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Figure 5. Electrical connections
3.3.1. Installation of Control Unit and Sensor
Install the sensor as shown in figure 6. Detailed
instructions for the installation of both the unit and
the sensor are delivered with the control unit.
The sensor must be installed exactly in the
specified place. Otherwise the heater may not
function properly.
The supply air vent of the sauna room must
not be located near the temperature sensor.
The air flow near an air vent cools down the sensor,
which gives inaccurate temperature readings to the
control unit. As a result, the heater might overheat.
The air vent's minimum distance from the sensor
(figure 6):
omnidirectional air vent: 1000 mm
•
air vent directed away from the sensor: 500 mm
•
The sensor must be installed to the place defined in
these instructions (figure 6). If the minimum distance
is not fulfilled, ventilation must be changed.
3.3.2. Electric Heater Insulation Resistance
When performing the final inspection of the electrical
installations, a "leakage" may be detected when
measuring the heater's insulation resistance. The
8
The heater's electrical connections
Heater
Output
PO10E
10,0
PO12E
12,5
PO15E
15,0
4x2,5 mm² (SSJ)
Junction box
Fuses [A] 200 VAC
3-Phase
3x30
3x40
3x45
3.3.1.
reason for this is that the insulating material of the
heating elements has absorbed moisture from the
air (storage/transport). After operating the heater
for a few times, the moisture will be removed from
the heating elements.
Do not connect the power feed for the heater
through the RCD (residual current device)!
3.4. Installing the Heater
See figure 7.
1. Connect the connection cable to the heater
(see item 3.3. "Electrical Connections").
2. Place the heater body. Adjust the body
vertically straight with the adjustable legs.
3. Place the steel frame. Adjust the frame
vertically straight with the adjustable legs
(PO15E only).
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