8
4.
Within 6’ of a mechanical air supply inlet to any building, or roof eve containing soffit openings.
5.
Above a meter/regulator assembly within 3' horizontally of the vertical centerline of the regulator.
6.
Within 3' horizontally of any gas service regulator vent outlet up to a height of 15’.
7.
Less than 30” plus snow allowance above grade, or any surface that will support snow, ice, or debris. The exhaust must be a
minimum of 18” above the air inlet, and the air inlet must always be a minimum of 12” plus snow allowance above any surface that
will support snow. (Two feet plus snow allowance is highly recommended). Consult your weather office, for the maximum typical
snowfall for your region.
8.
Underneath a wooden verandah, porch, or deck.
9.
Underneath cement verandah, porch, or deck, unless both ends are open and the exhaust pipe is installed at least 24” under the deck
floor.
10.
So situated that the flue gases are directed towards brickwork, siding, or other construction, in such a manner that may cause damage
from heat or condensate from the flue gases.
11.
Less than 3’ from an inside corner of an L-shaped structure (including walls and fences).
3.5 Determining Vent Lengths
Use the following chart to determine the maximum amount of vent pipe that can be used. This chart calculates, sweep and 45º elbows, and
90º elbows at 5 equivalent feet. Note: chart shows allowable equivalent vent lengths for intake and exhaust vents separately, thus a Ti100
can be installed with 105 equivalent feet of intake venting and 105 equivalent feet of exhaust venting.
IMPORTANT:
•
The length of one vent pipe (intake or exhaust) may not exceed the length of the other vent pipe by more then 20 equivalent feet.
•
The three 90
°
elbows of the exterior vent piping (two outlet, and one inlet) do not have to be included, as they are taken into
consideration in the vent calculations.
•
For 150 and 200 Models, Propane Gas (LP) maximum vent length cannot exceed 50 equivalent feet.
3.6 Outdoor Horizontal Venting
Vent piping outside the Building is permitted under the following conditions:
1.
The maximum length outside the building is 20 feet. (Outdoor length must be included in the overall vent length calculation.)
2.
Only 3” pipe can be used for Ti100-200, only
4” pipe can be used for Ti400.
3.
All normal termination clearances are
maintained.
4.
All exterior exhaust vent pipes are insulated
with 3.5”-ID, ½”-thick, for Ti100-200, or
4.5”-ID, ½”-thick, for Ti400,
Closed Cell
Foame d Polyolefin Tubing
i.e., “
Tundra Seal
Plus”
or equivalent.
5.
The pipe is supported every 24”
6.
The exhaust and inlet are sloped back to the
boiler ½ ” elevation for every foot.
Insulation
“Tundra Seal
Plus” 3.5” or
4.5”-ID. ½” thick
Supports every 24”
12” plus
allowance above
grade
Exhaust
Inlet
Maximum of 20 feet is
permitted for outside a
building using 3” pipe
ONLY.
Apply plate here
Gas Vent Directly Below
Keep Free of Obstructions
Model
size
Type
Length
1
2
3
4
5
6
7
8
9
Ti100
3"
NG,LP
105
100
95
90
85
80
75
70
65
60
Ti150-200
3"
Natural
105
100
95
90
85
80
75
70
65
60
Ti150-200
3"
LP
50
45
40
35
30
25
20
15
10
5
4"
30
25
20
15
10
5
6"
65
60
55
50
45
40
35
30
25
20
Ti400
Natural
& LP
Содержание Trinity Ti 100
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