- 58 -
INST
ALLA
TION
COMMISSIONING
essary to set this parameter based on the
efficiency of the heating plant in order to op-
timise the flow temperature (Fig. 7.16).
E.g. In order to have a flow temperature at
the heating plant of 60°C with an external
temperature of -5°C, set a K at 1.5 (sec-
tioned line in Fig. 7.16).
Sequence for setting the K coefficient
• Enter in "programming mode" by pressing
keys 11 - 12 - 13 (Fig. 7.17) for 10 seconds
at the same time until the letters
Pr
that al-
ternate with code 01 are displayed on the
LCD display, indicating that "parameter
01
, has been activated (Fig. 7.18).
Fig. 7.17
11
12
13
14
Fig. 7.18
• Scroll the various parameters using keys
12 or 13 until the letters
Pr
that alternate
with code
15
are displayed on the LCD
display, indicating that "parameter 15"
(Fig. 7.19) has been activated.
Fig. 7.19
• Press keys 11 and 13 (Fig. 7.17) at the
same time until the value of parameter 15
(Fig. 7.20) is displayed on the LCD dis-
play.
Fig. 7.20
• Using keys 12 or 13 it is possible to
change the value of parameter 15 from a
minimum of
01
to a maximum of
60
based
on the selected bend of the K coefficient
in Fig. 7.16 (the value read on the display
corresponds to K coefficients decimal val-
ues).
• By pressing key 11 (Fig. 7.17) confirma-
tion of the inserted value is obtained.
• Press keys 11 and 12 (Fig. 7.17) at the
same time to exit without changing the
value (return to the parameters list Fig.
7.19).
