Legend
A. CH Temperature Control
B. Mode Control
C. Boiler Status
1 BOILER CONTROLS
Note. The pump will operate briey as a self-check once every 24
hours, regardless of system demand.
The boiler controls the central heating radiator temperature to a
maximum of 80
o
C, adjustable via the CH temperature control (A).
The Logic System is a high efciency condensing boiler which is
most efcient when operating in condensing mode.
The boiler will operate in this mode if the CH temperature control
(A) is set to the ‘e’ position (economy mode). This control should
be set to maximum for very cold periods
Set the mode control knob to OFF.
Repeat the procedure detailed in ‘To light the boiler’.
Frost protection
If no system frost protection is provided and frost is likely during
a short absence from home, leave the heating controls (if tted)
at a reduced temperature setting. For longer periods, the entire
system should be drained.
If the system includes a frost thermostat then, during cold
weather, the boiler should be turned OFF at the time switch (if
tted) ONLY. The mains supply should be left switched ON, with
the boiler thermostat left in the normal running position.
Boiler Overheat Protection
The boiler controls will shut down the boiler in the event of
overheating. Should this occur, a fault code will be displayed.
Refer to fault chart.
Flame Failure
Should this occur a fault code will be displayed. Refer to fault
chart.
The gauge (E) indicates the central heating system pressure. If
the pressure is seen to fall below the original installation pressure of
1-2 bar over a period of time then a water leak may be indicated. In
this event conduct the re-pressurising procedure as follows:
Re-pressurise via the lling loop to 1 bar (if unsure contact your
installer), turn off the tap on the lling loop and turn switch (B) to the
reset position and then back on again to reset the boiler.
If unable to do so or if the pressure continues to drop after lling a
Gas Safe Registered Engineer or in IE a Registered Gas Installer
(RGII) should be consulted.
NOTE. THE BOILER WILL NOT OPERATE IF PRESSURE HAS
REDUCED TO LESS THAN 0.3 BAR UNDER THIS CONDITION.
The condensate drain (F) must not be modied or blocked.
Blockage of the condensate drain, caused by debris or freezing, can
cause automatic shutdown of the boiler.
If freezing is suspected and the pipe run is accessible an attempt
may be made to free the obstruction by pouring hot water over the
exposed pipe and clearing any blockage from the end of the pipe.
If this fails to remedy the problem the assistance of a Gas Safe
Registered Engineer or in IE a Registered Gas Installer (RGII)
should be sought.
Should a gas leak or fault be suspected contact the National Gas
Emergency Service without delay. Telephone 0800 111 999
For normal cleaning simply dust with a dry cloth.
To remove stubborn marks and stains, wipe with a damp cloth and
nish off with a dry cloth.
Maintenance
The appliance should be serviced at least once a year by a Gas
Safe Registered Engineer or in IE a Registered Gas Installer (RGII).