036-21359-001-B-0302
ELECTRICAL REQUIREMENTS
All unit power wiring shall enter unit cabinet at a single factory provided location and be capable of side or bot- tom 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
OPTIONAL OUTDOOR AIR (Shall be made available by either/or):
1ELECTRONIC ENTHALPY AUTOMATIC ECON- OMIZER - Outdoor and return air dampers that are interlocked and positioned by a fully-modulating,spring-return damper actuator. The maximum leak- age 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 potentiometer shall be pro- vided to adjust the outdoor and return air damper assembly to take in CFM of outdoor air to meet the minimum ventilation requirement of the conditioned space during normal operation. During economizer 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 com- pressor to economizer operation shall be provided by an integral electronic enthalpy control that feeds input into the basic module. The outdoor intake opening shall be covered with a rain hood that matches the exterior of the unit. Water eliminator/ filters shall be provided. Simultaneous economizer/ compressor operation is also possible. Dampers shall fully close on power loss.
2.DUAL INPUT DIFFERENTIAL ELECTRONIC ENTHALPY AUTOMATIC ECONOMIZER - Out- door and return air dampers that are interlocked 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 potentiometer shall be provided to adjust the outdoor and return air damper assembly to take in the design CFM of outdoor air to meet the mini- mum ventilation requirement of the conditioned
space during normal operation. During economizer 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 com- pressor to economizer operation shall be provided by two integral electronic enthalpy controls - one that senses outdoor air and one that senses indoor air. Both enthalpy sensors supply input to the logic module which modulates both sets of dampers for maximum economizer savings. The outdoor intake opening shall be covered with a rain hood that matches the exterior of the unit. Water eliminator/ filters shall be provided. Simultaneous economizer/ compressor operation is also possible. Dampers shall fully close on power loss.
3MOTORIZED OUTDOOR AIR DAMPERS - Out- door and return air dampers that are interlocked and positioned by a 2-position,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 potentiometer shall be provided to adjust the outdoor and return air damper assembly to take in the design CFM of outdoor air to meet the venti- lation requirements of the conditioned space during normal operation. Whenever the indoor fan motor is energized, the dampers open up to one of two pre-selected positions - regardless of the outdoor air enthalpy. Dampers return to the fully closed position when the indoor fan motor is de-ener- gized. Dampers shall fully close on power loss.
OTHER PRE-ENGINEERED ACCESSORIES AVAIL- ABLE
1.ROOF CURB - 14" high, full perimeter curb with wood nailer (shipped knocked-down).
2.BAROMETRIC RELIEF DAMPER - Contains a rain hood, air inlet screen, exhaust damper and mount- ing hardware. Used to relieve internal air pressure through the unit during economizer operation.
3.PROPANE CONVERSION KIT - Contains new ori- fices and gas valve parts to convert from natural to L.P. gas. One per unit required.
4.HIGH ALTITUDE - NATURAL GAS - Contains orifices required for applications between 2000 and 6000 feet altitude.
