Pressure

Gauge

Air Vent

4.0

 

System Details

 

 

 

 

 

 

Sealed Systems (Figs. 6, 7 & 8)

4.7

 

1. Installation. The installation must comply with the

requirements of BS 6798 and BS EN 12828. The British

Gas publication “British Gas Specification for Domestic

Wet Central Heating Systems” should also be

consulted.

 

 

2. Pressure Relief Valve. A non-adjustable spring loaded

Safety

Valve

Expansion

Vessel

Boiler

Pump

Flow

Return

Indirect

Cylinder

Radiator

Circuit

Filling

Point

pressure relief valve, preset to operate at 3 bar

(45 lbf/in2) shall be used. It must comply with BS 6759:1

and include a manual testing device. It shall be

positioned in the flow pipe either horizontally or

vertically upwards and close to the boiler. No shut off

valves are to be placed between the boiler and the

safety valve. The valve should be installed with a

discharge pipe which permits the safe discharge of

steam and hot water such that no hazard to persons or

damage to electrical components is caused.

3. Pressure Gauge. A pressure gauge incorporating a fill

pressure indicator, covering the range 0-4 bar (60

lbf/in2) shall be fitted to the system. It should be

connected to the system, preferably at the same point

Fully Pumped Sealed System

Fig. 6

as the expansion vessel. Its location should be visible

from the filling point.

© Baxi Heating UK Ltd 2009

13

Page 13
Image 13
Baxi Potterton BBU 15 HE manual Sealed Systems Figs , 7

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.

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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.