036-21540-001-A-0503
Unitary Products Group
13
EVAPORATOR BLOWER DISCHARGE
CONVERSION
All models can be field converted to the alternate evap-
orator discharge orientation, as indicated on the unit
dimensional drawings. The 3 through 10 ton units are
shipped with vertical fan discharge as standard. The 12
through 25 ton units are shipped with horizontal fan dis-
charge as standard.
Procedure for converting the fan discharge is similar on
all models, single fan or dual fan.
•
Remove the panel attachment screws on the alter-
nate location access panel (front evaporator panel
on 3-10 ton, roof panel on others). Remove the
panel and set aside.
•
Remove blower drive belt on all models with base
mounted motors. Remove the complete fan motor
and drive on models with blower mounted motor
assemblies ( 3-5 ton ).
•
Remove the panel attachment screws on the
blower mounting panel. Do not remove fasteners
securing blowers to panel! The blowers are to
remain attached to the mounting panel at all times.
•
Carefully remove the blower panel assembly from
the evaporator cabinet. Do not allow blower hous-
ings to contact the evaporator coil during the
removal. On some models, the housing(s) will have
to be "rotated" to exit through the panel opening.
•
Interchange the blower panel assembly with the
position of the alternate access panel. Exercise
care in locating the panel. Do not allow blower
housings to contact the evaporator coil. Install the
attachment screws and tighten securely.
•
Install the blank access panel into the remaining
evaporator opening. Fasten securely.
•
Install drive belt on models with base mounted
motors. Models with blower mounted motors
require the motor mount to be relocated ( Fig. 7).
•
Adjust drive belts to appropriate tension. Test run
blower and observe operation for unusual sounds
or vibration.
FIGURE 7 - HORIZONTAL AND STANDARD VERTICAL DISCHARGE CONVERSION
HORIZONTAL DISCHARGE
STANDARD VERTICAL DISCHARGE
