BOILER BOOK CFC-E
STACK/BREECHING SIZE CRITERIA
42
Figure 32. Horizontal through-wall venting using inside air for combustion
The vent must be installed to prevent the potential accumulation of stack condensate in the
horizontal run of vent pipe. Therefore, it is recommended that:
1. The vent shall be installed with a slight downward slope of not more than 1/4” per foot of
horizontal run to the vent termination.
2. The vent must be insulated through the length of the horizontal run.
Note: For installations in cold/freezing climates, it is recommended that:
1. The vent shall be installed with a slight upward slope of not more than 1/4" per foot of horizontal
run to the vent termination. In this case, an approved Condensate trap must be installed per
applicable codes.
2. The vent must be insulated through the length of horizontal run.
The stack vent cap MUST be mounted on the exterior of the building. The stack vent cap cannot be
installed in a well or below grade. The stack vent cap must be installed at least two feet above
ground level and above normal snow levels.
The stainless steel direct vent cap must be furnished in accordance with AGA/CGA requirements.
Refer to table for the recommended sizes of horizontal vent pipe.
Summary of Contents for CFC-E 1000
Page 1: ...CFC E ClearFire Condensing Boiler Boiler Book 02 2018...
Page 52: ...BOILER BOOK CFC E EXAMPLE SYSTEM SCHEMATICS 52 Figure 38 Primary Secondary Single Boiler...
Page 53: ...BOILER BOOK CFC E EXAMPLE SYSTEM SCHEMATICS 53 Figure 39 Primary Secondary Two Boilers...
Page 54: ...BOILER BOOK CFC E EXAMPLE SYSTEM SCHEMATICS 54 Figure 40 Primary Secondary Three Boilers...
Page 55: ...BOILER BOOK CFC E EXAMPLE SYSTEM SCHEMATICS 55 Figure 41 Primary Variable Flow Single Boiler...
Page 56: ...BOILER BOOK CFC E EXAMPLE SYSTEM SCHEMATICS 56 Figure 42 Primary Variable Flow Two Boilers...
Page 57: ...BOILER BOOK CFC E EXAMPLE SYSTEM SCHEMATICS 57 Figure 43 Primary Variable Flow Three Boilers...
Page 60: ...BOILER BOOK CFC E EXAMPLE SYSTEM SCHEMATICS 60...
Page 61: ...BOILER BOOK CFC E e mail info cleaverbrooks com Web Address http www cleaverbrooks com...
