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REV: 04-29-25 LF <br />The system shall be capable of producing up to 12 FPM of air velocity at all occupant seating <br />positions. Separate front and rear blower motors shall be of brushless design and shall be <br />controlled independently. It shall be capable of reducing the interior cabin air temperature from <br />122˚ F (+/- 3˚ F) to 80˚ F in thirty minutes with 50% relative humidity and full solar load as <br />described in SAE J2646. <br />The system shall also provide heater pull up performance which meets or exceeds the <br />performance requirements of SAE J1612 as well as defrost performance that meets or exceeds <br />the performance requirements of SAE J381. <br />A gravity drain system shall be provided that is capable of evacuating condensate from the vehicle <br />while on a slope of up to a 13% grade in any direction. <br />The air conditioning system plumbing shall be a mixture of custom bent zinc coated steel fittings <br />and Aeroquip flexible hose with Aeroquip EZ-Clip fittings. <br />The overhead heater/defroster plumbing shall include an electronic flow control valve that re- <br />directs hot coolant away from the evaporator, via a bypass loop, as the temperature control is <br />moved toward the cold position. <br />Any component which needs to be accessed to perform system troubleshooting shall be <br />accessible by one person using basic hand tools. Regularly serviced items shall be replaceable <br />by one person using basic hand tools. <br />**The chassis manufacturer recommends that the overall climate system performance be <br />based off third-party testing in accordance with the Society of Automotive Engineering <br />standards as a complete system. <br />Individual component level BTU ratings is not an accurate indicator of the performance <br />capability of the completed system. System individual component BTU ratings: <br />•Air conditioning evaporator total BTU/HR: 82,000 <br />•Air conditioning condenser total BTU/HR: 59,000 <br />•Heater coil total BTU/HR: 98,000 <br />Performance data specified is based on testing performed by an independent third-party <br />test facility using a medium four-door 10” raised roof cab equipped with an ISL engine. <br />CLIMATE CONTROL DRAIN <br />The climate control system shall include a gravity drain for water management. The gravity drain <br />shall remove condensation from the air conditioning system without additional mechanical <br />assistance. <br />CLIMATE CONTROL ACTIVATION <br />The heating, defrosting and air conditioning controls shall be in the center dash center switch <br />panel, in a position which is easily accessible to the driver. The climate control shall be activated <br />by a rotary switch. <br />ATTY/AGR.2025.089/Fire Apparatus Solutions (Purchase of Spartan-LTC 105' TDA) (Page 55 of 150)