User Guide
3
USER
TO START THE BOILER
Start the boiler as follows:
1.
Switch on electricity to the boiler and check that all external
controls, e.g. programmer, room thermostat and cylinder
thermostat are on.
3.
If a Boiler symbol is shown on the screen then press Mode
until Ready or On is shown underneath the Boiler symbol.
If Tap and Radiator symbols are shown press Mode until
Ready or On is shown underneath the radiator symbol..
4.
If a Boiler symbol is shown on the screen turn the
temperature control knob until 80°C is shown. If Tap and
Radiator symbols are shown turn the temperature control
knob until 30°C is shown..
Once the boiler has lit see the following page about where the
Temperature Control knob should be set..
In normal operation the boiler status display (D) will display
messages.
Boiler frost protection - boiler will fire if temperature is below 5ºC.
During normal operation the burner on symbol (C) will
remain illuminated when the burner is lit.
If the boiler fails to light after five attempts the following fault
messages will be displayed:
To restart the boiler, press Restart. The boiler will repeat
the ignition sequence. If the boiler still fails to light consult a
Registered Gas Installer.
1.2 BOILER OPERATION
Refer to Section
1.8
1 Check other gas appliances work.
2 Restart boiler.
3 If fault persists, contact installer.
Restart
Menu
Ignition Lockout
Legend
A. Hot Keys
B. Central Heating
Temperature Knob
C. Boiler Status Display
D. Burner On indicator
D
B
A
C
Target 60°C
Menu
Mode
On at 60°C
OPERATION MODES
Winter Conditions
- (Central Heating and Domestic Hot
Water required)
If a Boiler symbol is shown on the display then press Mode
until either Ready or On is shown under the Boiler symbol. If
Tap & Radiators symbols are shown then press Mode until
Ready or On is shown under the radiator and tap symbol.
[
].
The boiler will fire and supply heat to the radiators.
Summer Conditions -
(Domestic Hot Water only required)
If a Boiler symbol is shown on the display then central heating
must be disabled at the timer or room thermostat. If Tap and
Radiators symbols are shown on the display then press Mode
until Ready or On is shown under the Tap and Off is shown
under the Radiator. [
].
Boiler Off
If a Boiler symbol is shown on the display then press Mode
until Off is shown under the Boiler symbol. If Tap and Radiator
symbols are shown on the display then press Mode until Off is
shown underneath the Radiator symbol.
CONTROL OF WATER TEMPERATURE
Central Heating
The boiler controls the central heating radiator temperature
to a maximum of 80
o
C, adjustable via the central heating
temperature knob (B).
Approximate temperatures for central heating:
Knob Setting
Central Heating Radiator Temperature (approx.)
Minimum
30ºC
Maximum
80ºC
For economy setting [
] refer to Efficient Heating System
Operation.
EFFICIENT HEATING SYSTEM OPERATION
The boiler is a high efficiency, condensing appliance which will
automatically adjust its output to match the demand for heat.
Therefore gas consumption is reduced as the heat demand is
reduced.
The boiler condenses water from the flue gases when
operating most efficiently. To operate your boiler efficiently
(using less gas) turn the temperature control knob (B) until the
leaf symbol is shown [
].
In winter periods it may be necessary to turn the Temperature
Knob clockwise until an 80°C target is shown to meet heating
requirements. This will depend on the house and radiators
used.
Reducing the room thermostat setting by 1ºC can reduce gas
consumption by up to 10%.
