Viessmann Series B2HA 40, Инструкция по установке и обслуживанию

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99
Coding in the delivered condition Possible change
A2:3
to
A2:15 Reduced priority applied to
mixer (the heating circuit
receives a reduced amount
of energy)
A3:2 Outside temperature be-
low 1 °C: Heating circuit
pump "ON"
Outside temperature
above 3 °C: Heating cir-
cuit pump "OFF" A3:-9
to
A3:15 Heating circuit pump "ON/
OFF" (see following table)
!
Please note
When selecting a value below 1 °C, there is a risk of pipes outside the thermal
envelope of the building freezing up.
The standby mode in particular should be taken into consideration, e.g. during
holidays.
Parameter Heating circuit pump
address A3:... "On" "Off"
-9 -10 °C -8 °C
-8 -9 °C -7 °C
-7 -8 °C -6 °C
-6 -7 °C -5 °C
-5 -6 °C -4 °C
-4 -5 °C -3 °C
-3 -4 °C -2 °C
-2 -3 °C -1 °C
-1 -2 °C 0 °C
0 -1 °C 1 °C
1 0 °C 2 °C
2
to 1 °C
to 3 °C
to
15 14 °C 16 °C
Coding in the delivered condition Possible change
A4:0 With frost protection (only
for weather-compensa-
ted control units). A4:1 No frost protection; this set-
ting is only possible if code
"A3:-9" has been selected.
Code 2
Heating circuit 1, heating circuit 2, heating…
(cont.)
5623 520 GB
Service