Table of Contents
Advertisement
For Vertical PVC Concentric Termination - PVC/CPVC Material Only
• The concentric termination may be shortened, but not lengthened from its original factory supplied length.
• 2 in. (50 mm) or 3 in. (75 mm) PVC or CPVC pipe may be used with the concentric termination.
Maintain the same vent pipe diameter from the Combi Boiler flue to the termination.
• Use a condensation drain if necessary.
• In the Commonwealth of Massachusetts a carbon monoxide detector is required for all side wall horizontally
vented gas fuel equipment. Refere to the page 4 for more detail information.
3 in. (75 mm) pipe and 2 in. × 3 in. Increaser
coupling requires when using Plastic Rain
Cap.
Plastic Rain Cap
3 in. (75 mm) pipe
2 in. × 3 in. Increaser coupling
2 in. (50 mm) pipe
Plastic Rain Cap*
Increaser coupling*
* Not supplied with
Combi Boiler, order
separately.
Intake
2 in. (50 mm)
or
3 in. (75 mm)
(e.g. 2 in. Concentric Termination)
• The combustion
≥ 3 ft Min.
• Any other building
12 in. (305 mm)
above grade or
over maximum
snow level.
2 in. or 3 in.
Concentric
Termination
Exhaust
2 in. (50 mm)
or
3 in. (75 mm)
air intake of any
appliance
opening
When using 3 in. Concentric Termination,
3 in. (75 mm) pipe and 2 in. × 3 in.
Increaser couplings are required.
Increaser couplings need to be used just
prior to 3 in. Concentric Termination.
3 in. pipe
3 in. pipe
2 in. × 3 in. Increaser
coupling
2 in. pipe**
** The length of the pipe between the
Increaser couplings and the
Exhaust and Intake Flue of the
Combi Boiler, and the concentric
termination vent pipe connections
should be up to 6 in. (152 mm).
Venting the Combi Boiler
31
Advertisement
Table of Contents
