25.07.2014 ZUG ELEKTROMET
1. General information
Heaters type EJK mini are designed for heating water in open and closed metal tanks,
including enamelled domestic hot water tanks in particular. In those tanks with anti-corrosion
cathodic protection system using magnesium anode or external current anode heating elements
should be partially insulated electrically from tank walls. Thanks to this, the electrochemical
potential difference between heating elements made of copper or special stainless steel and the
tank made of carbon steel is partially equalized in a tank filled with water. This way the
durability of heating elements and the life of the magnesium anode are increased significantly.
The insulation of heating elements in EJK mini heaters is done by fixing them in a casing
wholly made of plastic. Heating in a casing is placed in the metal head. Between the heating
element and the tank there is no electrical connection so that the metal of the sacrificial anode
is not deposited on the heater.
The heater EJK mini is not intended to use in storage tanks made of stainless steel.
2. Structure and technical data
Heaters type EJK mini are made of tubular heating elements with an internal resistance
wire, heater insulating bezel pieces, metal head and a casing containing single-phase 230V
power supply unit, including a temperature controller with stepless temperature adjustment and
a non-automatic temperature limiter to protect the heater from overheating. The temperature
controller knob and signal lamps are situated in the cover closing the upper part of the casing
body. The lower part of casing body ends with a metal head with a 1½” thread to screw the
heater to the tank coupling. Heaters structure scheme and their technical data are shown in fig.
1 and in table 1.
Tab. 1. Heaters technical data
To Next Page
Loading...