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Electrical pre-heating element
If the unit is purchased as a Polar version, the electric preheating surface is mounted on top of or on the side of the unit in the outdoor
air duct before the unit with the required temperature sensor.
1. The electric heating surface is located under the unit. 2. Outdoor air spout are removed.
3. The preheating surface is installed at the outdoor air duct con-
nection on the top (standard) or on the side of the unit (in which
case the cover plate must be moved to cover the hole in the top).
Be sure to place the heating surface so that the cover for the
automatic opening can be easily opened.
4. The spout is mounted on the heating surface, ready for
duct mounting.
5. The temperature sensor for the preheating surface is pushed
8 cm into the tulle. Then, inside the unit, it can be seen hanging
just above the outdoor air filter.
6. The T1 sensor is pulled from the 8-pole outlet into the
outdoor air duct (30 cm before the preheating surface).
7. The power supply cable is pre-mounted in the unit and the
preheating surface connected with Phase (F), Zero (N) and
Ground (J).
8. The preheating surface can be mounted on the top or
side of the plant, as well as in the duct. The power supply cable
is 2 meters extra for duct mounting.
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