Operating instructions

93
Parameter address
A5:...
With heating circuit pump logic function: Heating cir-
cuit pump "OFF"
1 AT > RT
set
+ 5 K
2 AT > RT
set
+ 4 K
3 AT > RT
set
+ 3 K
4 AT > RT
set
+ 2 K
5 AT > RT
set
+ 1 K
6 AT > RT
set
7
to
AT > RT
set
– 1 K
15 AT > RT
set
– 9 K
Coding in the delivered condition Possible change
A6:36 Extended economy con-
trol disabled (only for
weather-compensated
control units)
A6:5
to
A6:35
Extended economy control
enabled, i.e. the burner and
heating circuit pump will
stop and the mixer will be
closed at a variable value,
adjustable between 5 and
35 °C plus 1 °C. The base
value is the adjusted out-
side temperature. This val-
ue is based on the actual
outside temperature and a
time constant, which takes
the cooling down of an
average building into con-
sideration.
A7:0 Without mixer economy
function (only for weath-
er-compensated control
units and heating circuits
with mixer)
A7:1 With mixer economy func-
tion (extended heating cir-
cuit pump logic):
Heating circuit pump also
"OFF":
■ If the mixer has been
closed for longer than
20 min.
Heating circuit pump
"ON":
■ If the mixer changes to
control function
■ If there is a risk of frost
Code 2
"Heating circuit ..."/group 5
(cont.)
5772 909 GB
Service