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Alpha CD13R, 18R, 24R
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LIGHTING INSTRUCTIONS
Refer to Fig. 1 for boiler controls.
1.
Ensure the following:-
a. Electrical supply to the boiler is off.
b. All heating controls and thermostats are set to OFF or minimum position.
c. The boiler gas isolation valve is in the open position (slot on the spindle in line with the valves i.e. ).
d. The gas supply is on at the mains.
e. The heating system is filled and vented.
2.
Switch on the electrical supply to the boiler.
3.
Set any room thermostats to maximum and ensure that any clock is in an 'on' position.
4.
Set the selector switch to position (2) and turn the heating thermostat fully clockwise. The main burner will light and the
boiler will provide central heating.
5.
Set the boiler thermostat, clock, external controls i.e. room thermostat to your chosen settings and the boiler is ready to operate.
To turn the boiler off for short periods:- Set the selector switch to position (1).
Note: In this position the pump will automatically operate for 5 minutes in every 24 hours. If the water temperature falls below
8°C the built-in frost thermostat will operate the boiler automatically until the temperature of the water in the heating system has
been raised.
To turn the boiler off for longer periods:- Switch off the electrical supply to the boiler. If required, all supplies i.e. gas, water
and electricity may be turned off at the mains. If there is any possibility of the boiler being left during frost conditions, then the
boiler and system should be drained and a label attached to the boiler drawing attention that the system has been drained. If
this is required, contact your Service Engineer.
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BOILER OPERATION
The operating sequence of the boiler is controlled by the selector switch on the control panel.
Setting the selector switch to position (2) the boiler will operate to provide central heating.
When the selector is set to central heating, it will respond to a demand for heat in the following sequence:-
a. The external pump will start, the fan will operate and the main burner will light.
b. The output of the burner is automatically controlled to suit the system demand.
c. When the temperature of the system water in the boiler reaches that set by the thermostat or the room thermostat is
satisfied, the main burner is turned off and the fan stops after 50 seconds. The pump will continue to run to remove any
residual heat from the boiler.
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IMPORTANT NOTES
1. BOILER LOCATION
Always ensure the following clearances are available around the casing of the boiler:-
Top: 235 mm, Bottom: 250 mm, Each side: 5 mm, Front: 450 mm
Do not store any other articles in the cupboard containing the boiler and never place any clothing or combustible material on or near
the boiler or flue pipe.
2. FLUE TERMINAL
The terminal on the outside wall must not be allowed to be obstructed. If it is damaged, in any way, turn the boiler off and
contact your Service Engineer.
Note: The Alpha CD boilers are high efficiency condensing boilers and when operating vapour will be emitted from the terminal.
This is safe and quite normal.
3. MAINS FAILURE
In the event of an electrical supply failure the boiler will not operate. When the supply is restored, the boiler will return to normal
operation. Remember to reset the clock, if fitted, when the supply is restored.
4. CLEANING
Use only a damp cloth and mild detergent to clean the boiler outer casing. Do not use abrasive cleaners.
5. SERVICING
To maintain efficient and safe operation of your boiler, routine annual servicing is essential.
For advice on servicing contact:- The Alpha Helpline: 0870 3001964.
6. GAS LEAK
If a fault or gas leak is suspected, turn off the gas supply. Do not touch any electrical switches, do not smoke and extinguish all
naked flames. Contact your local Gas Region immediately.