255040-YTG-A-0506
Unitary Products Group
41
STANDARD LIMITED WARRANTIES
•
Compressor 5 Years
•
Heat Exchanger 10 Years
•
Electric Heat Element 5 Years
•
Other Parts 1 Year
OPTIONAL OUTDOOR AIR
(Shall be made available by
either/or):
•
ELECTRONIC ENTHALPY AUTOMATIC ECONO-
MIZER
- Outdoor and return air dampers that are inter-
locked and positioned by a fully-modulating, spring
return damper actuator. The maximum leakage rate for
the outdoor air intake dampers shall not exceed 2%
when dampers are fully closed and operating against a
pressure differential of 0.5 IWG. A unit-mounted potenti-
ometer shall be provided to adjust the outdoor and return
air damper assembly to take in CFM of outdoor air to
meet the minimum ventilation requirement of the condi-
tioned space during normal operation. During econo-
mizer operation, a mixed-air temperature control shall
modulate the outdoor and return air damper assembly to
prevent the supply air temperature from dropping below
55°F. Changeover from compressor to economizer oper-
ation shall be provided by an integral electronic enthalpy
control that feeds input into the basic module. The out-
door intake opening shall be covered with a rain hood
that matches the exterior of the unit. Water eliminator/fil-
ters shall be provided. Simultaneous economizer/com-
pressor operation is also possible. Dampers shall fully
close on power loss.
OTHER PRE-ENGINEERED ACCESSORIES AVAILABLE
•
ROOF CURB
- 14"and 8” high, full perimeter curb with
wood nailer (shipped knocked-down).
•
BAROMETRIC RELIEF DAMPER
- Contains a rain
hood, air inlet screen, exhaust damper and mounting
hardware. Used to relieve internal air pressure through
the unit.
•
PROPANE CONVERSION KIT
- Contains new orifices
and gas valve parts to convert from natural to L.P. gas.
One per unit required.
•
HIGH ALTITUDE - NATURAL GAS
- Contains orifices
required for applications between 2000 and 6000 feet
altitude.
•
HIGH ALTITUDE - PROPANE GAS
- Contains orifices
required for applications between 2000 and 6000 feet
altitude. Must be used with propane conversion kit.
•
LOW NOX
- Required to reduce the emission of nitrogen
oxides below 40 nanograms per joule.
•
GAS PIPING
- Contains 1/2” pipe nipples, fittings and
gas cock (including panel assess gaskets) required for
bottom gas supply connection with external shut off.
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POWER EXHAUST OPTION
- To work in conjunction
with economizers.
•
ELECTRIC HEATERS
•
ECONOMIZER/MOTORIZED DAMPER RAIN HOOD
-
Contains all hood panels and the hardware for assem-
bling.
•
MANUAL OUTDOOR AIR DAMPER
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COIL GUARD KIT
- Guard for condenser coil.
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HAIL GUARD
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FLUE EXHAUST EXTENSION
•
TECHNICOAT PHENOLIC COATED CONDENSER
COIL
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ELECTRONIC SINGLE ENTHALPY ECONOMIZER