16
User manual
ENG
Symbol
Description
Devices connected to communication port com.
Room unit DD2+ is connected. The number beside room unit indi-
cates, whether this is the first or the second room unit.
State of the controller in bus connection.
Standalone controller - not in bus network.
The first controller in bus network.
Intermediate controller in bus network.
The last controller in bus network.
Symbol
Description
Liquid fuel boiler overheating protection.
Solid fuel boiler overheating protection.
Solar collectors overheating protection.
Accumulator overheating protection.
D. h. w. storage tank overheating protection.
D. h. w. storage tank overheating protection - cooling directed into the
boiler.
D. h. w. storage tank overheating protection - cooling directed into the
collectors.
Frost protection - heating circuit.
Frost protection - boiler switch-on to minimum temperature.
SYMBOLS FOR PROTECTION FUNCTIONS
SYMBOLS FOR THE INDICATION OF COMMUNICATION BETWEEN DEVICES
Symbol
Description
Output operation according to program timer.
T1, T2, T3,...T8
Temperature measured by sensors T1, T2, T3, T4, T5, T6, T7 or T8.
TR1, TR2
TA
TQ
Temperature measured by a room sensor or room unit DD2+.
Outdoor temperature, obtained through the bus connection.
Heat source temperature, obtained through the bus connection.
