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Atag Q 25S - Page 15

Atag Q 25S
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Adjusting
the
type
of
installation
The boiler is designed in such a way that it will
adjust itself automatically to what is necessary for
a normal heating system. In some cases
the
installation may have convectors or
complete
underfloor heating.
One can easily choose heating
installation
adjustments appropriate for the system such
as
maximum water-flow temperature or for
the
warming up of the installation after a night
period.
Adjustment goes as follows:
+
-
Store
Mode
Step
Reset
-
Press (from the Technical) reading the Mode
key once;
Press the Step key twice;
The display will show 2 01.
Press the + or the - key to alter the type
of
installation according to the table below;
Press the Store key to confirm the setting;
The display will flash once.
Press the Mode key once;
The display will show StbY for a short while
and
will return to the Technical reading.
-
-
-
-
tem
p
erature
01
Ra
di
ators;
a
i
r
heat
ing;
c
onv
ect
o
rs
85
°
C
Q
a
ddi
t
ion
a
l
heat
ing
0
3
U
n
der
f
loo
r
heat
ing wi
t
h
ra
di
at
o
rs
as
addi
t
ional h
eat
ing
60
°
C
= factory setting
When a type of installation has been chosen with a low water-
flow
temperature
it is possible that in case of a severe winter period the temperature of
the
heating system will need to be increased slightly. In such situations
the
installation choice may need to be changed, so that a higher flow
temperature
can be chosen. This adjustment would normally be carried out by your
installer
during the installation and commissioning.
15
Operating
instructions
04
f
ull unde
r
f
loor
heat
ing
50
°
C
02
Ra
di
at
o
rs
wi
t
h l
ar
g
e
surface
areas
or
und
er
f
loo
r
h
eat
ing
as
70
°
C
S
e
l
ect
ion T
ype
of
in
sta
ll
at
ion
Flow w
ater

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