Install Instructions

IM-PR 566442 1114 (Design Manual)
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2 Residential Radiant Heating Considerations
The basic principles of residential radiant heating
design are contained in Section 1, Principles of
radiant heating design. This section contains
additional information related specifically to
residential applications.
2.1 Codes and standards
Relevant codes and standards that may apply to
residential radiant applications are listed in Table
2-1, according to topic. While not all of these codes,
standards or green building programs apply to all
jurisdictions, contractors should still be familiar with
the minimum design practices that they encourage.
As an example, the 2009 International Residential
Code requires that a Manual J heating load calculation
be performed when sizing heating equipment for
new residential construction and also identifies the
insulation levels required for heated slabs.
Legend:
CSA B214 – Installation Code for Hydronic
Heating Systems
ACI 318 – Building Code Requirements for
Structural Concrete and Commentary
Residential Design Consideration Up to 3 Stories
Multifamily over 3
Stories
All
IRC NGBS Manual J CSA B214 ASHRAE 90.1 ASHRAE 189.1 ASHRAE / ACCA 183 IMC IIECC ASHRAE 55 ACI 318 LEED
Loop balancing X X X X
System controls X X X X X X X
Credit for radiant energy savings X X X X X
Distribution system installation or
specication
X X X X
Insulation X X X X X X X
Load calculation X X X X X X X X
Circulating pumps X X X
Radiant heating requirement for
unenclosed spaces
X X
Snow melt X X X X X X
Designing for comfort X X X X
Peak load reduction X
Table 2-1 Radiant design considerations as addressed by residential national model codes, standards and
green building programs. Check with your local jurisdiction for applicability.
ASHRAE 90.1 – Energy Standard for
Buildings Except Low-Rise
Residential Buildings
ASHRAE 55 – Thermal Environmental Conditions
for Human Occupancy
ASHRAE 189.1 – Standard for the Design of High
Performance, Green Buildings
ASHRAE/ACCA 183 – Peak Cooling and Heating
Load Calculations in
Buildings Except Low-Rise
Residential Buildings
IECC – International Energy Conservation Code
IMC – International Mechanical Code
IRC – International Residential Code
LEED – The United States Green Building
Council’s Leadership in Energy and
Environmental Design program, which
serves as one of the most widely
recognized green building programs
Manual J – Air Conditioning Contractors of
America’s Manual J Residential Load Calculation
NGBS – National Green Building Standard