3
Independent System -
User’s
A
G
B
C
D
Legend
a.
CH Temperature Control
B.
Mode Control
C.
Boiler Status
1
BOILER CONTROLS
Operation
note
. The pump will operate briefly as a self-check once every 24
hours, regardless of system demand.
Control of water temperature
The boiler controls the central heating radiator temperature to a
maximum of 80
o
C, adjustable via the CH temperature control (A).
The Independent System is a high efficiency condensing boiler
which is most efficient 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,
Weather Compensation
When the Weather Compensation option is fitted to the system
then the CH Temperature Control (A) becomes a method of
controlling room temperature. Turn the knob clockwise to
increase room temperature and anti-clockwise to decrease room
temperature. Once the desired setting has been achieved, leave
the knob in this position and the system will automatically achieve
the desired room temperature for all outside weather conditions.
To shut down the boiler
Set the mode control knob to OFF.
To relight the boiler
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 fitted) 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 fitted) 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.
Loss of system water pressure
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 filling loop to 1 bar (if unsure contact your
installer), turn off the tap on the filling 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 filling 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.
E
F
D.
Burner ‘on’ Indicator
E.
Pressure Gauge
F.
Condensate Drain
g.
Economy Mode
