14
COMMISSIONING
• Set boiler thermostat to maximum and check
that any external controls are calling for heat.
• Check that the reading on the gauge matches
that given in '
Technical Data
' for the type of gas
being used.
• Adjust the range rating adjuster screw as neces-
sary to obtain the desired input.
• Shut down boiler.
• Remove pressure gauge, tighten up test point
screws and check for gas soundness.
• Using a ball point pen, clearly indicate on the
data label the input the boiler is set to.
Note
: This adjustment does not affect the domes-
tic hot water output.
If measured burner pressure differs greatly from the
given figure, check the gas inlet pressure as follows:
• Shut down boiler.
• Remove screw from inlet test point on the side of
the gas valve,
see diagram 15
.
• Connect a suitable pressure gauge.
• Start boiler as described in '
Instructions for Use
'.
• Check that the inlet pressure reading matches
that given in '
Technical Data
' for the type of gas
being used.
Reg 014
Diagram 17
• Shut down boiler.
• Remove pressure gauge, tighten up test point
screws and check for gas soundness.
• If the gas pressure is incorrect, refer to the Fault
Finding section in '
Servicing Instructions
'.
• If the inlet pressure is below that given, the gas
supply pipework/meter must be checked and any
fault corrected.
• In the case of an LPG installation, check the stor-
age tank or cylinder, regulator and pipework.
OPERATING SAFETY DEVICES
Important notice:
A central heating system cannot
operate satisfactorily unless it is properly filled with
water and unless the air initially contained in the
piping systems has been properly bled off. If these
conditions are not satisfied, air noise will occur
within the system.
Air in the heating system
Persistent air in the heating system may indicate
leaks in the system or corrosion taking place. Call
your Installation/Servicing company.
Overheat safety
In the event of a problem, the overheat safety
devices cause safety shutdown of the boiler. If this
happens, call your Installation/Servicing company.
The
THELIA 30 E
boiler 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 con-
nected and that the OFF/Summer/Winter switch is
left in the'Summer' or 'Winter' position.The frost pro-
tection device will light the boiler when the tem-
perature 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 only protects the boiler. Al-
ways ensure that adequate frost protection is given
to the entire system where necessary.
Gas leak or fault
If a gas leak or fault exists or is suspected, turn the
boiler off and consult the local gas undertaking or
your installation/servicing company.
In case of power supply failure
The boiler no longer operates.
As soon as power supply is restored, the boiler will
be automatically restarted.
Air flow rate safety device
If an obstruction, even partial, of the flue occurs,
for any reason whatsoever, the built in safety sys-
tem 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.
In case of loss of water in the system
CAUTION
. The boiler is installed as part of a sealed
system which must only be
drained and filled by a com-
petent person.
If the pressure shown on the
pressure gauge is less than 1
bar or if the red loss of water
warning light is ON, the sys-
tem
must be filled up immediately. Call your Installation/
Servicing company.
