Alpha CD13R, CD18R, CD24R Instruction
Supplementary LPG Boiler
Instructions
Alpha CD13R, 18R and 24R
Wall Mounted, Fan Assisted, Room Sealed, Gas Fired
High Efficiency Condensing Regular Boiler Range
For Technical help or for Service call ...
ALPHA HELPLINE Tel: 0870 3001964
website:www.alpha-innovation.co.uk
Nepicar House, London Road,
Wrotham Heath, Sevenoaks,
Kent TN15 7RS
British Gas
Service Listed
Alpha CD13R British Gas G.C. No. 41 532 11
Alpha CD18R British Gas G.C. No. 41 532 09
Alpha CD24R British Gas G.C. No. 41 532 10
For use with LPG (Propane) only
Leave these instructions with the User
1 INTRODUCTION
This supplement is for the LPG model of the boilers; 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 CD13R, 18R and 24R boilers provide central heating (as required) during the 'ON' times set on your clock (if fitted).
The boilers are designed to operate on open vented or sealed central heating systems using only PROPANE gas.
2 TECHNICAL DA T A
2.1 PERFORMANCE - PROPANE GAS (CAT 13P 3P - G31 - 37 mbar)
Alpha CD13R
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
Gas Supply Pressure (LPG) mbar
in wg
Gas Rate (LPG) m³/h
ft³/h
MAX.
13.8
47 000
12.4
42 300
13.1
44 700
12.1
41 300
2.0
0.8
0.48
17.0
21 100
19 100
20 100
18 400
37.0
14.8
Alpha CD24R
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
Gas Supply Pressure (LPG) mbar
in wg
Gas Rate (LPG) m³/h
ft³/h
MAX.
26.6
90 700
24
81 900
25.6
87 300
23.5
80 200
6.4
2.56
0.94
33.2
25 600
23 200
24 600
22 200
37.0
14.8
MIN.
6.2
5.6
5.9
5.4
0.5
0.2
0.22
7.8
MIN.
7.5
6.8
7.2
6.5
0.6
0.24
0.26
9.2
Alpha CD18R
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
Gas Supply Pressure (LPG) mbar
in wg
Gas Rate (LPG) m³/h
ft³/h
MAX.
20.4
69 600
18.4
62 800
19.6
66 800
18.0
61 400
4.2
1.68
0.72
25.4
21 100
19 100
20 100
18 400
37.0
14.8
MIN.
6.2
5.6
5.9
5.4
0.5
0.2
0.22
7.8
Alpha CD13R, 18R, 24R LPG Supplement
2
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