Operation Manual

24
11. Therm EL boilers connection to the power supply
♦ Therm EL 8 boiler connection to the power supply
REKAS1
PT BT NU TL TB TV OT
BL
HDO
L1 L2 L3
N
Pe
VENTIL
N TUV TO
C
A+
1 2
GND
OR
REKZOB
REKREL
REKCPU
B-
1,25A
K7K6
K5
h
K2
K4K3
K1
Re1 Re2 Re3
1
1
Safety
thermostat
Night moderation
DHW
Heating water
sensor
Relief relay 1 Relief relay 2 Storage tank thermostat DHW sensor Outdoor temperature sensor OT communication
Three-way
valve
Blocking element
MRC
Heating
Circulation
pump
Cascade
Contactor
Room thermostat
Pressure
sensor
Contact functions:
1/ contacts of the Room thermostat must be permanently connected during the boiler operation
2/ contacts of the “blocking element” must be permanently connected during the boiler operation
3/ contacts of the Emergency thermostat must be constantly connected during the boiler operation
4/ if the storage tank Thermostat
is connected, the boiler heats the DHW in the storage tank