Thermolec Mini Boiler - Manual (Page 10)

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10.3 Simulate a heating demand by setting the thermostat higher than the room temperature.
10.4 Switch the mode selector to position and check that the burner responds to the thermostat demand.
10.5 Switch the mode selector to the "Dual-Energy" position . Install a jumper between terminals "S1 / S2";
the electric mode is automatically selected. The pump will start and the heating stages will be switched
ON in sequence at 5 second intervals. Measure the current drawn by the boiler and compare it with the
one shown on the nameplate. If you remove the jumper from terminals "S1 / S2", the system should switch
back to the "Mazout / Oil" mode. Switch the mode selector to the "Electric" position . The controller
allows only electric heating even if the contact "S1 / S2" is open.
10.6 Switch the mode selector to the desired position and set the room thermostat to the desired temperature.
10.7 Your boiler is now ready and functional.
11 Installation examples
11.1 Installation A shows a Thermolec electric boiler in a Full-Electric Configuration.
11.2 Installation B shows a Thermolec electric boiler in a Dual-Energy-Series Configuration.
Water is always passing through both boilers even if only one heat source is selected at a time.
11.3 Installation C shows a Thermolec electric boiler in a Dual-Energy-Parallel Configuration.
Water is forced only through the selected heat source by means of a motorized valve.
12 Position and electric values of heating elements
Standard values of heating elements at 240 Volts are 3kW, 5kW, 5.75kW, 8.75kW et 10 kW. Please refer
to the following sketches and tables to find the position and test value in ohms of each element. Please
ensure you disconnect the element completely before you make the resistance reading.
13 Replacement of heating elements
Heating elements nuts and cover bolts have been factory torqued with a calibrated tool. Please make
sure you have a torque driver and the proper sockets handy before you open the boiler tank.
Elements nuts should be torqued at :
14.6 Newton-meter (Nm) or equivalent
Please ensure you use the double wrench method (i.e. an open key inside of the tank to hold the
element hexagon flange firmly and the torque wrench outside). Don't let the element turn while tightening.
Cover hex bolts should be torqued at :
7.8 Newton-meter (Nm) or equivalent
Please make sure to tighten all nuts by hand first, then tighten them as per fig. 8 and finally apply the
proper torque with the torque wrench. Resist the feeling that the bolts could get torqued more (even if
possible) because that action would simply squash the silicone gasket to the point where it would
eventually lose all its resiliency and sealing properties.
Keep in mind that an equal torque is far more important.