Alpha Boilers SY24, Installation And Servicing Instructions

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3 Alpha SY24
5. OVERHEAT THERMOSTAT
This thermostat automatically switches the boiler off in the unlikely event of the boiler overheating. When the thermostat operates,
the red neon (A) flashes on and off. Rotate the selector switch to the reset position and the ignition sequence will start.
If this continually happens, contact your Service Engineer.
6. PRESSURE RELIEF VALVE
If the central heating system overheats and steam or water is discharged from the pipe connected to this valve, turn the boiler off
and contact your Service Engineer. Your Installer should have told you where this pipe terminates somewhere outside your dwelling.
7. FROST THERMOSTAT
The boiler has a built-in frost thermostat, which automatically operates the boiler if the water temperature falls below 8°C,
providing the electrical supply is on and the selector switch is set to , see Fig. 1.
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. All isolation valves at the bottom of the boiler are in the open position (slots on the spindle in line with the valves i.e. ).
d. The gas and water supplies are on at the mains.
e. The heating system pressure is within the green band as shown by the pressure gauge.
2. Turn the heating thermostat fully anticlockwise to 0.
3. Switch on the electrical supply to the boiler.
4. Set any room thermostats to maximum and ensure that any clock is in an 'on' position.
5. Set the selector switch to ON and turn the heating thermostat fully clockwise. The main burner will light and the boiler will
provide central heating.
6. Set the boiler heating 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 .
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.
4 LIGHTING INSTRUCTIONS
5 IMPORTANT NOTES
1. BOILER LOCATION
Always ensure the following clearances are available around the casing of the boiler (not including the bottom tray):-
Top: 220 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. In cold weather, vapour may be emitted from the terminal. This is 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 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: 01322 669443.
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.