List of standards and methods used for sizing and calculations

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


Heating load calculations of buildings

Thermal calculations of walls

  • PN EN ISO 6946, PN EN ISO 13370

Heating load calculations

  • EN 12831:2003
  • DIN EN 12831:2008-07
  • PN EN 12831:2006
  • ÖNORM EN 12831; ÖNORM H 7500-1:2015

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

Design of dry system boards arrangement

  • As for the RADIANT SYSTEMS DESIGN

Radiator sizing

  • thermal calculations in accordance with EN 442-2
  • methods of selecting the size of the radiator - proprietary method
  • accessories including housing, power supply and location - COBRTI Instal guidelines, information from manufacturers
  • flow adjustment (correction) - proprietary method.

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

Tap water installations

Calculation of design flow rates

  • DIN 1988
  • DIN 1988-300:2012-05
  • PN-92/B-01706
  • EN 806-3:2008

Pipeline network calculations

  • Hydraulic calculations - Darcy and Colebrook equations
  • Diameters sizing - maximum velocity criterium
  • Heat loss in pipelines - according to professional literature
  • Pipeline insulation sizing - EnEv (German) or WT2008 (Polish) recommendations

Circulation network calculations

  • Diameters sizing - maximum velocity and maximum R criteria
  • Hydronic balancing - proprietary method

Ring systems calculations

  • Proprietary method using Cross method and DIN 1988-300 recommendations

Calculations of warm water output time

  • Proprietary method considering Swiss guidelines
  • Evaluation of results according to VDI 6003 or DIN 1988-200
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