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Alpha HE CB/SY
The Alpha HE Range of boilers are wall mounted, fan assisted room-sealed boilers. The HE CB25 and HE CB33 are
combination boilers providing both central heating and domestic hot water at mains pressure. The HE SY25 is a system boiler
providing heating only for sealed central heating systems.
The Alpha HE CB25 and HE SY25 boilers are suitable for central heating loads of between 14.5 and 25.0 kW (49 500 and 85 300 Btu/h).
The Alpha HE CB33 boiler is suitable for central heating loads of between 19.7 and 33.2 kW (67 200 and 113 300 Btu/h).
The boilers will provide central heating (as required) during the 'on' times set on your clock (if fitted).
HE CB25/33 only - Hot water is always available whenever a hot tap is opened and takes priority over the central heating.
The burner is lit electronically and the heat output is controlled by a modulating gas valve.
Pull the controls panel cover forward and down to gain access to the controls (if applicable).
2 USER CONTROLS
1 DESCRIPTION
Fig. 1a - Alpha HE CB25/33
Fig. 1b - Alpha HE SY25