Technical data

169
Coding – Vitocontrol-S, VD2/CT3/CM2
Coding 2 (continued)
Coding in the factory setting Possible change
Multi-boiler control (continued)
3d: 1 Output balance for gross calorific strategy and net
calorific strategy 1
3d: 0 No output statement
Please note:
Vitocontrol-S, VD2/CT3/CM2 controls only in
accordance with net calorific strategy 2
3E: 0 Common supply pump ON/OFF subject to heat
demand
3E: 1 Common supply pump OFF, if external disable
(plug aVD) is active
3F: 0 Without DHW tank priority for common supply
pump
3F: 1 With DHW tank priority for common supply pump
General
40:125 Actuator operating time for isolation valve,
three-way mixing valve or mixing valve motor in
conjunction with permanent return temperature
control:
125 seconds
40: 5
to
40:199
Operating time adjustable from 5 to 199 seconds
41: 31 No ECO threshold boiler 1 41:–30
to
41:+3
0
ECO threshold boiler 1 adjustable
from –30 to +30˚C / –22 to +86˚F
42: 31 No ECO threshold boiler 2 42:–30
to
42:+3
0
ECO threshold boiler 2 adjustable
from –30 to +30˚C / –22 to +86˚F
43: 31 No ECO threshold boiler 3 43:–30
to
43:+3
0
ECO threshold boiler 3 adjustable
from –30 to +30˚C / –22 to +86˚F
44: 31 No ECO threshold boiler 4 44:–30
to
44:+3
0
ECO threshold boiler 4 adjustable
from –30 to +30˚C / –22 to +86˚F
45: 60 Start-up integral threshold set to
60 Kelvin × minute
45: 1
to
45:255
Start-up integral threshold adjustable
from 1 to 255 Kelvin × minute
Please note:
If the threshold is exceeded, one boiler or one
burner stage is switched ON
46: 40 Shutdown integral threshold set to
40 Kelvin × minute
46: 1
to
46:255
Shutdown integral threshold adjustable
from 1 to 255 Kelvin × minute
Please note:
If the threshold is exceeded, one boiler or one
burner stage is switched OFF
47: 15 Shutdown differential set to 15˚C / 27˚F 47: 2
to
47: 30
Shutdown differential adjustable
from 2 to 30˚C / 3.6 to 54˚F
Please note:
One boiler or one burner stage will be switched
OFF, if actual supply temperature exceeds the set
supply temperature by this value
5351 340 v1.4