Radijator Inženjering d.o.o, 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]
85
7.4. Pellet thermostat
-
Pellet thermostat is also a standard part of the boiler equipment. In case the temperature of the
pellets reaches a critical value, the automation system will do the following:
o
Stop the system for feeding pellets;
o
Fan must remain turned on;
o
Turn of the heating element (if it was turned on);
o
Write a message Er06 on the display.
These precaution measures increase the safety level of the system.
7.5. Installing additional equipment
7.5.1. Introductory notes
Settings and connecting additional equipment may be performed only by professionals.
The number of inputs and outputs in the automation system is limited. When choosing additional
equipment, consider your priorities carefully with a professional. Not all additional equipment can be
installed at the same time. Make priorities. You have available three temperature inputs, input for the
sensor of pellets level, two outputs that may be used for different purposes (their behaviour is
programmed by parameters), output for electro valve and output for boiler pump.
Each output of the automation system has uniformly defined maximum permanent current load.
Maximum one-time permanent current load of the automation system is 6.3A. Maximum load per output
is 3A. Factory-installed power is 420W, or 1.8A.
Installer of additional equipment is due to take care of limitations of individual outputs, as well as of
maximum on-time load of the automation system.
In the following situations:
o
Maximum one-time load exceeds 6.3A;
o
Individual output is overloaded;
o
You need a three-phase consumer unit;
Our recommendation is to use relays and contactors of adequate characteristics.
7.5.2. Room thermostat or outdoor temperature sensor
It is not possible to install the room thermostat ad outdoor temperature sensor at the same time.
7.5.2.1 Room thermostat
Input for room thermostat is dry contact. For the room thermostat it is important to be battery-powered
on, i.e. they should not have any supply of the voltage of 230V. On the thermostat for the connection NC
is used (normally closed contact).
Connecting: remove the jumper in the connector and connect the thermostat as per the connection
diagram.
