Hi
1. Stair press fans - I know smoke exh fans have to be fire rated but does this extend to stair press fan operating in fire mode?
2. Is it ok to provide unconitioned and unfiltered outside air to a FM office being condtioned by a Split AC?
Would appreciate your advice
Regards
1. Stair press fans - I know smoke exh fans have to be fire rated but does this extend to stair press fan operating in fire mode?
2. Is it ok to provide unconitioned and unfiltered outside air to a FM office being condtioned by a Split AC?
Would appreciate your advice
Regards
source https://hvac-talk.com/vbb/showthread.php?2226637-Couple-of-newbie-technical-queries&goto=newpost
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