528194-YTG-F-1210
GAS HEATING SECTION (IF EQUIPPED)
Heat exchanger and exhaust system shall be constructed of aluminized steel and shall be designed with induced draft com- bustion with post purge logic, energy saving direct spark igni- tion, and redundant main gas valve. The heat exchanger shall be of the tubular type, constructed of
a.Primary and auxiliary
b.Induced draft pressure sensor.
c.Flame roll out switch (manual reset).
d.Flame proving controls.
e.All two stage units shall have two independent stages of capacity (60% 1st stage, 100% 2nd stage).
ELECTRIC HEATING SECTION (IF EQUIPPED)
An electric heating section, with nickel chromium elements, shall be provided in a range of 9 thru 54 KW, offering two states of capacity all sizes. The heating section shall have a primary limit control(s) (automatic reset) to prevent the heating element system from operating at an excessive temperature. The Heat- ing Section assembly shall slide out of the unit for easy mainte- nance and service. Units with Electric Heating Sections shall be wired for a single point power supply with branch circuit fusing (where required).
UNIT OPERATING CHARACTERISTICS
Unit shall be capable of starting and running at 125 ºF outdoor temperature, exceeding maximum load criteria of ARI Standard 340/360. The compressor, with standard controls, shall be capable of operation down to 0 ºF outdoor temperature. Unit shall be provided with fan time delay to prevent cold air delivery before heat exchanger warms up. (Gas heat only)
ELECTRICAL REQUIREMENTS - All unit power wiring shall enter unit cabinet at a single factory provided location and be capable of side or bottom entry to minimize roof penetrations and avoid unit field modifications. Separate side and bottom openings shall be provided for the control wiring.
STANDARD LIMITED WARRANTIES - Compressor – 5 Years, Heat Exchanger – 10 Years, Elect. Heat Elem. – 5 Years, Parts – 1 Year
intake dampers shall not exceed 2% when dampers are fully closed and operating against a pressure differential of 0.5 IWG. A
•MOTORIZED OUTDOOR AIR DAMPERS – Outdoor and return air dampers that are interlocked and positioned by a
– regardless of the outdoor air enthalpy. Dampers return to the fully closed position when the indoor fan motor is
ADDITIONAL FACTORY INSTALLED OPTIONS
•ALTERNATE INDOOR BLOWER MOTOR – For applications with high restrictions, units are available with optional indoor blower motors that provide higher static output and/or higher airflow.
•Variable Air Volume (VAV) – The VAV option using a varible frequency drive (VFD) shall be available on
FACTORY INSTALLED OPTIONAL OUTDOOR AIR (Shall be made available by either/or):
•ELECTRONIC ENTHALPY AUTOMATIC ECONOMIZER
– Outdoor and return air dampers that are interlocked and positioned by a
•CONVENIENCE OUTLET
•ELECTRIC HEAT - Electric Heaters range from 9 kW to 54 kW and are available in all the voltage options of the base unit.
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