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, <br /> . . <br /> MANDATORY REQUKRE0NENTS ~ (Continued) <br /> �� R4un7�� ConUngoqu�mnn capacity. Con�gnn�equipment shall be selected so that its total capacity is not less <br /> �� than the calculated total load but not more than 1.1s times greater than the total load calculated according to the procedure selected in <br /> Section 4uo.7,v,the closest available size provided by the manufacturer's product lines.The corresponding latent capacity afthe <br /> equipment shall not bo less than the calculated latent load. <br /> The published value for 8HR|total capacity is a nominal,rating-test value and shall not b°used for equipment sizing,Manufacturer's <br /> expanded performance data shall be used to select cooling-only equipment.This selection shall be based on the outdoor design dry-bulb <br /> temperature for the load calculation(or entering water temperature for water-source equipment),the blower CFM provided by the expanded <br /> performance data,the design value for entering wet-bulb temperature and the design value for entering dry-bulb temperature. <br /> Design values for entering wet-bulb and dry-bulb temperatures shall be for the indoor dry bulb and relative humidity used for the load <br /> calculation and shall be adjusted for return side gains if the return duct(s)Is installed in an unconditioned space. <br /> Exceptions: <br /> 1. Attached single-and multiple-family residential equipment sizing may be selected so that its cooling capacity is less than the <br /> calculated total sensible load but not less than n0 percent oV that load. <br /> e. <br /> VVhempignodamdomdodbyaRohda-registemdanUinoer,inattachedsing|o'andmu|tipin-fami|yunhu.themmecityof <br /> equipment may bo sized in accordance with good design practice. <br /> R«no.r.1.2 Heating equipment capacity. <br /> �� B000��1'�1 Heat pumps. Heat pumpsizing shall � th <br /> e *menmao�ou|modaocv�mgtoGn�iun <br /> �� R4Oaz1.1,and the heat pump total cooling capacityshall not bo more than 1.10 times greater than the design cooling load even if <br /> the design heating load io1.10 times greater than the design cooling load. <br /> �7 R4no.�|.o.uE|notncmuatonceb/mavoo. Bc�hvresistance fumaueooh�|be sized xjmin4kwu/the design <br /> �� requirements calculated according to the procedure selected in Section R403.7.1. <br /> �l g4037.1'2.3 Fossil fuel heating equipment. The capacity of fossil fuel heating equipment with natural draft atmospheric bumers <br /> shall not be less than the design load calculated in accordance with Section R403.7.1. <br /> Fl n4ou�c1.a Extra capacity required for special occasions. Residences requiring excess cooling heating equipment capacity nnuo <br /> intermittent basis,such as anticipated additional loads caused by major entertainment events,shall have equipment sized or controlled to <br /> prevent continuous space cooling or heating within that space by one or more of the following options: <br /> 1. A separate cooling or heating system is utilized to provide cooling or heating to the major entertainment areas. <br /> 2. A variable capacity system sized for optimum performance during base load periods inutilized. <br /> �l 8400.0 Systems serving multiple dwelling units(Mandeuop0. Systems serving multiple dwelling units shall comply with Sections <br /> C4na and o4o4v|the|ECc--Commmdal Provisions in lieu of Section R400. <br /> �l B4uo�Snow melt and ice system ooutm|o0mand�on0 8nm*and ioe-no/Unguyo�ma.supplied thm � �through energy m th <br /> e�� shall include automatic controls capable of shutting off the system when the pavement temperature is above 50OF(1 01C),and no <br /> precipitation is failing and an automatic or manual control that will allow shutoff when the outdoor temperature is above 40*17(4.81C). <br /> �l Buon.1n Pools and permanent spa energy consumption<Mondator0. The energy consumption of pools and permanent spas <br /> shall bein accordance with Sections R4ou.1n.{ through R4no.1Ua. <br /> �l nun3.1o.1He� m �� . Thoo|oh � m opmwern,huexha\|b000ntm re <br /> adily �suon <br /> �� integral part of the heater mounted on the exterior of the heater,or external to and within 3 feet(914 mm)of the heater.Operation <br /> o[such switch shall not change the setting m the heater thermostat.Such switches shall bein addition me circuit breaker for the <br /> power m the heater.Gas-fired heaters shall not ba equipped with continuously burning ignition pilots. <br /> �] R403.10.2 Time switches. Time switches or other control methods that can automatically turn off and on according to a preset schedule <br /> shall bo installed for heaters and pump motors.Heaters and pump motors that have built-in time ow(itohon shall bo}n compliance with this <br /> vvuV*n. <br /> Exceptions: <br /> 1. Where public health standards require o+hnu,pump operation. <br /> u. Pumps that operate solar-and waste-haat+renmmry pool heating systems. <br /> a. Where pumps are powered exclusively from on-site renewable generation. <br /> �� H403.10.3Cwxo,u. Outdoor»omedovwmmingpools and ou� vapor-retardant <br /> �� the water surface ora liquid cover ur other means proven tv reduce heat loss. <br /> s000pbon' Where more than 70 percent of the energy for heating,computed over an operation season,is from site-recovered <br /> energy,such as from a heat pump or solar energy source,covers or other vapor-retardant means shall not be required. <br /> g4n31u��m*ondox-�m�poo|oouapuhoo�� /U|gas-and oi��mdpool and spa heommuh�|h�na minimum thermal <br /> Fl ' ' <br /> efficiency ofaupercent for heaters manufactured on or after nn1n.when tested in accordance with ANSI Z21.os.Pool <br /> heaters fired by natural o,LP gas shall not have continuously burning pilot lights. <br /> /2n1/201911:21AM snnrgyauuVe@USA 6u.02(Rav {)'BuReauo17Fecmh Edition(2m17) Compliant Software Page 4oxs <br />