Technical data

Coding
47
Coding Level 2 (continued)
Overview of coding addresses (continued)
Coding (factory default setting) Possible change
Boiler circuit, mixing valve circuit
A4:0 With frost protection A4:1 No frost protection, adjustment
only possible if coding address ”A3: -9”
has been selected.
Note:
Observe the note for code ”A3”.
A5:5 With heating circuit pump logic function
(economy circuit): Heating circuit pump
”
O
F
F
”
i
f
t
h
e
o
u
t
d
o
o
r
t
e
m
p
e
r
a
t
u
r
e
A5:0 Without heating circuit pump logic function
(
e
c
o
n
o
m
y
c
i
r
c
u
i
t
)
:
H
e
a
t
i
n
g
c
i
r
c
u
i
t
p
u
m
p
”OFF” if the outdoor temperature
(AT) is 1 K higher than the room
temperature setpoint (RTset)
AT > RTset + 1 K
A5:1
to
A5:15
With heating circuit pump logic function:
Heating circuit pump ”OFF”, if (see the
following table)
Parameter
c
o
d
i
n
g
a
d
d
r
e
s
s
With heating circuit pump logic
f
u
n
c
t
i
o
n
:
H
e
a
t
i
n
g
c
i
r
c
u
i
t
p
u
m
p
c
o
d
i
n
g
a
d
d
r
e
s
s
A5:...
f
u
n
c
t
i
o
n
:
H
e
a
t
i
n
g
c
i
r
c
u
i
t
p
u
m
p
OFF, if
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
to
AT > RTset - 9 K
Coding (factory default setting) Possible change
Boiler circuit, mixing valve circuit
A6:36 Extended economy function disabled A6:5
to
A6:35
Extended economy mode is enabled, i.e. the
burner and heating circuit pump are switched
OFF and the mixing valve will be closed at
a variable value that is adjustable between 5
and 35°C plus 1°C. This value is based on the
dampened outdoor temperature, comprising
the actual outdoor temperature and a time
constant that 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 was closed longer than 20 min. Heating
p
u
m
p
”
O
N
”
:
v
a
l
v
e
w
a
s
c
l
o
s
e
d
l
o
n
g
e
r
t
h
a
n
2
0
m
i
n
.
H
e
a
t
i
n
g
pump ”ON”:
H If the mixing valve changes to control mode
or
H If there is a risk of frost
A8:1 Heating circuit with mixing valve creates
a demand for the circulation pump
A8:0 Heating circuit with mixing valve creates no
demand for the circulation pump
5418 911 v1.6