Heating Circuit 1, Heating Circuit 2, Heating Circuit 3 - Viessmann FB2B Installation And Service Instructions Manual

Solar
(cont.)
Coding in the delivered condition
Reducing stagnation time
0A:5 To protect the system
components and heat
transfer medium, the
speed of the solar circuit
pump is reduced when
the differential between
the actual cylinder tem-
perature and set cylinder
temperature is less than
5 K.
Nominal flow rate
0F:70 The flow rate in the col-
lector circuit at the maxi-
mum pump speed is set
to 7 l/min.

Heating circuit 1, heating circuit 2, heating circuit 3

Coding
Coding in the delivered condition
Summer eco function outside temperature
A5:5 With heating circuit pump
logic function (economy
circuit): Heating circuit
pump "OFF" when the
outside temperature (AT)
is 1 K higher than the set
room temperature (RT
AT > RT
Parameter address
A5:...
1
2
3
4
Possible change
0A:0
to
0A:40
0F:1
to
0F:255
Possible change
A5:0
A5:1
to
A5:15
)
set
+ 1 K
set
With heating circuit pump logic function: Heating cir-
cuit pump "OFF"
AT > RT + 5 K
set
AT > RT + 4 K
set
AT > RT + 3 K
set
AT > RT + 2 K
set
Code 1
The differential between
the set cylinder tempera-
ture and the start point for
reducing the stagnation
time can be adjusted from
0 to 40 K.
Flow rate in the collector
circuit adjustable from 0.1
to 25,5 l/min
Without heating circuit
pump logic function
With heating circuit pump
logic function: Heating cir-
cuit pump "OFF"; see the
following table
71