Technical Data - Baxi Platinum Combi 24 Installation And Service Manual

Appliance Type C
13
Appliance Category CAT I
Heat Input CH Qn Hs (Gross)
Max
24 model kW 22.7
28 model kW 27.4
33 model kW 32.1
40 model kW 36.4
Heat Output CH Pn (Non-Condensing)
Max
24 model kW 20
28 model kW 24
33 model kW 28
40 model kW 32
Heat Output CH Pnc (Condensing)
Max
24 model kW 21.0
28 model kW 25.9
33 model kW 30.3
40 model kW 34.4
Heat Input DHW Qnw Hs (Gross)
Max
24 model kW 27.4
28 model kW 32.1
33 model kW 37.8
40 model kW 45.7
Heat Output DHW Max
24 model kW 24.0
28 model kW 28.0
33 model kW 33.0
40 model kW 40.0
Max Gas Rate (Natural Gas - G20)
(After 10 mins)
24 model m 3 /h 2.61
28 model m 3 /h 3.1
33 model m 3 /h 3.6
40 model m 3 /h 4.36
NO x Class
Product Characteristics Databae
(SEDBUK)
SAP 2009 Annual Efficiency
24 & 28 - 88.6%
33 & 40 - 88.5%
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 0085.
NOTE: All data in this section are nominal values
and subject to normal production tolerances.
10
© Baxi Heating UK Ltd 2015
C C
Inlet Pressure (Natural Gas - G20)
33 53
mbar
2H
Injector (Natural Gas - G20)
7.5mm (24 & 28) 12mm (33 & 40)
Min
Electrical Supply
7.8
(Appliance must be connected to an
10.0
earthed supply)
10.8
11.0
Power Consumption
24
28
33
Min
40
6.8
8.7
Electrical Protection
9.4
9.6
External Fuse Rating
Min
Internal Fuse Rating
7.4
9.5
Condensate Drain
10.2
To accept 21.5mm (
12.1
Flue Terminal
Dimensions
Connections
Gas Supply
Central Heating Flow
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
5
L.H. Side
R.H. Side
*This is MINIMUM recommended dimension. Greater
clearance will aid installation and maintenance.
Weights
Packaged Boiler Carton
Installation Lift Weight
Packaged Boiler Carton
Installation Lift Weight
Packaged Boiler Carton
Installation Lift Weight

4.0 Technical Data

4.1 Platinum 24, 28, 33 & 40 Combi ErP
20
230V~ 50H z
85w
120w
125w
125w
IPX0D (with timer)
IPX5D (without timer)
3A
F2L
3 / in) plastic waste pipe
4
Diameter 100mm
Projection 125mm
copper tails
- 22mm
- 22mm
- 22mm
- 15mm
- 15mm
- 15mm
- 780mm
- 965mm
- 450mm
- 345mm
175 mm Min
150 mm Min*
450 mm Min
(For Servicing)
5 mm Min
(In Operation)
5 mm Min
5 mm Min
(In Operation)
5.5
(24 & 28 model)
5
46.0 kg
4.5
40.2 kg
(33 model) 4
47.5 kg
3.5
41.7 kg
3
(40 model)
2.5
48.0 kg
42.2 kg
2
1.5
1
0.5
0
0
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 l/min
DHW Flow Rate
@ 30 o C Rise 11.43 13.3
DHW Flow Rate
@ 35 o C Rise 9.8 11.5
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)
litre
Max Capacity of
CH System 125
For greater system capacities an additional
expansion vessel MUST be fitted.
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
200 400 600 800
Flow Rate (l/h)
bar
3
2.5
0.5
1-2
(33) (40)
l/min
15.7 19.1
13.5 16.4
2 2
(33 & 40)
litre
125
2.8
(± 5°C)
(± 5°C)
1000 1200