Engineer claims that variable speed control would not be economic with constant volume air handling system without installing minimum air controls on each box, which would allow decreased fan horsepower durning unoccupied hours.
To do so would involve approximately 5 year payback.
Surgery center...
Thanks EE.
I located some info. regarding pressure differential and air change requirements on the OSHPD site, but am still in the dark about having to run the 35 h.p of air handler 24/7.
I also have the P.E. whose company installed the EMS stopping by next week to hopefully shed some light on...
Greetings,
I recently had an E.M.S. system installed on the air handler/chiller utilized by (4) outpatient operating/recovery area rooms in southern Ca.
It was an upgrade to a previously pneumatically controlled constant volume supply/return/exhaust fan with v.a.v. reheat terminals system with a...
