Baxi Roca NR-15/20 Instrucciones De Funcionamiento Y Mantenimento Para El Usuario página 5

Identification of valves
See Fig. 2.
1. Safety valve
2. CH flow valve
3. DHW outlet
4. Gas inlet cock
5. Cold water inlet
6. CH return valve
7. Heating Circuit fill valve.
8. Heating Circuit drain cock.
9. Mains water inlet.
Start-up
Ensure that the electrical connector is properly
positioned. It must be pushed fully home.
Remember that if the power supply to the boiler
is to be isolated, this connector must be
unplugged. See Fig. 3.
Open the front lid to gain access to the control
panel The green indicator lamp must be 'on'. See
Fig. 4. If the green lamp does not light up, it means
that no electricity is reaching the boiler. Please
check if any of the safety devices at the mains
supply entering your house are switched off.
Ensure that the Heating circuit pressure is 1.5
bar. If the fault code 03 is displayed on the screen,
it means that there is not enough pressure in the
Heating Circuit. The red lamp will light up. See
Fig. 5.
Check if the Central Heating flow and return
valves are in the correct position: they should be
fully open. See Fig. 6. To increase the pressure
in the Heating Circuit, turn the small square
handwheel of the fill point valve anti- clockwise
until reaching 1.5 bar. See Fig. 7.
Once this pressure (1.5 bar) has been reached,
close the valve. Then the fault code 03 will
disappear from the screen and the red lamp will
'go out'.
Ensure that the pump rotates. Press a
screwdriver against the slot on the shaft-end
and make it turn. See Fig. 8.
Ensure that the gas inlet cock (4) to the boiler is
open. See Fig. 2.
The boiler will not start operating unless the
ambient thermostat (optional) is on demand for
Heating.
Service temperature
Winter: Central Heating and Domestic
Hot Water
Press this symbol for a moment to programme
the boiler for Central Heating and Domestic Hot
Water. Please note that Domestic Hot Water has
priority over Central Heating. The temperatures
programmed in the boiler memory utility are as
follows:
55°C for Domestic Hot Water.
80°C for Central Heating
If the orange lamp lights up, it means that the
boiler is working.
Then, the information shown in Fig. 9 will be
displayed on the screen.The temperature will
rise until the maximum value selected is reached.
Summer: Domestic Hot Water
Press this symbol for a moment to programme
the boiler for Domestic Hot Water only. Then, the
information shown in Fig. 10 will be displayed on
the screen.
The temperature will rise until the maximum value
selected is reached.
Stop
Press this symbol for a moment to cancel
the service programmed. See Fig. 11.
In this position, a permanent anti-freeze
protection and pump 'lock-out' system is activated
(see section under "Permanent Monitoring
System").
To re-establish the service, press either
, as required.
Programming Options
Please note that the factory-set temperatures
may be altered as follows:
Central Heating Mode
Press for a moment. See Fig. 12. The
temperature digits will immediately flash for 10
seconds.
While the digits are flashing, press
wish to increase the temperature, or
wish to decrease it.
Once the new temperature has been set, it will
be automatically stored. The temperature range
goes from 30°C to 90°C.
Domestic Hot Water Mode
Press for a moment. See Fig. 13. The
temperature digits will immediately flash for 10
seconds.
While the digits are flashing, press
wish to increase the temperature, or
wish to decrease it.
Once the new temperature has been set, it will
be automatically stored. The temperature range
goes from 40°C to 60°C. Press
to re-establish the factory-set programme.
Cleaning
To clean the filter in the cold water inlet, please
proceed as described below:
Close the mains water inlet.
Open a hot water tap to reduce the pressure.
Using a 16-17AF spanner, or an adjustable
spanner, unscrew the cold water inlet assembly
(5) by turning it anti-clockwise. See Fig. 14.
Remove the filter and clean it. See Fig. 15.
After cleaning it, replace it by following the
operations in reverse order.
Finally, bleed the air that may have entered the
system. To do that, unscrew the air valve (3)
until water starts to come out. Then, close it. See
Fig. 14.
Maintenance
Must be performed once a year by a qualified
service engineer.
Fault Codes
If the red indicator lamp lights up, it means that
the boiler has 'locked out' because of a fault.
Press this symbol for 3 or 5 seconds and the
boiler will attempt to light up again. See Fig. 16.
If the boiler 'locks out' again, note down the fault
code number and call your installer or nearest
After-Sales Service.
However, if the fault code numbers are 03, 06,
07, 12, 14, 15 or 17, first check the following:
03: This means that there is not enough pressure
in the Heating Circuit. Check the pressure and
put it right by opening the fill point valve (7) until
reaching 1.5 bar. The boiler will start up
automatically.
06 or 14: There may be air pockets in the Heating
Circuit. Ensure that the air valve cap (10) is open.
See Fig. 17.
If the fault code were number 14, press
solving the problem.
07: If this code number is displayed, the boiler
will automatically start up once it has "recovered".
15: This means that the evacuation control
device for the products of combustion has been
activated due to a momentary backflow or
irregular outlet of the gases. Press
happens again, call your nearest After- Sales
Service. When you press
be displayed. If so, the boiler will start up
automatically once the 'recovery' time has
elapsed.
12 or 17: This means that burners fail to light up.
Check if the gas inlet cocks in the supply line are
open. Please remember that once they are open,
or
you must press .
Should any other fault code number appear on
the screen, please call your nearest After-Sales
Service.
Permanent Monitoring System
When the boiler is left on 'Stand-by' (Fig. 11), and
regardless of any other conventional safeties, a
permanent protection system will operate for the
pump and burners.
if you
if you
Anti-lockout
It activates the pump for 15 seconds every 6
hours.
Anti-inertia
Following every Heating and/or DHW cycle, the
pump continues to run for a short period of time.
Anti-freeze protection feature
If the temperature of the Heating Circuit drops to
7°C, the pump is turned ON until it rises to 9°C.
it you
if you
Super Anti-freeze protection feature
If the temperature of the Heating Circuit drops to
5°C in extreme weather conditions, the
programme activates not only the pump but also
for 10 seconds
the ignition system, at minimum output. The
burners will go out after 30 minutes or when the
temperature rises to 35°C.
Recommendations
The peel-off film which protects the control fascia
should be removed. It is advisable to call a
qualified service engineer for the following
operations:
– Boiler start-up
– Adjustments.
– Verification that the air inlets and ventilation of
the premises where the boiler is installed
comply with current regulations.
If the boiler receives no electrical supply, the
Permanent Monitoring System will not be
activated. In this case, the boiler will have to be
isolated and emptied as follows:
Close the Mains Water Inlet, (9) the Central
Heating Flow (2) and Return (6) valves. See
fig. 2.
Open a hot water tap.
Open the DHW outlet (3), Cold Water inlet (5)
and Heating Circuit Drain Valve (8).
Actuate the safety valve (1) by turning it a quarter
of a turn.
Flue gas evacuation safety feature
B11BS boilers (NR-15/20 R-20/20P and
R-20/20 only) are equipped with an evacuation
control device for the products of combustion. If
the boiler detects an inadequate evacuation of
flue gases, the gas supply will be shut off and
the corresponding fault code will be displayed.
See section under "Fault Codes".
CE Marking
Roca wall-mounted gas boilers comply with
the European Directive 89/336/EEC on
Electromagnetic Compatibility, European
Directive 90/396/EEC on Gas Appliances,
European Directive 73/23/EEC on Low
after
Voltage, and European Directive 92/42/CEE
on performance.
and if this
, the code 07 may
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