Dcl c f f – John Wood Superflue Power Vent (75 Gallon) User Manual

Page 14

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Figure 11 Horizontal Vent Terminal Installations

GAS METER AND
REGULATOR

MECHANICAL AIR
SUPPLY INLET

1.8m (6 ft.) (Canada),

3m (10 ft.) (U.S.A.)

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

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

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.