Viessmann Vitodens 222-F Installation And Service Instructions For Contractors page 56

Codes
Coding level 1
(cont.)
Coding
Coding in the delivered condition
System design
00:2 One heating circuit without mixer
A1 (heating circuit 1)
Value, ad- Description
dress 00: ...
2 One heating circuit without mixer A1 (heating circuit 1) (code is set automatically)
4 One heating circuit with mixer M2 (heating circuit 2)
6 One heating circuit without mixer A1 (heating circuit 1)
One heating circuit with mixer M2 (heating circuit 2)
(code is set automatically)
8 One heating circuit with mixer M2 (heating circuit 2)
One heating circuit with mixer M3 (heating circuit 3)
10 One heating circuit without mixer A1 (heating circuit 1)
Two heating circuits with mixer M2 (heating circuit 2) and M3 (heating circuit 3)
(code is set automatically)
Coding in the delivered condition
Internal circulation pump function
51:0 The internal circulation pump al-
ways starts when there is a heat
demand.
Subscriber no.
77:1 LON subscriber number (only for
weather-compensated control
units)
Detached house/apartment building
7F:1 Detached house (only for weather-
compensated control units)
56
Possible change
00:4 For system schemes, see the follow-
to ing table:
00:10
Possible change
51:1 System with low loss header:
The internal circulation pump only
starts upon heat demand if the burn-
er is running.
Circulation pump stops on expiry of
the run-on time.
51:2 System with heating water buffer
cylinder:
The internal circulation pump only
starts upon heat demand if the burn-
er is running.
Circulation pump stops on expiry of
the run-on time.
77:2 LON subscriber number adjustable
to from 1 to 99:
77:99 1 - 4 = Boiler
5 = Cascade
10 - 97 = Vitotronic 200-H
98 = Vitogate
99 = Vitocom
7F:0 Apartment building
Holiday program and time program
for DHW heating can be set sepa-
rately