22
Instructions for the user
1.14 Boiler operation
1.14.1 Switching on
DANGER
It is presumed that the boiler has been installed by a qualified installer, it has been commissioned and is ready to operate correctly.
•
Open the gas shut-of cock.
•
Turn the master switch installed ahead of the boiler to ON.
•
The display turns on and indicates the function currently active (see
Interpreting boiler status from display indications
on page
13
).
•
Select boiler operating mode by pressing
button on the touch-screen: OFF, SUMMER, WINTER, CH ONLY (see
Selecting the operating
mode
on page
15
).
•
Set desired CH temperature (see
CH function
on page
22
).
•
Set desired DHW temperature (see
DHW function
on page
23
).
•
If one or more ambient probes or a thermostat are present, set the desired ambient temperature value and the weekly programming.
WARNING
Should the boiler be left inactive for a long time, particularly when boiler is propane-fired, ignition might be difficult.
Before starting the boiler switch on another gas powered device (e.g. kitchen range).
Beware that even by following this procedure, the boiler might still experience some starting difficulties and shut down once or
twice. Press the RESET button to restore boiler operation.
1.14.2 CH function
Set desired heating water temperature via
CH +/-
buttons.
Heating temperature adjustment range depends on the selected operating range.:
•
standard range: from 20°C to 78°C (pressing
CH +/-
);
•
reduced range: from 20°C to 45°C (pressing
CH +/-
).
Operation range selection is to be implemented by a installer or an authorized Service Centre (see par.
Selecting the operating range in heating
mode
on page
55
).
During temperature setting, the CH
symbol on the screen lashes and the CH setting is displayed.
For models with double or triple outlet for high-temperature and low-temperature zones (V, MV, Z and MZ versions) the boiler operating range
in CH mode must be set to standard range. The mixing valve on the low-temperature zone low will adjust the low to the correct temperature,
based on the signal coming from the relevant zone.
When the central heating system requests heat from the boiler, the LCD displays the CH symbol ixed on
and the current heating low
water temperature. The burner symbol
only shows while the burner is operating. The waiting time between one boiler ignition and the
following one, used to prevent boiler frequent turning on and of, ranges between 0 and 10 minutes (default value: 4 min.), and can be edited
with the
P11
parameter.
Should water temperature in the system fall below set minimum value, between 20°C and 78°C (default value for standard range: 40°C , default
value for reduced range: 20°C) to be edited with the
P27
parameter, the waiting time is reset and the boiler re-ignites (see par.
Selecting the
operating range in heating mode
on page
55
).
Содержание MADEIRA SOLAR KRBS 12
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