Ariston ACO 35 MFFI, Инструкции по установке и обслуживанию

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39
Test Function
t
The test function is used to enable the engineer/installer to check
the combustion rate (see Section 3.6.3).
The P.C.B. allows the boiler to be forced to the maximum or
minimum power. Enable the test function, two dashes will appear on
the right-hand display (see Fig. 3.27).
To select operation at maximum power, press the programming key
, two dashes will appear at the top of the right-hand display (see
Fig. 3.29).
This function is disabled when you press the reset key to quit the
adjustments menu.
To select operation at minimum power, press the programming key
, two dashes will appear at the bottom of the right-hand display
(see Fig. 3.28). This function is disabled when you press the reset
key
“H” to quit the adjustments menu.
Note : The boiler can be forced to the maximum and minimum power
even without enabling the test function via the adjustments
menu:
a - by pressing the Reset key for 5 seconds, the boiler is
automatically forced to test mode and t-- will be displayed, the
boiler is now in the test mode for the maximum heating power, to
force the boiler to maximum output for hot water it is necessary
to press the and keys together, two dashes appear at the
top of the right-hand display (see Fig. 3.29). This function is
disabled by pressing the reset key .
b - by pressing the key, the boiler is forced to operate at
minimum power, two dashes appear at the bottom of the right-
hand display (Fig. 3.28). This function is disabled by pressing
the reset key.
max power Central Heating
minimum power
F
IG
. 3.27
F
IG
. 3.28
With parameter
P5
it is necessary to adjust the heat curve to one of
those shown in Fig. 3.26. By using the programming keys
and , the curve may be changed to select the required curve
for the system.
WARNING
If a curve is selected for an under-floor
heating a system safety thermostat must
be connected to the main terminal board
(see paragraph 2.12)
Fig. 3.26
max power DHW
F
IG
. 3.29
Flow temperature (°C)
External temperature (°C)