Technical data
4
Alpha 240XP and 240XE - Technical Data
Fig. 1
Boiler terminal block
900 mm
450 mm
360 mm
22 mm
1.7 L
100 mm
60 mm
Dimensions Height
Width
Depth
Gas Connection
Primary Water Content
Air Duct Diameter
Flue Duct Diameter
2.5 GENERAL 2.6 ELECTRICAL
Supply
External Fuse
Power Consumption
Internal Fuse
Electrode Spark Gap 240XP
240XE
Thermocouple (240XP only):-
min. closed circuit output
230/240 V ~ 50 Hz
3 A
170 W
F2 A
5 mm
3.0 to 3.5 mm
10 mV
2.7 FLUE LENGTHS
Flue length = 0.75 m (not including the terminal, which is supplied with the boiler)
Note: Additional flues (of the same length) are available.
Length of Flue Required:-
Rear Flue = wall thickness +150 mm
Side Flue = wall thickness + distance between wall and side of boiler + 185 mm
Vertical Flue = distance from top of boiler side panel to required roof position minus 1 m for vertical terminal assembly
Maximum flue length = 4 m
Each additional 90° Bend is equivalent to 1 m of flue length
Each 45° Bend is equivalent to 0.5 m of flue length
The Vertical Flue terminal assembly is equivalent to 1 m of flue length
2.8 AVAILABLE PUMP HEAD FOR CENTRAL HEATING
gal/min
3.32
2.78
2.32
1.85
1.47
Btu/h
79 500
60 000
50 000
40 000
31 700
kW
23.3
17.58
14.65
11.63
9.3
metres
2.33
3.00
3.45
3.85
4.20
feet
7.7
9.8
11.3
12.6
13.8
Output Available pump head
metres
2.95
3.45
3.75
4.05
4.35
feet
9.7
11.3
12.3
13.3
14.3
metres
2.50
2.20
2.00
1.70
1.45
feet
8.2
7.2
6.6
5.6
4.8
metres
2.25
2.00
1.75
1.50
1.35
feet
7.4
6.6
5.7
4.9
4.4
Pressure loss across boiler
gal/min
4.00
3.27
2.72
2.18
1.73
litre/min
15.10
12.60
10.50
8.40
6.70
17°C 20°C
litre/min
18.10
14.80
12.36
9.89
7.84
17°C 20°C 17°C 20°C
Flow rate
This information is based on 17°C and 20°C system design temperature difference.
1. Ensure wires are connected
correctly
2. Only fit the Alpha recommended
clock. Other clocks could cause
damage.
WARNING
Blue
Wire
Brown
Wire
Black
Wire
12345
Internal Clock Terminals
Black
Wire
Not
Used
Clock connections
2.9 ELECTRICAL CONNECTIONS
Note: This Appliance Must Be Earthed
An optional integral Clock kit is available if required.