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APPLICATION
The D896 Automatic Vent Damper is a 24 Vac, motorized
stack damper. The damper closes off the furnace or boiler
stack during the heating off-cycle. Use the D896 only on
Underwriters Laboratories Inc. listed and American Gas
Association design certified atmospheric type, gas-fired
furnaces and boilers. The furnaces or boilers must be
equipped with a draft hood that has an outlet area no
larger than the inlet area of the damper. Do n
an oil-fired furnace or boiler, power burner, or direct vent
furnace or boiler.
IMPORTANT
1.
The atmospheric draft hood outlet area must be
smaller or equal to the inlet area of the damper
assembly.
2.
If a second gas valve needs to be installed, refer
to the gas valve manufacturer instructions for
procedure.
3.
Dual automatic valve combination gas controls or
two separate single function main gas valves are
required with the D896.
4.
Do not use the D896 with the L8148 or L8124
with a manual/automatic switch because the
switch can override the safety interlock in the
system wiring, causing a hazardous condition.
5.
Do not install the D896 on an appliance with an
automatic valve with a manual opener unless the
manual opener is rendered inoperative or the
automatic valve is replaced with an automatic
valve without a manual opener.
6.
On retrofit applications, installation identification
label (provided) must be filled out by installer and
applied to outside of cover.
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 ignites. When the heating
cycle ends, both LEDs are truned 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.
Copyright © 1997 Honeywell Inc. • All Rights Reserved
Automatic Vent Damper
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow
2. Check the ratings given in the instructions and on
3. Installer must be a trained experienced service
ot
use with
IMPORTANT
4. The D896 must be installed only on an appliance
5. After installation is complete, check out product
X-XX UL
INSTALLATION INSTRUCTIONS
them could cause a hazardous condition.
the product to make sure the product is suitable for
your application.
technician. The D896 must be installed in compli-
ance with local codes or the Natural Gas Installation
Code CAN/CGA-B149.1-M91 and CSA C22.2 #3
Electrical Features of Fuel Burning Equipment, the
National Fuel Gas Code (ANSI Z223.1—NFPA 54)
and the National Electrical Codes (ANSI C1—
NFPA70). Use ANSI Standard Z21.66-1994
(included at the end of this document) during
installation.
In Canada, the damper is not certified for retrofit
application. Certification for the suitability of the
damper and appliance combination must be
determined by the Canadian Gas Association.
connected to a factory-built chimney or vent
complying with a recognized standard, or to a
masonry or concrete chimney lined with a lining
material acceptable to local code.
operation as provided in these instructions. See
Exhibits A and B at the end of these instructions.
CAUTION
Can cause electrical shock or
equipment damage.
1.
Disconnect power supply.
not
2.
Do
install within 6 in. (152 mm) of combus-
tible materials.
not
3.
Do
negate the action of any existing safety
or operational control.
D896
69-1088B
Table of Contents
Related Manuals for Honeywell D896
Summary of Contents for Honeywell D896
- Page 1 Automatic Vent Damper INSTALLATION INSTRUCTIONS APPLICATION INSTALLATION The D896 Automatic Vent Damper is a 24 Vac, motorized When Installing this Product… stack damper. The damper closes off the furnace or boiler 1. Read these instructions carefully. Failure to follow stack during the heating off-cycle. Use the D896 only on them could cause a hazardous condition.
- Page 2 The damper must be mounted as close as possible to the hood. See Fig. 1. Make sure the D896 motor actuator is draft hood without modifying the draft hood. The D896 can readily visible and accessible. The damper must be be mounted vertically or horizontally.
- Page 3 A wiring harness is included with most D896 models. Use 2. Secure the vent damper to the vent pipe with 1/2 in. the harness to wire the D896 according to the furnace or (12 mm) sheet metal screws. Use only the holes boiler manufacturer wiring instructions, if available.
