Technical Data - Alpha CD24C Installation And Servicing Instructions

2

TECHNICAL DATA

2.1 PERFORMANCE - NATURAL GAS
Alpha CD24C
Central Heating
Heat Input (H )
s
(Gross)
Heat Input (H )
i
(Net)
Heat Output (H condensing)
s
(50°C/30°C)
Heat Output (H non-condensing) kW
i
(80°C/60°C)
Differential Burner
Room sealed
chamber panel
Pressure
fitted
Gas Rate
Alpha CD32C
Central Heating
Heat Input (H )
s
(Gross)
Heat Input (H )
i
(Net)
Heat Output (H condensing)
s
(50°C/30°C)
Heat Output (H non-condensing) kW
i
(80°C/60°C)
Differential Burner
Room sealed
chamber panel
Pressure
fitted
Gas Rate
2.2 SYSTEM
Alpha CD24C
Central Heating (Sealed System)
Max. Working System Pressure
Min. System Pressure
Max. System temperature
Pressure Relief Valve Setting
Expansion Vessel Size (pre-charge press.)
Flow Connection
Return Connection
Relief Valve Connection
Recommended System Pressure (cold)
CH Water Temp. (Approx. max.)
2.3 COMPONENTS
Burner
Main Heat exchanger
DHW Heat Exchanger
Main Burner Injector
Flue - Outer Duct
Flue - Inner Duct
MAX.
kW 26.4
Btu/h 90 100
kW 24.0
Btu/h 82 000
kW 25.4
Btu/h 86 700
23.5
Btu/h 81 135
mbar 5.78
in wg 2.30
m³/h 2.54
ft³/h 89.7
MAX.
kW 31.1
Btu/h 106 100
kW 28.0
Btu/h 95 550
kW 29.8
Btu/h 101 700
28.0
Btu/h 95 500
mbar 3.33
in wg 1.33
m³/h 2.98
ft³/h 105.2
2.5 bar
0.5 bar
82°C
3 bar (44 PSI)
8 L at 0.8 bar
22 mm
22 mm
15 mm
1.0 bar
82°C (180°F)
Stainless steel
Stainless steel
Stainless Steel
CD24 5.0 mm
CD32 6.6 mm
White
Plastic
Alpha CD24C
MIN. Domestic Hot Water
5.5 Heat Input (H
18 800 (Gross)
5.0 Heat Input (H
17 100 (Net)
5.3 Output to Water (H
18 100 (modulating)
4.7 Differential Burner
16 018 Pressure
0.35 Gas Rate
0.14
0.53 Flow Rate at 35°C Rise
18.7
Specific Flow Rate (D) at 30°C Rise L/min
(Flow rate @ 30K to EN625)
MIN.
Alpha CD32C
7.3
Domestic Hot Water
24 900
Heat Input (H
6.6
(Gross)
22 500
Heat Input (H
7.0
(Net)
23 900
Output to Water (H
6.5
(modulating)
22 200
Differential Burner
0.39
Pressure
0.16
Gas Rate
0.69
24.4
Flow Rate at 35°C Rise
Specific Flow Rate (D) at 30°C Rise L/min
(Flow rate @ 30K to EN625)
Alpha CD24C and CD32C
Domestic Hot Water
Max. Mains Inlet Water Pressure
Min. Mains Water Pressure
Min. DHW Flow Rate
Mains Inlet Connection
DHW Outlet Connection
DHW Water Content
Outlet Water Temp. (Approx. max.)
2.4 ELECTRICAL
Supply
External Fuse
Power Consumption
Internal Fuse
Electrode Spark Gap
) kW
s
Btu/h
) kW
i
Btu/h
) kW
s
Btu/h
mbar
Room sealed
chamber panel
in wg
fitted
m³/h
ft³/h
L/min
gal/min
gal/min
) kW
s
Btu/h
) kW
i
Btu/h
) kW
s
Btu/h
Room sealed mbar
chamber panel
in wg
fitted
m³/h
ft³/h
L/min
gal/min
gal/min
CD24C
CD32C
230/240 V ~ 50 Hz
CD24
CD32
Alpha CD24C/32C - Technical Data
MAX. MIN.
26.4 5.5
90 100 18 800
24.0 5.0
82 000 17 100
24.20 4.97
82 600 17 000
5.78 0.35
2.3 0.14
2.54 0.53
89.7 18.7
9.6
2.2
11.2
2.5
MAX. MIN.
36.2 7.3
123 500 24 900
32.6 6.6
111 300 22 500
32.0 6.6
109 200 22 500
4.27 0.39
1.71 0.16
3.45 0.69
121.8 24.4
13.2
2.9
15.4
3.9
8 bar
0.2 bar
2.5 l/min
15 mm
15 mm
0.2 L
0.3 L
62°C (144°F)
3 A
130 W
140 W
F2 A
3 - 4 mm
3