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10

General information

Greenstar Danesmoor External 

ErP 

& External System 

ErP

 – 6 720 813 726 (2014/09)

6.3

General notes

To get the best from your boiler, read these instructions 
carefully.

Central heating system

During the first few hours of operation of the central heating 
system, check that all radiators are being heated at an even 
rate. If the top of a radiator is at a lower temperature than the 
bottom then it should be vented by releasing air through the 
venting screw at the top of the radiator. Ask your installer to 
show you how this is done. Repeated venting will reduce the 
quantity of water in the system and this must be replenished for 
safe and satisfactory operation of the boiler.

When excessive venting or water leaks are found in the system 
you must contact a service engineer to inspect the installation 
and rectify any fault.

Only use additives compatible with the boiler and system. Use 
of incompatible additives can cause damage and will invalidate 
the boiler guarantee.

Condensate drain

This is a condensing boiler and the terminal will, at times give 
out a plume of water vapour. This is quite normal.

The boiler also produces quantities of condensate which is 
discharged regularly via a pipe to drain.

This pipe must not be blocked or altered in any way.

Clearances, see section 6.2

Your installer will have provided adequate space around the 
boiler for safety and servicing access.

Do not restrict this space with the addition of cupboards, 
shelves etc. next to the boiler.

Room thermostat

A room temperature controller must be fitted to control the 
central heating. Refer to instructions supplied with the 
thermostat for information on siting and setting.

Thermostatic radiator valves

It is recommended that this type of valve is fitted to all but one 
of the radiators (or at least those in the sleeping 
accommodation). The remaining radiator, which must be 
where the room thermostat is located, should be un-controlled 
and must be left open.

Summary of Contents for External System ErP 12/18

Page 1: ...flue and room sealed flue Greenstar Danesmoor External Regular ErP and External System ErP 12 18 18 25 25 32 6720809792 00 1Wo For fully pumped open vent and sealed central heating systems and domestic hot water cylinders For use with Kerosene Class C2 only 6 720 813 726 2014 09 ...

Page 2: ...al quality and proven reliability The Greenstar range in particular is extremely energy efficient offeringyoueconomicalrunningcostsandvalueformoney Itis amongst the top energy rated appliances available Thereisalsothereassuranceofourpartsandlabourguarantee backed up by Worcester Total Cover an optional complete maintenance scheme to keep your appliance operating at peak condition and efficiency Co...

Page 3: ...nce A sequence of defined actions or steps carried out in order to complete a task Action Next action etc A reference to a related part in the document or to other related documents To refer the reader to a specific figure table section within the manual e g figure 1 A reference number to identify or refer to a part or item In a related figure items or parts identified by a sequential number List ...

Page 4: ...ivensupervision orinstruction concerningtheuseof the appliance in a safe way and understand the hazards involved Children shall not play with the appliance Cleaning and user maintenance shall not be made by children without supervision Intended use Thisappliancemustonlybeusedasaheatapplianceinasealed hot water heating system for domestic purposes Any misuse or unauthorised modifications to the app...

Page 5: ...System boiler only 6 Boiler mode indicator 7 Mode switch 8 Reset button Heating behind the front panel 9 Reset button Flue thermostat behind the front panel 10 Lockout indicator reset button located behind the front panel on the burner control box see reset button locations below flue reset boiler reset on service 3 1 4 6 5 6720809792 01 1Wo 2 6720809792 02 1Wo 1 2 7 ...

Page 6: ...ature The demand light will illuminate until the water reaches the set temperature Once the set temperature is reached the demand light extinguishes Turn the control anti clockwise to reduce the water temperature The minimum and maximum ranges of the temperature control positions are approximately 55 C to 81 C 3 2 3 Controlling the central heating Set the programmer timer to the correct time with ...

Page 7: ...r your boiler Maintenance tips Regularly check the oil level in the tank Do not obstruct the flue outlet or the air inlet Regularly check the system pressure gauge see chapter 4 Use in hard water areas In exceptionally hard water areas a device to prevent scale formation may be fitted Installation of a scale inhibitor assemblyshouldbeinaccordancewiththerequirementsofthe local water company An isol...

Page 8: ... Once the external filling loop has been located follow the instructions for re pressurising the system 1 Unscrew blanking cap 2 Attach the hose to the valves screw on hand tight 3 Turn the handle screwdriver slot through 90 to open the valves 4 The handle screwdriver slot will be in line with the valves Fig 1 External filling loop 5 When the pressure reaches between the 1 and 1 5 bar marks zone A...

Page 9: ...toensurethat condensate does not enter the primary heat exchanger The cabinet is not load bearing and only provides weather protection for the boiler inside There must be sufficient hard standing and access around the boiler for servicing WARNING Externalequipmentoperatingat230Volts must not be serviced or repaired during adverse weather conditions Do not use pressure washers or steam cleaners on ...

Page 10: ...he boiler and system Use ofincompatible additives can cause damage andwillinvalidate the boiler guarantee Condensate drain This is a condensing boiler and the terminal will at times give out a plume of water vapour This is quite normal The boiler also produces quantities of condensate which is discharged regularly via a pipe to drain This pipe must not be blocked or altered in any way Clearances s...

Page 11: ...s on room thermostat Air trapped in heating system System model Bleed radiators and re pressurise the heating system Low system water pressure System model Re pressurise the system refer to page 8 Desired room temperature is too high Thermostatic radiator valve s are set too high Turn down thermostatic radiator valves room thermostat Room thermostat is set too high Reduce central heating temperatu...

Page 12: ... not attempt further resets Contact your Service Engineer for advice 4 Boiler mode light ON lockout light OFF Boiler not on No heating hot water Press Reset Button B press Reset Button C both are below the fascia If the boiler remains off contact your Service Engineer for advice If this fault re occurs contact your Installer or Service Engineer 5 Both lights OFF Boiler not on No heating hot water ...

Page 13: ...g points before calling for a service engineer 1 Oil level in the tank 2 Power to the boiler 3 All control settings Technical support In the event of a appliance fault or breakdown please contact Worcester Bosch Group appointments team on 0330 123 9339 Your advisor will arrange for an engineer to call with the minimum of delay under normal circumstances this will be from 1 3 working days excluding...

Page 14: ...radiators have been carefully selected by your installer The temperature obtainable in any given room is dependent on all radiators being operated at the same time If you decide to turn off radiators in unused rooms spare bedrooms etc you may experienceslightlylowerroomtemperaturesinroomsadjacent to unheated rooms Heating economically The boiler is designed to provide a high level of comfort while...

Page 15: ...aulty material or manufacturer subject to Terms and Conditions To read the full Terms Conditions please visit us on line at www worcester bosch co uk guarantee The Guarantee Registration form is available on this same page and can be completed and submitted electronically Alternatively please telephone one of our Guarantee Registration advisors on 0330 123 2552 Your statutory rights are not affect...

Page 16: ...9 SPARES 0330 123 9779 LITERATURE 0330 123 9119 TRAINING 0330 123 0166 SALES 0330 123 9669 Worcester Bosch Group Cotswold Way Warndon Worcester WR4 9SW Tel 0330 123 9559 Worcester Bosch Group is a brand name of Bosch Thermotechnology Ltd worcester bosch co uk 6 720 813 726 2014 09 ...

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