IRE 125 A1

  • Insulated duct fan with circular connections.
  • Equipped with 50 mm of thermal and acoustic insulation makes it ideal for handling cold air.
  • Designed for high pressure and long, complicated duct runs.
  • The design prioritise functionality, durability and longevity.
  • Impeller with forward curved blades.
  • The external rotor motor has maintenance-free sealed ball-bearings.
  • Integrated motor protection.
  • Junction box has enclosure class IP 54.
  • For speed control a transformer or electronic speed controller can be connected.
  • The housing is manufactured from galvanized sheet steel.
  • Duct connections are equipped with rubber seals.
  • The fan is intended to be installed in a duct system.
  • A duct connected fan can be installed outside or in damp environments.
  • To comply with the ErP 2018 regulation, a local demand controller must be used.

Technical Data

IRE 125 A1 aut tc
7900073		 IRE 125 A1 man tc
7900002
Parameter Value Unit Value Unit
Voltage 230 V 230 V
Phase 1 ~ 1 ~
Frequency 50 Hz 50 Hz
Power 61 W 61 W
Current 0.27 A 0.27 A
Speed 1130 r.p.m. 1130 r.p.m.
Max. temperature of transported air 70 °C 70 °C
Max. temperature of transported air when speed controlled 70 °C 70 °C
Sound pressure level at 3 m 29 dB(A) 29 dB(A)
Weight 9.7 kg 9.7 kg
Enclosure class 44 IP 44 IP
Insulation class, motor F F
Capacitor 4 µF 4 µF
Duct connection 125 mm 125 mm
Max. flow @ 0Pa 61 l/s 61 l/s
Max. pressure 240 Pa 240 Pa
Voltage range 220-240 V 220-240 V

Product information sheet

Parameter Value Unit
(a) Manufacturer Östberg -
(b) Model code IRE 125 A1 -
(c) SEC average climate -21.5 kWh/m2
  SEC average climate, class D -
  SEC warm climate -6 kWh/m2
  SEC warm climate, class F -
  SEC cold climate -48.5 kWh/m2
  SEC cold climate, class A+ -
(d) Declared type RVU / UVU -
(e) Type of drive Multi-speed drive (accessory) -
(f) Type of heat recovery None -
(g) Thermal efficiency None %
(h) Max. flow rate (@100Pa) 178 m3/h
(i) Power at max. flow rate 58 W
(j) Sound power level 35 dB LwA
(k) Reference flow rate 0.035 m3/s
(l) Reference pressure difference 184 Pa
(m) SPI 0.42 W/(m3/h)
(n) Type of control/ctrl factor Local demand control(accessory)/0.65 -
(o) External (and internal) leakage rate 2.36 (N/A) %
(p) Mixing rate N/A -
(q) Visual filter warning N/A -
(r) Instruction supply/exhaust grilles See manual -
(s) Disassembly instructions fsp.ostberg.com -
(t) Airflow sensitivity N/A -
(u) Air tightness N/A m/s
(v) AEC 273 kWh
(w) AHS average 2830 kWh
  AHS warmer 1280 kWh
  AHS colder 5536 kWh

Accessories

Mechanical accessories