Baxi Potterton G.C.No 47 393 21, G.C.No 47 393 23 manual Technical Data, Promax Combi 24, 28

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4.0Technical Data

4.1Promax Combi 24, 28 & 33

Appliance Type

 

 

 

C13

C33

C53

 

 

Appliance Category

CAT I 2H

 

 

 

Heat Input CH (Net)

Max

Min

 

 

24 model

 

kW

20.5

7

 

 

28 model

 

kW

24.7

9

 

 

33 model

 

kW

28.9

9.7

 

 

 

 

 

 

 

 

 

 

Heat Input CH (Gross)

Max

Min

 

 

24 model

kW

22.7

7.8

 

 

28 model

kW

27.4

10

 

 

33 model

kW

32.1

10.8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heat Output CH (Non-Condensing)

 

 

 

 

 

 

 

 

 

 

 

 

 

Max

Min

 

 

24 model

 

kW

20

6.8

 

 

28 model

 

kW

24

8.7

 

 

33 model

 

kW

28

9.4

 

 

 

 

 

 

 

 

 

 

 

 

 

Heat Output CH (Condensing)

 

 

 

 

 

 

 

 

 

 

 

 

 

Max

Min

 

 

24 model

 

kW

21

7.4

 

 

28 model

 

kW

25.9

9.5

 

 

33 model

 

kW

30.3

10.2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

m3/h

2.6

 

 

 

 

 

28 model

 

m3/h

3.1

 

 

 

 

 

33 model

 

m3/h

3.6

 

 

 

Inlet Pressure (Natural Gas - G20)

mbar

20

 

 

 

 

 

 

 

 

 

Injector (Natural Gas - G20)

 

 

 

7.5mm (24&28 model)

12mm(33 model)

 

 

 

 

 

Electrical Supply

 

230V~ 50Hz

(Appliance must be connected to an

earthed supply)

 

 

 

 

 

 

 

 

 

 

 

Power Consumption

 

 

 

 

155W (24&28 model)

160W(33 model)

 

 

 

 

 

 

 

Electrical Protection

 

 

 

 

 

 

 

IPX5D

 

 

 

 

 

 

 

External Fuse Rating

 

3A

 

 

 

 

 

 

 

Internal Fuse Rating

 

F2L

Condensate Drain

To accept 21.5mm (3/4 in) plastic waste pipe

Flue Terminal

Diameter

 

100mm

Dimensions

Projection

125mm

 

 

 

 

 

Connections

 

 

copper tails

Gas Supply

 

 

-

22mm

Central Heating Flow

 

 

-

22mm

Central Heating Return

-

22mm

Cold Water Mains Inlet

-

15mm

DHW Flow

 

 

-

15mm

Pressure Relief Discharge

-

15mm

 

 

 

 

 

 

Outercase Dimensions

 

 

Casing Height

 

 

 

- 780mm

Overall Height Inc Flue Elbow

 

- 965mm

Casing Width

 

 

 

- 450mm

Casing Depth

 

 

 

- 345mm

 

 

 

 

 

 

 

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.

Weights (kg)

 

 

 

 

(24)

(28)

(33)

Packaged Boiler Carton

48.6

49.2

51

Installation Lift Weight

43.6

44.2

46

NOx Class

 

5

 

 

Central Heating Primary Circuit

 

Pressures

 

 

 

 

 

 

 

 

 

 

bar

Safety Discharge

 

 

 

3

Max Operating

 

 

 

2.5

Min Operating

 

 

 

0.5

Recommended Operating Range

1-2

 

 

 

 

 

 

 

DHW Circuit

 

bar

 

Pressures

 

 

 

 

Max Operating

 

8

 

 

Min Operating

 

0.15

 

 

 

 

 

 

 

 

Flow Rates

(24)

(28)

(33)

 

 

 

l/min

l/min

l/min

DHW Flow Rate

 

 

 

 

@ 30o C Rise

11.43

13.3

15.7

DHW Flow Rate

 

 

 

 

@ 35o C Rise

9.8

11.5

13.5

Min Working

 

 

 

 

DHW Flow Rate

2

2

 

2

 

 

 

 

 

 

Pump

 

 

 

 

Available Head

See graph below

 

 

 

 

Expansion Vessel

- (For Central Heating

only. Integral with appliance)

 

 

 

 

 

 

 

bar

 

Min Pre-charge Pressure

0.5

 

 

 

 

 

(24,28)

(33)

Max Capacity of

 

litre

litre

CH System

 

125

155

Primary Water Content

 

 

 

of Boiler (unpressurised)

2.5

2.8

Temperatures

C.H. Flow Temp (adjustable)

25°C to 80°C max (± 5°C)

D.H.W. Flow Temp (adjustable)

35°C to 60°C max (± 5°C) dependent upon flow rate

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.

