Alpha C23 - Page 2

2
C23/27 LPG Supplement
37.0
14.8
11.0
2.42
62
144
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 C23/27 range of combination boilers are wall mounted, fan assisted room-sealed combination boilers providing
both central heating and domestic hot water at mains pressure.
The boilers are designed for use with a fully pumped sealed and pressurised heating system using only PROPANE gas.
2 TECHNICAL DATA
2.1 PERFORMANCE - PROPANE GAS
MAX.
28.5
97 200
23.3
79 500
36.0
14.4
1.1
39.1
MIN.
12.3
42 000
9.3
31 700
7.3
2.92
0.45
16.1
MAX.
28.5
97 200
23.3
79 500
36.0
14.4
1.1
39.1
MIN.
12.3
42 000
9.3
31 700
7.3
2.92
0.45
16.1
Room sealed chamber
panel fitted
Room sealed chamber
panel fitted
Central Heating
Heat Input kW
(Gross) Btu/h
Heat Output (modulating) kW
Btu/h
Burner Pressure mbar
Settings in wg
Gas Supply Pressure (LPG) mbar
in wg
Gas Rate (LPG) m³/h
ft³/h
CH Water Temp. (Approx. max.) °C
°F
37.0
14.8
82
180
37.0
14.8
9.5
2.1
62
144
Domestic Hot Water
Heat Input kW
(Gross) Btu/h
Output to Water (modulating) kW
Btu/h
Burner Pressure mbar
Settings in wg
Gas Supply Pressure (LPG) mbar
in wg
Gas Rate (LPG) m³/h
ft³/h
Flow Rate at 35°C Rise L/min
G.P.M.
Outlet Water Temp. (Approx. max.) °C
°F
2.2 PERFORMANCE - PROPANE GAS
MAX.
33.0
112 600
27.0
92 100
36.9
14.76
1.3
47.1
MIN.
14.3
48 800
11.0
37 500
7.0
2.8
0.45
16.1
MAX.
33.0
112 600
27.0
92 100
36.4
14.76
1.3
47.1
MIN.
10.8
36 800
8.1
27 600
7.0
2.8
0.35
12.7
Room sealed chamber
panel fitted
Room sealed chamber
panel fitted
Central Heating
Heat Input kW
(Gross) Btu/h
Heat Output (modulating) kW
Btu/h
Burner Pressure mbar
Settings in wg
Gas Supply Pressure (LPG) mbar
in wg
Gas Rate (LPG) m³/h
ft³/h
CH Water Temp. (Approx. max.) °C
°F
37.0
14.8
82
180
Domestic Hot Water
Heat Input kW
(Gross) Btu/h
Output to Water (modulating) kW
Btu/h
Burner Pressure mbar
Settings in wg
Gas Supply Pressure (LPG) mbar
in wg
Gas Rate (LPG) m³/h
ft³/h
Flow Rate at 35°C Rise L/min
G.P.M.
Outlet Water Temp. (Approx. max.) °C
°F
Alpha C23 Alpha C23
Alpha C27 Alpha C27