Boiler breakdowns in South East London, Boiler Repairs in South East London, Boiler Servicing in South East London,. Boiler Replacement in South East London, Central Heating Installation in South East London, Landlord Certificates in South East London, Powerflushing in South East London. 

CENTRAL HEATING AND GAS ENGINEERS SOUTH EAST LONDON

Abacus Gas Central Heating and Gas Engineers - Established 1991
Abacus Gas, Central Heating and Gas Engineers covering South East London
 0800 393 026

Abacus Gas for all your Central Heating and Hot Water Installation, Repairs and Servicing

Condensing Boilers  |  Combination Boilers  |  Conventional Boilers  |  Pressurised Systems  
  Vented & Unvented Hot Water Systems  |  Power Flushing  |  Landlord Safety Inspections 


 

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PRESSURISED SYSTEM

There are various systems which can be described as pressurised:

Combination Boiler Combination Boiler Information

Pressurised Central Heating and Unvented Stored Hot Water.  
With a pressurised central heating system there is no cold water storage tank or central heating header tank.  Water is heated in a special cylinder at mains pressure.  Because water is pre-heated, it can be delivered to more than one tap at a time as with a conventional cylinder.  However, as the system is at mains pressure, flow rates will normally be much improved (depending on local mains water pressure).  This system is particularly advantageous where there is a high demand for hot water such as properties with more than one bathroom or where improved shower performance is required without the use of a pump.  Also advantageous where no head is available for cold water storage tanks i.e. loft conversions or flats.

Some older systems can be upgraded using the existing boiler subject to building regulations.  However, it is generally advantageous to use a purpose-designed pressurised system boiler which includes, within its case, all the components required for primary pressurisation.

Systems are available giving pressurised stored hot water and conventional central heating (no cold water storage tank but retaining central heating header tank) or pressurised central heating and conventional stored hot water (retains cold water storage tank but no central heating header tank) or combinations thereof.  Please telephone for further information/advice.

Improvements
Since April 2002, changes in the Building Regulations effects how your installer replaces your boiler/cylinder or makes changes to your heating controls.  
Building Regulations Information 

Fitting a room thermostat, thermostatic radiator valves or a time switch or any combination of these will give improved control over comfort conditions and better economy by switching the boiler off whenever it is not required.

From time to time your central heating system may require bleeding or re-pressurising. Information on Radiator Bleeding and Repressurising

All installations are carried out in accordance with relevant regulations and good practice


System Boiler with 
Unvented Hot Water Cylinder

Unvented Hot Water Storage Cylinder
Click for larger picture

 

Low Pressure
Vented Hot Water System


Vented Hot Water System     
Click for larger picture

 


CLICK HERE TO READ OUR REVIEWS


Pauline W - Oct 09
Used this company for both work and home........

Simon S. - Sep 09
Your dream tradesman- 

Douglas D - .Jul 09
What a fantastic company........... 

Michael M. -  Nov 08
I was extremely impressed by Abacus Gas........


Abacus Gas are accredited Vaillant boiler installers and are able to offer a 

5 year warranty

  (instead of the usual 2 years) on all Vaillant boiler installations.


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