Can a mechanically conditioned space be naturally ventilated? I mean, is this combination allowed by ASHRAE 62.1-2010 and ASHRAE 55-2010?

Dears, When we have a Naturally Ventilated Space, we can use an alarm to indicate that the openings are close. Someone know if I can use an light alarm? or I must use an sound alarm?

For a Multi-Fam Highrise, the corridors will be heated with a ducted roof-top gas furnace split dx system will be installed.

Referring to the FAQs fan-assisted ventilation in naturally ventilated spaces can be considered as mechanical ventilation.

The new calculator (v2009v4_Minimum IAQ Performance Calculator_v03) from the Resources tab, does not count the ‘Zone Outdoor Airflow’ (column N) and it shows 0,00 no matter what system and values w

Will compliance with the ASHRAE 62.1-2013 standard be acceptable for LEED v4 projects (even though the credit currently references ASHRAE 62.1-2010)?

Dear, I have one more question, please. In ASHRAE 62.1-2010 section 6.4.1 there is an explantion about floor area to be ventilated.

Hi, Our project is mechanically ventilated by 100% OA constant volume enthalpy heat recovery ventilator.

We are deciding between the use of EN 15251 and the use of ASHRAE 62.1. Do you have experience in applying EN 13779–2007?

Multiple identical RTUs combined with plenum ducts serve a whole building. How can I prepare 62.1 MZcal? Can I add up cfm of all RTUs and assume it like one system using one sheet?