Laserfiche WebLink
CalJ �Aw ' Job Name:Pep Boys#0528 <br /> e Prepared For:Refrigeration Unlimited <br /> HEATING • Aia coN oinoNiNc Unit Tag:YSJ240A4SOM00 <br /> Quantity:1 <br /> Gas Heating Section <br /> -The heating section shall have a progressive tubular heat exchanger with corrosion-resistant <br /> aluminized steel tubes and burners as standard on all models. <br /> -Stainless steel heat exchanger with 409 stainless steel tubes and 439 stainless steel burners shall be <br /> optional. <br /> -Induced draft combustion blower shall be used to pull the combustion products through the firing <br /> tubes. <br /> -Heater shall use a direct spark ignition (DSI) system. <br /> -On initial call for heat, the combustion blower shall purge the heat exchanger for 20 seconds before <br /> ignition. <br /> -After three unsuccessful ignition attempts, entire heating system shall be locked out until manually <br /> reset at the thermostat/zone sensor. <br /> -Units shall be suitable for use with natural gas or propane (field-installed kit). <br /> Heat Exchanger <br /> -Compact cabinet features a tubular heat exchanger in low, medium and high heat capacities. <br /> -Corrosion-resistant aluminized steel tubes and burners are standard on all models. <br /> -Induced draft blower to pull the gas mixture through the burner tubes. <br /> -Direct spark ignition and a flame sensor as a safety device to validate the flame. <br /> Indoor Fan <br /> - Direct drive plenum fan design - 6 to 25 tons units. <br /> - Plenum fan design - backward-curved fan wheel along with an external rotor direct drive variabl <br /> e speed indoor motor. <br /> - Supply fan speed adjustments can be made using the Symbio 700 or Mobile App. <br /> - Motors are thermally protected. <br /> - Variable speed direct drive motors are high efficiency - 6 to 25 tons. <br /> Powered Exhaust <br /> -Available for 6 to 25 ton units. <br /> -Shall provide exhaust of return air, when using an economizer. <br /> -Maintain better building pressurization. <br /> Reference or Comparative Enthalpy <br /> -Reference enthalpy used to measure and communicate outdoor humidity. <br /> -Unit receives and uses information to provide improved comfort cooling while using the economizer. <br /> -Comparative enthalpy measures and communicates humidity for both outdoor and return air <br /> conditions, and return air temperature. <br /> -Unit receives and uses information to maximize use of economizer cooling, and to provide maximum <br /> occupant comfort control. <br /> -Reference or comparative enthalpy available when a factory or field installed downflow economizer <br /> ordered. <br /> 2023/12/08 21:55:09 Page 10 of 10 <br />