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OPErATING THE BOILEr
2.1. HEATING SYSTEM AND BOILEr
(a) Sealed Systems
A sealed heating system must be filled and pressurised by a competent person.
Only light the boiler when you are sure that the system and the boiler have
been filled and pressurised.
The pressure should read at least 0.5bar, anything less than this figure could
indicate a leak and you MUST contact your installation / servicing company.
(b) All Systems
Check that the electrical supply to the boiler is ON at the external system
isolator. Set any remote controls as required.
This is a fan flued appliance and therefore the fan operation may be heard. The
boiler flow temperature is factory set at 77°C and is not user adjustable. (Note:
The boiler flow temperature can be adjusted between 55°C and 85°C by the
installer for special applications)
Diagram 2.1
Diagram 2.1
I
I
0
0
Mains/Reset
Mains/Reset
Switch
Switch
2.2. uSEr cONTrOLS
The appliance control panel is shown in diagram .1. The appliance on-off
switch should be left in the ON position (indicated by flame symbol) for normal
operation otherwise the built in boiler frost protection will not function.
The two-digit display indicates the status of the boiler and the push buttons
are used for setting and resetting the controller as shown in diagram ..
(a) central heating and hot water
- Switch the boiler on-off switch to position 'ON' position indicated by a 'flame'
symbol and the dot D1 will begin to flash to indicate that the boiler controller
is active.
- Set the remote user controls e.g. programmer and room thermostat so that
hot water heating and/or central heating demands are active.
- When the boiler senses the heating demand, indicated by horizontal bar 'a' ,
the boiler switches on the boiler pump (indicated by bar 'a1') and starts the
boiler firing sequence.
- When the boiler has lit, the dot D1 will stop flashing and will be on
constantly.
a2
a2
a1
a1
S2
S2
S1
S1
S3
S3
-
-
+
+
Set/Reset
Set/Reset
- If the boiler fails to ignite, the dot D1 will switch off and
dot D will be flashing or be on constantly (depending
upon the error type) and reset will be required.
- When the demand for boiler firing stops i.e. heat is
not required for space heating or hot water, the boiler
will stop firing and this will be indicated by flashing dot
D1 and bar a will switch off. After a period of about
3 minutes the boiler pump will switch off indicated
by bar a1.
(b) To reset Boiler
Press reset button S1. If the dot D1 starts to flash and
the dot D switches off, the boiler has reset. If the fault
persists contact your installer/service provider.
2.3. TO TurN THE BOILEr OFF
Turn the mains /reset switch to the off position
(indicated by disc). Turn the gas supply off at the gas
service cock if the boiler is to be out of use for some
time.
Page 6
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