Electrical Connection - Heatrae Sadia ADVANCE Installer Manual

3.4.4. Exhaust air from dwelling
The ventilation unit draws exhaust air out of the
dwelling through this port. This duct does not normally
need to be thermally insulated. Thermally insulated and
vapour-tight ductwork is only necessary if the ventilation
unit is located outside the thermal shell of the dwelling
(for example in a non-insulated attic). For optimal
comfort a silencer should be fitted on this nozzle.

3.5. Electrical connection

The ventilation unit has a four-wire cable. The ventilation unit is
double insulated and is therefore not earthed.
If the HRS-3 wired three-position switch is used for speed control,
connect the wires as shown in the diagram below.
230V N
50 Hz L1
If another type of wired switch is used for speed control, connect
the wires as shown in the diagram below.
N L1 B M
2
C 1
230V
N
50 Hz
L1
Wire Colour Mode
N blue —
L1 brown low
L brown —
M grey medium/
auto
B black high
N L1 B M
B M L
Functio Connection
n
neutral mains supply
phase mains supply / switch
switch switch/unit
switch switch/unit
switch switch/unit
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