Viessmann Vitotronic 100 GC1 Installation And Service Instructions Manual page 22

Heating system designs
System version 6
(cont.)
Coding must be set on every Vitotronic 100, GC1.
Vitotronic 100, GC1
Required coding
01: 2 Multi-boiler system with cascade control via LON BUS
02: 2 Modulating burner operation
Only with Vitotronic 100, GC1 for low temperature boiler:
03: 1 Oil fired operation (non-reversible)
Setting the boiler number on the Vitotronic of
07: 2 boiler 2
07: 3 boiler 3
07: 4 boiler 4
Only with Vitotronic 100, GC1 for Vitocrossal 300:
0d: 0 without Therm-Control
Setting the LON participant number on the Vitotronic of
77: 2 boiler 2
77: 3 boiler 3
77: 4 boiler 4
Automatic changeover
Only with Vitotronic 100, GC1 for low temperature boiler:
Connecting the T1 temperature sensor to plug aJA
4A 1
Only with Vitotronic 100, GC1 for low temperature boiler:
Connecting the T2 temperature sensor to plug aJB
4b: 1
Vitotronic 300-K, MW1S
Required coding
00: 3, Without system circuit A1
00: 4,
00: 7,
or
00: 8
Vitotronic 300-K, MW1S with
35: 1 one Vitotronic 100, GC1
35: 2 two Vitotronic 100, GC1
35: 3 three Vitotronic 100, GC1
39: 1 Setting up Vitocrossal 300 as permanent lead boiler
to
39: 4
3C: 1 Condensing strategy 1
22
*1
*1