Pump - Available Head

 

5.5

 

5

 

4.5

 

4

 

3.5

 

3

(wg)

2.5

 

Metre

2

1.5

 

 

1

0.5

0

0

200

400

600

800

1000

1200

10© Baxi Heating UK Ltd 2011

Flow Rate (l/h)

Image 10
Contents Installation & Service Instructions 0086 Installer Notification Guidelines Scheme Members onlyLegislation Important Installation, Commissioning, Service & RepairCodes of Practice refer to the most recent version Preparation Safe Manual HandlingGeneral TechniqueContents Introduction Contents of PackDescription General Layout LayoutAppliance Operation Frost Protection ModePump Protection Technical Data Promax Combi 24, 28Tap Rail Dimensions and FixingsOrientation 32.5 mm Condensate Drain 65 mmCentral Heating Circuit System DetailsInformation BypassExpansion Vessel Central Heating only System Filling and Pressurising FigPressure Relief Valve Fig Showers Domestic Hot Water Circuit FigHard Water Areas Location Site RequirementsAt Least 1.5 7.2 Clearances Figs Gas Supply Site RequirementVentilation of Compartments Electrical SupplyCondensate Drain Flue Flue terminal guardHorizontal Flue Systems Each fitting to aid assemblyFlue Options Horizontal Flues120mm Min Vertical FluesTwin & Vertical Flue Systems ApartKey Accessory Size Code No Flue AccessoriesTelescopic Internal Flue Kit Twin Flue Connection Twin Flue Duct AdaptorAir Duct Connection Flue Duct Connection Boiler Adaptor Flue Trim Flue DimensionsFor Roof Terminals Terminal Guard FigPlume Displacement Kit Fig Plume DisplacementMetres Ring Adaptor Example 28/33Determining Permissible Lengths 5121368General Fitting Notes 30mmUsing a suitable bit e.g mm, drill through Elbow to allow the flue to be installed as shown60Ø extension piece. It must be secured using two Extension and outlet. Secure using two of the screwsFlushing InstallationUnpacking & Initial Preparation After considering the site requirementsCondensate Drain see section Fitting The BoilerFitting the Pressure Relief Discharge Pipe Fig Tighten all the connectionsFlue Elbow Fitting The FlueWall Thickness Waste Ensure Elbow is fully Engaged into Boiler25mm Extension Cut End Inner Flue Support BracketEnsure Extension is fully engaged into Boiler Adaptor Preliminary Electrical Checks Making The Electrical ConnectionsTerminal Block Cover Cable Clamp Commissioning Commissioning the BoilerPressure Completion CompletionCase Front Panel Facia Panel Annual Servicing Inspection Servicing13 .1 Annual Servicing Case Front Panel Facia Panel Securing ScrewsBurner Sensing Electrode 10 ±1Viewing Window Igniter Fig Changing ComponentsSpark and Sensing Electrodes Fig Injector Fig Fan FigVenturi Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan CollectorInsulation Fig Burner FigBurner Gasket Extension Piece DHW Temperature Sensor NTC Fig Central Heating Temperature Sensor NTC FigSafety Thermostat Fig Flue/Heat Exchanger Thermostat Sensor FigPump Complete Fig Pump Head Only FigAutomatic Air Vent Fig Pressure Gauge Figs Hall Effect Sensor FigDiverter Valve Motor Unit & Assembly Fig Plate Heat Exchanger FigSelector Switch Fig 14.22 P.C.B. FigGas Valve Fig Throttle Adjustment ScrewExpansion Vessel Fig Flue Adaptor Test Point Plug Analyser Probe Setting the Gas ValveSetting the Gas Valve CO2 check ThrottleIllustrated Wiring Diagram Electrical306 Short Parts ListShort Parts List 302Initial Fault Finding Checks Fault FindingError Codes Reset position for 5 seconds Error 133 flashingGo to section ‘A’ Turn the selector switch to Pump runsTurn Domestic Hot Water Turn selector switch toError 133 flashing Go to section ‘I’ Open DHW tap fullyFan jammed or faulty winding Replace PCB PCB X3 connector terminals 3Switch terminal Replace waterGas at burner Check wiring Viewing WindowReplace sensor or PCB E28 Replace gas valveReplace PCB Is there 230V at Replace safety thermostatReplace sensor Page Page Condensing Boilers only Service Record Brooks House, Coventry Road, Warwick. CV34 4LL

G.C.No 47 393 22, G.C.No 47 393 23, G.C.No 47 393 21 specifications

The Baxi Potterton range, specifically the models identified by G.C. No 47 393 21, G.C. No 47 393 23, and G.C. No 47 393 22, represents a robust selection of domestic heating solutions that cater to diverse consumer needs. Known for their reliability and efficiency, these boilers are designed with advanced technologies that ensure consistent performance and high levels of user satisfaction.

One of the primary features of these models is their compact design, allowing for flexibility in installation within various home environments. Whether placed in a kitchen, utility room, or cupboard, the space-saving configurations make them ideal for homeowners with limited installation areas.

These boilers utilize a high-efficiency heat exchanger that maximizes heating output while minimizing fuel consumption. This not only results in lower energy bills for consumers but also contributes positively towards reducing carbon footprints. The G.C. No 47 393 21, 47 393 22, and 47 393 23 models are known for their impressive Seasonal Efficiency Ratings, indicating superior energy efficiency, which is vital for compliance with modern building regulations.

In terms of technology, these models feature user-friendly digital displays that provide real-time information on system performance, making it easier for users to monitor and manage their home's heating needs. Additionally, some models come equipped with advanced control systems that allow homeowners to adjust settings remotely via smartphone applications, further enhancing convenience.

Safety is paramount in the design of Baxi Potterton boilers. Each unit is equipped with multiple safety features including built-in frost protection, pressure relief valves, and gas leak detection systems. This commitment to safety ensures peace of mind for users, knowing that their heating system is designed to operate securely.

Another significant characteristic of these models is their compatibility with renewable energy sources. They can work in conjunction with solar thermal systems and can be integrated into larger renewable setups, promoting sustainability in home heating.

In summary, the Baxi Potterton G.C. No 47 393 21, G.C. No 47 393 23, and G.C. No 47 393 22 models are a testament to modern engineering and design. With their emphasis on efficiency, safety, and convenience, they provide exceptional heating solutions for today's energy-conscious homeowners.