Alpha E-Tec 25R - Page 6

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Alpha E-Tec 15, 20, 25R - Technical Data
3.4 FLUE LENGTHS
A 500 mm or 1000 mm Easy-Flue terminal kit with 90° bend or horizontal terminal is available.
CD 750 mm and 1000 mm flue extensions are available.
Length of Flue Required:-
Rear Flue = wall thickness + 163 mm (includes terminal).
Side Flue = wall thickness + distance between wall and side of boiler + 205 mm (left side) or 235 (right side)
(includes terminal).
Vertical Flue = distance from top of boiler side panel to required roof position minus 1000 mm for vertical terminal assembly.
Maximum horizontal flue length = 12 m.
Maximum vertical flue length including terminal is 14 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.
3.5 BOILER PRESSURE DROP FOR PUMP SELECTION
3.3 PHYSICAL DATA
Boiler flow and return connections mm
Gas connection diameter mm
Boiler dimensions Height mm
Width mm
Depth mm
Clearances for servicing Bottom mm
Top (horizontal flue) mm
Top (vertical flue) mm
Sides mm
Front mm
Recommended hole size for flue pipe mm
Recommended hole size for instalation from inside the building mm
Boiler dry lift weight kg
Boiler operating weight (full of water) approx. kg
Max. total flue length Horizontal m
Max. total flue length Vertical m
Flue system diameter mm
Ambient operating temperature °C
22
22
600
390
300
250
235
150
5
450
110
130
25
27
12
14
60/100
-5 min. 40 Max.*
* with frost protection enabled
Pressure drop (m water)
0
0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200
10
20
30
40
50
60
70
80
Flow Rate (l/h water)