2025-127-E-AMS-Comfort Systems USA (Mid Atlantic) LLC-Sportsplex Pool HVAC Unit Replacement

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OC Sportsplex Pool HVAC Unit Replacement PDC Project 23022 Pool Dehumidification Unit 23 84 16 - 5 B.Auxiliary air heating coil tubes,fins,headers,casing and end-plates shall be fully protected by a polyester/enamel coating for maximum corrosion protection.The protective coating shall comply with ASTM B117/D1654 and ASTM D2126 for corrosion resistance against common acids,salts and gases C.Coil casing and end-plates shall be made of galvanized steel D.Fin and tube joints shall be mechanically bonded to ensure high heat transfer E.Fins shall be made of aluminum F.Tubes shall be made of copper G.The maximum loop operating pressure shall not be less than 250 psig 2.10 RETURN AND OUTSIDE AIR FILTERS A.The evaporator and reheat condenser coil shall each be protected with a separate upstream air filter system.The filters shall be laminated polyester construction,replaceable type.The filters shall have a non-migrating tackifier encapsulated between the second and third laminates.They shall be totally non-toxic,non-allergenic and will not support the growth of bacteria and fungus. B.The filter shall be 2 inch thick,MERV 13 rated. 2.11 DAMPERS MOTORS SHALL BE WEATHER PROOF WITH GORETEX VENTS AND AUTO CLOSE- ON-POWER FAILURE. A.MIXING BOX 1.The mixing box shall be integral to the unit and physically located between the evaporator and reheat condenser coils.The mixing box shall be equipped with three dampers to control the amount of exhaust,outside and re-circulated air.The exhaust damper shall be downstream of the evaporator coil to allow full heat reclaim prior to the being exhausted.The reheat condenser coil shall be located downstream of the outside air intake to allow utilization of outside air when available or necessary.The damper motors shall have NEMA 2 housing with GoreTex vents and auto close on power failure and shall use a brushless DC motor. 2.12 DAMPERS A.Dampers shall be opposed blade,less than 1%leakage,neoprene tipped,anodized-aluminum air foil cross-section dampers.Each damper section shall be operated by a separate motor,factory mounted and wired into the unit control panel and be capable of modulating the dampers from 0- 100%. 2.13 FANS (BLOWERS) A.Unit shall be factory equipped with all required fans.The fans shall be sized per the airflow and external static pressure resulting in the horsepower shown on the equipment schedule.Fans shall be balanced to ensure room negative pressure in the natatorium per the scheduled conditions. These fans shall be multi-V-belt driven,double-inlet centrifugal-type with multi-blade wheels. Construction shall be galvanized steel,painted and baked with an epoxy coating providing a chlorine and pool chemistry resistant finish.The fans shall be dynamically and statically balanced and tested on the shafts.Fan bearings shall be grease-lubricated,self-aligning ball bearings selected for 200,000 hours average life. B.Fan shall be multi-V-belt driven,double-inlet centrifugal-type with multi-blade wheels.The blower scroll and housing shall be constructed of cold-rolled steel,coated with an electrostatically applied TGIC polyester paint on G90 galvanized steel.The wheel shall be dynamically and statically balanced and tested on the steel shafts.The fan bearings shall be grease lubricated,self-aligning ball bearings selected for 200,000 hours average life. 2.14 FAN (BLOWER)MOTORS A.Fan motor shall be NEMA premium efficiency,totally enclosed,fan-cooled TEFC,with Class F insulation,pre-lubricated ball bearings and mounted on an adjustable base.Motor efficiency shall comply with EPACT-92 requirements as a minimum.Motor to be U.L.listed.Fan motor shall be provided with a factory-mounted and wired motor/starter protector with an adjustable thermal overload and magnetic short circuit protection. Docusign Envelope ID: D4F3B98E-0756-4A0C-A3AD-05AA32D39F1C