25
Construction and Function
Unit components
4.3.2 Fan Unit
The fan unit has one or more motors with one or more
radial fans depending on the model. The radial fan draws in
secondary air from the room and blows it through the heat
exchanger.
Fig. 11: Fan unit
Fig. 12: Vent pipe with air valve
and air vent screw
Fig. 14: Main condensate tray
Fig. 13: Junction box
4.3.3 Air Vent
The vent screws and air valves on the vent pipes have
tobeopentoventtheheatexchanger.Useaatblade
screwdriver or an appropriate spanner to open the vent
screws. Use an appropriate Allen key to open the air valves
on the vent pipes. Use a wrench underneath the air valve
to prevent the air valve from tearing off if the valves are
difculttoopen.
4.3.4 Junction Box
Galvanised steel junction box with rep switch and plugs for
the electrical connections.
4.3.5 Main Condensate Tray
The galvanised steel powder coated main condensate tray,
with impermeable insulation is used to collect condensate
water.
The condensate water passes out of the side of the main
support.