160
The assignment of heating circuits must
be configured during remote control
commissioning.
Remote control affects the following heat-
ing circuit
Configuration
Vitotrol 200A
Vitotrol 300A
Vitotrol 200 RF
Vitotrol 300 RF
Heating circuit without mixer A1
H 1
Heating circuit 1
Heating circuit with mixer M2
H 2
Heating circuit 2
Heating circuit with mixer M3
H 3
Heating circuit 3
Note
One heating circuit can be assigned to
the Vitotrol 200A and 200 RF.
Up to three heating circuits can be
assigned to the Vitotrol 300A and
300 RF.
A maximum of 2 hardwired remote con-
trol units or 3 wireless remote controls
may be connected to the control unit.
If the assignment of a heating circuit is
later cancelled, reset coding address
"A0" in the "Heating circuit" group for
this heating circuit to 0 (fault message
bC, bd, bE).
Electronic combustion control unit
The electronic combustion controller uti-
lises the physical correlation between
the level of the ionisation current and the
air ratio λ. The maximum ionisation cur-
rent is achieved at an air ratio of 1 for all
gas qualities.
The ionisation signal is evaluated by the
combustion controller and the air ratio is
adjusted to a value between λ=1.24 and
1.44. This range provides for an optimum
combustion quality. Thereafter, the elec-
tronic gas valve regulates the required
gas volume subject to the prevailing gas
quality.
Function description
Assigning heating circuits to the remote control
5623 520 GB
