DIVAtop HC
33
EN
cod. 3540S840 - 02/2010 (Rev. 00)
fig. 20 - Gas valve
to
Pressure point upstream
B
Pressure point downstream
C
Modureg electrical connection
D
Protective cap
E
Minimum pressure adjustment
F
Modureg
G
Minimum pressure adjustment
I
Gas valve electrical connection
M
Pressure gauge
R
Gas outlet
S
Gas inlet
Heating power adjustment
To adjust the heating power, switch the boiler to TESTsec. 4.1 mode (see ). Press the
heating buttons
(details 3 and 4 -
) to fig. 1increase or decrease the power (min. = 00
- max. = 100). Press the
RESET
button within 5 seconds and the max. power will remain
that just set. Exit TEST
mode (
see sec. 4.1).
Lighting power adjustment
To adjust the lighting power, switch the boiler to TEST mode (see sec. 4.1). Press the
DHW buttons
(details 1 and 2 -
) to increase or decrease the powerfig. 1 (min. = 00 -
max. = 60). Press the
RESET
button within 5 seconds and the ignition powerwill remain
that just set. Exit
TEST
mode (see sec. 4.1).
4.2 System start-up
B
Checks to be made at first ignition, and after all maintenance operations that
involved disconnecting from the systems or an intervention on safety devices
or parts of the boiler:
Before lighting the boiler
•
Open any on-off valves between the boiler and the systems.
•
Check the tightness of the gas system, proceeding with caution and using a soap
and water solution to detect any leaks in connections.
•
Check the correct preloading of the expansion tank (ref. sec. 5.3)
•
Fill the water system and make sure that all air contained in the boiler and the sys-
tem has been vented by opening the air vent valve on the boiler and any vent valves
on the system.
•
Make sure there are no water leaks in the system, hot water circuits, connections or
boiler.
•
Check the correct connection of the electric system and the functioning of the earth
system. l
•
Check that the gas pressure value for heating is as required.
•
Make sure there are no flammable liquids or materials in the immediate vicinity of
the boiler
Checks during operation
•
Ignite the appliance as described in sec. 2.3.
•
Check the airtightness of the fuel circuit and water systems.
•
Check the efficiency of the flue and air-fume ducts while the boiler is working.
•
Check that the water is circulating properly between the boiler and the systems.
•
Make sure that the gas valve modulates correctly in both the heating and hot water
production phases.
•
Check the proper ignition of the boiler by performing various tests, turning it on and
off with the room thermostat or remote control.
•
Make sure that the fuel consumption indicated on the meter corresponds to that giv-
en in the technical data table in sec. 5.3.
•
Make sure that with no call for heating the burner correctly ignites on opening a hot
water tap. Check that during heating operation, on opening a hot water tap, the heat-
ing circulator stops and there is a regular production of hot water.
•
Check the parameters are programmed correctly and perform any required custom-
ization (compensation curve, power, temperatures, etc.)
4.3 Maintenance
Periodical check
To ensure proper operation of the unit over time, have qualified personnel carry out a
yearly check, providing for the following:
•
The control and safety devices (gas valve, flowmeter, thermostats, etc.) must func-
tion correctly.
•
The fume exhaust circuit must be perfectly efficient.
(Sealed chamber boiler: fan, pressure switch, etc. - The sealed chamber must be
tight: seals, cable glands, etc.)
(Open chamber boiler: anti-backflow device, fume thermostat, etc.)
•
The air/fume terminal and ducts must be free of obstructions and leaks
•
The burner and exchanger must be clean and free of deposits. For cleaning do not
use chemical products or wire brushes.
•
The electrode must be free of scale and properly positioned.
•
The gas and water systems must be tight.
•
The water pressure in the cold water system must be approx. 1 bar; otherwise bring
it to that value.
•
The circulating pump must not be blocked.
•
The expansion tank must be filled.
•
The gas flowrate and pressure must match that given in the respective tables.
A
The boiler casing, control panel and aesthetic parts can be cleaned with a soft
damp cloth, if necessary soaked in soapy water. Do not use any abrasive de-
tergents and solvents.
Opening the casing
To open the boiler casing:
1.
Undo the screws A (see fig. 21).
2.
Turn the casing (see fig. 21).
3.
Lift the casing.
B
Before carrying out any operation inside the boiler, disconnect the power supply
and close the gas cock upstream
fig. 21 - Opening the casing
Combustion analysis
1.
Insert the probe into the flue;
2.
Check that the relief valve is connected to a drain funnel;
3.
Activate TEST mode;
4.
Wait 10 minutes for the boiler to stabilize;
5.
Take the measurement.
4.4 Troubleshooting
Diagnostics
The boiler is equipped with an advanced self-diagnosis system. In case of a boiler fault, the
display will flash together with the fault symbol (detail 22 - fig. 1) indicating the fault code.
There are faults that cause permanent shutdown (marked with the letter “
A
”): to restore
operation just press the RESET button (detail 8 - fig. 1) for 1 second or RESET on the
optional remote timer control if installed; if the boiler fails to start, it is necessary to first
eliminate the fault.
Other faults (marked with the letter “
F
”) cause temporary shutdowns that are automati-
cally reset as soon as the value returns within the boiler's normal working range.
+
M
D
E
G
C
F
F
I
B
A
R
S
A
A
1
3
2
Содержание DIVAtop HC
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