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Hot Water Boiler with Steel Body, Automatic Fuel Feed Operation and Maintenance Manual
ELECTRICAL INSTALLATION INSTRUCTIONS
ÜNMAK boilers are supplied with 230 Volt mains voltage. The regulator should be used where the
mains voltage is less than or equal to ten percent.
The control panel must be connected to a wall panel with suitable grounding equipment, the
distance between the boiler board and this wall panel must not exceed 50 cm. All electrical
connections must be carried out by authorized personnel in accordance with local regulations.
Separate grounding installation must be done for each boiler room. Earthing installation:
a) 0.5 m2, 2 mm. Thick copper plate,
b) 0.5 m2, 3 mm. thick galvanized plate (hot dip) or
c) Pure copper rod should be made with electrodes.
The copper rod electrodes must be at least 1.5 m in length or Ø 20 mm in diameter and at least 1.25
m in length and the grounding resistance of the rod electrodes should be below the limits of 20 Q.
(Neutral-Earth voltage Toprak3V)
In all three cases, copper electrodes or plates must be connected to the natural gas installation by
soldering or welding using at least 16 mm2 multi-stranded copper wire and conductive shoe. Copper
electrodes or plates should be placed in the ground as a whole, and the conductor remaining on the
ground must be connected to the boiler room main table with the pipe housing.
THIS PRODUCT MUST BE CONNECTED TO A SAFE EARTH LINE!
The boiler must be closed and should not be installed in living spaces.
