Technical Data - Baxi Megaflo 2 System Compact GA Range Installation & Servicing Instructions Manual

Appliance Type C C C
13 33
Appliance Category CAT I
Heat Input CH (Net) Max
12 model kW 12
15 model kW 15
18 model kW 18
24 model kW 24
28 model kW 28
Heat Output CH (Non-Condensing)
Max
12 model kW 12
15 model kW 15
18 model kW 18
24 model kW 24
28 model kW 28
Heat Output CH (Condensing)
Max
12 model kW 12.7
15 model kW 15.9
18 model kW 19
24 model kW 25.4
28 model kW 29.6
Injector
12 model mm 3
15 model mm 3.3
18 model mm 3.6
24 model mm 4.6
28 model mm 4.9
NATURAL GAS ONLY !
Max Gas Rate (Natural Gas - G20)
(After 10 mins)
12 model m 3 /h 1.27
15 model m 3 /h 1.59
18 model m 3 /h 1.90
24 model m 3 /h 2.54
28 model m 3 /h 2.96
Inlet Pressure (Natural Gas - G20)
mbar 20
PROPANE ONLY !
Max Gas Rate (Propane - G31)
(After 10 mins)
12 model kg/h 0.93
15 model kg/h 1.17
18 model kg/h 1.4
24 model kg/h 1.86
28 model kg/h 2.18
Inlet Pressure (Propane - G31)
mbar 37
NOTE: All data in this section are nominal values
and subject to normal production tolerances.
10
© Baxi Heating UK Ltd 2013
Electrical Supply
C
43 53
(Appliance must be connected to an
earthed supply)
2H 3P
Min Power Consumption
2.1
12 model
2.2
15 model
2.6 18 model
3.5 24 model
4.1
28 model
Electrical Protection
Min
2
External Fuse Rating
2.1
2.5
Internal Fuse Rating
3.4
Condensate Drain
4
To accept 21.5mm (
Flue Terminal
Min
Dimensions
2.2
Connections
2.3
Gas Inlet
2.8
Heating Flow
3.7
Heating Return
4.3
Pressure Relief Discharge
Clearances
Above Casing
Below Casing
Front
Front
L.H. Side
R.H. Side
*This is MINIMUM recommended dimension. Greater
clearance will aid installation and maintenance.
Outercase Dimensions
Casing Height
Overall Height Inc Flue Elbow
Casing Width
Casing Depth
*This can be reduced to 290mm by removing the
boiler control access flap
SAP 2005 Seasonal Efficiency for N. G.
SAP 2005 Seasonal Efficiency for L.P.G.
SAP 2009 Annual Efficiency for N. G.
SAP 2009 Annual Efficiency for L.P.G.
This value is used in the UK Government's Standard
Assessment Procedure (SAP) for energy rating of
dwellings. The test data from which it has been calculated
has been certified by 0087.

4.0 Technical Data

4.1
230V~ 50H z
W 110
W 108
W 125
W 104
W 135
IPX5D
3A
F2L
3 / in) plastic waste pipe
4
Diameter 100mm
Projection 125mm
copper tails
- 22mm
- 22mm
- 22mm
- 15mm
175 mm Min
150mm Min*
450mm Min
(For Servicing)
5mm Min
(In Operation)
5mm Min
5mm Min
- 700mm
- 860mm
- 390mm
- 300*mm
SEDBUK Declaration
models is 91.1%
models is 93.2%
models is 89%
models is 91%
(See Section 18.0 for 32 kW model)
Weights
(12/15/18/24)
Packaged Boiler Carton 36.5kg
Installation Lift Weight 32.5kg
(28 model)
Packaged Boiler Carton 38.5kg
Installation Lift Weight 34.5kg
NO x Class 5
± 0.7
CO 2 N.G. 9.0%
L.P.G. 10.5%
Central Heating Primary Circuit
Pressures
Safety Discharge
Max Operating
Min Operating
Recommended Operating Range
Pump
Available Head See graph below
Expansion Vessel - (For Central Heating only.
Integral with appliance)
bar
Min Pre-charge Pressure 0.5
(12, 15, 18, 24 & 28)
litre
Max Capacity of
CH System 100
Primary Water Content
of Boiler (unpressurised) 2.5
Temperatures
C.H. Flow Temp
(adjustable)
25°C to 80°C
Pump - Available Head
6
5.5
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0 200 400 600
Flow Rate (l/h)
± 1.0
bar
3
2.5
0.5
1-2
(± 5°C)
max
800 1000 1200