11
ENGLISH
Indoor unit installation
Horizontal application
Horizontal applications will normally be used in an attic or crawl
space. This type of installation requires supply air plenum or duct
to be connected to the supply collar and a return air plenum or
duct be attached to the unit inlet collar. The supply ducts will be
connected to the supply air plenum and routed through the attic
to a register in each room. Use a Non-tape sealant such as mastic
or an aerosol sealant to prevent leaks in the ducts and the plenum.
The opposite end of the return air duct is attached to a return lter
grille housing. The lter grille is usually located in a wall, just below
the ceiling or the ceiling in a hallway. Use a Non-tape sealant such
as mastic or an aerosol sealant to prevent leaks in the ducts and
the plenum.
Refrigerant pipe
conections
Horizontal left
(right to left) drain
connections
Horizontal right
(left to right)
drain pan
opening
Horizontal right application (left to right)
The unit is shipped to be installed without modication in a right to left conguration. For left to right applications:
1. Remove the unit access panels
2. Remove the cooling coil after disassembling bracket coil and plate.
3. Move the condensate drain pan to the right side of the unit chassis.
4. Move the Evap In temperature sensor to holder of the right side.
5. Reinstall the cooling coil.
6. Connect the condensate drains and refrigerant lines. DRY NITROGEN MUST BE FLOWED THROUGH REFRIGERANT LINES
DURING SOLDERING OPERATION.
7. Reinstall unit access panels.
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In all horizontal applications in which the unit is installed above a nished ceiling and/or living space, it is recommended
that a secondary drain pan (eld supplied) is installed under the entire unit to avoid damage to the ceiling in the event of
condensate overow.
Evap. In Temperature Sensor
Move drain pan to right side of coil
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