78
Coding in the delivered condition
Possible change
3F:0
Internal circulation pump
stays in control mode at
signal "External
demand"
3F:1
Internal circulation pump
stops at signal "External
demand"
3F:2
Internal circulation pump
starts at signal "External
demand"
51:0
Internal circulation pump
always starts when there
is a heat demand
51:1
System with low loss
header:
When there is a heat
demand, the internal circu-
lation pump only starts
when the burner is opera-
tional (with pump run-on).
51:2
System with heating water
buffer cylinder:
When there is a heat
demand, the internal circu-
lation pump only starts
when the burner is opera-
tional (with pump run-on).
52:0
Without flow temperature
sensor for low loss
header
52:1
With flow temperature sen-
sor for low loss header
(automatic recognition)
54:0
Without solar thermal
system
6E:50
Do not adjust
76:0
Without LON communi-
cation module (only for
weather-compensated
control units)
76:1
With LON communication
module (automatic recog-
nition)
77:1
LON subscriber number
(only for weather-com-
pensated control units)
77:2
to
77:99
LON subscriber number,
adjustable from 1 to 99:
1 - 4 = Boiler
5 = Cascade
10 - 98 = Vitotronic 200-H
99 = Vitocom
Note
Allocate each number only
once.
Code 2
General/Group "1"
(cont.)
5457 552 GB