Technical data

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© Baxi Heating UK Ltd 2011
4.0 Technical Data
4.2 Megaflo System 24 & 28 HE IE LPG
Flue Terminal Diameter 100mm
Dimensions Projection 125mm
Outercase Dimensions
Casing Height - 780mm
Overall Height Inc Flue Elbow - 965mm
Casing Width - 450mm
Casing Depth - 345mm
Pump
Available Head See graph below
Expansion Vessel - (Integral with appliance)
bar
Min Pre-charge Pressure 0.5
litre
Max Capacity of
CH System 125
Primary Water Content
of Boiler (unpressurised) 2.5
Connections copper tails
Gas Supply - 3/4”
Central Heating Flow - 3/4”
Central Heating Return - 3/4”
Pressure Relief Discharge - 1/2”
Temperatures
Flow Temp
(adjustable)
25°C to 80°C max (± 5°C)
NO
x
Class 5
0
200 400 600 800 1000 1200
0.5
1
1.5
2
2.5
3
3.5
4
Metre (wg)
Flow Rate (l/h)
Pump - Available Head
0
5
5.5
4.5
Heat Input (Net) Max Min
24 LPG model kW 24.7 7
28 LPG model kW 28.9 9.7
Heat Output (Non-Condensing)
Max Min
24 LPG model kW 24 6.8
28 LPG model kW 28 9.4
Electrical Supply 230V~ 50H
z
(Appliance must be connected to an
earthed supply)
Power Consumption
24 LPG model 150W
28 LPG model 160W
Electrical Protection
IPX5D
Internal Fuse Rating F2L
Appliance Category CAT I I
2H3P
Inlet Pressure (Propane - G31)
mbar 37
Injector (Propane Gas - G31)
24 LPG model 7.5mm
28 LPG model 12mm
Appliance Type C
13
C
33
C
53
Heat Output (Condensing)
Max Min
24 LPG model kW 25.9 7.4
28 LPG model kW 30.3 10.2
Max Gas Rate (Propane Gas - G31)
(After 10 mins)
24 LPG model kg/h 1.92
28 LPG model kg/h 2.25
Condensate Drain
To accept 21.5mm (
3
/
4
in) plastic waste pipe
Heat Input (Gross) Max Min
24 LPG model kW 27.4 7.8
28 LPG model kW 32.1 10.8
External Fuse Rating 3A
Weights
24 28
Packaged Boiler Carton 53.5kg 54.5kg
Installation Lift Weight 44kg 45kg
Central Heating Primary Circuit
Pressures (Sealed Systems)
bar
Safety Discharge 3
Max Operating 2.5
Min Operating 0.5
Recommended Operating Range 1-2
For ‘Semi-Sealed’ Systems it is recommended that
the system is designed to achieve a pressure of
0.2 bar at the boiler (see Section 6.4).
Clearances
Above Casing 200 mm Min
Below Casing 150 mm Min*
Front 450 mm Min
(For Servicing)
Front 5 mm Min (In Operation)
L.H. Side 5 mm Min
R.H. Side 5 mm Min
(In Operation)
*This is the MINIMUM recommended dimension. Greater
clearance will aid installation and maintenance.
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