Alpha HE25 - User Controls

2
Alpha HE25 and HE33
The Alpha HE Range of boilers are wall mounted, fan assisted room-sealed boilers. The HE25 and HE33 are combination
boilers providing both central heating and domestic hot water at mains pressure.
The Alpha HE25 boiler is suitable for central heating loads of between 14.5 and 25.0 kW (49 500 and 85 300 Btu/h).
The Alpha HE33 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).
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.
2 USER CONTROLS
1 DESCRIPTION
Fig. 1
System
Pressure Gauge
Central
Heating Thermostat
Domestic
Hot Water Thermostat
Selector Switch
Single channel clock
(if fitted)
0
Indicator
Neons
1
2
3
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
bar
04
3
2
1
RESET
A
B
SELECTOR THERMOSTAT THERMOSTAT
OFF
HE33