4
3.0 VENTING
The NY Thermal Trinity condensing gas boiler
is a high efficiency boiler utilizing induced
power venting, which is designed to be vented
directly outdoors, using the venting method
detailed in this section. Under no conditions,
may this unit vent gases into a masonry
chimney, unless it is vacant, and utilizes the
Trinity approved venting material (Solid core ABS or PVC
sch. 40
pipe, CPVC pipe, or AL29-4C Stainless
steel pipe) as illustrated in the figures on page 5.
3.1 VENT PIPE MATERIAL
Selection of the vent pipe material must be based upon the Local codes and regulations. The
Trinity boiler is certified to operate under all conditions using solid core ABS or PVC
sch.40
, or
CPVC. Local codes may prohibit the use of plastics, and stainless steel venting must be used
(AL29-4C).
3.2 VENTING CLEARANCES
1. It is highly recommended that the vent terminal be located where it will not be exposed to normal
prevailing winds.
2. 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.
Example: New Brunswick Canada the maximum typical snowfall is 19”, Thus in figures of Section 3.3, the
inlet must be (12”+19”) = 31” off the ground, the exhaust must be (31”+18”) = 49”.
3. The horizontal distance between the inlet and exhaust must be a minimum of 4” center to center. If
the horizontal distance between the inlet and exhaust is more then 12”, increase the vertical
separation by the same amount. Example: If horizontal separation is 24”, a minimum vertical
separation of 30” is required (24”-12”=12”), so increase minimum vertical separation by 12”),
(18”+12”=30”). If horizontal distance is greater then 6’, no additional vertical spacing is required.
Vertical separation is never required to be greater then 36”.
4. Under normal operating conditions this appliance will produce a plume of white gases, and should be
taken into consideration when selecting an adequate location. A 3’ diameter stainless, plastic, or
vinyl shield can be used to flash the exterior of the residence.
The vent terminal shall not terminate
:
•
Directly above a paved sidewalk or a paved
driveway that is located between two
buildings, and that serves both buildings;
•
Less than 7 feet above grade where located
adjacent to a paved driveway or public walkway.
•
Within 3' (three feet) horizontally of a window or door that can be opened, or non-mechanical air
supply inlet to any building.
•
Within 6’ of a mechanical air supply inlet to any building, or roof eve containing soffit openings.
•
Above a meter/regulator assembly within 3' horizontally of the vertical centerline of the regulator.
•
Within 6' of any gas service regulator vent outlet.
•
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.
These are code restrictions for the location
of the Flue gas vent terminal. Compliance
doesn’t insure a satisfactory installation;
good common sense must also be applied.
Caution
The vent connection and piping MUST
be perfectly aligned to the boiler
connection, AND MUST NOT APPLY
ANY WEIGHT OR LATERAL FORCE
TO THE FLUE BOX. NTI does not
warranty damages to the flue box.
