- 61 -
INST
ALLA
TION
COMMISSIONING
When installing the external probe it is nec-
essary to set this parameter based on the
effi ciency of the heating plant in order to op-
timise the fl ow temperature ( Fig. 7.16 ).
E.g. In order to have a fl ow 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 coeffi cient
• Enter in "programming mode" by pressing
keys 9 - 10 - 11 ( 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
9
10
11
12
Fig. 7.18
• Scroll the various parameters using keys
10 or
11 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 9 and 11 ( Fig. 7.17 ) at the same
time until the value of parameter 15 ( Fig.
7.20 ) is displayed on the LCD display.
Fig. 7.20
• Using keys 10 or 11 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 coeffi cient in Fig.
7.16 (the value read on the display corre-
sponds to K coeffi cients decimal values).
• By pressing key 9 ( Fig. 7.17 ) confi rmation
of the inserted value is obtained.
• Press keys 9 and 10 ( Fig. 7.17 ) at the same
time to exit without changing the value (re-
turn to the parameters list Fig. 7.19 )
• Press keys
9 -
10 -
11 ( Fig. 7.17
) at the
Summary of Contents for Activ A 120V
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