Antechamber pressure delivery outlet normally closed pressure delivery outlet Sheng Lu HVAC

Positive pressure blower is pointing escape corridor air supply fan. It outdoor air pressure into the interior. When the building is on fire, it will produce a lot of smoke, carbon monoxide and other toxic gases and block the line of sight, through positive pressure blower air to escape the fire stairs, indoor smoke can not reach the stairs, to create conditions for people to escape. Positive pressure blower is pointing escape corridor air supply fan. It outdoor air pressure into the interior. When the building is on fire, it will produce a lot of smoke, carbon monoxide and other toxic gases and block the line of sight, through positive pressure blower air to escape the fire stairs, indoor smoke can not reach the stairs, to create conditions for people to escape. Positive pressure blower is typically mounted on top of the building, and the layers of the positive pressure valve linkage. Initial fire damper open, start positive pressure blower, so stairwells, elevator hall in positive pressure (blowing state). First, the product selection of outlet pressure points 1. The main control parameters for the selection of specifications. 2. The selection of outlet pressure should pay attention to its features, such as automatic open and close, open and close manually, manual reset, signal output, remote control and other requirements. Second, the construction, installation points 1. Install the operating mechanism must be checked before the air is intact, the action is flexible and effective. Third, the implementation of the standard product standards JG / T14-1999 "ventilation and air conditioning vents" JG / T20-1999 "air distribution performance test methods" engineering standards GB50045-95 "fire protection design of tall buildings" GB50016-2006 "architectural design code for fire protection "GB50243-2002" Ventilation and Air Conditioning Engineering Construction Quality Acceptance "Fourth, the relevant standard atlas K103-1 ~ 3" building smoke control system design and equipment selection and installation of accessory "(bound volumes)