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Circulation
The Circulation function can be used for controlling a circulation pump.
For the control logic, 5 different variants are available:
• Thermal
• Timer
• Thermal + Timer
• Demand
• Demand + Timer
If one of the variants is selected, the corresponding adjustment channels will appear.
Thermal
The temperature at the allocated sensor is monitored. The allocated relay switches
on when the temperature falls below the adjusted switch-on temperature. If the
temperature exceeds the switch-off temperature, the relay switches off.
Timer
The relay is switched on during the adjusted time frames, outside of them it switch-
es off. For information on how to adjust the timer, see below.
Thermal + Timer
The relay operates when the switch-on conditions
of both above mentioned variants are fulfi lled.
Demand
The allocated FS08 fl ow switch is monitored for
circuit continuity. If circuit continuity is detected
at the fl ow switch, the relay switches on for the
adjusted runtime. After the runtime has ended, the
relay is switched off. During the adjusted break
time, the relay remains switched off even if conti-
nuity is detected at the fl ow switch.
Circulation
sensor
Relay
Solid fuel boiler
Arrangement / Opt. functions / Add new function / Solid fuel boiler
Adjustment
channel
Description
Adjustment range /
selection
Factory setting
Relay
Relay selection
system dependent
system dependent
Sen. Boiler Solid fuel boiler sensor selection system dependent
system dependent
Sen. Store
Store sensor selection
system dependent
system dependent
D
Ton
Switch-on temperature
difference
1.0 … 30.0 K
6.0 K
D
Toff
Switch-off temperature
difference
0.5 … 29.5 K
4.0 K
DΤ
set
Set temperature difference
1.5 … 40.0 K
10.0 K
Min. speed Minimum speed
(20) 30 … 100 %
30 %
Tmax St.
Maximum temperature
10 … 95 °C
60 °C
Tmin boiler Minimum temperature
10 … 95 °C
60 °C
Funct.
Activation / Deactivation
Activated, Deactivated Deactivated
The Solid fuel boiler function can be used for transferring heat from a solid fuel
boiler to a store.
The allocated relay is energised when all switch-on conditions are fulfi lled:
• the temperature difference between the allocated sensors has exceeded the
switch-on temperature difference
• the temperature at the solid fuel boiler sensor has exceeded the minimum tem-
perature
• the temperature at the store sensor has fallen below the maximum temperature
When the Set temperature difference is exceeded, pump speed control starts.
For every deviation of 2 K, the pump speed will be adjusted by 10 %.
Relay
Store sensor
Solid fuel boiler sensor
Summary of Contents for SC5.14
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