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Resumen del manual
HE CB25/33 only -If the boiler is operating to provide central heating and a hot water tap is opened, the boiler will automatically switch over to provide hot water. Such an interruption in the central heating should not generally be noticed by any reduction in room temperature. Note: If a clock is fitted to the HE CB25/33 boiler, it will only control the operating times of the central heating. Hot water will always be available when a tap is opened. If a two channel clock is fitted to the HE SY25 boiler it will control the operating times of the central heating and hot water. When the selector is set to position (2), it will respond to a demand for heat in the following sequence: a. The pump will start, the fan will operate at full speed 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 20 seconds. The pump will continue to run to remove any residual heat from the boiler. d. HE CB25/33 only -When a hot tap is opened, the boiler automatically senses a flow of water. The pump will start, the fan will operate at full speed and the main burner will light. e. HE CB25/33 only -The boiler will continue to supply hot water at the temperature set by the thermostat until the tap is closed. 6 HOT WATER USE - HE CB25/33 only The supply of hot water is almost instantaneous at the boiler, but the time taken to reach a tap and the temperature at which it leaves the tap will depend on the rate at which the water is drawn off and the length of the pipe between the tap and the boiler. Fully opening a hot tap may not always provide the maximum temperature as the flow rate may be too high, try closing it slightly until the maximum temperature is achieved. Depending on your mains water pressure, it may not be possible to operate several hot taps at the same time. Alpha HE CB/SY 7 USING A SHOWER - HE CB25/33 only 7 USING A SHOWER - HE CB25/33 only Thermostatic or pressure equalising type -When using these types of shower set the boiler domestic hot water thermostat to maximum. The shower should then maintain a relatively constant temperature. Manual bath mixer type shower -When using this type of shower set the boiler domestic hot water thermostat to setting 7, This should avoid excessive temperatures at the shower. Note: If you get unacceptable temperature variations with this type of shower, then a thermostatic or pressure equalising type should be used. 8 IMPORTANT NOTES 1. BOILER LOCATION Always ensure the following clearances are available around the casing of the boiler: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. Note: The Alpha HE boilers are high efficiency 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 when the supply is restored. HE CB25/33 only -If the mains water supply fails, there will be no hot water from the taps. The boiler will continue to provide central heating. 4. ADDITIONAL BATHROOM FITTINGS - HE CB25/33 only Any equipment such as mixing valves, showers, bidets etc. must be designed to operate at mains water pressure. Contact your plumbing merchant or installer for advice when considering purchasing such items. 5. CLEANING Use only a damp cloth and mild detergent to clean the boiler outer casing. Do not use abrasive cleaners. 6. 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 7. 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. 8. ELECTRICAL SUPPLY The boiler requires a 230/240 V ~ 50 Hz supply, fused at 3 A if a 13 A 3-pin plug is used or a 5 A fuse if any other type of plug is used. To connect a plug: The colour of the wires in the mains lead of the boiler may not correspond with the coloured markings identifying the terminals in your plug. In this case proceed as follows:The wire coloured green and yellow must be connected to the terminal in the plug that is marked with the letter E, or by the earth symbol , or coloured green or green and yellow. The blue wire must be connected to the terminal which is marked ...
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