153
A set value for the boiler water tempera-
ture is established by the control unit as
a function of the following parameters:
■ Outside temperature
■ Heating curve
■ Set DHW temperature.
The determined set boiler water temper-
ature is transferred to the burner control
unit. From the set and actual boiler water
temperatures, the burner control unit cal-
culates the modulation level and regu-
lates the burners accordingly.
The boiler water temperature is limited
by the electronic temperature controller
(85 °C, can be adjusted in code 2212)
and temperature limiter (100 °C).
Burner sequence
Initially the Stirling burner starts when a
heat demand is issued. If the set boiler
water temperature is not reached or if the
temperature drops further, the auxiliary
burner starts after a delay. If the Stirling
burner has developed a fault, the auxili-
ary burner starts immediately.
10 K
5 K
TB
8 K
4 K
A
B
C
D
E
F
B41/B42
B4
A
Temperature, heating water buffer
cylinder
B
Stirling burner off
C
Auxiliary burner off
D
Stirling burner on
E
Set heating flow temperature
F
Auxiliary burner on
TB Differential temperature (delivered
condition 8 K)
Codes 830, 1130 and 1430
Function description
Boiler temperature control
5618 294 GB
Service
Содержание C3HA
Страница 39: ...39 2 2x 1 Installation sequence Removing the front panel 5618 294 GB Installation ...
Страница 42: ...42 1 2 Installation sequence Removing the transport brackets 5618 294 GB ...
Страница 145: ...145 Checking internal appliance temperature sensor A Troubleshooting Repairs cont 5618 294 GB Service ...
Страница 151: ...151 Checking and replacing resistors B C A Troubleshooting Repairs cont 5618 294 GB Service ...
Страница 166: ...166 B C E D G F A A Type plate B Sheet metal parts assembly Parts lists Overview of the assemblies 5618 294 GB ...
Страница 181: ...181 Parts lists Control unit assembly cont 5618 294 GB Service ...
Страница 183: ...183 Parts lists Miscellaneous assembly cont 5618 294 GB Service ...
Страница 191: ...191 5618 294 GB ...