08-01-2022 Council Work Session Packet

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aluminum which shall be coated with a customer specified interior paint. The design of the system's covers shall provide quick access to washable air intake filters as well as easy access to other serviceable items. The air delivery plenums provide targeted airflow directly to the vehicle occupants. Six (6) adjustable louvers will provide comfort for the front seat occupants and ten (10) adjustable louvers will provide comfort for the rear crew occupants. The system shall be capable of producing up to 12 FPM of air velocity at all occupant seating positions. Separate front and rear blower motors shall be of brushless design and shall be controlled independently. It shall be capable of reducing the interior cabin air temperature from 122 ° F (+/- 3 ° F) to 80' F in thirty minutes with 50% relative humidity and full solar load as described in SAE J2646. The system shall also provide heater pull up performance which meets or exceeds the performance requirements of SAE J1612 as well as defrost performance that meets or exceeds the performance requirements of SAE J381. A gravity drain system shall be provided that is capable of evacuating condensate from the vehicle while on a slope of up to a 13% grade in any direction. The air conditioning system plumbing shall be a mixture of custom bent zinc coated steel fittings and Aeroquip flexible hose with Aeroquip EZ-Clip fittings. The overhead heater/defroster plumbing shall include an electronic flow control valve that re -directs hot coolant away from the evaporator, via a bypass loop, as the temperature control is moved toward the cold position. All defrost/heating systems shall be plumbed with one (1) seasonal shut-off valve at the front corner on the right side of the cab. There shall be one (1) additional seasonal shut-off valve located adjacent to the first valve for a total of two (2) shutoff valves, one (1) in each heater/defroster coolant hose. The cab must be tilted to access the shut-off valves. Any component which needs to be accessed to perform system troubleshooting shall be accessible by one person using basic hand tools. Regularly serviced items shall be replaceable by one person using basic hand tools. "The chassis manufacturer recommends that the overall climate system performance be based off third party testing in accordance with the Society of Automotive Engineering standards as a complete system. Individual component level BTU ratings is not an accurate indicator of the performance capability of the completed system. System individual component BTU ratings: • Air conditioning evaporator total BTU/HR: 82,000 • Air conditioning condenser total BTU/HR: 59,000 • Heater coil total BTU/HR: 98,000 Performance data specified is based on testing performed by an independent third party test facility using a medium four -door 10" raised roof cab equipped with an ISL engine. CLIMATE CONTROL DRAIN