LAARS Heating Systems
Page 4
8.
Vent pipe between the Mighty Venter and vent
hood is acceptable. However, all vent pipe
connections after the power venter will be under
positive pressure during operation and must be
sealed with high-temperature caulk or aluminum
vent pipe tape to prevent leakage into the
structure.
All accessible joints under positive pressure must
be checked for tightness after installation. The
vent connection under positive pressure shall be
secured by at least two corrosion-resistant screws
or other mechanical locking means. Also, the
segment of the vent systems under positive
pressure shall be checked once a year by a
qualified service person.
9.
The vent system must be adequately supported to
prevent sagging, but in no case shall the supports
be less than every 3 feet (0.9m).
10.
The venting system must be sloped upward not
less than 1/4" per foot from the boiler or water
heater to the vent terminal. The vent system must
be installed to prevent collection of condensate
(should it occur).
11.
Side Wall Vent Hood Location:
a)
The Vent Hood shall not terminate less than
6 feet (1.8m) from a combustion air inlet of
another appliance.
b)
The vent hood shall not terminate less than
3 feet (0.9m) from any other building
opening or any service regulator.
c)
The vent hood shall not terminate directly
above a gas utility meter or service
regulator.(Also see the section entitled
“Side Wall Vent Hood Location”)
12.
Laars’ vent pipe reducers to be installed as
shown in Figure 1.
13.
Allow for a minimum of 18" (457mm) vertical
rise off the top of the appliance before the vent
makes a 90 degree elbow to the horizontal (see
Figure 1).
14.
Vent pipe shall not be run through an unheated
space or interior part of an open chimney unless
the vent pipe is insulated.
15.
Plan the vent system so that code required clearances
are maintained from plumbing and wiring.
16.
The Mighty Venter must be mounted so that the
shaft of the motor remains
horizontal
to prevent
bearing wear and for proper Fan Proving Switch
operation.
17.
Ambient temperature surrounding Mighty Venter
must not exceed 104°F (40°C).
18.
To prevent personal injury and equipment
damage, disconnect power supply to boiler or
heater when working on Mighty Venter.
19.
Make certain the power supply is adequate for
Mighty Venter motor requirements. Do not add
the Mighty Venter to a circuit where the total
load is unknown.
20.
IMPORTANT:
The following clearances to
combustible materials must be maintained for the
Mighty Venter: sides: 6 inches (152mm); back:
8 inches (203mm).
SECTION 2.
Side Wall Vent Hood Location
If possible, locate the side wall vent hood on a
wall least prone to high winds. This will diminish
the possibility of appliance gas valve interruption
during periods of winds in excess of 40 MPH
(64kmh). The vent hood location must also be in
compliance with the following:
1.
Vent hood shall be a minimum of 7 feet (2.1m)
above grade when located adjacent to a public
walkway.
2.
Vent hood shall be a minimum of 4 feet (1.2m)
below, 4 feet (1.2m) horizontally from or 3 feet
(0.9m) above any door, window or gravity air
inlet into the building. Vent hood shall not
terminate less than 3 feet (0.9m) from any other
building opening or any gas service regulator.
3.
Vent hood shall be installed no closer than 3 feet
(0.9m) from an inside corner of an L-shaped
structure.
4.
Vent hood shall be installed at least 3 feet (0.9m)
above any forced air inlet located within 10 feet
(3m). Vent hood shall not terminate less than
6 feet (1.8m) from a combustion air inlet of
another appliance.
5.
Vent Hood shall not terminate directly above a
gas utility meter or service regulator.
6.
Do not install the vent hood closer than 2 feet
(0.6m) from an adjacent building.
SECTION 3.
Installation
3a. Inspection and Unpacking
Immediately after receiving your Mighty Venter
kit, inspect the shipment packaging and record any
damage on the shipping documents. Unpack the
equipment and carefully inspect for obvious damage
due to shipment. If any damage has occurred, YOU
must file a claim with the transporter, since they will
not accept a claim from the shipper (Laars).
Cartons containing the following should be
included in the Mighty Venter Kit:
1.
Mighty Venter (either MV2, MV3, MV4 or MV5).
2.
Vent Hood
