Technical Data - Potterton Promax Combi HE Plus A Range Installation & Service Instructions Manual

Appliance Type C
13
Appliance Category CAT I
Heat Input CH (Net)
Max
24 model kW 20.5
28 model kW 24.7
33 model kW 28.9
Heat Input CH (Gross) Max
24 model kW 22.7
28 model kW 27.4
33 model kW 32.1
Heat Output CH (Non-Condensing)
Max
24 model kW 20
28 model kW 24
33 model kW 28
Heat Output CH (Condensing)
Max
24 model kW 21
28 model kW 25.9
33 model kW 30.3
Heat Input DHW (Net) Max
24 model kW 24.7
28 model kW 28.9
33 model kW 34
Heat Input DHW (Gross)
Max
24 model kW 27.4
28 model kW 32.1
33 model kW 37.7
Heat Output DHW
Max
24 model kW 24
28 model kW 28
33 model kW 33
Max Gas Rate (Natural Gas - G20)
(After 10 mins)
24 model m /h 2.6
3
28 model m /h 3.1
3
33 model m /h 3.6
3
SEDBUK Declaration
SAP 2005 Seasonal Efficiency for all
models is 91.1%
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.
NOTE: All data in this section are nominal values
and subject to normal production tolerances.
10
© Baxi Heating UK Ltd 2013
C C
Inlet Pressure (Natural Gas - G20)
33 53
mbar
2H
Injector (Natural Gas - G20)
Min
7.5mm (24&28 model)
7
Electrical Supply
9
(Appliance must be connected to an
9.7
earthed supply)
Min
Power Consumption
7.8
155W (24&28 model)
10
Electrical Protection
10.8
External Fuse Rating
Min
Internal Fuse Rating
6.8
Condensate Drain
8.7
To accept 21.5mm (
9.4
Flue Terminal
Dimensions
Min
Connections
7.4
Gas Supply
9.5
Central Heating Flow
10.2
Central Heating Return
Cold Water Mains Inlet
DHW Flow
Pressure Relief Discharge
Outercase Dimensions
Casing Height
Overall Height Inc Flue Elbow
Casing Width
Casing Depth
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.
Weights (kg)
Packaged Boiler Carton 48.6
Installation Lift Weight

4.0 Technical Data

4.1 Promax Combi 24, 28 & 33
20
12mm(33 model)
230V~ 50H z
160W(33 model)
IPX5D
3A
F2L
/ in) plastic waste pipe
3
4
Diameter 100mm
Projection 125mm
copper tails
- 22mm
- 22mm
- 22mm
- 15mm
- 15mm
- 15mm
- 780mm
- 965mm
- 450mm
- 345mm
200 mm Min
150 mm Min*
450 mm Min
(For Servicing)
5 mm Min
(In Operation)
5 mm Min
5 mm Min
(In Operation)
(24) (28) (33)
49.2 51
43.6 44.2 46
5.5
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0 200
NO x Class 5
Central Heating Primary Circuit
Pressures
Safety Discharge
Max Operating
Min Operating
Recommended Operating Range
DHW Circuit
bar
Pressures
Max Operating 8
Min Operating 0.15
Flow Rates (24) (28)
l/min l/min
DHW Flow Rate
@ 30 C Rise 11.43 13.3
o
DHW Flow Rate
@ 35 C Rise 9.8 11.5
o
Min Working
DHW Flow Rate 2 2
IMPORTANT: Where Low Flow Taps or Fittings are
intended to be used in the DHW system connected it is
strongly recommended that the DHW flow rate DOES
NOT fall below 2.5l/min. This will ensure reliable
operation of the DHW function.
Pump
Available Head See graph below
Expansion Vessel - (For Central Heating
only. Integral with appliance)
bar
Min Pre-charge Pressure 0.5
(24,28)
Max Capacity of litre
CH System 125
Primary Water Content
of Boiler (unpressurised) 2.5
Temperatures
C.H. Flow Temp
(adjustable)
25°C to 80°C
max
D.H.W. Flow Temp
(adjustable)
35°C to 60°C
max
dependent upon flow rate
Pump - Available Head
400 600 800 1000
Flow Rate (l/h)
bar
3
2.5
0.5
1-2
(33)
l/min
15.7
13.5
2
(33)
litre
155
2.8
(± 5°C)
(± 5°C)
1200