Calcana SR Series, Спецификации, руководство по установке, эксплуатации, техническому обслуживанию и каталог запасных частей

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SR -SERIES
53
13.0
OPTIONAL COMBUSTION AIR SUPPLY
(Refer to page 54)
The heater must be installed in a location where there is adequate air supply for combustion to take place. If
any of the following conditions are met, outside air must be brought to the unit.
If the heater is: 1.) Installed in a tightly closed building that has less than one (1 sq inch (2.54 sq cm) of free
opening for each 1,000 B.T.U input of heater or less than 100 square inches of free opening. Or, 2.) If the
building has contaminants in the air or the air is under a slight negative pressure.
IMPORTANT : Outside air supply duct is to be no less than 4" (10.2cm) in diameter for Inputs from 40,000 to
80,000 Btu/hr, and 6" (15.24 cm) for inputs from 100,000 to 200,000 Btu/hr. Duct to be smooth, single wall
or "B" vent style materials. Flexible materials are acceptable if lengths are no greater than 36" (92 cm) in
length. A combination of flexible material attached to the Burner Head with the balance of the air supply duct
being rigid, smooth materials, is acceptable. If condensation occurs and becomes a problem, insulate the
duct with approved materials.
NOTE: Maximum duct length for inputs of 40,000 to 150,000 Btu/hr s 45' (13.7m) minus any exhaust vent
length. Deduct 10' (3m) for every 90° elbow and 5' (1.52m) for every 45° elbow used.
Maximum duct length for inputs of 175,000 to 200,000 Btu/hr s 30' (9.1m). Total length of heater including the
length of intake and exhaust is not to exceed 110' (33.6 m). Shorten length of intake by 10' (3m) for every 90°
elbow and 5' (1.53) for every 45° elbow used.
Example A
100,000 Btu/hr input-50' (15.2m) reflector package, with 20' (6.1m) of exhaust vent and 1 - 90° elbow.
Calculation:
Maximum duct length is:
45'(13.7m)
Minus exhaust vent length: -20' (6.1m)
Minus 90° exhaust elbow: -10' (3m)
Conclusion:
The Maximum length of fresh air duct in this example is:
15' (4.6m)
Example B
200,000 Btu/hr input - 80' (24.4m) reflector package, with IO7 (3m) of exhaust vent and 1 - 90° elbow.
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 occurs, insulate duct or contact distributor for alternate methods for your installation. Slope
duct down, away from burner box towards the combustion air intake hood. The combustion air intake hood
must be installed at a height sufficient enough to prevent any blockage by snow for your area.