Control unit has several functions which assure basic
1.7
characteristics, mainly:
safety functions assure protection against the of health
†
1.7.1
and property
The boiler is designed according to valid norms and rules
user's functions functions set by the user
†
ČSN EN and IEC. The safety of the boiler, energy saving
operation functions internal functions of control unit
and sound was important matter during the boiler
†
designing.
import for sound operation of the boiler, but un-get-at-
able for the user
1.7.2 Principle of boiler operation
Control unit could be in below mentioned modifications:
The insulated boiler body with volume 10,6 l is a reservoir
basic only for heating = control unit + mode relay
†
where water is heated by electric heating elements
for heating and heating of sanitary water = control unit
†
according to the boiler type, by one (05 kW, 06 kW and 08
+ mode relay + mode TUV (sanitary water)
kW), two (09 kW, 12 kW and 15 kW) or three (18 kW and
for heating with GSM remote control = control unit +
24 kW). Depending on the actual heat requirement,
†
individual heating rods are connected, each of them
mode relay + mode GSM
having a power output of 1,5 kW for Comfort 05 and
for heating and heating of sanitary water with GSM
†
Comfort 09 (1 heating rod = 1,5 kW, 6 heating rods 9 kW),
remote control = control unit + mode relay + mode TUV
a power output of 2 kW for Comfort 06, Comfort 12 and
(sanitary water) + mode GSM.
Comfort 18 (1 heating rod 2 kW, 9 heating rods 18 kW) or a
power output of 2,5 kW for Comfort 08, Comfort 15 and
Control unit works with below mentioned inlet signals:
Comfort 24 (1 heating rod = 2,5 kW, 9 heating rods 22,5
temperature of heating water (sensor NTC)
†
kW). Circulation of water is through the pump. Safety of
outside temperature (sensor NTC)
†
boiler operation is monitoring by several independent
sensors. Whole heating process and pump operation is
room temperature (sensor NTC)
†
controlled by the control unit with display and push touch
temperature of sanitary water (sensor NTC) only if the
†
control buttons. The button 0/1 is for switching off the
boiler has connected TUV (sanitary water) sensor
boiler out of operation.
switching on signal of sanitary water heating 230 V
†
(only if the boiler has TUV (sanitary water) mode
1.7.3
Decription of function
Technical description
Control unit and control board
ELECTRA
C
OMFORT
9
blow off valve of the boiler
body
outlet of heating wate
(warm)
G 3/4”
outlet of safety valve
blow off valve of th
pump
inlet of heating water
(cold)
G 3/4”
