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CONDENSATE DRAIN CONNECTION
Condensate Drain Connection
A 3/4" female NPT drain connection is supplied on the
end of the unit and bottom of the drain pan for condensate
piping. An external trap must be installed for proper
condensate drainage. Hand tighten drain fitting to the drain
connection.
DRAIN
CONNECTION
UNIT
FLEXIBLE
TUBING-HOSE
OR PIPE
A POSITIVE LIQUID
SEAL IS REQUIRED
Drain Connection
Install condensate drain trap as shown. Use 3/4" drain line
and fittings or larger. Do not operate without trap.
Horizontal Drain
Drainage of condensate directly onto the roof may be
acceptable; refer to local code. It is recommended that a
small drip pad of either stone, mortar, wood or metal be
provided to prevent any possible damage to the roof.
Vertical Drain
To use the bottom drain connection, remove the drain plug
from the bottom connection and install it in the horizontal
connection.
Cleaning
Due to the fact that drain pans in any air conditioning
unit will have some moisture in them, algae and fungus
will grow due to airborne bacteria and spores. Periodic
cleaning is necessary to prevent this build-up from plugging
the drain.
STARTUP, ADJUSTMENTS, AND CHECKS
HIGH VOLTAGE!
To avoid personal injury or death due to
electrical shock, bond the frame of this unit
to the building electrical ground by use of
the grounding terminal provided or other
acceptable means. Disconnect all power
before servicing or installing this unit.
2" MINIMUM
3" MINIMUM
WARNING
To prevent property damage or personal injury, do not
start the unit until all necessary pre-checks and tests
have been performed.
MOVING MACHINERY HAZARD!
To prevent possible personal injury or death, disconnect
power to the unit and padlock in the "OFF" position before
servicing fans.
Pre-Startup Instructions
On new installations, or if a major component has been
replaced, the operation of the unit must be checked.
Check unit operation as outlined in the following
instructions. If any sparking, odors, or unusual sounds
are encountered, shut off electrical power and recheck for
wiring errors, or obstructions in or near the blower motors.
Duct covers must be removed before operating unit.
The Startup, Adjustments, and Checks procedure provides
a step-by-step sequence which, if followed, will assure the
proper startup of the equipment in the minimum amount of
time. Air balancing of duct system is not considered part
of this procedure. However, it is an important phase of any
air conditioning system startup and should be performed
upon completion of the Startup, Adjustments, and Checks
procedure. The Startup, Adjustments, and Checks
procedure at outside ambients below 55°F should be
limited to a readiness check of the refrigeration system with
the required final check and calibration left to be completed
when the outside ambient rises above 55°F.
Temporary Heating Or Cooling
If the unit is to be used for temporary heating or cooling, a
"Startup, Adjustments, and Checks" must first be performed
in accordance with this manual. Damage or repairs due to
failure to comply with these requirements are not covered
under the warranty. After the machines are used for
temporary heating or cooling, inspect the coils, fans, and
motors for unacceptable levels of construction dust and dirt
and install new filters.
Contractor Responsibility
The installing contractor must be certain that:
• All supply and return air ductwork is in place,
properly sealed, and corresponds with installation
instructions.
• All thermostats are mounted and wired in
accordance with installation instructions.
• All electric power, all gas, hot water or steam line
connections, and the condensate drain installation
have been made to each unit on the job. These
main supply lines must be functional and capable of
operating all units simultaneously.
• All filters are in place.
9
CAUTION
WARNING
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