36000 Kraljevo, Živojina Lazića
- Solunca br.6, Srbija
tel. +381 36 399 140, fax. +381 36 399 150, http://www.radijator.rs
e-mail: [email protected]
75
All lines that are displayed in the intermittent form in the diagram of external connections are the
conductors which should be installed by the technician when connecting the external devices
onto the automation system of the boiler. All the connections of the additional devices are
performed by the technician through three connectors located at the rear of the boiler. One
connectors are three-pole connectors while one is seven-pole connector. One three-pole
connector serves for the connection of the room thermostat as shown on the label the connector
itself.
For the room thermostats it is important to be battery-powered on, i.e. they
should not have any supply of the voltage of 220 V. On the thermostat for the
connection NC is used (normally closed contact)
.
Seven-pole connector is for connecting network cable and for the connection of the circulation
pump and the battery pump i.e. of the heater for sanitary water.
The boiler can operate even if none of the pumps is connected, but
manufacturer's recommendation is that, at least, the pumpa1 (central heating
pump) because it has the function of a security element. It is switched on when
the boiler water temperature exceeds 90
˚C
.
The boiler is adjusted according to the default factory hydro installation as in Figure 12.
Figure 12.
It is obvious that there is only one measuring point S1 and that probe is already positioned. The
second probe that is connected onto the connector on the back of the boiler, in this case, remains
unused. (probe factory is not set and can be ordered directly from the manufacturer of boiler
„Radijator inženjering“).
