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Electric Combination Boiler User Manual
NTRODUCTION
We would like to thank you for your choice of UNMAK brand, electric hot water
combination boilers (electric boilers).
Please read the user manual carefully before installing and operating your product
and keep the user manual for the duration of the product use. Do not touch or mix
any part of the product except where permitted in the user manual.
The installation, maintenance and service of your device requires a specialized
technical team.
These operating instructions and regulations must be observed in order to install the device, to select the
location for installation, and to install the appliance.
Produced in different capacities from 9 kW to 36 kW, the heating elements on the Electric Combi boilers
are arranged in sequence and each of them is activated gradually. Our combi boiler is designed for room
thermostat use in order to benefit from energy savings. It is useful to use room thermostat for the lowest
electricity consumption. Our electric boiler is an environmentally friendly device with small volume and high
efficiency.
In our boilers with instant water heater, hot water supply has been provided with the application of plate
heat exchanger and three-way valve system for the need of domestic hot water.
A leakage current relay is used in the electric boiler package, electrical installation, against electrical
leakage. In case of any water leakage on the boiler and in case of electric leakage for any reason to the
body, the combi is automatically deactivated by the leakage current relay.
The electric boiler water temperature is set on the electronic board according to the maximum 85 ° C. If the
temperature increases as a result of any card failure, the safety thermostat on the electric combi boiler will
cut off the system and stop the system in the range of 93 ° C - 95 ° C. There is also a 3 bar pressure sensor
on the boiler. The mechanical safety valve is used as the second additional safety measure. This valve will
protect the system by pushing out the excess water in the system due to overheating in the boiler or due
to an excessive pressure in the first filling. It is appropriate to connect the hose coming out of the safety
valve to any drain line.
The water level circuit is used in the boiler body in order to prevent water resistance of the heating elements
on the boiler body. Control of waterless operation is done by electronic card. If the water level in the
installation falls below the level of the sensor (mechanical pressure error), the boiler will be automatically
deactivated. In this case, after the installation water temperature is reduced below 40 ° C, the boiler will
start working again by adding 1.5 bar water to the installation.
During the first start-up and operation of the boiler, air may be generated at certain intervals. Automatic
air separator is used at the top of the boiler in order to dispose of the generated air automatically.
With the closed expansion tank on the boiler, it is ensured that the installation works safely in a certain
pressure range.
