Vitodens 200-W B2HA 112, 150 Service
63
5683 710 - 09
Coding 2
Heating Circuit 1, 2 and 3
(continued)
Coding in the factory setting
Possible change
A4:0
With frost protection
A4:1
No frost protection; this setting is
only possible if code “A3:-9” has
been selected.
Note:
“Important” also coding
address “A3”.
A5:5
With heating circuit pump logic
function (economy mode):
Heating circuit pump “OFF”
when the outside temperature
(AT) is 1 K higher than the set
room temperature (RTset) AT >
RTset + 1 K
A5:0
Without heating circuit pump logic
function.
A5:1
to
A5:15
With heating circuit pump logic
function: Heating circuit pump
“OFF”; see following table:
Parameter address A5:...
With heating circuit pump logic function: Heating circuit pump “OFF”
1
AT > RTset + 5 K
2
AT > RTset + 4 K
3
AT > RTset + 3 K
4
AT > RTset + 2 K
5
AT > RTset + 1 K
6
AT > RTset
7
to
15
AT > RTset - 1 K
AT > RTset - 9 K
Coding in the factory setting
Possible change
A6:36
Extended economy function
disabled
A6:5
to
A6:35
Extended economy function
enabled, i.e. the burner and heating
circuit pump will stop and the
mixing valve close at a variable
value, adjustable between 41 and
95°F (5 and 35°C) plus 1.8°F
(1°C). The base value
is the adjusted outside temperature.
This value is based on the actual
outside temperature and a time
constant, which takes the cooling
down of an average building into
consideration.
A7:0
Without mixing valve economy
function
A7:1
With mixing valve economy
function (extended heating circuit
pump logic):
Heating circuit pump also “OFF”:
- If the mixing valve has been
attempting to close for longer
than 20 minutes.
- Heating circuit pump “ON”:
If the mixing valve changes to
control function.
- If there is a risk of frost.
