Alpha CD18, CD24, CD30, CD32 Instruction
Supplementary LPG Boiler
Instructions
Alpha CD18/24/30/32
Wall Mounted, Fan Assisted, Room Sealed, Gas Fired
High Efficiency Condensing Boilers
For Technical help or for Service call ...
ALPHA HELPLINE
Tel: 0870 3001964
Nepicar House, London Road,
Wrotham Heath, Sevenoaks,
Kent TN15 7RS
*HEJEID/=I
Service Listed
Alpha CD18S British Gas G.C. No. 41 532 13
Alpha CD24C British Gas G.C. No. 47 532 19
Alpha CD24S British Gas G.C. No. 41 532 02
Alpha CD30S British Gas G.C. No. 41 532 14
Alpha CD32C British Gas G.C. No. 47 532 21
For use with LPG (Propane) only
Leave these instructions with the User
1 INTRODUCTION
This supplement is for the LPG model of the boiler; it must be read in conjunction with the 'Installation and Servicing
Instructions' supplied with the boiler and provides the extra information which is particular to LPG.
The Alpha CD24C and CD32C are combination boilers providing both central heating and domestic hot water at mains
pressure. The CD18S, CD24S and CD30S are System boilers providing heating only for sealed central heating systems.
The boilers are designed for use with a fully pumped, sealed and pressurised heating system using only PROPANE gas.
2 TECHNICAL DATA
PERFORMANCE - PROPANE GAS
(CAT I3P 3P - G31 - 37 mbar)
Alpah CD18S
Central Heating
Heat Input (H
)kW
s
(Gross) Btu/h
Heat Input (Hi)kW
(Net) Btu/h
Heat Output (Hs condensing) kW
(50°C/30°C) Btu/h
Heat Output (Hi non-condensing)kW
(80°C/60°C) Btu/h
Differential Burner mbar
Pressure in wg
Room sealed
chamber panel
fitted
MAX.
20.3
69 200
18.3
62 400
19.5
66 500
18.1
61 800
3.9
1.56
Gas Supply Pressure (LPG) mbar
in wg
Gas Rate (LPG) m³/h
ft³/h
0.71
25.1
MIN.
5.5
18 800
5.0
17 000
5.3
18 100
4.7
16 050
0.35
0.14
37.0
14.8
0.26
9.2
Alpha CD24C and CD24S Alpha CD24C
Central Heating
Heat Input (H
)kW
s
(Gross) Btu/h
Heat Input (Hi)kW
(Net) Btu/h
Heat Output (Hs condensing) kW
(50°C/30°C) Btu/h
Heat Output (Hi non-condensing)kW
(80°C/60°C) Btu/h
Differential Burner mbar
Pressure in wg
Room sealed
chamber panel
fitted
MAX.
26.4
90 100
24.0
82 000
25.4
86 700
23.5
81 135
6.7
2.7
Gas Supply Pressure (LPG) mbar
in wg
Gas Rate (LPG) m³/h
ft³/h
1.03
36.6
MIN.
18 800
17 100
18 100
16 018
0.16
37.0
14.8
0.42
15.1
5.5
5.0
5.3
4.7
0.4
Domestic Hot Water
Heat Input (H
(Gross) Btu/h
Heat Input (Hi)kW
(Net) Btu/h
Output to Water (Hs)kW
(modulating) Btu/h
Differential Burner mbar
Pressure in wg
Gas Supply Pressure (LPG) mbar
Gas Rate (LPG) m³/h
Flow Rate at 35°C Rise L/min
Specific Flow Rate (D) at 30°C Rise L/min
(Flow rate @ 30K to EN625) gal/min
MAX.
)kW
s
26.4
90 100
24.0
82 000
24.20
82 600
Room sealed
chamber panel
fitted
6.7
2.7
37.0
in wg
14.8
1.03
ft³/h
36.6
9.6
gal/min
2.2
11.2
2.5
MIN.
5.5
18 800
5.0
17 100
4.97
17 000
0.4
0.16
0.42
15.1
CD18/24/30/32 LPG Supplement
2
Loading...