Vertical Venting (Continued) Roof Exhaust : Two Or More Units - Use 'B' Style Chimney; Figure 34. Common Vertical Venting, Two Or More; Line Voltage Thermostat - Calcana CAL Series Installation, Operation, Service, And Parts Manual

CAL-SERIES

VERTICAL VENTING (CONTINUED) ROOF EXHAUST : TWO OR MORE UNITS - USE 'B' STYLE CHIMNEY.

TWO OR MORE UNITS INTO A COMMON CHIMNEY – SIDE VIEW
NOTE: For venting of two or more heaters into one common chimney, in Canada refer to the Natural Gas
and Propane Installation Code, CSA B149.1 or latest edition and in the USA, the National Fuel Gas Code,
ANSI Z223.1/NFPA 54 or latest edition.
Units that are commonly vented must be controlled by the same line voltage thermostat.
SIDE VIEW
WARNING: MAKE SURE VENT CAP IS NOT OBSTRUCTED BY SNOW. ADJUST ACCORDINGLY.
TOP VIEW
Figure 34. COMMON VERTICAL VENTING, TWO OR MORE UNITS INTO ONE COMMON VENT
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