▪If a power outage (or MRC signal interruption) occurs, the boiler is shut down. When the power supply is
renewed, the electric boiler restarts its operation.
▪No objects can be placed on the jacketing or inside the electric boiler. Cleaning of the electric boiler
external surface is recommended only by a damp cloth.
▪It is recommended to bleed the heating system regularly and remove the deposited impurities by
discharging small amounts of the liquid through the discharge cock assuring that also sediments at the
bottom of the boiler vessel are washed out.
▪Switch off the boiler after the end of the heating season by the circuit breaker. It is recommended to start
the boiler for roughly 30 seconds every month to spin the pump outside the heating season.
▪Minimum water pressure at the circular pump inlet must be 5 kPa (the water temperature must not exceed
75°C).
▪Check whether the air charge pressure specified on the expansion vessel label is sufficient for the heating
system (system static height of 5 m corresponds to the air charge pressure of 50 kPa, 10 m = 100 kPa, 15 m
= 150 kPa) prior to the boiler connection to the heating system.
Setting the pressure in the expansion vessel
When the system is filled with the heat carrier and properly vented, write down the displayed system water
pressure value. Correct the air charge pressure in the expansion vessel to the same value by bleeding. Adjust the
system pressure value to at least 10 kPa by filling more water into the system. If the air charge pressure in the
expansion vessel is not correctly adjusted, similar defects – big changes in pressure during operation – occur as in
the case of an insufficiently rated expansion vessel.
♦ Maintenance
Regular maintenance is very important for a reliable operation and high durability of the boiler and its
components. The user is recommended to contact the manufacturer via a local authorized service organization and
ensure regular inspections after every year of operation (which is one of the conditions for warranty
acknowledgement). Service engineer will also carry out an inspection of the control and safety elements of the
boiler. To safeguard faultless heating system service, it is necessary to regularly check the initial water pressure in
the cold state. Shall any drop in pressure occur, the heating system must be replenished with water.
The outer jacketing can be cleaned by a dishcloth dipped in soap-suds and subsequently dried.
♦ Boiler shut-down
You can switch off the boiler for a shorter period by pressing the 0/1button or potentially by the room
thermostat switch. If you want to shut the boiler down for an extended period of time outside the heating season
(i.e. during summer holiday), it is suitable to switch off the boiler by the external main circuit-breaker (switch)
unless there is a potential risk of system freezing or pump clogging (these functions are naturally not available
during the complete boiler shut-down).
Manual
View the manual for the Thermona THERM EL 15 here, for free. This manual comes under the category water heaters & boilers and has been rated by 1 people with an average of a 8.3. This manual is available in the following languages: English. Do you have a question about the Thermona THERM EL 15 or do you need help? Ask your question here
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