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Checklist: Ventilation System

With the help of this checklist you can easily check whether everything around the ventilation system has been installed correctly.

  • Ventilation system:
  • Controllability: At least 3 operation modes (‘boost’ +30%, standard, basic -30%)?
    • Are all rooms ventilated, either by means of SUP, ETA or transfer air (also utility rooms, mechanical room itself etc.)?
    • Excessively low relative indoor air humidity (< 30%)? Countermeasures taken?
    • Sound level?
    • Draughts?
  • Ventilation unit:
    • Accessibility for maintenance checked?: Filters, condensate pan and drain, heat exchanger, summer bypass
    • Structure-borne sound decoupling of the ventilation unit?
    • Are silencers planned for SUP and ETA, possibly ODA and EHA?
    • Condensate drain with double siphon connected to drain pipe (check slope and filling level of siphons)?
    • Is frost protection temperature for pre-heating set to the point considered in the energy balance calculation (PHPP)?
    • If subject to frost (outside installation): Condensate drain heated and insulated?
    • Intermitted operation: Filter drying before switching off fans possible?
  • Filters:
    • ODA filter (at least F7): correctly mounted (check fit and air flow direction)?
    • ETA filter (F7/F8): correctly mounted (check fit and air flow direction)?
    • Do “pre-filter” and “grease filter“(kitchen) correctly fit in ETA?
    • Accessibility and maintainability of the filters possible?
  • Outdoor air (ODA) and Exhaust air (EHA):
    • ODA intake: Clean air (at least 3 m above ground, air pollution, odour sources)?; Protected from manipulation, rain, snow?
    • Avoid „short-circuiting“ between EHA and ODA (odours, direction of flow, distance)
    • Don’t direct EHA outlets at building assemblies (risk of condensation).
    • Outside wall penetrations: vapour tight? Thermally insulated? Connected to the airtight layer?
    • Unit within thermal envelope: ODA and EHA ducts insulated up to the insulation layer of the thermal envelope with at least 50 mm, thermal bridge free and vapour tight? Short duct length?
    • Unit outside thermal envelope: SUP and ETA ducts insulated up to the thermal envelope with at least 50 mm and thermal bridge free? Short duct length?
    • ODA and EHA valves accessible for cleaning and inspection?
    • Intermitted operation: Airtight ODA and EHA valves installed?
    • ODA and EHA air volume flow calibrated and imbalance lower than 10%? Information to be filled in the commissioning report.
  • Supply air (SUP) and extract (ETA) air ducts:
    • Structure-borne sound decoupling of the ventilation ducts?
    • Are supply air heating ducts sufficiently insulated?
    • Are supply air cooling ducts sufficiently insulated and vapour tight?
    • Do the ventilation ducts have a smooth interior surface?
    • Duct system with minimal pressure loss? Duct crossing avoided?
    • Are SUP and ETA ducts equipped with cross-talk silencers?
  • Supply (SUP), extract (ETA) and transfer air valves:
    • SUP and ETA air volume flows are adjusted as planned for each room? Information to be filled in the commissioning report.
    • Are the SUP and ETA valves and their adjustment documented? Information to be filled in the commissioning report.
    • Jet nozzles mounted approx. 15 cm below ceiling (from the middle of the jet)?
    • Are the openings for air transfer planned in all designated rooms (e.g. 1.5 cm door gap) (pressure loss of max. 1 Pa, check by measuring the air flow velocity (< 1m/s))?
  • Additional components:
    • Kitchen hood planned with recirculation air?
    • Kitchen hood planned with exhaust to outside? Additional supply air flow available? Not recommended for Passive Houses!
    • Safety equipment checked for combined operation with a wood stove (if applicable)?
    • Supply air heating coil tested (max. supply air temperature 52 °C, avoid dust smouldering).
    • Room temperature adjustable independently from SUP air flow rate?
  • Fire protection:
    • Fire and smoke safety dampers clean and operation checked?
  • Inspection of the subsoil heat exchanger:
    • Check ductwork for leaks (pressure test).
    • Check duct system for sloping (no unwanted basins)?
    • Drainage (condensate) by means of a double siphon.
    • Ensure accessibility (cleaning).

Checklist: Ventilation system for download

See also

Overview of Passipedia articles on ventilation

planning/building_services/ventilation/checklist_ventilation_system.1595346862.txt.gz · Last modified: 2020/07/21 17:54 by