10
© Baxi Heating UK Ltd 2014
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 have been certified by 0085.
SEDBUK Declaration For Promax System HE Plus
The seasonal efficiency (SEDBUK) for all models is:-
91.2% Band A
4.0 Technical Data
4.1 Promax System 12,15,18, 24, & 32 HE Plus 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
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 MINIMUM recommended dimension. Greater
clearance will aid installation and maintenance.
Heat Input (Net) Max Min
12 model kW 12.4 4
15 model kW 15.4 3.9
18 model kW 18.5 4.3
24 model kW 24.7 7
32 model kW 32.8 9.7
Heat Output (Non-Condensing)
Max Min
12 model kW 12 3.9
15 model kW 15 3.9
18 model kW 18 4.2
24 model kW 24 6.8
32 model kW 32 9.4
Electrical Supply 230V~ 50H
z
(Appliance must be connected to an
earthed supply)
Power Consumption
12 model 145W
15 model 130W
18 model 140W
24 model 150W
32 model 160W
Electrical Protection
IPX5D
Internal Fuse Rating F2L
Appliance Category CAT I
2H
Inlet Pressure (Natural Gas - G20)
mbar 20
Injector (Natural Gas - G20)
12 model 4mm
15 model 4.5mm
18 model 5.7mm
24 model 7.5mm
32 model 12mm
Appliance Type C
13
C
33
C
53
Heat Output (Condensing)
Max Min
12 model kW 13 4.2
15 model kW 16.2 4.2
18 model kW 19.4 4.5
24 model kW 25.9 7.4
32 model kW 34.4 10.2
Max Gas Rate (Natural Gas - G20)
(After 10 mins)
12 model m
3
/h 1.31
15 model m
3
/h 1.69
18 model m
3
/h 1.95
24 model m
3
/h 2.61
32 model m
3
/h 3.48
Condensate Drain
To accept 21.5mm (
3
/
4
in) plastic waste pipe
Heat Input (Gross) Max Min
12 model kW 13.8 4.4
15 model kW 17.1 4
18 model kW 20.5 4.5
24 model kW 27.4 7.8
32 model kW 36.4 10.8
External Fuse Rating 3A
Weights
12, 15 &18 24
Packaged Boiler Carton 43.6kg 44.2kg
Installation Lift Weight 38.6kg 39.2kg
32
Packaged Boiler Carton 46kg
Installation Lift Weight 41kg
NOTE: All data in this section are nominal values
and subject to normal production tolerances.
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