John Wood Superflue Power Vent (75 Gallon) - Manual (Page 14)

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A
E
F
F
Figure 11 Horizontal Vent Terminal Installations
G
GAS METER AND
REGULATOR
MECHANICAL AIR
SUPPLY INLET
1.8m (6 ft.) (Canada),
3m (10 ft.) (U.S.A.)
D
CL
C
F
F
F
B
1. ("A") Minimum 2.1m (7 ft.) above a paved sidewalk or
paved driveway that is located on public property.
2. ("B") Minimum 900mm (3 ft.) above any forced air or
mechanical air supply inlet located within 1.8m (6 ft.)
horizontally (Canada) or 3m (10 ft.) (U.S.A.).
3. ("C") Within 900mm (3 ft.) of any gas service regulator
vent outlet.
4. ("D") Minimum 900mm (3ft) horizontally of the vertical
centerline above the regulator vent outlet to a maximum
vertical distance of 4.5m (15ft).
5. ("E") Minimum 305mm (1 ft.) above grade level or antic-
ipated snow level.
6. ("F") Within 305mm (1 ft.) of any window or door that
can be opened, of any non-mechanical air supply inlet
or of the combustion air inlet of any other appliance.
7. ("G") Minimum 305mm (1 ft.) distance between the top
of the vent termination and the underside of a veranda,
porch or deck.
8. The manufacturer recommends the vent termination
shall not be mounted directly above or within 900mm (3
ft.) horizontally from an oil tank or gas meter to avoid
potential freeze-up or fouling from condensation.
SEALANT
SEALANT GROUND LEVEL
OR MAXIMUM
SNOW LINE*
Figure 9 Vent Termination Exterior Installation
RODENT SCREEN
(INSTALL INTO
ELBOW)
* WHERE SNOW COVER IS NORMAL DURING WINTER, ENSURE
SUFFICIENT VENT CLEARANCE TO PREVENT BLOCKAGE OR ICE BUILDUP.
300mm
(12 in.)
MIN.
ATTACH 90°
TERMINATION
ELBOW
150mm (6 in.)
VENT PIPING MAY BE
SLOPED IN ANY
DIRECTION, AS LONG
AS A WATER TRAP IS
NOT
CREATED IN
THE VENTING SYS-
TEM. THE SLOPE
SHOULD BE KEPT TO
A MINIMUM SO AS
NOT TO EXERT ANY
UNDUE STRESS ON
THE PIPE.
BRACKET
VENT
RISER
SEALANT
SEALANT
ATTACH 90°
TERMINATION
ELBOW
GROUND LEVEL
OR MAXIMUM
SNOW LINE*
Figure 10 Installation Of Fabricated Vent Riser.
RODENT
SCREEN
(INSTALL
INTO
ELBOW)
VENT PIPING TO BE
SLOPED (DOWN)
TOWARD HEATER TO
PREVENT WATER
FROM COLLECTING.
EQUIVALENT
VENT LENGTH
MEASURED FROM
THIS POSITION
* WHERE SNOW COVER IS NORMAL DURING WINTER, ENSURE
SUFFICIENT VENT CLEARANCE TO PREVENT BLOCKAGE OR ICE BUILDUP.
300mm
(12 in.)
MIN.