Install Instructions

77
IM-PR 566442 1114 (Design Manual)
For installations > 10,000 ft
2
that have large, open
spaces and simple geometry, Viega’s Climate
Mat can be specified to increase the affordability
and labor-efficiency of the installation. Unlike
typical radiant tubing installations, which require
that individual lengths of tubing be extended and
attached to a sub-base, Climate Mat is a tubing
module that permits the installer to simply roll
out as many as six equivalent lengths of tubing
simultaneously.
Advantages over typical installations include:
• Reduced installation time
• Patent-pending tubing securement method
guarantees desired tubing spacing
• Pre-pressurized tubing eliminates downtime
• Pre-engineered design takes the guesswork
out of installation
• No balancing needed due to same circuit
lengths
Typical applications include:
• Agricultural buildings
• Airports and hangars
• “Big box” retail
• Car dealerships
• Convention centers
• Garages
• Lobbies
• Museums
• Places of worship
• Snow melt
• Turf conditioning (e.g., dairy farms, athletic
fields)
• Warehouses
• Office buildings
• Strip malls
While Climate Mat is made to cover large areas,
you can still achieve a high degree of climate
control in your spaces, since each module can
be individually zoned. Individual zoning of mats
is not necessary in most applications but may be
desirable along perimeters in very cold climates
or where there is a large amount of windows. For
example, heating capacity of the Climate Mat is
typically limited to ~35 Btu/hr•ft
2
in areas intended
for human occupancy, but this may be increased to
over 50 Btu/hr•ft
2
along the perimeter of a building.
Climate Mat is typically installed to provide floor
heating and/or cooling but can also be installed
in the ceiling or walls. Complete installation
instructions for Climate Mat, including cross-
sectional illustrations, layout planning guidance
and installation tips, can be found in Appendix F.
Appendix F addresses floor applications only;
contact Viega if your application requires a ceiling
or wall installation.
3.5 Commercial radiant heating
See Section 1, Principles of radiant heating
design, for basic principles of heating that apply
to commercial and residential installations.
Considerations for special applications, such as
turf conditioning, freezer slabs, hockey rinks, etc,
are provided in Table 3-5 of this section.
When working with commercial jobs, there is
greater opportunity for increasing system efficiency
through supplying heat at lower temperatures.
At lower supply temperatures, designers can
take advantage of specifying high-efficiency or
renewable-energy central heating plants. Options
include: ground source heat pumps, solar water
heating, waste heat capture and using one or
more high-efficiency, modulating boilers. Pairing
one or more of these systems with a constant-
or variable-speed pump and modulating supply
water temperature via a reset control will lead
to a very efficient design that also reduces the
likelihood of overshooting thermostat set point.
(See Section 1.12, Controlling the system, for
more information.) To maximize efficiency and
comfort in a commercial heating system, specify
variable-speed circulators and allow for variable
temperature delivery with a reset control.