4
Separate hot water tank
In case a separate hot water tank is connected to the boiler, you
must use an electrical 3-way-valve 24 V (Honeywell VC 8010, "2
wire + common), a spring assisted 3-way-valve or an external
sanitary pump.
The wiring has to be done according the diagram in figure …..
If using a sanitary thermostat or sanitary NTC, it has to be connected
to pos 20 + 21 of the screw terminals.
The standard flow temperature for loading the hot water tank is 80 °C.
PUT INTO OPERATION
1.
Fill and purge the installation. The water pressure in the boiler
has to be between 1,5 and 2 bars. The boiler
(not the installation)
is purged by the automatic purge, which is mounted on top of
the boiler.
2.
Check all gas and water connections for leakages. Purge the
gas tube.
3.
Check if the type of gas and the nominal supply pressure, as
mentioned on the sticker below the typeplate, are present.
4.
Connect the plug in the wall-socket. Turn on the main switch on
the boiler. After a few moments the boiler will automatically ignite.
5.
Set the room thermostat to the highest value and heat up the
installation. After this set the room thermostat to the lowest
value.
6.
Purge the installation again and refill if necessary.
PUT OUT OF OPERATION
By pushing the - button for 3 seconds, the boiler is off. The display
will show: OFF.
The anti-frost protection is still enabled.
To put the boiler back to normal operation again, push
the - button for 3 seconds again.
USING THE BOILER
Your system should be serviced at least once a year
by a qualified engineer.
If the boiler is subject to heavy use, it may require
servicing more than once a year - consult your service
engineer for advice.
Starting the burner:
In normal operation, the burner starts automatically
whenever the boiler temperature falls below the set
temperature.
After the mains is connected, or after a reset, the 3-way valve
(if present) will be activated for 15 seconds in direction central
heating. During this time the pump is off.
Subsequently the pump is activated for 1 minute. Finally the
3-way-valve is diverted to sanitary. If there is no heatrequest within
24 hours, this procedure will be repeated to prevent blocking of the
3-way-valve and pump.
The control panel contains 6 buttons and a 4-digit display
(see figure)
Heating system pressure
Your system is fitted with a heating safety valve set to 3 bar, with a
pressure gauge. Read the heating circuit pressure on the combined
temp/pressure gauge on the control panel:
Ensure that the water in the system is always pressurised. When
cold, and the air in the system has been vented, the pressure gauge
must show a pressure between 1 and 2 bar, depending on the
height of the building. (1 bar = 5m / 1.5 bar = 10 m et 2 bar = 15 m).
To add water, open the filling valve. Close the filling valve tightly after
filling. Vent the air in the system to get an accurate water pressure
reading.
(See chapter, page 10: filling the hot water and heating circuits)
.
Safety Valves
If water discharges from any of the safety valves, switch the boiler
off and call a service engineer.
INSTALLATION
USER GUIDE
