Submittal Sheet

Page 6
I. On oil-fired and gas-fired heating appliances not equipped with a draft hood, a barometric
draft control MUST be installed to regulate proper air flow and fluctuations in the system's air
flow during operation. Fluctuations can come from wind loads on the outlet of the venter,
house depressurization during windy days and the different house ventilation requirements
between summer and winter operation. For gas appliances use a Field Controls Type MG-1
Barometric Draft Control. For oil appliances use a Field Controls Type M or RC Barometric
Draft Control. Gas-fired draft induced systems should have a single-acting or double-acting
barometric draft control installed.
V. INSTALLATION OF POWER VENTER
CAUTION: Failure to install, maintain and/or operate the power venting system in accordance
with manufacturer's instructions will result in conditions which may produce bodily injury and/or
property damage.
A. Remove power venter from box and inspect unit for damage. If the carton has been crushed
or mutilated, check unit very carefully for damage. Rotate venter wheel to insure that the
motor and venter wheel rotate freely. DO NOT install if any damage is apparent. Refer to
unit sizing chart to check proper venting sizing.
B. Location of the termination of the venting system should be installed in accordance with the
National Fuel Gas Code, A.N.S.I.Z233.1, manufacturer's recommendations, and/or local
codes which are applicable. See the following requirements or refer to installation location
Diagram A for typical locations.
1. The exit termination of mechanical draft systems shall not be less than 7' above grade
when located adjacent to public walkways.
2. A venting system shall terminate at least 3' above any forced air inlet located within 10'.
3. The venting system of other than a direct vent appliance shall terminate at least 4'
below. 4' horizontally from or 1' above any door, window or gravity air inlet into the
building.
4. The vent termination of a direct vent appliance with an input of 50,000 BTU/Hr or less,
shall be located at least 9" from any opening through which vented gases could enter
the building. With an input over 50,000 BTU/Hr, a 12" termination clearance shall be
required.
5. The vent termination point shall not be installed closer than 3' from an inside corner of
an L-shaped structure.
6. The vent termination should not be mounted directly above or within 3' horizontally from
an oil tank vent or gas meter.
7. The bottom of the vent terminal shall be located at least 12" above finished grade.
C. The power venter should never be installed with the venter motor in the vertical position.
This could lead to premature motor failure. The venter outlet can be oriented at any angle,
from horizontal to vertical. The power venter should be installed as close to the outside wall
as possible.