Worcester Bosch Greenstar 25SI Natural Gas Combi Boiler ErP 25kW

 

Overview

 

Inclusive of all labour and Parts 

 

The all new Worcester Greenstar gas-fired Si Compact is the successor to the Greenstar Si combi boiler. Ideal for apartments and small to medium sized properties with one bathroom, it has a host of performance-enhancing features, including the revolutionary WB7 heat exchanger which enables the appliances to deliver DHW flow rates of 10.2 and 12.3 l/min despite their compact size. The new Greenstar Si Compact has been designed to make installation and commissioning easier and quicker, and comes supplied with a unique wall-mounting jig which enables the installer to quickly pre-plumb all seven pipe connections without the boiler being on the wall. A built in LCD display provides quick and easy operation status and fault diagnosis, providing greater clarity during maintenance and operation. The boiler comes packaged with a standard horizontal flue pipe for additional convenience and value.

 

  • 5 year guarantee, 6 when installed with Greenstar filter 550091 or 550101
  • Compact and lightweight
  • Fits in a standard kitchen cupboard
  • User-friendly displays for ease of use
  • Hot water can be adjusted to fine tune comfort
  • Wide choice of controls enables greater comfort and economy
  • Frost protection is included, reducing frost risk if installed in a garage or a loft
  • Simple boiler control knobs with clear temperature display
  • Low energy pump reduces electrical usage
  • Instantaneous hot water, always available

 

Technical 

 

ERP Efficiency 93%
ERP Rating A
Boiler Type Combi
Depth 280 mm
Height 690 mm
Width 390 mm
Maximum Horizontal Flue 100mm 6 m
Maximum Horizontal Flue 125mm 15 m
Maximum Vertical Flue 100mm 6 m
Maximum Vertical Flue 125mm 15 m
External or Internal Internal
DHW Output 25 kW
DHW Flow Rate at 35 Degree Rise 10.2 L/min
DHW Output Min and Max 7.03 - 25 kW
SEDBUK SAP 2009 Rating 89.80%
SEDBUK SAP 2005 Rating 90.50%
Heat Output 25 kW
Fuel Type Natural Gas
Includes Vertical Flue
Noise Level 52 dB
Nox Class 5
Solar Compatible N
Type Boiler Pack
Years Guaranteed 5
Registered with the Energy Savings Trust Y
Dimension 1 280
Dimension 2 390
Dimension 3 680
Made To Order N
Manufacturer Model No 7733600050
Brand Name Worcester Bosch
Range Description Greenstar Si Compact

Worcester Bosch Greenstar 25SI Natural Gas Combi Boiler ErP 25kW

£2,620.49Price

Existing Boiler

Disconnect the existing boiler and remove from site.

 

New Boiler

Supply and install new boiler in same location as existing

 

• Water treatment inhibitor

• Gas Safe and Building Control Certificate.

• Commissioning new boiler

• Copper Pipes and miscellaneous materials

• Filling loop

• Horizontal Flue.

• Removal of old boiler.

• Warranty on boiler (Manufacturers T&C's apply)

 

Condensate pipe

The condensate pipe will be connected into a soak-away or into the existing rain water/ fowl sewer drainage system

 

Room Stat

To meet the current building regulations, we will include in our estimate for installing the following modern controls

 

• Wireless room thermoset

 

A new balanced horizontal flue will be fitted from the boiler through the wall/roof and terminated externally.

 

Electrical works

Allowance has been made for wiring the controls on the boiler and to the controls mentioned above.

 

The mains supply to the boiler and controls will be taken from an adjacent point with all wiring hidden where possible, otherwise run on the surface of adjacent walls

 

No allowance has a been made for service cross bonding which may be required in the house. If this is not present our electrician will advise you.

 

Gas Service

The gas service will be taken from the existing 22mm supply and connected to the control valve on the boiler.

 

System Clean

To meet the current building regulations and conditions of the boilers warranty the heating system needs to be flushed out in accordance to BS7593.

 

This is because the heat exchangers in the new boiler are a lot smaller and can be prone to damage from sediment from radiators.

 

To ensure we remove as much sediment from the sytem as possible we ude a power flushing machine with the aid of Frenox cleaner.

 

This is a long process as each radiator is separately power flushed until the water running through the cleaner is clean.

 

To improve the process, we also agitate the sediment by quickly altering the direction of water flowing through the system and use a rubber mallets or mechanical agitator or magnetic roller on the radiators.

On completion of the works the use of the controls will be demonstrated and a handover pack will be issued with all relevant documentation require to sustained a health system

 

Testing and Commissioning

On completion of the works the use of the controls will be demonstrated and a handover pack will be issued with all relevant documentation require to sustained a health system

 

Handover

On completion of the works the use of the controls will be demonstrated and a handover pack will be issued with all relevant documentation require to sustained a health system

 

Protection

Throughout the duration of the works we will install full carpet/flooring protection to all works areas and access routes with the addition on dust sheets where appropriate.

 

All works areas will be left clean and tidy upon each day’s work and we will endeavour to keep dust levels to a minimum throughout

Guildford Plumbing and Heating Ltd © Copyright 2018

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