planning:building_services:ventilation:checklist_ventilation_system
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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 (at least G4): 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).
See also
Overview of Passipedia articles on ventilation
planning/building_services/ventilation/checklist_ventilation_system.1660571480.txt.gz · Last modified: 2022/08/15 15:51 by gergina.radeva@passiv.de