RBI Boiler, Инструкция по установке и эксплуатации, Страница: 76 / 154

76
11.11.3 - Prepare wall
penetrations
1. Air pipe penetration:
a. Cut a hole for the air pipe. Size the air pipe
hole as close as desired to the air pipe
outside diameter.
2. Vent pipe penetration:
a. Cut a hole for the vent pipe. For
either combustible or noncombustible
construction, size the vent pipe hole with at
least a 1/2 inch clearance around the vent
pipe outer diameter;
b. Insert a galvanized metal thimble in the
vent pipe hole as shown in Figure 11-17.
3. Use a sidewall termination plate as a template
for correct location of hole centers.
4. Follow all local codes for isolation of vent pipe
when passing through fl oors or walls.
5. Seal exterior openings thoroughly with
exterior caulk.
11.11.4 - Termination and
fi ttings
1. The air termination coupling must be oriented
at least 12 inches above grade or snow line
as shown in Figures 11-15 and 11-16.
2. Maintain the required dimensions of the
fi nished termination piping as shown in
Figures 11-15 and 11-16.
3. Do not extend exposed vent pipe outside
of the building more than what is shown in
Figures 11-15 and 11-16. Condensate could
freeze and block vent pipe.
11.11.5 - Multiple vent/air
terminations
1. When terminating multiple heaters terminate
each vent/air connection as shown in Figure
11-18.
WARNING!!!
All vent pipes and air
inlets must terminate at the same height
to avoid possibility of severe personal
injury, death, or substantial property
damage.
2. Place wall penetrations to obtain minimum
clearance of 12 inches between edge of
air inlet and adjacent vent outlet, as shown
in Figure 11-18 for U.S. installations. For
Canadian installations, provide clearances
required by CSA B149.1 Installation Code.
3. The air inlet is part of a direct vent connection.
It is not classi fi ed as a forced air intake with
regard to spacing from adjacent heater vents.
11 - INSTALLATION - Vent and combustion air
Figure 11-17 Two pipes sidewall termination
assembly
Figure 11-18 Two pipes multiple heaters vent
terminations
Air intake
Flue exhaust
Metal thimble
Termination
template
Bird screen
NOTICE!
keep the air intake at min. 12” from grade or
snow line. Provide vent and air intake with bird screen
Vent terminals
Air intake
between edge
of each air
intake pipe
Same distance
for vent
terminal