4.
Safety Aspects
It is inadmissible to use fuels other than specified in heading 1. of this manual. In particular, it is
forbidden to use such fuels as solvents or petrol
All activities regarding operation of thedevice must be performed in protective gloves and by a person
trained for operation.
It is prohibited to put hands in the protective grids of the furnace or areas of the operating fan.
It is necessary to ensure efficient ventilation of the heated room in order to avoid carbon monoxide
poisoning.
While cleaning the device or performing other maintenance activity, the device must be disconnected from
power by removing the electrical plug from the power socket.
When connecting the device to a 240 vac GPO, it must be made sure that the wiring is operational and
that it has differential current protection and earthing.
The MTM 52 universal oil heater is powered by 240 vac, 50Hz. It has two bimetallic sensors, ensuring safe and
economic operation. The bimetallic sensor located on the heat exchanger closes a contact when the temperature
exceeds 40°C and will open the contact when the temperature drops below 35°C. In emergency situations
(overheating, oil overflow) the processor checks the bimetallic sensor signal and maintains the fan operation until
the furnace has cooled down to temperature below 35°C.
The other bimetallic sensor is located on the heat exchanger as well and its threshold temperature equals 90°C. Its
contact opening resulting from exceeding 90°C causes the heater to immediately enter the Overheating phase (see
point 8. in this Manual). The heater is also equipped with a weight sensor located under the combustion chamber (i.e.
overflow cut-out). When the tank of the cut-out has filled up, the heater automatically switches to the phase
Overflow (see point 8. in this Manual).
5.
Controller structure
The connection of the heater controlling panel to other system components (sensors, pump, fan) is factory-made.
During normal use, due to safety, under no circumstances should there be any interference in the covered part of
the heater controller or duct integrity. Any action by an unauthorised person may result in electrocution (240V AC,
50Hz) and burning.
Fig. 1. The connection of the universal oil heater type MTM 52.
