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FIGURE 15
CONDENSATE DRAIN
14
WARNING
DO NOT, UNDER ANY CIRCUMSTANCES, CONNECT RETURN DUCTWORK TO
ANY OTHER HEAT PRODUCING DEVICE SUCH AS A FIREPLACE INSERT,
STOVE, ETC. UNAUTHORIZED USE OF SUCH DEVICES MAY RESULT IN FIRE,
CARBON MONOXIDE POISONING, EXPLOSION, PROPERTY DAMAGE,
SEVERE PERSONAL INJURY OR DEATH.
The unit should be placed as close to the space to be air conditioned as possible allow-
ing clearance dimensions as indicated. Ducts should be run as directly as possible to
supply and return outlets. Use of non-flammable waterproof flexible connectors on both
supply and return connections at the unit to reduce noise transmission is recommended.
It is preferable to install the unit on the roof of the structure if the registers or diffusers
are located on the wall or in the ceiling. A slab installation could be considered when the
registers are low on a wall or in the floor.
On ductwork exposed to outside air conditions of temperature and humidity, use a mini-
mum of 2" of insulation and a vapor barrier. Distribution system in attic, furred space or
crawl space should be insulated with at least 2" of insulation with vapor barrier. One-half
to 1" thickness of insulation is usually sufficient for ductwork inside the air conditioned
space.
Balancing dampers should be provided for each branch duct in the supply system.
Ductwork should be properly supported from the structure.
When installing ductwork, consider the following items:
1. Noncombustible flexible connectors should be used between ductwork and unit to
reduce noise and vibration transmission into the ductwork.
2. When auxiliary heaters are installed, use noncombustible flexible connectors and
clearance to combustible material of 0" for the first 3 feet of discharge duct.
Clearance to unit top and side is 0".
VIII.FILTERS
This unit is provided with 2 - 25" x 16" x 1" (3-5 ton) 4 - 16" x 16" x 1" (6 ton) disposable
filters. When replacing filters, ensure they are inserted fully to the back to prevent
bypass.
IX. CONVERSION PROCEDURE
DOWNFLOW TO HORIZONTAL
1. Remove the screws and covers from the outside of the supply and return sections.
2. Install the covers in the bottom supply and return openings with the painted side up.
See Figure 15. Use the existing gasket to seal the covers.
3. Secure the supply cover to the base of the unit with 1 screw, engaging prepunched
tab in unit base.
4. Secure the return cover to the base of the unit with screws, engaging prepunched
holes in the unit base.
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