Heating mode
The control unit calculates a set boiler
water temperature depending on the
outside temperature and/or the room
temperature (if a room temperature-
controlled remote control facility is
connected) and the slope/level of the
heating curve. The determined set
boiler water temperature is then trans-
ferred to the burner control unit.
The burner control unit calculates the
heat demand and controls the two-
stage burner accordingly. The boiler
water temperature is limited inside the
burner control unit to 82 °C by the
electronic temperature limiter. The
temperature limiter in the safety chain
locks out the burner control unit at a
boiler water temperature of 100 °C.
DHW heating
The burner, the circulation pump and
the three-way valve are started or
changed over, if the cylinder tempera-
ture lies 2.5 K below the set cylinder
temperature.
The set boiler water temperature is
adjusted 20 K higher than the set
DHW temperature (adjustable via
coding address "60"). The burner will
be switched OFF and the circulation
pump run-on time will begin, if the
actual cylinder temperature exceeds
the set cylinder temperature by 2.5 K.
Boosting DHW heating
The booster heating function is acti-
vated if a switching period is selected
for the fourth time phase.
The set temperature value for the
heating boost is adjustable in coding
address "58".
Control functions
External heating program changeover
The "External heating program chan-
geover" function is connected via
input "
aVD
". You can select which
heating circuits the heating program
changeover affects in coding address
"91":
Control unit
(cont.)
80
Function description
5692
745
GB
Содержание VC3
Страница 91: ...Internal extensions H1 and H3 A5 and A9 Connection and wiring diagram internal cont 91 Designs 5692 745 GB ...
Страница 96: ...Parts lists cont 96 Parts lists 5692 745 GB ...
Страница 97: ...Parts lists cont 97 Parts lists 5692 745 GB ...
Страница 98: ...Parts lists cont 98 Parts lists 5692 745 GB ...
Страница 99: ...Parts lists cont 99 Parts lists 5692 745 GB ...
Страница 100: ...Parts lists cont 100 Parts lists 5692 745 GB ...
Страница 101: ...Parts lists cont 101 Parts lists 5692 745 GB ...
Страница 103: ...Service Service Service Service Commissioning service reports cont 103 Commissioning service reports 5692 745 GB ...
Страница 109: ...109 5692 745 GB ...
Страница 110: ...110 5692 745 GB ...
Страница 111: ...111 5692 745 GB ...