Calcana SR Series, Specifications, Installation, Operation Service And Spare Parts Manual

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SR -SERIES
61
Example B
200,000 Btu/hr input - 80' (24.4m) reflector package, with
10’ (3m) of outside air intake duct and 1 - 90°
elbow in the exhaust vent.
Calculation:
Total maximum length of heater c/w outside air & exhaust vent is:
110' (33.6m)
Total combined length of heater and exhaust in this example is:
Heater Length: 80' (24.4m)
Exhaust length: 10' (3m)
90° Exhaust vent elbow: 10' (3m)
TOTAL COMBINED LENGTH: 100' (30.5m)
Amount to be deducted from total available length: -100' (30.5m)
Conclusion:
The Maximum length of fresh air duct in this example is:
10* (3m)
If condensation in exhaust venting is present then venting should be insulated or shortened. In Canada, install
according 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.
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,
ANSIZ223.1/NFPA 54 or latest edition.
NOTE: A small amount of condensation may occur from the heater when it starts the heating cycle. The
condensation should stop once the heater warms up. Make sure venting is sealed as previously noted. The
amount of condensation will increase the lower the ambient temperature is in the environment the heater is
operated