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Technical Bulletin 086a: GDHA gas cooker product range modification (on a number of gas cookers that were manufactured and sold by GDHA) 

Developed with Glen Dimplex Home Appliances

Date issued: 8 December 2020

This article appears in full in the January 2021 edition of Registered Gas Engineer.

This Technical Bulletin provides guidance to Gas Safe registered businesses/engineers on a product modification required prior to the installation and subsequent commissioning of certain models of gas cookers marketed by Glen Dimplex Home Appliances.


This Technical Bulletin has been published to highlight a product modification prior to the installation and subsequent commissioning of certain models of gas cookers marketed by Glen Dimplex Home Appliances (GDHA).


Gas Safe Register has been advised of an important safety modification to the grill compartment on a number of gas cookers that are manufactured and sold by GDHA.

The appliance manufacturer’s instructions for these appliances require that the grill door should be open at all times while the grill is in operation. However, if the door is closed by the gas user, the grill combustion process can be affected due to vitiated air, causing higher-than-expected levels of carbon monoxide (CO) to be produced.


As stated above, the result of closing the grill door during the grilling process can cause higher-than-expected levels of CO to be produced. To ensure that there is an adequate supply of combustion air to the grill burner in the event that the grill door is inadvertently closed during the grilling process, a modification has been developed that involves removing the bottom section of the cavity door seal.

The modification instruction from GDHA provides the instructions to carry out the necessary appliance modification. The following appliances/models are affected:

  • 444440218 New World NW100GT
  • 444440221 Belling Country Range 100GT Charcoal
  • 444440222 Belling Country Range 100GT Silver
  • 444440462 New World NW100GT Silver
  • 444442980 Belling Country Range 100GT Black
  • 444442981 Belling Country Range 100GT Cream
  • 444442982 Belling Country Range 100GT Jalapeno
  • 444445036 New World Ellingwood 80G Svg
  • 444445037 New World Ellingwood 80G Green
  • 444445039 New World Ellingwood 100G Svs
  • 444445041 New World Ellingwood 100G Green
  • 444445410 Belling Country Range 100G Charcoal
  • 444445411 Belling Country Range 100G Silver
  • 444445739 New World Ellingwood 80G
  • 444445740 New World Ellingwood 100G Charcoal
  • 444447099 New World NW 100G Charcoal
  • 444447100 New World NW 100G Sat
  • 444445047 New World Ellingwood 110G Ca
  • 444445049 New World Ellingwood 110G Gr
  • 444445742 New World Ellingwood 110G Si
  • 444447104 NW 110G Sa
  • 44445040 New World Ellingwood 100LPG
  • 444445042 New World Ellingwood 100LPG Green
  • 444445656 New World Ellingwood T80G LP Ca
  • 444445048 New World Ellingwood 110G LPG Ca
  • 444445050 New World Ellingwood 110G LPG Gr
  • 444440979 Belling Country Classic 100G LPG Sil
  • 444446009 New Spirit 100TG LP Sta

Actions to take

If the Gas Safe registered engineer encounters any of the affected models, it is essential that the appliance is checked to ensure that it functions safely, and that the appliance meets the manufacturer’s specification, and any modification that may be required has been completed in accordance with the manufacturer’s instructions.

In the event that the appliance does not meet the manufacturer’s specification and it cannot be confirmed that the appliance is safe for continued use, the current Gas Industry Unsafe Situations Procedure (GIUSP) should be applied and contact made with GDHA for additional advice.

GDHA can be contacted on 0151 458 0034, or by e-mail to:

Note 1: For details of current gas safety legislation, building legislation and industry standards for the geographical areas covered by Gas Safe Register, see the Legislative, Normative & Informative Document List (LNIDL)(1) by logging into your online account at:

Note 2: For general information about the process behind the development of Gas Safe Register Technical Bulletins and the expectations for all stakeholders, see TB 1000(2) by logging into your online account at:


(1) LNIDL – Gas Safe Register Legislative, Normative & Informative Document List
(2) TB 1000 – An introduction to Gas Safe Register Technical Bulletins

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