Centrifugal Box Fan
- Standard size 250mm
- Air volume flow rates up to 0.313 m3/s
- Static pressures up 628 Pa
- Suitable for operating temperatures up to +60℃
- Available in EC
Features and Benefits
Each unit is acoustically lined internally with Class O rated (BS 476 Parts 6 and 7) fire resistant acoustic foam lining minimising breakout noise levels.
Integrated commissioning control allowing single speed selection and also limiting maximum speed if used with an external potentiometer.
Ideal for very shallow ceiling voids or where space is at a premium.
High efficiency low tonal noise backward curved centrifugal impellers are directly driven by an EC external rotor motor. They provide low specific fan powers and stepless speed control without tonal noise generation.
EC motors providing precise speed control via potentiometer, BMS or Elta Fans DCV control. Reduced fan speed can provide significant cost-savings through lower energy consumption in both mechanical energy of motors and also on the conditioning of replacement air.
Each SH has a 12 month warranty.
The robust 1.2mm galvanised mild steel sheet casing, is treated internally with a Class O rated (BS 476 Parts 6 and 7) fire resistant acoustic foam lining with a fire resistant polymeric coating. The casing is specially manufactured using integral motor mounting plates to provide additional rigidity for the casings. Each casing provides spigots to suit standard circular ducting. A removable lid is provided as a standard feature to facilitate ease of maintenance and cleaning.
The single range of units shall have an EC external rotor motor fitted as standard. The motor contains sealed for life bearings. Thermal Class of motors to THCL 130 or 155 dependent on size. Manufactured by Ziehl-Abegg providing increased reliability. All motors are suitable for use in ambient air conditions up to +60 ℃.
High efficiency low tonal noise backward curved centrifugal impeller, dynamically balanced to ISO 14694 Grade G6.3 and directly driven by the motor.
Units shall be supplied with integrated commissioning controlallowing single speed selection and alsolimiting maximum speed if used with anexternal potentiometer.
Units are to be designed and manufactured with procedures as defined in BS EN ISO 9001. All Hideaway SH units are to be tested to ISO 5801 (airside performance) and BS 848 Part 2 (sound performance).