10
INSTALLATION
Locating the humidifier
• Provide a level, solid foundation for the humidifier.
Locate the humidifier as near as possible to a chimney
or outside wall so that the flue pipe from the humidifier
is short and direct. The location should also be such
that the gas ignition system components are protected
from water during humidifier operation and service.
• The humidifier should be installed in a location away
from drafts and should be properly protected. If installed
in a separate room, follow the instructions concerning
combustion and ventilation air.
• The humidifier should be located in an area where
leakage from the tank or its connections will not result
in damage to the adjacent structure or to lower floors of
the structure. When such locations cannot be avoided,
it is recommended that a suitable drain pan, adequately
drained, be installed under the humidifier. The pan must
not restrict combustion air flow.
• The humidifier must not be installed on carpeting, tile or
other combustible material other than wood flooring
(indoor application only).
• Install humidifier so that electrical components are
protected from water.
• The appliance must be kept free and clear of insulating
materials when located in an insulated space. Insulating
material may be combustible. Inspection of the appli-
ance area must be performed when the appliance is
installed, or when insulation is added.
Supply water and
drain overflow connections
IMPORTANT: The humidifier is shipped with the auto-
matic drain valve locked in the manual open position.
This position reduces the possibility of the valve seat
becoming damaged from the heat of sweating the drain
connection during installation. After the drain connection
has been completed, the “manual open” lever position
must be reset to the auto position. Failure to close the
drain valve will not allow the tank to fill.
Regardless of the type of water used, the following
general instructions must be followed:
• Union connections must be made at the humidifier on
the cold water supply and drain/overflow lines.
• A shutoff valve should be provided in the supply water
line to isolate the humidifier from the water system
while servicing.
• If the water pressure is above 60 psig (414 kPa) and/or
water hammer would be objectionable, a pressure
reducing valve or shock arrester should be installed.
• A 1" (25 mm) opening is provided in the humidifier tank
to accommodate skim and/or overflow protection.
(Note: Follow local code requirements regarding size of
drain pipe.)
• Insulating unions or bushings must be used to make
connections between copper and other dissimilar metal
fittings, such as galvanized steel. These insulating
fittings are required to minimize electrolytic corrosion,
which results from the direct connection of dissimilar
metals in a water system.
• Before beginning ignition sequence of the humidifier at
a new installation, be sure the humidifier tank is full of
water and the water is free to flow into the tank.
GTS-IOM-0900.pdf 10 11/17/2009 3:52:26 PM
