Installation and operating instruction
Oil condensing boiler WTC-OB 18-B
6 Operation
83311002 1/2018-03 La
58-132
6.12 Special system parameters
System parameters can be set in the heating engineer level. In rare cases it may be
necessary to more closely adapt the WTC to the heating system using the
WCM Diagnostic Software.
For remote control with WCM-FS, the eBUS-Adapter WEAmust be supplied with
voltage via separate mains adapter.
Para-
meter
Description
Setting range
Unit
Factory setting
A0.1
System pressure and return sensor
/
–
A0.2
(1
Combustion chamber sensor
/
–
A0.3
(1
Water jacket temperature sensor
/
–
A4
Switch differential stage 2 off
-50 … 70
%
0
A5
Switch differential stage 2 on
-170 … -50
%
-100
A6
Symm. switch differential DHW/buffer
0 … 10
K
2
A7
minimum pump capacity
1 … 100
%
23
A15
(1
max temp differential flow/return temp.
20 … 60
K
50
A17
(1
combustion air temperature adjustment
50 … 150
%
100
A21
forced partial load capacity
1 … 2
–
1
A22
forced partial load capacity period
0 … 250
s
240
A23
(1
flame stabilisation capacity
1 … 2
–
2
A26
(1
pre-purge speed
40 … 100
%
100
A27
(1
ignition capacity
1 … 2
–
2
A28
(1
flame stabilisation time
–
s
10
A29
(1
option without oil preheating during operation
0 / 1
–
1
A32
(1
Fan adjustment ignition speed
90 … 100
%
100
A35
(1
activation SV stage 2 (at fan speed)
10 … 95
%
65
A36
(1
de-activation SV stage 2 (at fan speed)
10 … 95
%
60
A38
(1
permissible combustion chamber pressure in-
crease stage 1
0.1 … 6.0
mbar
0.4
A39
(1
permissible combustion chamber pressure in-
crease stage 2
0.1 … 6.0
mbar
0.8
A40
change-over valve control period
0.1 … 10.0
s
0.8
A41
(1
Post-purge speed
40 … 100
%
70
A43
max flue damper run time
3 … 25
s
25
(1
Parameter is safety relevant. Alterations are only permitted following consultation with the Weishaupt service de-
partment.
