Glow-worm Xtramax - Manual (Page 26)

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The XTRAMAX incorporates a visual display that indicates fault
conditions, should they occur.
In the event of a fault, the display will indicate, by means of
pictograms and/or letters and numbers, exactly in which area
the fault lies.
Should the boiler fail to operate during Commissioning, the
most likely fault is that the gas supply to the boiler has not been
turned on or purged sufficiently or that there is no pressure in the
heating system. These are indicated as follows :
14.3 Other faults
These are indicated on the display by a fault code and a
telephone symbol. Further information on the fault codes can be
found in the 'Section 18 Fault Finding'.
I O
1
0.3
bar
This will be indicated on the
display as a pictogram of a
spark. To rectify this, proceed
as follows:
14.1 No gas supply
• Switch off the boiler at the On/Off
push button.
• Rectify the gas supply problem.
• Restart the boiler by pressing the
On/Off button.
14.2 Insufficient system pressure
This will be indicated on the
display as a flashing warning
indicating the system pressure
is low. To rectify this the system
must be re-filled, refer to
'Section 13 Commissioning'.
13 Commissioning
14 Safety Devices
General safety devices
14.4 Air flow rate safety device
If an obstruction, even partial, of the flue occurs, for any reason
whatsoever, the built in safety system of the boiler will turn the
boiler OFF and the fan will continue to run.
The boiler will be ready to operate when the fault has been
cleared.
14.5 Overheat safety
In case of boiler overheating, the overheat thermostat will turn
the boiler off. The thermostat, located on the heat exchanger
flow pipe, will need to be manually reset, see diagram 17.4.
14.6 In case of power supply failure
The boiler no longer operates.
As soon as power supply is restored, the boiler will be
automatically restarted.
14.7 Frost protection
The appliance has a built in frost protection device that protects
the boiler from freezing. If the boiler is to be left and there is a
risk of frost, ensure that the gas and electrical supplies are left
connected. The frost protection device will light the boiler when
the temperature of the boiler water falls below 6°C. When the
temperature reaches 16°C, the boiler stops.
Note : This device works irrespective of any room thermostat
setting and will protect the complete heating system.
Setting the maximum heating temperature parameter
T
This can be set to one of three values:
50 0 C, 73 0 C and 87 0 C.
For example,
50 0 C can be used for underfloor heating.
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Pump operation parameter
P
This can be set to one of three values:
1 - Intermittent (with burner)
2 - Permanently on
3 - Intermittent (with room thermostat)
Remote control parameter
E
Two options are available:
0 - no remote control
1 - With remote control
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Reminder - Leave these instructions and the “Benchmark”
logbook with the user.