DT Series - Installation manual (V4_2022)
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4.3.
INSTALLATION
•
When the heater is hung over a work area, it must be installed at an adequate height. The
installation of a service platform might be required.
•
When fire dampers are used in the ducts, they must be equipped with an electric switch
wired to the safety control circuit of the unit to shut down the air heater when fire is
detected in ducts. These electric switches must be wired to re-activate the safety circuit
only when the fire dampers are completely opened.
•
To prevent any risk of freeze-up, the installer must install a low temperature switch if not
supplied with the unit from the factory.
•
Depending on unit size, diameters of the flue gas connection vary between 6 and 14
inches. DT series combustion systems are designed to operate safely against a maximum
back pressure of 0.25" water column with positive stock category IV type sealed corrosion
resistant single wall or double wall flue vent, either in a vertical arrangement (through the
roof) or in a horizontal arrangement (through the wall), or a combination of both.
•
The heater should be attached to the roof curb or supporting structure with screws, bolts,
or any other appropriate fastening means.
•
In some conditions the heater could produce condensate which is a corrosive liquid that
must be treated and drain correctly with provision to prevent freezing, or the heater could
become flooded and/or cause water damage in the surrounding area.
4.4.
LIFTING
The heater is built on a base frame equipped with lifting lugs specifically located to help
proper lifting of the unit. Employ the use of spreader bar to maintain a vertical position of the
slings and keep them away from the unit casing to prevent
scratches
, surface blemishes or
other structural damages. The lifting lugs are designed to be lifted straight up vertically; the
maximum angle from a vertical lift which is allowed is 30 degrees. All lifting lugs must be used
at to distribute load properly and the equipment must be lifted simultaneously by all the lifting
lugs.
NOTICE!
If using a lift truck, ONLY lift using the perimeter base frame. DO NOT allow forks to lift on
unit casing or unit floor, it can be easily damaged.