- Page 4 SERVICE SWITCH. THE NORMAL SWITCH SETTING IS NORM. IF THE SWITCH IS MOVED TO THE SERV POSITION, THE DAMPER REMAINS OPEN. NO W,Z TERMINALS ON L7148. M11382 Fig. 5. Wiring diagram for D896 connection to L8148E1166 using wiring harness with two molex plugs. D896 S8600F, H, M; S8610F,H VENT...
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Page 5: Troubleshooting
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 CHECKOUT Fig. 8. 4. Return the thermostat or controller to the desired settings. -
Page 6: Ansi Standards
2. If 24 Vac is present, and the D896 is open, refer to calling for heat or closes if the thermostat is not the furnace or boiler manufacturer instructions. - Page 7 D896 AUTOMATIC VENT DAMPER EXHIBIT B Procedure for Installing Electrically Operated Automatic Vent Damper Devices on Existing Appliances This procedure is intended as a guide to aid in safely installing an electrically operated or mechanically actuated automatic vent damper device on an existing appliance.
- Page 8 D896 AUTOMATIC VENT DAMPER Home and Building Control Helping You Control Your World ® Home and Building Control Honeywell Inc. Honeywell Limited-Honeywell Limitée Honeywell Plaza 155 Gordon Baker Road P.O. Box 524 North York, Ontario Minneapolis, MN 55408-0524 M2H 2C9 69-1088B 69-1088B J.S.
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Page 9: Installation Instructions
à l’arrêt. Le registre D896 ne convient qu’aux 2. Vérifier les caractéristiques spécifiées dans les générateurs d’air chaud ou aux chaudières à gaz de type instructions et indiquées sur le produit, et s’assurer... -
Page 10: Montage
MISE EN GARDE qui suit; ne soit nécessaire. Le D896 peut être installé à la verticale — sur un coude du conduit d’aération. Voir la Fig. 1. ou à l’horizontale. Lorsque le registre d’aération est installé... - Page 11 L8148E, ne pas faire fonctionner le système si le 3. Inspecter le système d’aération modifié pour D896 est débranché. Dans un tel cas, le module s’assurer que l’inclinaison convient. L’inclinaison doit de commande ne fonctionnerait pas. être conforme aux codes et règlements locaux ou à...
- Page 12 INTERRUPTEUR DE SERVICE. LA POSITION NORMALE DE CET INTERRUPTEUR EST NORM. SI L’INTERRUPTEUR EST À LA POSITION SERV, LE REGISTRE RESTE OUVERT. MF11374 Fig. 5. Schéma de raccordement du D896 à un L8148E1166 au moyen d’un faisceau de fils et de deux prises molex. S8600F, H, M; S8610F,H...
- Page 13 S’il faut effectuer un raccordement sur 4. Vérifier si le D896 s’ouvre avant que la vanne à gaz place, voir les instructions du fabricant, ou consulter ne s’ouvre et que la veilleuse du brûleur principal la Fig.
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Page 14: Dépannage
1. S’il n’y a pas de courant, vérifier le transformateur, le limiteur et le câblage. 2. S’il y a du courant 24 V c.a et que le registre D896 est ouvert, consulter les instructions du fabricant de la chaudière ou du générateur d’air chaud. - Page 15 REGISTRE D’AÉRATION AUTOMATIQUE D896 NORMES ANSI ANNEXE A PROCÉDURE D’INSPECTION DE SÉCURITÉ D’UNE INSTALLATION EXISTANTE La procédure qui suit se veut un guide servant à déterminer si un appareil est correctement installé et s’il fonctionne en toute sécurité pour un usage continu.
- Page 16 REGISTRE D’AÉRATION AUTOMATIQUE D896 ANNEXE B PROCÉDURE D’INSTALLATION D’UN REGISTRE D’AÉRATION AUTOMATIQUE SUR UN APPAREIL EXISTANT La procédure qui suit se veut un guide servant à faciliter l’installation en toute sécurité d’un registre d’aération automatique alimenté à l’électricité sur un appareil déjà en place.