WARNING -TO REDUCE THE RISK OF FIRE,
ELECTRIC SHOCK, OR INJURY TO PERSONS,
OBSERVE THE FOLLOWING:
A. Use this unit only in the manner intended by the manu-
facturer. If you have any questions, contact the manu-
facturer.
B. Unplug or disconnect the fan from the power supply
before servicing. Also switch power off at service panel
and lock service panel to prevent power from being
switched on accidentally. When the service disconnect-
ing means cannot be locked, securely fasten a promi-
nent warning device, such as a tag to the service panel.
C. Installation work and electrical wiring must be done by
qualified person(s) in accordance with all applicable
codes and standards, including fire-rated constructions.
D. Sufficient air is needed for proper combustion and
exhausting of gases through the flue (chimney) of fuel-
burning equipment to prevent back drafting. Follow the
heating equipment manufacturer's guide lines and safe-
ty standards, such as those published by the National
Fire Protection Association (NFPA) and the American
Society for Heating, Refrigeration and Air Conditioning
Engineers (ASHRAE), and the local code authorities.
E. When cutting or drilling into wall or ceiling, do not dam-
age electrical wiring or other hidden utilities.
F. Ducted fans must always be vented to the outdoors.
G. NEVER - place a switch where it can be reached from
a tub or a shower.
CAUTION -
For general ventilating use only. Do not use to
exhaust hazardous or explosive materials
and vapors.
CAUTION -
Do not use in locations readily accessible to
people or animals. This fan is intended for
use facing an unoccupied space only. Be
sure your fan is properly installed. Your fan
is designed to operate on 120 VAC 60 Hz.
WARNING -
To reduce the risk of fire or electric shock, do
not use this fan with any solid state speed
control.
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• National codes require 1 square foot of free area in the
foundation for every 150 square feet of crawlspace area.
Most homes do not meet the criteria. The Lomanco
Powered Crawlspace Vent will assist with the air move-
ment in an under ventilated home by providing 110 CFM.
• The fan is controlled by a de-humidistat which will oper-
ate the fan if the relative humidity is above the set point.
The fan also has a built in thermostat, which will shut the
fan off if the temperature is below 40° F. The fan will
operate if the temperature is above 50° F and the de-
humidistat is in the closed position. This unit has been
preset at 60% RH.
To aid natural crawlspace ventilation, mechanical
ventilation should exchange the crawlspace air at
least four times an hour or every 15 minutes. To deter-
mine this, multiply the square footage of the crawl-
space by the height to calculate the cubit feet of the
crawlspace and then divide by 15 to determine the
CFM needed.
110 CFM
FAN
HUMIDITY
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EXAMPLE:
Home with 1500 square foot crawlspace 2 feet tall.
(1500) (2) = 3000 cubic feet
3000 / 15 = 200 cfm required
Each fan provides 110 CFM so one should use two
fans.
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R E A D A N D S A V E T H E S E I N S T R U C T I O N S
Summary of Contents for PCV1
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