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Installation, Operating and Maintenance Instructions
5.0 Control Specification
The HRU is supplied with a Trend IQeco38 based control.
Software
The controller leaves the factory with a simple control strategy that
is only suitable for testing. Before use, the controller must be re-
programmed with a suitable Trend strategy that is approved for the
application.
Tacho Signal Converter (Fan Run Relay)
A PCB is fitted which provides a volt free relay output so show the fan
running state. The relay is energized while all fans are running and
de-energized if any fans stop.
Please note that the PCB requires at least one fan to start before the
software routine runs.
Temperature Sensors (Internal)
The unit is fitted with 3 x 10K3A1 thermistors for extract, supply and
fresh air temperature.
Fan Output
A 0-10v signal is required to run the supply and extract fans.
The minimum starting voltage is 2 V.
Belimo Actuator
The IQeco38 internal relay is used to power the 24 V AC face damper
actuator.
Actuators
The 3 smaller 230 V AC actuators are powered via 3 x 24 V AC relays.
Supply Voltage
AC 207 – 253 V AC AC line Frequency
Hz 47 – 53Hz
Supply Current
Total unit load 3A
Operating Environment
-10 to 40°C
Safety
· Installation must be by qualified personnel in accordance with
local applicable standards.
· This equipment must be earthed.
· Access is limited to service personnel only. Live parts are
accessible when cover is removed.
· Residual risk of contact with fan. Maintenance personnel should
take due care and attention.
· EC Fans use Capacitors to store mains voltage. Contact with the
mains wiring must be avoided for 5 minutes following supply
disconnection.
3
XB-EFA-8L-BK & XB-EFA-8R-BK
02. 05. 19. Leaflet Number 671702
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