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CONDENSATE DRAIN PIPING
A condensate drain line (NPT) should be connected to the 3/4
inch drain connection provided on the evaporator access panel
end of the unit.
Pitch condensate drain downward, 1/4" per foot, away from
the unit to provide free drainage to convenient open drain
system. Avoid long horizontal runs.
CAUTION
1. Do not connect the drain line to a closed drain system.
2. Never terminate a drain connection within the return air
duct, platform or return plenum.
3. Pitch the drain line at least
drain pan.
4. If condensate drain connection is on the negative side of
the blower, a trap must be installed to ensure positive
drainage.
5. Condensate drain lines should not be reduced in size
from the connection size supplied.
6. The drain line should be insulated where necessary, to
prevent sweating and damage due to condensate
forming on the outside surface of the line.
7. Test condensate drain line with water before operating
system.
Condensate drain trap
The condensate drain must have a trap. Install condensate
drain trap as close to the unit as possible. Use 3/4" drain or
larger. Fill the trap with water before starting the unit to
avoid air being drawn through.
Follow local codes and standard piping practices when
running the drain line.
1 /4
" per foot away from the
9
ELECTRICAL CONNECTIONS
WARNING
BEFORE PERFORMING ANY WORK ON THIS EQUIPMENT,
POWER SUPPLY MUST BE TURNED OFF AT THE DISCONNECT
SWITCH TO AVOID THE POSSIBILITY OF SHOCK, INJURY,
DAMAGE TO EQUIPMENT OR DEATH.
WARNING
IMPROPER INSTALLATION OF THE ELECTRICAL WIRING OR
THE HEAT ASSEMBLY MAY RESULT IN FIRE, SERIOUS
PERSONAL INJURY, OR DEATH.
Electrical wiring and grounding must be installed in
accordance with local codes or, in the absence of local
codes, with the National Electrical Code ANSI/NFPA 70,
Latest Revision.
It is important that proper electrical power be available for
the unit. Voltage requirements are printed on the unit
nameplate.
Disconnect Switch
Provide an approved weatherproof disconnect either on the
side of the unit or within close proximity and within sight of
the unit.
Over Current Protection
The branch circuit feeding the unit must be protected as
shown on the unit rating plate.
Line Level Power Wiring
The power supply lines must be run in weathertight conduit
to the disconnect and into the bottom of the unit control
box. Provide strain relief for all conduit with suitable
connectors.
Provide flexible conduit supports whenever vibration
transmission may cause a noise problem within the building
structure.
For branch circuit wiring (main power supply to unit
disconnect), wire size for the length of run should be
determined using the circuit ampacity found on the unit
nameplate and the N.E.C.
For more than 3 conductors in a raceway or cable, see the
N.E.C. for derating the ampacity of each conductor.
GROUNDING:
THE
UNIT
GROUNDED IN ACCORDANCE WITH LOCAL CODES OR THE
NATIONAL ELECTRIC CODE.
Low Voltage Control Wiring
Wire low voltage in accordance with wiring label on the
blower. Use no.18 AWG wire to make the low voltage
connections between the thermostat, the unit, and the
outdoor equipment.
If the thermostat is located more than 100 feet from the
unit use 16 AWG wire. All wiring must be NEC Class 1 and
must be separated from incoming power leads.
MUST
BE
ELECTRICALLY
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