Alpha HE25 - Page 4

4
Alpha HE25 and HE33 - Technical Data
Fig. 1
845 mm
450 mm
345 mm
22 mm
2.10 L
2.15 L
100 mm
60 mm
Case Dimensions Height
Width
Depth
Gas Connection
Primary Water Content HE25
HE33
Air Duct Diameter
Flue Duct Diameter
2.7 GENERAL
2.8 FLUE LENGTHS
CD Easy-Flue 500 mm with terminal and 90° bend. A CD Easy-Flue 1000 mm with terminal and 90° bend is also available.
CD 750 mm and CD 1000 mm flue extensions are available.
Length of Flue Required:-
Rear Flue = wall thickness + 170 mm (includes terminal)
Side Flue = wall thickness + distance between wall and side of boiler + 230 mm (includes terminal)
Vertical Flue = distance from top of boiler side panel to required roof position minus 1 m for vertical terminal assembly
Maximum horizontal flue length = 3 m.
Maximum vertical flue length including terminal is 6 m.
Each additional CD 90° Bend is equivalent to 1.3 m of flue length.
Each CD 45° Bend is equivalent to 0.9 m of flue length.
The CD Vertical Flue terminal assembly is equivalent to 1 m of flue length.
Boiler terminal block
1. Ensure wires are connected
correctly
2. Only fit the Alpha recommended
single channel clock. Other
clocks could cause damage.
WARNING
Blue
Wire
Brown
Wire
Red
Wire
12345
Internal Clock Terminals
Red
Wire
Not
Used
Clock connections
2.9 ELECTRICAL CONNECTIONS
Note: This Appliance Must Be Earthed
An optional integral single channel Clock kit is available if required.
Note: Only use the Alpha single channel clock. Do not fit any two channel clocks.
Min. Clearances for Servicing Top
(from casing) Bottom
Sides
Front
Flue Terminal Size
Flue Terminal Protruding
Hole Size Required For Flue Assy.
Lift Weight HE25
HE33
2.6 INSTALLATION
235 mm
250 mm
5 mm
450 mm
100 mm Dia.
100 mm
110 mm Dia.
45 kg
47 kg
Burner
Main Heat Exchanger
Condensing Heat Exchanger
DHW Heat Exchanger
Main Burner Injector HE25
HEB33
Flue Outer Duct - Condensing
Flue Inner Duct - Condensing
Stainless steel
Copper
Aluminiun
Stainless Steel
1.30 mm x 11
1.30 mm x 15
White
Plastic
2.4 COMPONENTS
2.5 ELECTRICAL
Supply
External Fuse
Power Consumption HE25
HE33
Internal Fuse
Electrode Spark Gap
230/240 V ~ 50 Hz
3 A
150 W
170 W
F2 A
2 - 4 mm