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moet the bllowing miniumum e�cirncy: F:Iectric Water Heatcr e�cirncy>= 0.82 GF, 333 SL, Btu/h(if> 12 kW) <br /> 3. Insulation must bc providcd 6r the 5rst 8 i ofoutict piping 6r a constant tanperature nonrccireulating storagc system <br /> and 6r thc inlM pipc bctwcen thc sroragc tsnk and a hcat trap in a storagc systcm. <br /> � 4. Temperature wntrols must be provided thaz allow 6r storage temperatum adjustment fom 120 degree F or lower ro a <br /> maximum tcmperature compatible with thc intendcd use cxccpt whrn thc manuficturci's installation instructions <br /> spceify a higher minimum thermostat sMting to minimiae wndrnsation and rcsulting cartosion. Documentation of <br /> the inst�llation instructions must be providecl to be exempted inm this requimnent. <br /> 5. Heat traps must be provided on inlct and oudM vertical pipe risers serving sto�age walen c�aters and storrge tanks not <br /> having intcgral hunt traps and serving a nonrccirculating system. ficat traps must be installcd as close as ptactical to <br /> the storage tank. AcaTtable heat traps are eithcr a) a device s�eci5cally designed 6r the pumose or b)an anangemrnt <br /> oftubing that 6rtns a loop of 360 degrcc F, or c)piping that fom the point o(connedion to the waten c�ater(inlet or <br /> ouNM)incl,idcs a Icngth ofpiping ditrctod downwards be6re connoction to the vertiral piping ofthe supply water or <br /> hot water distribWion system. <br /> Grneric Requiremeuts: Must be mM by all systems to which the requiremenl is applicable <br /> I. Design heating and cooling loads 6r the building must be dMrnnined using procedures equivalent to those in <br /> Chaptcrs 27 and 28 ofthc ASHRAE Handbook ofFundama�tals or an approvod equivalrnt plalation pmoadure. <br /> 2. Theemostats controlling both heating and cooling must bc capable ofmaintaining a 5 degtee F deadband(a tange of <br /> temperatwe where no heating or cooling is provided). <br /> -Exception: Dcadband capability is not roqui�od ifthe thamastat does not have wtomatic changcover capabiliry <br /> bctwax�hpting and cooling. <br /> 3. The system or zone control must be a programmable thertnostat or other automatic wntrol meeting the Sllowing <br /> aiteriaa) capable ofsetting bxk temperature to 55 degree F during hqting end setting up to 85 degee F during <br /> coolingb) capablc ofau[omatically sdting back or shutting down systems during unoccupiod hours using 7 diff.irnt <br /> day schedulesc) have an�sible 2-hour occupant overtided) have a battery back-up caPable ofmaintaining <br /> pro�ammod scttings 6r at Icast 10 hours without power. <br /> ! -Exccption: A sMbxk or shutodwntrol is not rcquired on thrnnostats thal control systems scrving arcas that operatc <br /> 1 continuously. <br /> 4. All pipes srning spxe-condilioning systems must bc insulated as bllows: <br /> Hot watcr piping 6n c�ating syslems: <br /> 1 in. 6r pipes <=1 1/2-in. nominal diameter <br /> 2 in. Srpipes>1 1/2-in. nominal diamMcr. <br /> Chillod waz�, mfigcrant, and brinc piping systems: <br /> 1 in. insulation 6r pipes <_� 1/2-in. nominal diameter <br /> I 1/2 in. insulation brpipes>1 1/2-in. nominal diamcla. <br /> Stcam piping: <br /> 1 1/2 in. insulation Sr pipes<=1 I/2-in. nominal diamMer <br /> 3 in. insulation 6rpipes>1 1/2-in. nominal diameter. <br /> -Exception: Pipe insulation is not requircd br fu:tory-installod piping within HVAC equipment. <br /> -Exartion: Pipe insulation is not required Sr piping that conveys Auids having a design operating temp�rature range <br /> bMwcen 55 dcgrocs P and 105 dcgrccs F. <br /> -Exaption: Pipc insulation is not rcquired 6r piping that convcys Bwds that havc not bccn hcatcd or coolcd through <br /> the use of£�ssil 6cls or electric power. <br /> -Gxceptionr Pipe insulation is not rcquital 6r�unout piping not excoeding 4 t in Inigth and 1 in. in diameter <br /> bMwccn thc control valvc and IIVAC coil. <br /> 5. Service hot water piping, where ruyuind, must be insulated to I/2 in. ifpipe less than I.5 in. nominal diameter. <br /> Iargcr pipe must bc insulated to 1 in.. Pipc insulation will havc a conductivi:y ofless than 0.28 E3tu.in/(h-i2degrce <br /> F). <br /> 6. Temperature controlling mGns must be providal to limit the maximum tem�awre ofwater delivered fom lavatory <br /> 5uccts in public 5cility�rst�uoms ro 110 dcgrcc F. <br /> � 7. Whcre mnc h�ting and cooling arc rnnlrolled by separrte wne thcrmostats, mcans(such as limit swilches, <br /> mechanical stops, or, br DDC systcros, sodwarc progr.unming)must be provid«1 to prevrnt simultaneous heating and <br /> 14 <br /> � <br />