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Heating modules MN-240

Heating modules MN-240


Heating modules MN-240 are running water inertialess gas apparatus (water heaters) in cabinet performance with forced heat carrier circulation for water heating of industrial, residential and public buildings and constructions.

The thermal units are used in MN-240. Each of them consists of combustion chamber, heat exchanger and gas burner device.
The heat exchanger is composed of connected parallel spiral elements made from stainless steel.
The gas burner device includes the tubular burner on which the fan supplies preliminary prepared in appropriate proportion mixture "gas-air".
Such burning technology using ("premix") allows to reduce considerably the content of harmful substances in combustion materials and to raise the efficiency.

Depending on required momentary heating power the fan can change rotation frequency thus providing the flame modulation in the range of 20 % to 100 % of heating power.
In the combustion chamber the heat carrier that is supplied into the heat exchanger first shares heat with outgoing combustion materials and the moisture in them condenses recovering the additional heat named "hidden" heat.
Using of such effect (condensation mode) substantially increases the coefficient of efficiency.

The module is mounted constructively into the heating boiler systems with long-standing heating modules MN replacing two modules MN120 or MN120 Eco by power so as by overall and port dimensions that allows to update easy the existing heating boiler systems.

Specifications

Name Units of measure Value
Nominal heat capacity, ±5% kW 240
Coefficient of efficiency, not less
- in custom mode (80°/60°)
- in condensation mode(50°/30°)
%
97
103
Type of gas - Natural
Nominal gas pressure Pa 1960
Nominal gas flow when t=20 °, atm.pressure 760 mm of m.c., Q. .= 8000 kkal/m3 m3/h 26,5
Maximal working pressure of heat carrier Pa (bar) 0,6 (6)
Maximal heat carrier temperature °C 90
The heat carrier temperature range on the outlet from the module, not less °C 40-85
The combustion materials temperature on the outlet from the module, not less>
- in custom mode (80°/60°)
- in condensation mode (50°/30°)
°C

60
40
Power supply characteristic (voltage/frequency) V/Hz 220+10%-15%/50-1
Maximal electrical power W 1000
Content in combustion materials, not more:
- carbon oxides
- nitric oxides NOx
mg/m3

50
15
Mass kg 210