Spark Generator

Plug

Electrode

Fan

Injector

Note position of Slot

Fig. 49

10.0 Changing Components

10.5Fan (Fig. 49)

1.Disconnect the two plugs from the fan motor and remove the sensing pipe from between the gas valve and fan outlet.

2.Remove the gas feed pipe and washers, and extract the injector from the gas/air inlet manifold.

3.For ease of access disconnect the following:-

a)2 pin plug on NTClead

b)all wires from electrode assembly

c)all wires from spark generator

d)both wires from the overheat thermostat

e)the red and black wires connected together

4.Undo the two securing nuts and remove the spark generator and bracket.

5.Undo the combustion panel securing nuts and remove the special spring washers. Remove the complete fan & panel assembly from the boiler. Check the condition of the insulation piece.

6.Undo and remove the nuts and washers securing the fan to the gas/air inlet. NOTE THE POSITION OF THE RESTRICTOR PLATE !

7.Remove the securing screws and transfer the fan inlet to the new fan. Use a new sealing gasket if necessary.

8.Replace in reverse order. ENSURE THAT THE RESTRICTOR PLATE IS CORRECTLY FITTED ! THE SLOT MUST BE TO THE REAR. Check the condition of the sealing gaskets between the fan and gas/air inlet and the combustion panel and heat exchanger and replace if necessary.

PCBControl Box removed for clarity

Burner

Spark Generator

Plug

 

Gas Feed

Fig. 50

Pipe

Injector

 

30© Baxi Heating UK Ltd 2009

10.6Burner (Fig. 50)

1.Proceed as described in points 1. to 5. above.

2.Undo the screws securing the burner to the combustion panel. Remove the burner.

3.Replace in reverse order of dismantling, using the screws previously removed. Examine the sealing gasket and replace if necessary.

10.7Injector (Fig. 50)

1.Remove the gas feed pipe and washers, and extract the injector from the gas/air inlet manifold.

2.Replace in reverse order of dismantling. Examine the sealing washers and replace if necessary.

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Image 30
Baxi Potterton BBU 15 HE manual Fan Fig, Burner Fig, Spark Generator Plug Electrode Fan Injector
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BBU 15 HE specifications

The Baxi Potterton BBU 15 HE is a high-efficiency boiler designed to offer exceptional performance for both heating and hot water needs in residential settings. Known for its robust build quality and user-friendly features, this model is particularly favored for its versatility and reliability in various home environments.

One of the standout features of the Baxi Potterton BBU 15 HE is its compact size, making it suitable for installation in smaller spaces. Despite its small footprint, it delivers impressive outputs, making it ideal for homes with moderate heating demands. The boiler’s high efficiency rating ensures reduced energy consumption, leading to lower utility bills and a smaller carbon footprint.

Equipped with a powerful heat exchanger, the BBU 15 HE maximizes heat transfer, ensuring that households receive optimum warmth and hot water. With an output capacity of 15 kW, it can effectively heat a variety of living spaces while providing hot water on demand, making it a practical choice for families.

The boiler incorporates a number of advanced technologies that enhance its performance. One such feature is the built-in frost protection, which helps prevent the system from freezing during colder months. Additionally, the BBU 15 HE is designed for easy maintenance, featuring a simple access point for servicing, which can prolong the boiler’s lifespan and improve overall efficiency.

Safety is a top priority in any boiler installation, and the Baxi Potterton BBU 15 HE includes multiple safety features such as a pre-set temperature limit that prevents overheating and a pressure relief valve to manage excessive pressure within the system. These elements contribute to a safer home environment, providing peace of mind for homeowners.

Furthermore, the boiler is designed to operate quietly, minimizing disruptions in the home when heating systems are active. This is an important factor for many households where comfort is a priority.

In summary, the Baxi Potterton BBU 15 HE is a compact, efficient, and reliable boiler that provides an optimal solution for home heating and hot water needs. Its advanced features, safety systems, and user-friendly design make it a popular choice among homeowners, ensuring a cozy and comfortable living environment. Whether for a new installation or a replacement unit, this boiler stands out as a highly effective option in the market.
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