PRE-PROGRAMMED STAIRWELL PRESSURE CONTROLLER c/w 8 DIFFERENTIAL PRESSURE SENSORS & SELECT MODULE c/w RELIEF FAN OUTPUT SIGNAL CONDITIONING
BASED ON SIEMENS RLU222 P+I CONTROLLER IS THE SYSTEM OF CHOICE BY MAJOR CONTRACTORS & with settings we’ve perfected, we feel its the best stairwell control system available.
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 RLU2.. series controller using this automatic setpoint shift method. The newly developed Hevac signal selector SCM220 also incorporates relief fan control output trimming capability with START, GAIN, MIN & MAX adjustments to greatly increase the ability to fine tune the relief fan speed to better match system dynamics.
1 x RLU222 DUAL LOOP PRE PROGRAMMED PRESSURE CONTROLLER
1 X SCM220 DUAL SENSOR SIGNAL SELECTOR + RELIEF FAN CONTROL
8 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 $ 146 (TRADE PRICE) + GST
GPC121.1A 4NM S/R (>0.8SQM) DAMPER MOTOR $162 (TRADE PRICE) + GST
GMA121.1E 7NM S/R (>1.5SQM) DAMPER MOTOR $203 (TRADE PRICE) +GST
GCA121.1E 18NM S/R (>3SQM) DAMPER MOTOR $237 (TRADE PRICE) +GST
LINK to SCM220 data sheet
NOTE : HEVAC WILL ONLY SUPPLY PRE-PROGRAMMED RLU’s
AS PART OF A COMPLETE STAIRWELL CONTROL SYSTEM