Description
BEST VALUE FOR MONEY & EASE OF COMMISSIONING STAIRWELL PRESSURE CONTROL SYSTEM
PRE-PROGRAMMED STAIRWELL / RELIEF FAN PRESSURE CONTROL SYSTEM c/w 9 DIFFERENTIAL PRESSURE SENSORS & SELECT MODULE
BASED ON HEVAC DPFC TRIPLE LOOP P+I CONTROLLER (PRESSURE CONTROL OF 2 STAIRWELLS & 1 RELIEF FAN ALL IN ONE CONTROLLER)
ADD or SUBTRACT $146 for more or fewer differential QBM2030 pressure sensors each (TRADE)
Meeting fire mode pressure & velocity requirements for both the stairwell & lobbies is often difficult to achieve, Hevac has further advanced our tried and proven program settings for stairwell pressure control by adding an automatic setpoint shift algorithm to greatly aid in satisfying the vastly different pressure requirements for stairwell doors open & closed and is giving great results on systems that otherwise couldn’t pass both the door velocity & door resistance pull tests, nobody else to our knowledge has come up with this innovation, so if you’ve ever experienced the frustration of trying to pass stairwell pressure & velocity tests don’t do the cheap method of connecting sensors straight to a VSD, not only is that going to prove difficult to test and trim at commissioning & years to come but gives poor control capability compared to a DPFC controller using this automatic setpoint shift method. The newly developed Hevac signal selector SCM220 can be used to control the relief fan based on the average speed of the two stairwell fans OR just used as a triple loop sensor signal selector with the relief fan pressure controlled by the 3rd loop in the DPFC.
1 x DPFC TRIPLE LOOP PRE PROGRAMMED PRESSURE CONTROLLER
1 X SCM220 TRIPLE LOOP SENSOR SIGNAL SELECTOR ( OPTIONAL USE RELIEF FAN CONTROL BASED ON STAIRWELL FAN SPEED or DONE BY 3RD CONTROL LOOP IN DPFC)
9 X QBM2030-1U DIFFERENTIAL PRESSURE SENSORS
AS WEVE GONE TO THE EFFORT TO COME UP WITH A TRIED & PROVEN BEST CONTROL SYSTEM POSSIBLE WE’D ALSO GREATLY APPRECIATE YOU BUYING THE DAMPER MOTORS FROM US AS WELL WHICH ONLY SEEMS FAIR TO US.
SPRING RETURN 24V DAMPER MOTORS
GQD121.1A 2NM S/R (>0.3SQM) DAMPER MOTOR $ 157.85 (TRADE PRICE) + GST
GPC121.1A 4NM S/R (>0.6SQM) DAMPER MOTOR $169.40 (TRADE PRICE) + GST
GMA121.1E 7NM S/R (>1.5SQM) DAMPER MOTOR $215.60 (TRADE PRICE) +GST
GCA121.1E 18NM S/R (>3SQM) DAMPER MOTOR $304.15 (TRADE PRICE) +GST
FOR PROJECT QUOTES CONTACT OUR ESTIMATOR SHAUN BARRY ON sbarry@hevac.com.au
VIEW DPFC Stairwell pressure controller PDF
NOTE : HEVAC WILL ONLY SUPPLY PRE-PROGRAMMED DPFC AS PART OF A COMPLETE STAIRWELL CONTROL SYSTEM
