Installation, user and maintenance manual
– AY Condensing line, AY series
39
The appliance switches off;
3.
the system water temperature slowly drops (loses heat to the environment);
4.
the intake water temperature r38 °C (= se differential);
5.
the appliance turns back on: heating starts again. The cycle is repeated.
6.
The following instructions give a detailed description of how to configure the hydrau-
lic parameters in menu 3 (or menu 4) on the machine’s controller.
Hydraulic parameter settings
You will need: the controller’s display sequentially shows the operating data (tempe-
rature, delta T°) regarding the current mode (e.g.: heating). Special key provided with
the appliance.
See procedure "HOW TO ACCESS THE MENUS" (Paragraph 3.2 ON-BOARD ELEC-
1.
TRONICS
→
18) and proceed as described in steps "1" to "5".
The display will now flash "0.". Turn the knob until menu 3 displays (the display
2.
shows "3.") or menu 4 (the displays shows "4.").
For example: to set the parameters of menu 3:
•
The display shows “3.”. Press the knob to access the menu. the display shows
1.
the first of the menu parameters: "3.73" or "3.160" (= menu 3, parameter "73" or
"160").
The display shows "3.73" or "3.160". To access a parameter, press the knob: the
2.
displays shows the preset value (e.g. "1"), flashing, to indicate that it can be
modified.
Press again to confirm "1" (= outlet water thermostat control); to modify the
3.
value, turn the knob until "0" displays: press to confirm "0" (= intake water ther-
mostat control).
The display now shows the current parameter "3.73" or "3.160" again: the para-
4.
meter has been set to its new value.
Turn the knob to display the next parameter. The display shows: "3.75" or "3.161".
5.
To access a parameter, press the knob: the displays shows the preset value (e.g.
"60"), flashing, to indicate that it can be modified.
Press again to confirm "60" (= water temperature setpoint); to modify the value,
6.
turn the knob until the desired value displays (e.g. "40"): press again to confirm
"40" (= water temperature setpoint);
The display now shows the current parameter "3.75" or "3.161" again: the para-
7.
meter has been set to its new value.
Turn the knob to display the next parameter. The display shows: "3.76" or "3.162".
8.
To access a parameter, press the knob: the displays shows the preset value (e.g.
“-10"), flashing, to indicate that it can be modified.
Press again to confirm “-10" (= water temperature differential); to modify the
9.
value, turn the knob until the desired value displays (e.g. “-2"): Press again to
confirm “-2" (= water temperature differential).
The display now shows the current parameter "3.76" or "3.162" again: the para-
10.
meter has been set to its new value.
To quit menu 3, turn the knob clockwise until the quit screen displays: "E". The di-
11.
splay shows “3.”. E": press the knob. The display will now show the current menu
"3.". To exit the menu selection screen, turn the knob clockwise until “E” displays:
press to confirm.
The controller’s display now sequentially shows, as at the beginning, the operating
data (temperature, delta T°) regarding the current mode (e.g.: heating).
