Accession Number DE2012-1051902
Title Measure Guideline: Combination Forced-Air Space and Tankless Domestic Hot Water Heating Systems.
Publication Date Aug 2012
Media Count 42p
Personal Author A. Rudd
Abstract This guideline pertains to design and application guidance for combination space and tankless domestic hot water (DHW) heating systems (combination systems) used in residential buildings, based on field evaluation, testing, and industry meetings. As residential building enclosure improvements continue to drive heating loads down, using the same water heating equipment for both space heating and domestic water heating becomes attractive from an initial cost and space-saving perspective. This topic is applicable to single- and multifamily residential buildings, both new and retrofitted. Before committing to wide-scale implementation of such combination space and domestic water heating systems for high performance buildings, whether new or retrofit, design decisions and site conditions affecting performance, maintenance, and occupant acceptability should be well understood. Current performance rating procedures for this type of hot water heating system and its many variants are inadequate to provide convincing prediction of estimated savings. In order to be assured of meeting the Building America savings goals, and the persistence of those savings after installation, continued sharing of lab and field testing results is needed. The primary intended audiences for this guideline are: plumbing and heating designers and contractors, weatherization and building efficiency retrofit program managers, new construction building efficiency program managers, water heating equipment manufacturers, building research program managers, and energy policy and advisory staff.
Keywords Guidelines
Heating systems
Hot water
Implementation
Research program
Residential buildings
Retrofit
Space conditioning
Tankless
Test and evaluation
Water heating


 
Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 97J - Heating & Cooling Systems
89B - Architectural Design & Environmental Engineering
Corporate Author Building Science Corporation Industry Team, Somerville, MA.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1306
Contract Number KNDJ-0-40337-00

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