Remove the black wire from the D80B (or D892) terminal 1. b. Use a wire nut to connect the D80B (or D892) black wire to the D896 blue wire. c. Remove the orange wire from the D80B (or D892) terminal 2. d. Wire nut the D80B (or D892) orange wire to the D896 yellow wire. e. Remove the red wire from the D80B (or D892) terminal 3 and the blue wire from the D80B (or D892) terminal 5. f. Wire nut the D80B (or D892) red and blue wires to the D896 orange wire. g. Remove the yellow wire from the D80B (or D892) terminal 4. h. Wire nut the D80B (or D892) yellow wire to the D896 black wire. 2. Cycle the system through at least two appliance operations. Snap-Tite™ Connector Release To release the D896 cable from the knockout hole when secured with a Snap-Tite™ Box Connector (Fig.10), slip a screwdriver under the tab and twist. SETTINGS The service switch operates in both normal (NORM ) or service (SERV) modes. See Fig. 5. NORM—D896 opens on a call for heat and closes at the end of the heating cycle. SERV—D896 remains open at the end of a call for heat. The switch must be in the SERVICE position before manually opening the damper. OPERATION AND CHECKOUT Operation On a call for heat, the CALL FOR HEAT LED on the actuator lights and the damper begins to open. When the damper is fully open, the IGNITION GAS PWR LED lights and the furnace or boiler burner lights. When the heating cycle ends, both LEDs turn off, the burner turns off and the damper automatically closes. Heating system efficiency is increased because the closed damper reduces the loss of residual appliance heat and heated room air through the draft diverter. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. CONNECT COLORS OF WIRING HARNESS AS SHOWN. ALTERNATE LIMIT CONTROLLER HOOKUP. 2 3 M11372 WIRING HARNESS YELLOWBLUEBLACKORANGE THERMOSTAT LIMIT CONTROLLER L1 (HOT) L2 LIMIT CONTROLLER 1 D896 1 TH TH 2 DUAL AUTOMATIC VALVE COMBINATION GAS CONTROL TRANSFORMER 2 1 3 1234 M11383 YELLOW BLACK ORANGE BLUE RED YELLOW ORANGE BLUED80B CONNECTOR D80B CABLE D892/D896 CABLE BLACK Fig. 8. Wiring diagram for D896 connection to continuous pilot system using wiring harness with one Molex plug. Fig. 9. Connecting D80B, D892 Cable to D896 Cable. 7 68-0186 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. 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. TROUBLESHOOTING WARNING Fire or explosion hazard can cause property damage, severe injury or death. Explosion or carbon monoxide poisoning possible. Never apply a jumper across or short gas control terminals or wires because this can force the D896 to remain closed and cause an explosion. THE AIR DUCT IS CLOSED WHEN THE INDICATOR POINTS PERPENDICULAR TO THE DIRECTION OF THE AIR DUCT THE AIR DUCT IS OPEN WHEN THE INDICATOR POINTS IN THE DIRECTION OF THE AIR DUCT M3431 Fig. 11. Determining damper position. 68-0186 8 D896 AUTOMATIC VENT DAMPER NOTE: If there is a power failure, the damper remains exactly where it is at the moment of failure (open, closed or any position in between). When power is restored, the damper opens if the thermostat is calling for heat or closes if the thermostat is not calling for heat. If system fails to start, set the thermostat 10°F (6°C) below the room temperature for approximately three minutes, and refer to Table 2 to troubleshoot the system. INSTRUCTIONS TO THE HOMEOWNER A yearly inspection by a trained, experienced service technician is necessary for safe, efficient operation of the vent damper and all flue product-carrying areas of ...
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