4
2.6
FLUE LENGTHS - See also Section 3.4
CH Max
9.30
9.45
1010 mm
600 mm
610 mm
3/4 "
1 "
9.5 L
11.0 L
Case Dimensions
Height
Width
Depth
Gas Connection
CD90S
CD115S
Water Content
CD90S
CD115S
2.7
GENERAL
Min. Clearances for Servicing
Top
(from casing)
Bottom
Sides
Front
Flue Diameter
Open Flue
Concentric Flue
Flue Protruding Outside Open Flue
Concentric Flue
Hole For Flue Assy.
Open Flue
Concentric Flue
Lift Weight
CD90S
CD115S
2.5
INSTALLATION
Burner
Main Heat Exchanger
Main Burner Injector CD90S NG
CD115S NG
CD90S LPG
CD115S LPG
Concentric Flue Outer Duct
Concentric Flue Inner Duct
Open Flue Single Flue Pipe
Stainless steel
Stainless steel
12.0 mm
14.0 mm
8.8 mm
10.8 mm
125 mm dia.
80 mm dia.
80 mm dia.
2.3
COMPONENTS
2.4
ELECTRICAL
Supply
External Fuse
Power Consumption
CD90S
CD115S
Internal Fuse - Main Terminal
PCB Fuse F1
PCB Fuse F3
Electrode Spark Gap
Electrical Enclosure Degree of Moisture Protection
230/240 V ~ 50 Hz
3 A
370 W
390 W
F2A
T2A
T4A
3 to 4 mm
IPX5D
Alpha CD90S/115S - Technical Data
2.8
PERFORMANCE DATA
%CO
2
content (± 0.2%)
Natural Gas
Min
9.10
8.95
Boiler model
CD90S
CD115S
350 mm
350 mm
10 mm
450 mm
80 mm
125 mm
80 mm
125 mm
100 mm dia.
127 mm dia.
63 kg
68 kg
CH Max
10.7
10.7
(LPG) Propane Gas
Min
10.2
10.3
Central Heating (Sealed System)
Max. Working System Pressure
Min. System Pressure
Max. System temperature
Pressure Relief Valve Setting
Flow Connection
Return Connection
Relief Valve Connection
Recommended System Pressure (cold)
CH Water Temp. (Approx. max.)
3.5 bar
0.5 bar
85°C
4 bar (58.8 PSI)
1½" BSP
1½" BSP
¾" BSP
1.0 bar
85°C (185°F)
2.2
SYSTEM
Open Flue 80 mm single pipe - B23
Maximum Horizontal
Maximum Vertical
90° bend is equivalent to
45° bend is equivalent to
CD90S
17 m
17 m
2.1 m
1.3 m
CD115S
14 m
14 m
2.1 m
1.3 m
Concentric 80/125 mm room sealed
Maximum Horizontal
Maximum Vertical
90° bend is equivalent to
45° bend is equivalent to
CD90S
10 m
12 m
1.9 m
1.4 m
CD115S
7 m
8 m
1.9 m
1.4 m
