Supplementary LPG Boiler
Instructions
Alpha 240/280 Range
Wall Mounted, Fan Assisted, Room Sealed, Gas Fired
Combination Boiler
For Technical help or for Service call ...
ALPHA HELPLINE
Tel: 0870 3001964
0051
Nepicar House, London Road,
Wrotham Heath, Sevenoaks,
Kent TN15 7RS
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 240/280 range of boilers are wall mounted, fan assisted room-sealed combination boilers. Heat output is controlled
by a modulating gas valve.
The boiler, providing both central heating and domestic hot water at mains pressure, is designed for use with a fully pumped,
sealed and pressurised heating system using only PROPANE gas.
2 TECHNICAL DATA
2.1 PERFORMANCE (Alpha 240 Range) - PROPANE GAS
Central Heating
Heat Input kW
(Gross) Btu/h
Heat Output (modulating) kW
Btu/h
Burner Pressure mbar
Settings in wg
Room sealed chamber
panel fitted
Gas Supply Pressure (LPG) mbar
in wg
Gas Rate m³/h
ft³/h
CH Water Temp. (Approx. max.) °C
°F
MAX.
28.63
97 700
23.3
79 500
36.6
14.6
1.1
39.1
MIN.
11.76
40 150
9.3
31 700
6.2
2.84
37.0
14.8
0.45
16.1
82
180
2.2 PERFORMANCE (Alpha 280) - PROPANE GAS
Central Heating
Heat Input kW
(Gross) Btu/h
Heat Output (modulating) kW
Btu/h
Burner Pressure mbar
Settings in wg
Room sealed chamber
panel fitted
Gas Supply Pressure (LPG) mbar
in wg
Gas Rate m³/h
ft³/h
CH Water Temp. (Approx. max.) °C
°F
MAX.
34.5
117 700
28.0
95 500
35.0
14.0
1.3
47.1
MIN.
11.76
40 150
9.3
31 700
4.0
1.6
37.0
14.8
0.45
16.1
82
180
Domestic Hot Water
Heat Input kW
(Gross) Btu/h
Output to Water (modulating) kW
Btu/h
Burner Pressure mbar
Settings in wg
Room sealed chamber
panel fitted
Gas Supply Pressure (LPG) mbar
in wg
Gas Rate m³/h
ft³/h
Flow Rate at 35°C Rise L/min
G.P.M.
Outlet Water Temp. (Approx. max.) °C
°F
Domestic Hot Water
Heat Input kW
(Gross) Btu/h
Output to Water (modulating) kW
Btu/h
Burner Pressure mbar
Settings in wg
Room sealed chamber
panel fitted
Gas Supply Pressure (LPG) mbar
in wg
Gas Rate m³/h
ft³/h
Flow Rate at 35°C Rise L/min
G.P.M.
Outlet Water Temp. (Approx. max.) °C
°F
MAX.
28.63
97 700
23.3
79 500
36.6
14.6
1.1
39.1
MAX.
34.5
117 700
28.0
95 5000
35.0
14.0
1.3
47.1
MIN.
11.76
40 150
9.3
31 700
6.2
2.84
37.0
14.8
0.45
16.1
9.5
2.1
62
144
MIN.
11.76
40 150
9.3
31 700
4.0
1.6
37.0
14.8
0.45
16.1
11.4
2.5
62
144
LPG Supplement
2
2.3 GAS SUPPLY
The Alpha 240 boiler requires a gas rate of 2.0 kg/h (4.4 lb/h) or 3.9 litres/h of liquid gas. The Alpha 280 boiler requires a gas
rate of 2.4kg/h (5.3lb/h) or 4.7 litres/h of liquid gas.
The supply pipes must be capable of delivering this quantity of gas in addition to the demand from any other appliances in the
house. The boiler requires at least a 22 mm gas supply pipe.
The complete installation must be tested for gas soundness against leakage.
The local Propane gas supplier should be consulted, at the installation planning stage, in order to establish the availability of an
adequate supply of gas.
Installation pipes, cylinders and pressure regulators should be fitted in accordance with BS 5482:1. Bulk tank installation must
comply with the requirements of the Home Office code of practice for the storage of liquefied petroleum gas at fixed installations.
3 BOILER LOCATION
The boiler must not be installed in a room or internal space below ground level, e.g. in a basement or cellar, except where at
least one side is open to ground level.
4 INSTALLATION
In addition to the regulations and requirements stated in the Installation and Servicing instructions, the boiler must be installed
in accordance with BS 5482:1 - The Installation of Propane Burning Appliances in Permanent Dwellings.
5 COMMISSIONING
The boiler has been tested and factory set for use with Propane gas and it should only be necessary to ensure the correct gas
supply pressure of 37 mbar is available.
6 PARTS LIST
The following parts are special to Propane boilers. For other 'Short List Spare Parts', refer to the Installation and Servicing
instructions supplied with the boiler.
6.1 Alpha 240 Range
Components
Main burner injectors
Pilot injector (N/A to Alpha 240E)
Gas valve spring
Conversion kit
Qty.
15
1
1
1
Type
0.69 mm
0.14 mm
Honeywell
LPG
Alpha Part No.
5202840
5201570
8380380
KHG 714022310
6.2 Alpha 280
Components
Main burner injectors
Gas valve spring
Conversion kit
Qty.
15
1
1
Type
0.74 mm
Honeywell
LPG
Alpha Part No.
5204321
8380381
5636290
LPG Supplement
3
DETAILS OF BOILER INSTALLATION
Date of Installation: ......................................................................
Name of Installer: .........................................................................
Address: ......................................................................................
....................................................................................................
....................................................................................................
....................................................................................................
Postcode: ....................................................................................
Telephone No: .............................................................................
Boiler Serial Number: (LPG) ........................................................
(see inside controls panel hinged cover)
Alpha Therm Limited.
Nepicar House, London Road, Wrotham Heath
Sevenoaks, Kent TN15 7RS
email: info@alphatherm.co.uk
website: www.alpha-innovation.co.uk
These instructions have been carefully prepared but we
reserve the right to alter the specification at any time in
the interest of product improvement.
© Alpha Therm Limited 1996.
Leaflet compiled and designed by Publications Unlimited (01670) 356525
Part No. 917.898.2
06/96/D32
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