LAARS Mighty Venter MV2 (Sizes 175-400) - Install and Operating Manual - Manual (Page 5)

Mighty Venter Power Vent System
Page 5
1. Locate the Vent Hood a minimum of 7 feet
(2.1m) above a public walkway.
2. Locate the Vent Hood a minimum of 3 feet
(0.9m) above, or 4 feet (1.2m) below and 4 feet
(1.2m) horizontally from any door, window, or
gravity air inlet into the building. The Vent Hood
cannot terminate less than 6 feet (1.8m) above
any forced air inlet located within 10 feet (3.0m).
3. The Vent Hood must be installed at least 3 feet
(0.9m) from any other building opening or any
gas service regulator.
4. Do not install the vent hood closer than 2 feet
(0.6m) from an adjacent building.
5. Install the Vent Hood no closer than 3 feet (0.9m)
from an inside corner of an L-shaped structure.
6. Do not terminate the Vent Hood directly above a
gas utility meter or service regulator.
CODE REQUIREMENTS
The Power Venter installation must be in
accordance with the following requirements of the
National Fuel Gas Code:
All portions of the vent system under positive
pressure during operation (on the outlet side of the
Power Venter) shall be designed and installed so as to
prevent leakage of flue or vent gases into a building.
The boiler must enter the vent system on the inlet
side of the Power Venter.
Provision shall be made to interlock the
boiler(s) to prevent the flow of gas to the main burners
when the draft system is not performing so as to
satisfy the operating requirements of the equipment for
safe performance. See the “Electrical Wiring” section
in this manual for details.
Power Venter Installation
The Power Venter must be mounted with the
motor shaft horizontal to ensure proper operation of
the Fan-Prover switch and prevent motor bearing
wear (see Fig. 1). The installer must supply plumber's
strap or threaded rod with nut and washers for
mounting.
Figure 2. Side Wall Vent Hood Locations.
Vent Hood
7 (2.1) Minimum
Above Public
Walkway
Vent Hood
Vent Hood
1 (0.3) Above Grade
4 (1.2)
Minimum
4 (1.2)
Minimum
Vent Hood Must Be
Mounted At Least
4 (1.2) Below Windows
3 (0.9) Minimum
Vent Hood
4 (1.2)
Minimum
** Vent Hood Must Be
Mounted At Least
3 (0.9) Above Windows
and Doors
Dimensions shown in feet (m).
6 (1.8) Above Any
Outside Air Intake
Within 10 (3.0)