Alpha Alpha CB50 Boiler, Installation And Servicing Instructions

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3
2 TECHNICAL DATA
Alpha CB50 - Technical Data
900 mm
600 mm
450 mm
22 mm
3.2 L
100 mm
60 mm
Dimensions Height
Width
Depth
Gas Connection
Primary Water Content
Air Duct Diameter
Flue Duct Diameter
MAX.
33.6
114 700
28.0
95 550
10.0
4.0
3.25
114.8
82
180
MIN.
13.5
46 200
10.5
35 800
1.7
0.68
1.24
43.9
30
86
Room sealed chamber
panel fitted
Central Heating
Heat Input kW
(Gross) Btu/h
Heat Output (modulating) kW
Btu/h
Burner Pressure
mbar
Setting
in wg
Gas Rate m³/h
ft³/h
CH Water Temp. (Approx.) °C
°F
2.1 PERFORMANCE - NATURAL GAS (Cat I
2H
)
5.5 bar
12 bar
0.1 bar
15 mm
15 mm
57 L
4L at 2.5 bar
2.5 bar
90°C/7 bar
6 bar
Domestic Hot Water
Max. Hot Water Working Pressure
Max. Mains Inlet Pressure
(inlet of pressure reducing valve)
Min. Mains Water Pressure
Mains Inlet Connection
DHW Outlet Connection
DHW Water Storage
Expansion Vessel Size (pre-charge press.)
Pressure Reducing Valve Setting
Temperature and Pressure Relief Valve
Expansion Relief Valve Setting
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)
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
2.2 SYSTEM
Burner (15 blade)
Main Heat exchanger
DHW Storage Cylinder
Main Burner Injectors
Flue - Outer Duct
Flue - Inner Duct
Stainless steel
Copper
Stainless Steel
1.3 mm (15 off)
Epoxy coated
Aluminium
2.3 COMPONENTS
2.5 GENERAL
MAX.
33.6
114 700
28.0
95 550
10.0
4.0
3.25
114.8
18.0
4.0
65
149
MIN.
13.5
46 200
10.5
35 800
1.7
0.68
1.24
43.9
1.0
0.22
5
41
Domestic Hot Water
Heat Input kW
(Gross) Btu/h
Output to Water (modulating) kW
Btu/h
Burner Pressure
mbar
Setting
in wg
Gas Rate m³/h
ft³/h
Flow Rate L/min
G.P.M.
Outlet Water Temp. (Approx.) °C
°F
Time to raise water store by 50°C
Reheat time for 70% of store
(boiler ON)
(boiler OFF)
Room sealed chamber
panel fitted
8.0 minutes
3.5 minutes
5.0 minutes
Minimum Clearances for Servicing
Top
Bottom
Sides
Front
Flue Terminal Size
Flue Terminal Protruding
Hole Size Required For Flue Assy.
Lift Weight
Weight Full and Operational
220 mm
250 mm
10 mm
450 mm
100 mm Dia.
145 mm
110 mm Dia.
72 kg
132 kg
2.4 INSTALLATION
Supply
External Fuse
Power Consumption
Internal Fuse
Electrode Spark Gap
230/240 V ~ 50 Hz
3 A
190 W
F2 A
2.0 to 4.0 mm
2.6 ELECTRICAL