Baxi Megaflo System HE A Range Installation & Servicing Instructions

10
© Baxi Heating UK Ltd 2013
This value is used in the UK Government’s Standard Assessment Procedure
(SAP 2005) for energy rating of dwellings. The test data from which it has
been calculated have been certified by 0087.
SEDBUK (SAP) Declaration
The seasonal efficiency (SEDBUK) for all models is:-
91.2% Band A
4.0 Technical Data
4.1 Megaflo System 15, 18, 24, 28 & 32 HE A
Flue Terminal Diameter 100mm
Dimensions Projection 125mm
Outercase Dimensions
Casing Height - 780mm
Overall Height Inc Flue Elbow - 965mm
Casing Width - 450mm
Casing Depth - 345mm
Central Heating Primary Circuit
Pressures
bar
Safety Discharge 3
Max Operating 2.5
Min Operating 0.5
Recommended Operating Range 1-2
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 - 22mm
Central Heating Flow - 22mm
Central Heating Return - 22mm
Pressure Relief Discharge - 15mm
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
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.
A greater clearance will aid installation and maintenance.
Heat Input (Net) Max Min
15 model kW 15.4 4
18 model kW 18.5 4.3
24 model kW 24.7 7
28 model kW 28.9 9.7
32 model kW 32.8 9.7
Heat Output (Non-Condensing)
Max Min
15 model kW 15 3.9
18 model kW 18 4.2
24 model kW 24 6.8
28 model kW 28 9.4
32 model kW 32 9.4
Electrical Supply 230V~ 50H
z
(Appliance must be connected to an
earthed supply)
Power Consumption
15 model 130W
18 model 140W
24 model 150W
28 & 32 models 160W
Electrical Protection
IPX5D
Internal Fuse Rating F2L
Appliance Category CAT I
2H
Inlet Pressure (Natural Gas - G20)
mbar 20
Injector (Natural Gas - G20)
15 model 4.5mm
18 model 5.7mm
24 model 7.5mm
28 model 12mm
32 model 12mm
Appliance Type C
13
C
33
C
53
Heat Output (Condensing)
Max Min
15 model kW 16.2 4.2
18 model kW 19.4 4.5
24 model kW 25.9 7.4
28 model kW 30.3 10.2
32 model kW 34.4 10.2
Max Gas Rate (Natural Gas - G20)
(After 10 mins)
15 model m
3
/h 1.69
18 model m
3
/h 1.95
24 model m
3
/h 2.61
28 model m
3
/h 3.1
32 model m
3
/h 3.48
Condensate Drain
To accept 21.5mm (
3
/
4
in) plastic waste pipe
Heat Input (Gross) Max Min
15 model kW 17.1 4.4
18 model kW 20.5 4.8
24 model kW 27.4 7.8
28 model kW 32.1 10.8
32 model kW 36.4 10.8
External Fuse Rating 3A
Weights
15 & 18 24
Packaged Boiler Carton 43.6kg 44.2kg
Installation Lift Weight 38.6kg 39.2kg
28 & 32
Packaged Boiler Carton 46kg
Installation Lift Weight 41kg
NOTE: All data in this section are nominal values
and subject to normal production tolerances.

Baxi Megaflo System HE A Range Specifications

General

Brand	Baxi
Model	Megaflo System HE A Range
Category	Boiler
Language	English