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LOCHINVAR CORPORATION
300 MADDOX SIMPSON PKWY
LEBANON, TN 37090
www.lochinvar.com
Designer’s Guide / Power-fin Water Heater
1. COMBUSTION AIR FROM OUTSIDE
If air is taken directly from outside the building with no
duct, provide two permanent openings to the
equipment room:
(a) Combustion air opening, with a minimum free area
of one square inch per 4000 Btu/hr input (5.5 cm²
per
kW). This opening must be located within 12" (30 cm)
of the bottom of the enclosure.
(b) Ventilation air opening, with a minimum free area of
one square inch per 4000 Btu/hr input (5.5 cm²
per
kW). This opening must be located within 12" (30 cm)
of the top of the enclosure.
2. COMBUSTION AIR THROUGH DUCTS
If combustion and ventilation air is taken from the outdoors using
a duct to deliver the air to the equipment room, each of the two
openings should be sized based on a minimum free area of one
square inch per 2000 Btu/hr (11 cm²
per kW) of input.
3. COMBUSTION AIR FROM INTERIOR
SPACE
If air is taken from another interior space,
each of the two openings specified above
should have a net free area of one square
inch for each 1000 Btu/hr (22 cm²
per kW) of
input, but not less than 100 square inches
(645 cm²).
THE POWER-FIN COMES WITH LOUVER CONTACTS AS STANDARD EQUIPMENT. THE CONTACTS
WILL OPEN AND CLOSE A MOTORIZED LOUVER ON EACH CALL FOR HEAT
.
Did you Know?
Summary of Contents for Power-Fin
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