Agenda - 04-11-2000-5c - Laserfiche WebLink

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-g NCHFA HOUSZI~TG REHABILITATION PROGRAMS -- Energy Standards 5.D HVAC Systems. 5.]. Jf installation of a new heating and/or cooling system is indicated, the choice of a system must be based on efficiency of the. system and its appropriateness to the dwelling unit. The keys.to efficiency are ratings of systems (HSPF, AFLTE, SEER, etc.), groper sizing (number of BTUs per hour, etc.) and the quality of installation. New central heating systems must be sized in accordance with ACCA Manual J specifications and must never exceed the Manual ]' calculated size:. A copy of the sizing calculations shall be retained in client's case f le. 5.2 All central heating units installed with Program funds must have Annual Fuel Utilization Eff ciency (AFUE) ratings meeting the minimum efficiency levels set by the National Appliance Energy Conservation Act of 1987. 'I'kaese include: 1. Ducted Central Heating Equipment .................... 78% AFi7E 2. Mobile-Home Furnaces ..........:................. 7S% AFiJE 3. Wall Furnaces,,e 42,000 Btu/hr input .................. 73% AFLTE 4. Wall Furnaces, ~ 42,000 Btulhr input .......... . ....... 74% AFUE 5. Room Heaters, c 18,000 Btu/hr input .................. 57% AFUE 6. Room Heaters, 18,000-20,000 Btu/hr input ............... 58% AF'[JE 7. Room Heaters, 20,000-27,000 Btu/hr input ............... 63% AFUE 8. Room Heaters; 27,000-44,000 Btu/hr input ........ _ ..... 64% AFUE 9. ~ Room Heaters, ~ 46,000 Btu/hr input ... , .... ~ .......... 65% AFUE A11 new space/room heaters should be of the direct vented type. 5.3 Central air conditioners installed with Program funds must have a ~ minimum SEER (rating) of 9.7 far single package systems or 10.0 far split systems. 5.4 Heat pumps installed with Program funds must have a minimum HSPF of 6.8 from Raleigh east or 8.0 west of Raleigh and minimum SEER of 9.7 for single package systems or 10.0 for split systems. 5.5 New heat pumps and outside cooling units should be located in areas not subject to direct sunlight or heat buildup. 5.6 The delivery system ductwork should be designed in accordance with ACCA Manual D standazds ta: 1) avoid "spider system" design by use of a supply ~ - .. trunk/plenum; 2) size the return air duct far minimum noise; 3) Iocate intake centrally, near front door if possible; 4) strap all ductwork as needed to eliminate crimping or sharp bends in ducts; S) locate registers at perimeter portions of house; 6) use radius elbows or turning vanes in all supply trunks with 40 degree turns and not diminish the