Duct Connections - Trane *UH2B060A9V3VA Installer's Manual

Installer's Guide
* Furnaces installed near chemical storage areas.
Exposure to the following substances in the combus-
tion air supply will also require OUTDOOR AIR for
combustion:
* Permanent wave solutions
* Chlorinated waxes and cleaners
* Chlorine based swimming pool chemicals
* Water softening chemicals
* Deicing salts or chemicals
* Carbon Tetrachloride
* Halogen type refrigerants
* Cleaning solvents (such as perchloroethylene)
* Printing inks, paint removers, varnish, etc.
* Hydrochloric acid
* Cements and glues
* Antistatic fabric softeners for clothes dryers
* Masonry acid washing materials
NOTE: Extended warranties are not available in some
instances. Extended warranty does not cover repairs to
equipment installed in establishments with corrosive
atmospheres, including but limited to, dry cleaners, beauty
shops, and printing facilities.

DUCT CONNECTIONS

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CAUTION
SAFETY HAZARD
Sharp Edge Hazard. Be careful of sharp edges on equip-
ment or any cuts made on sheet metal while installing or
servicing. Personal injury may result.
Air duct systems should be installed in accordance with
standards for air conditioning systems, National Fire
Protection Association Pamphlet No. 90. They should be
sized in accordance with ACCA Manual D.
Central Furnaces, when used in connection with cooling units,
shall be installed in parallel or on the upstream side of the
cooling coil to avoid condensation in the heat exchanger. With a
parallel flow arrangement, the dampers or other means used to
control flow of air shall be adequate to prevent chilled air from
entering the Furnace, and if manually operated, must be
equipped with means to prevent operation of either unit unless
the damper is in full heat or cool position.
Flexible connections of nonflammable material may be used for
return air and discharge connections to reduce the transmission
of vibration. Though these units have been specifically designed
for quiet, vibration free operation, air ducts can act as sounding
boards and could, if poorly installed, result in vibration to the
annoyance level.
When the Furnace is located in a utility room adjacent to the
living area, the system should be carefully designed with
returns to minimize noise transmission through the return
air grille. Although these Furnaces are designed with large
blowers operating at moderate speeds, any blower moving a
high volume of air will produce audible noise which could be
objectionable when the unit is located very close to a living
area. It is often advisable to route the return air ducts under
the floor or through the attic. Such design permits the
installation of air return remote from the living area (i.e.
central hall).
When the Furnace is installed so that the supply ducts carry
air circulated by the Furnace to areas outside the space
containing the Furnace, the return air shall also be handled
by a duct(s) sealed to the Furnace and terminating outside
the space containing the Furnace.
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Figure 11
Figure 12
18-CD26D1-10