Complete Plumbing and Central Heating Guide by Jacson, Day

By Jacson, Day

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Since demand must be calculated using a worstcase scenario, and weekend consumption is known to be greater for multifamily buildings than weekday consumption, the effect of the seasonal influence is best seen in terms of weekend consumption. 2 Source: Goldner and Price 1994, p. 107. in the summer and that (particularly in colder climates) the cold water to be mixed down is considerably cooler in winter and requires greater volumes of DHW. The variance can account for as much as a 45% reduction in demand from winter to summer.

Facilitating submetering implementation. Report No. 96-7. Prepared for New York State Energy Research and Development Authority. 26 Domestic W ater Heating Design Manual, Second Edition Water maximum probable occupancy, which may never actually occur. 2), which in reality only occur a limited number of times during the year. Even if the system were not able to satisfy those loads, the result would be occupants experiencing slightly lower-temperature hot water at their taps for some short duration of time.

6. National Sanitation Foundation (NSF) listing. 7. AGA approval for gas burning components. Fundamentals of Domestic W ater Heating Water 17 8. National Fire Protection Association (NFPA) standards. 9. National Electrical Code (NEC). In addition, the federal government, the agencies with jurisdiction over public schools and public housing, and many other agencies have specific requirements that must be observed when designing projects and selecting equipment for them. SYSTEM ALTERNATIVE CONSIDERATIONS The design and selection of water heating systems are part of a process that involves assumptions, decisions, and trade-offs.

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