Defro Home VITAL 37S, Operating Manual

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In case of any problems, you should contact sales
outlet or qualified personnel authorized by DEFRO.
Request original spare parts if the repair is necessary.
Use only gaseous fuel with properties compatible with
the recommendations of this operating manual.
Check and clean flue gas discharge ducts (connecting
piece to flue) periodically.
Store this manual carefully because it should be
available for a whole period of equipment operation.
In case of sale of giving the equipment to the other
user you should always make sure whether the
product has the manual enclosed.
Request new copy from authorized sales outlet in
DEFRO company if it has been lost.
3. INTENDED USE
The room heater is intended for combustion of natural gas (NG) or,
after proper adaptation, propane-butane (LPG) gas, to heat the rooms
where it has been installed.
Gas-fired room heater can be connected multiple times.
4. TECHNICAL SPECIFICATION
4.1. DESIGN
The body of the heater is made of steel sheet with combustion chamber located inside and lined with additional panels made of sheet (rear and
sides).
Picture 1 Design of DEFRO HOME VITAL heater.
1 - explosion relief vents, 2 - window panel, 3 - end cap of gland for gas lines, 4 - adjustable feet, 5 - flue, 6 - panels of combustion chamber, 7 - set of
control burner, spark igniter and temperature sensor, 8 - primary burner, 9 - combustion air inlets.
The gas burner supplied with gas and air is located in the floor of the chamber. Gas is supplied from the electronic controlled dosing device GV60,
which is connected to the gas piping system. Gas is combusted after initiation of ignition by the spark igniter, which initiates ignition of the ignition burner.
The main burner is started after detection of ignition flame. Flue gas is exhausted through the concentric connector to twin-walled concentric coaxial pipe
(internal pipe). The same pipe (external pipe) is used to supply air required for combustion. The fireplace is operated by a remote control, which is part
of the control system manufactured by Mertik Maxitrol GV60.
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