List of standards and methods used for sizing and calculations

Product	InstalSystem 5
Type of article	PRODUCT INFORMATION
Source for translation	2020-01-17

Heating and cooling installations

Radiant systems design

• Supply temperature optimization - proprietary method
• Thermal calculations for wet (pipe in screed) and dry systems (heating and cooling):
  • EN 1264 with the update to EN 1264-2/A1:2012-06 taking into account laminar flow in the calculations
  • DIN 4725-200 for increased screed thicknesses
  • National / manufacturer requirements saved in the system catalog

• Thermal calculations of panel systems:
  • EN 1264 with the update to EN 1264-2/A1:2012-06 (heating and cooling)
  • EN 14037 (heating)
  • EN 14240 (cooling)

• Hydraulic calculation of panel systems:
  • Zehnder's proprietary method for Zehnder steel radiators
  • standard formulas (Darcy and Colebrook formulas) for other panels

Pipeline network calculations

• Hydraulic calculations - Darcy and Colebrook equations
• Diameter sizing - R_max and v_max criteria
• Hydraulic balancing - proprietary method
• Heat loss in pipelines - according to professional literature
• Pipeline insulation sizing - EnEv (German) or WT2008 (Polish) recommendations, depending on the market-language version

Designing installations with flat stations

• dimensioning of the primary network supplying flat stations, taking into account non-simultaneous demand of the medium for domestic hot water preparation in a plate heat exchanger, according to the TU Dresden or DIN 1988-300 method (the second one requires the water system calculation module in the package configuration)

Balancing the installation with predefined control loops

• according to the manufacturer's guidelines