Thermolec Mini Boiler - Manual (Page 9)

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9.8 Set the thermostat above the room temperature. The system should start.
9.9 Make sure the pump starts running as soon as the system starts.
9.10 Heating stages will be switched ON in sequence at 30 second intervals, confirmed by green lights on the
left hand side of the PC board on the TH600 or by red lights on the right hand side on the D22-B.
9.11 Wait for two minutes and measure the current drawn by the boiler and compare it with the one shown on
the nameplate.
9.12 When the required maximum water temperature selected on the aquastat (0-10) or controlled by the
outdoor sensor is reached, the electronic controller will modulate the boiler capacity to maintain the water
temperature, as long as the demand for heating is not satisfied. The bottom green light flashes
continuously on the TH600 or one of the red lights on the D22-B to indicate that the boiler is maintaining
the setpoint. When the room thermostat is satisfied, the heating stages will come OFF in sequence at 5
second intervals.
9.13 Set the room thermostat to the desired set point.
9.14 The boiler is now ready and functional.
Extra test steps for "Dual-Energy" installation.
9.15 Disconnect the room thermostat wires from the existing boiler and connect them to "C" and "W1" terminals
on the electronic board of the electric boiler.
9.16 Connect two (2) wires from "B / B" control terminals of the electronic board to the thermostat terminals of
the existing boiler.
9.17 Terminals "S1 / S2" on the electronic board should receive the utility Dual-Energy Signal wires.
9.18 Connect the pump terminals "P / P" in parallel to the existing thermostatic pump control as to allow the
operation of the pump in any of the "Dual-Energy" modes selected.
10 Test sequence for "Dual-Energy" systems
10.1 A "Dual-Energy" boiler is supplied with a three-position mode selector switch. Because of differences in
regional regulations, the electronic board has been factory set so as to allow the activation of the electric
mode depending on the unit destination. In the "Mazout / Oil" position the thermostat will call upon the
gas or oil boiler or furnace to maintain the house temperature at the desired level. The "Dual-Energy"
mode gives automatic control to the outdoor sensor or alternate switching signals from the local utility for
"Dual-Energy" control. When the "Dual-Energy" contacts are closed, the "Electric" mode is selected.
When these contacts are open, the "Mazout / Oil" mode is selected. If the "Electric" mode is manually
selected the controller allows only the electric mode operation. A green pilot light indicates the mode that
has been selected.
10.2 The positions of the manual selector are :
MAZOUT / OIL
BI-ÉNERGIE /
DUAL ENERGY
ÉLECTRIQUE /
ELECTRIC
Dual-Energy mode
(signal given by the
utility company)
Electric mode only
Fig. 6
Models with manually
selected Electric mode
available
Heating by means of original furnace (electric or mazout/oil).