16
5.5
CHECK THE BURNER PRESSURES - Fig. 16
Set the central heating selector to 0 to turn the boiler off. Loosen the
burner pressure test point screw on the gas valve and connect a
pressure gauge. Allow the boiler to run for 10 minutes and check the
burner pressures.
1.
Set the selector switch to ON.
2.
The burner will light at the ignition rate and will increase to the
factory pre-set maximum output.
Note: The burner pressure settings have been factory set and do
not require adjusting. If incorrect, check that the inlet gas pressure
is 20 mbar. If the inlet gas pressure is not 20 mbar, either the
pipework is too small or the gas supply to the house is insufficient,
in which case contact your gas supplier.
3.
Turn off the boiler. Disconnect the pressure gauge and tighten the
test point screw.
Test for gas soundness using suitable leak detection fluid.
Note: Refer to Technical Data, section 2.1 for burner pressure settings.
5.6
FINAL COMMISSIONING
1.
Allow the heating system to heat up, then balance the system to achieve the necessary temperature difference across the
heating flow and return pipes at the boiler and check the system volume and pressure. (Refer to Technical Data, sections
2.2 and 2.8).
2.
Turn off the boiler.
3.
Thoroughly flush out the water pipework.
4.
Re-pressurise the system as described in section 5.1.
5.7
FINAL ASSEMBLY
1.
Raise the control panel and secure in position with the screws provided.
2.
If the boiler is to be left in service with the User, set the controls, clock (if fitted, see User's Operating manual) and room
thermostat (if fitted) to the User's requirements.
3.
If the boiler is not to be handed over immediately, close the boiler gas service cock and switch off the electrical supply.
4.
If there is any possibility of the boiler being left during frost conditions, then the boiler and system should be drained (refer to section
8.2). It is recommended that a label is attached to the boiler drawing attention to the fact that the system has been drained.
5.
Complete the details of the installation on the back page of this manual and the Benchmark log book.
5.8
USER INFORMATION
The User must be advised (and demonstrated if necessary) of the following important points:-
1.
How to light and turn off the boiler and how to operate the system controls.
2.
The importance of annual servicing of the boiler to ensure safe and efficient operation.
3.
That any servicing or replacement of parts must only be carried out by CORGI registered personnel.
4.
Ensure that the boiler controls and room thermostat (if fitted) are set to the User's requirements.
5.
Tell the User about the sealed system pressure.
6.
Tell the User that if the electrical supply is on and the boiler has not operated for 24 hours, the pump will automatically
operate for 5 minutes.
7.
Explain to the User that an internal frost thermostat is fitted in the boiler, and that the electrical supply to the boiler must be
left on and the selector switch set to
for the thermostat to operate.
8.
Show the User the position of the pressure relief valve discharge pipe.
9.
Hand the User's instructions and the Benchmark Log Book to the User.
10. Leave these Installation and Servicing instructions with the User for use on future calls.
11. Inform the User that the boiler bottom tray has the facility to store the instructions and log book.
Alpha SY24 - Commissioning
Fig. 16
Summary of Contents for SY24
Page 25: ...25 Alpha SY24 Wiring Diagrams 9 1 ILLUSTRATED WIRING DIAGRAM 9 WIRING DIAGRAMS ...
Page 26: ...26 9 2 FUNCTIONAL FLOW WIRING DIAGRAM Alpha SY24 Wiring Diagrams ...
Page 28: ...28 10 3 FAULT FINDING SOLUTION SECTIONS A to F Alpha SY24 Fault Finding ...
Page 29: ...29 Alpha SY24 Fault Finding 10 4 FAULT FINDING SOLUTION SECTIONS G to J ...
