MULTIBETON MWA MB Rolled Asphalt User Manual
- June 9, 2024
- MULTIBETON
Table of Contents
MULTIBETON MWA MB Rolled Asphalt User Manual
Applications
The MWA is a system for heating both industrial and outdoor areas. These areas
may be exposed to normal weather.
Load capacity and construction
On principle suitable for any traffic load. The entire construction is determined by the structural engineer. The structural engineer measures the requirements based on how the area will the used. This includes e.g. concentrated loads from parked vehicles and even their dynamic loads when approaching/leaving. The construction layout = shown below is merely an example. The location of the MB Euro system pipes (MB-ER17) are always based on the specifications of the structural engineer. The height reference point on the site which must be met must be checked to ensure the planned construction height is given throughout. When planning the construction the relevant laws, regulations, directives and standards.
System installation
Installation follows the MULTIBETON plan. Then follow the MULTIBETON
installation and technical guidelines. In addition, planning and installing
the MULTIBETON surface heating system must comply with the relevant laws,
regulations, directives and standards. Additional instructions of
manufacturers for other trades and the recognised rules of technology and
proper trade workmanship must be observed.
Substrate and base course
The ground must be able to support the rolled asphalt construction. Otherwise
an additional base course is required. Ideally, the entire area should have a
homogeneous mixture, good consolidation and drainage.
Water drainage
For outdoor applications it’s extremely important to properly drain off
condensate using drainage systems or slopes. The condensate must not collect
at the edge of the under-soil heating and form additional ice.
Frost control
Outdoors, the heating circuits must be filled with suitable antifreeze. The
antifreeze to heating water ratio depends on the total amount of fluid and the
lowest expected outdoor temperature.
System separation
Due to the water/antifreeze mixture in the under-soil system, the system is
connected to the heating system via heat exchangers. To prevent the heat
exchanger and the primary end from freezing if the heating system fails, e.g.
a thermostat should shut off the pump for the secondary circuit if the
temperature falls below the -3 °C limit.
Control
A suitable control must be installed to ensure the area is kept free from snow
and ice. This measures the air temperature, soil temperature and humidity
taking into account the system capacity and delay.