Instruction manual
STANDARD FEATURES
1 Primary Air Control Air which enters under the
grate for multi fuel burning and to assist a wood log
fire to get started
2 Secondary Air Control Air which enters at the top
of the fire chamber to ensure a cleaner burn and
effective wood burning (pull out to open)
3 Airwash System Part of the secondary Air control
system which diverts hot air down along the front of
the glass to burn off unwanted sooty particulates and
help keep it clean
4 Thermostat Control This adjusts the temperature
of the water leaving the boiler from low to high by
controlling part of the combustion air supply to the
fire chamber
4 System Ports There are four 1” BSP water ports –
two on either side of the firebox
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GENERAL SPECIFICATION
Model Name Alpha Inset Boiler
Model Number AL357i-B
Dimensions (mm): Facia H605 W490 D 95
Dimensions (mm): Firebox External H515 W380 D175
Net Weight 109 kg
PERFORMANCE
From Kiwa GasTec BS EN13229: 2001 Test Aug 2012
WOOD
Intermittent Burning – 1.0 hour refuel period
Nominal Heat Output To Room 4.8 kW
To Water 7.5 kW
TOTAL 12.3 kW
Efficiency (net) 80.2%
Mean CO Emission (at 13%) 0.52%
Mean Flue Gas Temperature 296ºC
Flue Gas Mass Flow 7.0 g/s
MINERAL FUELS (Ancit)
Continuous Burning – 2.0 hour refuel period
Nominal Heat Output To Room 3.7 kW
To Water 8.9 kW
TOTAL 12.6 kW
Efficiency (net) 75.8%
Mean CO Emission (at 13%) 0.47%
Mean Flue Gas Temperature 333ºC
Flue Gas Mass Flow 7.6 g/s
MINIMUM DISTANCES
Minimum Distance from Combustible Materials
Top (shelf) 200 mm
Sides 100 mm
FLUE
Flue configuration top only
Flue outlet diameter 150 mm (6”)
Minimum flue height from top of Inset 4,500 mm (15’)
BOILER
Factory pressure tested to 3.5 Bar maximum
Water capacity 10kg / 10L (2.2 Gal)
Maximum operating Pressure <1.5 Bar
Pipework ports Four x 1” BSP
RECOMMENDED FUELS
Wood Logs: Moisture content <20%
Maximum Wood Fuel Load 3.6 kg (approx 8 lb)
Maximum Log Length 275 mm (11”)
Or Approved Smokeless Fuels (www.solidfuel.co.uk)
Maximum Mineral Fuel Load 3.7 kg (approx 8 lb 2 oz)
REPLACEMENT CONSUMABLES
Heat Resistant Glass 285 x 325 x 4 mm
Door Rope Seal 10 mm dia x app 1700 mm (5’8”) long
Ash Pit Rope Seal 10 mm dia x 370 mm (15”) long
NB There are no firebricks on the Alpha inset Boiler
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