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NOTE: THE EFFECTIVENESS OF
BAROMETRIC RELIEF DAMPER
DURING ECONOMIZING OPERA-
TION IS SYSTEM RELATED. PRES-
SURE DROP OF THE RETURN AIR
SYSTEM SHOULD BE CONSIDERED
TO CONTROL BUILDING PRESSUR-
IZATION.
Power Exhaust Accessory
The power exhaust accessory is
available on all 6¼-25 ton downflow
units. This accessory can be field
installed and will assist the barometric
relief damper in relieving building
pressurization.
Condensate Trap
The evaporator is a draw-thru
configuration. A trap must be field
provided prior to start-up on the
cooling cycle.
Clearance Requirements
The recommended clearances
identified with unit dimensions should
be maintained to assure adequate
serviceability, maximum capacity and
peak operating efficiency. Actual
clearances which appear inadequate
should be reviewed with the local
Trane sales personnel.
Application of this product should be
within the cataloged airflow and
cooling considerations. The UPG
Computer Performance Program will
simulate product performance for a
set of given conditions. It is recom-
mended that the program be run for
the worst design scenario for a
particular unit. For more information
on the UPG Computer Product
Performance program contact your
local Trane Representative.
Low Ambient Cooling
This Voyager line features, as
standard, low ambient cooling down
to 0 F. Contact your local Trane
Representative for more assistance
with low ambient cooling applications.
Barometric Relief
This product offers an optional
barometric relief damper included in
the downflow economizer accessory.
This accessory consists of gravity
dampers which open with increased
pressure. As the building air pressure
increases, the pressure in the unit
return air section also increases,
opening the dampers and relieving
the conditioned space.
Heating Operation
The heat exchanger is manufactured
with aluminized steel. To prevent
condensation within the heat ex-
changer, do no exceed 50% outside
air.
Application
Considerations
Unit Pitch
These units have sloped condensate
drain pans. Units must be installed
level; any unit slope must be toward
access side of unit.
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