Generally a heating load calculation acc. to DIN EN 12831 or a cooling load calculation acc. to VDI 2078 has to be performed before designing the aquatherm-climasystem.

Heating

For comfort reasons the surface temperatures should not exceed 35°C.

The efficiency (heat flux density) for the dimensioning of the aquatherm-

climasystem has to be calculated by the formula below:

QAusl = QH : Af

QAusl = Dimensioning of heat flux density

QH = Thermal output acc. to DIN EN 12831

less the loss of transmission heat

by the components covered by wall heating

Af = Wall surface, covered with wall heating

Diagrams

The following performance diagrams for the aquatherm wall and

ceiling heating in wet and dry construction method have to be taken into

consideration. These diagrams are valid for:

1.) Wet-construction system with heating plaster with thermal conductivity

Lambda = 0,70 W/mK (e.g. gypsum plaster, lime gypsum plaster)

Lambda = 0,87 W/mK (e.g. cement plaster)

as well as plaster coverings from upper edge heat pipe -> 10 mm

2.) Dry-construction system (performance diagram for the dry construction system is valid for concealing with plaster board) Lambda = 0,21 W/mK

Standards and guidelines

The following standards and guidelines must be considered on planning and design of the aquatherm-climasystem:

VDI 2078 cooling load calculation / EnEV 2/02 Energy saving law

DIN EN 1264 Surface heating systems / DIN 1186 Construction gypsums

DIN 4102 Fire protection in building construction / DIN 4108 Heat Insulation in building construction / DIN 4109 Sound Insulation in building construction / DIN EN 12831 Calculation of the standard heating load / DIN 1264 Hot water under-floor heating / DIN 4726 Conduits of plastic / DIN 18164 Foam plastics / DIN 18165 Fibre insulating materials / DIN 18180 Gypsum plaster boards / DIN 18181 Gypsum plaster boards in building construction / DIN 18182 Accessories for the processing of

plaster boards / DIN 18195 Building sealing / DIN 18202 Dimension tolerances in building construction / DIN 18350 Plastering works and stucco works / DIN 18557 Mortar / DIN 18550 Plasters

(Individual processing guidelines of the respective manufacturer)