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UL 555S Smoke Dampers and Fail-Safe Operation
Hi All, I am working on a retrofit job of a high rise condo building with an atrium where NC smoke dampers with electronic actuators are provided on exterior openings for atrium smoke exhaust system makeup air. The dampers are currently set to fail open during loss of normal power, which seems...- DenverFPE
- Thread
- Replies: 6
- Forum: HVAC/R engineering
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Booster Fire Pump without Jockey Pump
Hello All, I am working on a small facility project in which we are installing a wet pipe sprinkler system. In order to meet pressure/flow demands of the system, we are providing a small (750 gpm/50 psi) pump to supplement the available city water supply. I have concluded that we do not need...- DenverFPE
- Thread
- Replies: 4
- Forum: Pump engineering
