27
e) Terminate vent at least six (6) feet away from adja-
cent walls.
f) DO NOT terminate vent closer than five (5) feet
below roof overhang.
Canadian Installations
Refer to the latest edition of CSA B149 Installation
Code.
A vent shall not terminate:
a) Directly above a paved sidewalk or driveway
which is located between two single family
dwellings and serves both dwellings.
b) Less than 7 ft. (2.13m) above a paved sidewalk or
paved driveway located on public property.
c) Within 6 ft. (1.8m) of a mechanical air supply inlet
to any building.
d) Above a meter/regulator assembly within 3 ft.
(900mm) horizontally of the vertical center-line of
the regulator.
e) Within 6 ft. (1.8m) if any gas service regulator vent
outlet.
f) Less than 1 ft. (300mm) above grade level.
g) Within 3 ft (1m) of a window or door which can be
opened in any building, any non-mechanical air
supply inlet to any building to the combustion air
inlet of any other appliance.
h) Underneath a verandah, porch or deck, unless:
(i) the verandah, porch or deck is fully open on a
minimum of two sides beneath the floor, and
(ii) the distance between the top of the vent termi-
nation and the underside of the verandah,
porch or deck is greater than 1 ft (30cm).
Venting Installation Tips
Support piping:
· horizontal runs- at least every five (5) feet.
· vertical runs - use braces:
· under or near elbows
Follow items listed below to avoid personal injury or
property damage.
· Cut nonmetallic vent pipe with fine-toothed hacksaw
(34 teeth per inch).
· Do not use nonmetallic vent pipe or fittings that are
cracked or damaged.
· Do not use nonmetallic vent fittings if they are cut or
altered.
· Do not drill holes, or use screws or rivets, in non-
metallic vent pipe or fittings.
To make metallic vent joints:
· Do not install seams of vent pipe on bottom of runs.
· Completely seal all joints and seams with silicone
sealant.
Venting Configurations
The following is a detailed explanation of each venting
system WITHOUT and WITH add-on condensing heat
exchanger (CHX), its installation requirements, the
components used, and part numbers for each.
For boilers connected to gas vents or chimneys, vent
installations shall be in accordance with Part 7,
Venting of Equipment, of the latest edition of National
Fuel Gas Code, or in Canada, the latest edition of CSA
B149 Installation Code for Gas Burning Appliances
and Equipment, or applicable provisions of local build-
ing codes.
NOTE:
For direct vent installations where the air is
piped in from outside, the protective screen on the
combustion air blower may be relocated to the air
inlet termination elbow to act as an inlet screen.
NOTE:
The words "Flue Exhaust", "Flue" and
"Exhaust Vent" are used interchangeably.
WARNING:
Examine the venting system at least
once a year. Check all joints and vent pipe
connections for tightness, corrosion or deterioration.
Содержание 751
Страница 2: ...2...
Страница 6: ...6 Component Locations Fig 1 Component Locations...
Страница 14: ...14 Fig 4 Single Boiler Primary Secondary Piping Fig 5 Single Boiler Primary Secondary Piping with CHX...
Страница 15: ...15 Fig 6 Dual Boiler Piping Fig 7 Dual Boiler Piping with CHX...
Страница 20: ...20 Fig 13 Single Boiler Pool Application Fig 14 Single Boiler Pool Application with CHX...
Страница 44: ...44 Figure L 2 WIRING DIAGRAM WIRING DIAGRAM...