Gasmaster R Series, Руководство по установке, Страница: 35 / 81

Venting Part 5.56:
Vent Terminations for All Single Pipe Applications
Intake and exhaust pipes should terminate at a rooftop or side wall location. Keep exhaust plumes well
away from all building air intakes including those of neighbouring properties.
Single pipe straight, 45 or 90 and concentric terminations are permitted with single pipe systems. Examples below.
All venting must be installed in accordance with the requirements of the jurisdiction having authority: in Canada, Part
8,
Venting Systems of the B149.1-10 Code and any other local building codes are to be followed. In the USA the
National Fuel Gas Code, ANSI 223.1, latest edition, prevails. Where there is a discrepancy between the installation
instructions below, and the code requirements, the more stringent shall apply.
Venting Part 5.57
Rooftop Single Pipe Vent Termination
Rooftop vents must terminate as follows:
• The exhaust pipe can terminate in an open vertical orientation without concern about rain infiltration because this
will drain away through a properly configured condensate trap.
•
If used in a vertical application the intake air pipe is not typically drained, so it must be terminated with a down-
turned elbow to prevent rain ingress thru the air intake (see Figure 5.57.1 ). The intake pipe does not need to
penetrate the roof at the same elevation as the exhaust; lower down the roof is OK. To promote the projection of
exhaust away from the building and from the intake pipe, minimum distance between intake and exhaust outlet
should be 12”. Optional bird screen may be placed in a termination fitting.
• Inlet & exhaust can be piped to the roof and terminated with a concentric termination as seen in
Figure 5.57.2 .
• The mechanical room can be used for boiler intake with a single side wall or roof termination for exhaust. See
Figure 5.57.3. This can be done only with strict adherence to Table 2-1 on page 34.
•
DO NOT exhaust vent into a common venting system.
Figure 5.57.1