To protect against short circuits, install an automatic circuit breaker (CB) with a rating of up to 16 A in the phase wire break before the thermostat.
To protect against electric shock, install an SSD (safety shutdown device). See diagram 1.
For installation you need:
— make a hole in the wall with a diameter of 60 mm
for the mounting box and channels for power supply and sensor wires;
— bring the heating system power and sensor wires
to the mounting box;
— make connections according to this manual;
— secure the thermostat in the mounting box.
The terminals of the thermostat are designed for wires with a cross-section of no more than 2.5 mm². It is recommended to use soft copper wire, which can be tightened in the terminals using a screw-driver with a blade width not exceeding 3 mm and a torque of
0.5 N·m.
The use of aluminum is not desirable. A screwdriver with a blade width greater than 3 mm may cause mechanical damage to the terminals, which can result in the loss of warranty service rights.
Place the sensor in the floor screed using a mounting tube, such as a 16 mm diameter metal-plastic tube, which bends once with a radius of at least 5 cm and is inserted into the heating zone for 50 cm. To ensure the sensor can be replaced in the future, seal the end of the tube with a copper plug or insulation tape. Sealing with a copper plug will provide more accurate floor temperature measurements. Insert the sensor into the tube after the screed has hardened. Strip and crimp the ends of its wire with insulated terminals.
If necessary, reduction and increasing (up to 20 m) of sensor connecting wires is acceptable. For extending, use a separate cable with a cross-section of
0,5... 0,75 mm². Near the sensor connecting wires should not be the power cables, they may be interfere.
Figure 1.
Mounting the thermostat and underfloor heating
