Alpha CD24C Installation And Servicing Instructions page 4

2.5 INSTALLATION
Min. Clearances for Servicing
(from casing)
Flue Terminal Size
Flue Terminal Protruding
Hole Size Required For Flue Assy.
Lift Weight
2.7 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 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 = 12 m.
Maximum vertical flue length including terminal is 15 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.
2.8 AVAILABLE PUMP HEAD FOR CENTRAL HEATING
Output (50/30°C) Available pump head
kW Btu/h
metres
2.3
25.40 86 700
3.5
18.70 64 000
3.8
15.60 53 000
4.0
12.35 42 200
4.6
5.30 18 100
This information is based on 20°C system design temperature difference.
Note: For outputs upto 28 kW refer to Section 3.7.
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.
Not Red
Used Wire
5 4
Internal Clock Terminals
WARNING
1. Ensure wires are connected
correctly
2. Only fit the Alpha recommended
clock. Other clocks could cause
damage.
Clock connections
Alpha CD24C/32C - Technical Data
4
Top 220 mm
Bottom 250 mm
Sides 5 mm
Front 450 mm
100 mm Dia.
100 mm
110 mm Dia.
CD24C 49 kg
CD32C 51 kg
20°C
feet litre/min
7.6 16.6
11.6 12.6
12.6 10.5
13.2 8.3
15.2 3.2
Red Brown Blue
Wire Wire Wire
3 2 1
Fig. 1
2.6 GENERAL
Case Dimensions
Gas Connection
Primary Water Content
Air Duct Diameter
Flue Duct Diameter
Flow rate
20°C
gal/min
3.7
2.8
2.3
1.8
0.7
Height
Width
Depth (CD24)
Depth (CD32)
CD24
CD32
Boiler terminal block
850 mm
450 mm
345 mm
380 mm
22 mm
2.5 L
3.0 L
100 mm
60 mm