UNPACKING INSTRUCTIONS
1. The Field Controls GVD Series Gas Vent Damper is packaged in a single carton containing an
assembled GVD, instruction manual, and a plug. NOTE: Some OEM supplied units have the wiring
harness attached.
2. Inspect for damage prior to the installation.
3. Retrofi t installations require a wire harness. Order the universal wire harness #46579100.
PRE-INSTALLATION WARNINGS
1. The Field Controls Gas Vent Damper must be installed by a qualifi ed installing agency in accordance
with the manufacturer's installation instructions. The defi nition of a qualifi ed installation agency is: any
individual, fi rm, corporation or company which either in person or through a representative is engaged
in, and is responsible for, the installation and operation of gas appliances and automatic vent damper
devices, who is experienced in such work, familiar with all the precautions required, and has complied
with all the requirements of the authority having jurisdiction. The qualifi ed installer shall fi ll in the
installer's name, address, and installation date on the label attached to the vent damper device.
2. Do not negate the action of any existing safety or operational controls.
3. When servicing controls, all wires must be LABELED prior to disconnection. Wiring errors can cause
improper and dangerous operation.
4. Device must be installed by a qualifi ed installer, in compliance with local codes or the National Fuel Gas
Code (ANSI Z223.1, NFPA 54 or CAN/CGA-B149) and the National Electrical Code (ANSI C1-NFPA
70).
5. Device conforms to ANSI Z21.66. CSA design certifi ed.
6. Use only with a listed gas fi red appliance equipped with a draft hood, the outlet area of which is not
greater than the inlet area of the device.
7. Install after the appliance draft hood, as close to the draft hood as possible, and without modifi cation to
the draft hood or the vent damper.
8. Locate in a venting system or section of a venting system so that it services only the single appliance for
which it is intended.
9. A minimum clearance of 6 inches (153mm) between the damper device and combustible construction
must be maintained and there must be provisions for access and service of the damper device.
10. Position indicator and service switch must be accessible to the user.
11. The installer must fi ll in the label on the side of the motor assembly cover.
12. This device must be installed only on a listed gas appliance connected to a factory built chimney or vent
complying with a recognized standard, or a masonry or concrete chimney lined with a lining material
acceptable to the authority having jurisdiction.
13. This vent damper device shall not be installed on an appliance with an automatic valve having a manual
valve control unless the manual valve control has been rendered in-operative or the automatic valve has
been replaced with a redundant automatic valve not equipped with a manual valve control.
PRE-INSTALLATION INSPECTIONS
PROCEDURE FOR SAFETY INSPECTION OF AN EXISTING APPLIANCE INSTALLATION
The following procedure is intended as a guide to aid in determining that an appliance is properly installed
and is in a safe condition for continuing use.
This procedure is predicated on central furnace, boiler, and water heater installations, and it should be
recognized that generalized procedures cannot anticipate all situations. Accordingly, in some cases,
deviation from this procedure may be necessary to determine safe operation of the equipment.
1. This procedure shall be performed prior to installation of the automatic vent damper device.
2. If it is determined there is a condition which could result in unsafe operation, the appliance should be
shut off and the owner advised of the unsafe condition. Do not install the automatic vent damper device
until the unsafe condition has been corrected.
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P/N 46352700 Rev J 05/19