Aga ODC & ODE - New product Introduction

Tuesday 1st February 2005

February sees the introduction of the new Diesel (gas-oil) 2 & 4 model cookers. Although they are primarily aimed at the European market where kerosene is not readily available, we expect that they may also prove of value in certain situations in the UK. It is an open-flued appliance only, suitable for conventional masonry or twin-walled flue systems.

The overall appearance of the cooker is identical to the normal oil-fired models, but with a dummy flue chamber and cover, since the flue pipe is taken direct into the manifold.

A compact, automatic, pressure-jet burner is used, housed in a standard 'ashpit' casting, which is converted into a combustion chamber by the fitting of insulation boards . This burner is extremely quiet in operation, with a pulse cycle of 4 minutes/on and 4 minutes/off, during the warm-up and recovery period. A nozzle pre-heater is fitted, whilst the start-up and operation is supervised by a conventional sequence control box and air pressure switch.

This means that unlike the conventional oil-fired Aga, these models demand a permanent electricity supply to operate.

An annual service should suffice, although an additional mid-term, flue-way/chamber clean may be required.

Site requirements.

A permanent 240 volt, 3 amp electrical supply is required, with a cable entry provided in the front, bottom corner of the side panels.

Three, rigid oil inlet pipes are supplied, so as to allow for connection from the left or right hand side as well as underneath a hot-cupboard. If a module is installed the oil supply must be connected to the R/H side. These are in 1/4"BSP, but an additional flared-fitting is supplied to adapt to 10mm copper.

As this is a pressure jet burner, there is no need to ensure a gravity oil feed, with an elevated storage tank. It is permissible to have the tank at ground level equal to the base of the Aga. Two-pipe systems or de-aeration (tiger loop) devices cannot be used.

A single fire-valve will normally be sufficient, located immediately outside of the property, and with its sensor mounted inside the burner housing.

Flue requirements are basically the same as for the normal vapourising models, requiring a lined flue or chimney system, but with a minimum diameter of 100mm.. One important additional requirement is for the flue to rise vertically by at least 300mm from the cooker flue chamber connection, before a bend is introduced. This means that the actual minimum height to a bend from the base of the Aga is 1151mm. A300mm length of BVE steel is supplied with the Aga which accommodates the integral silencer/baffle.

Diesel Aga

Above this 300mm length an access cover plate for cleaning will be required, either on the continuing vertical pipe or integral with a subsequent bend.

The burner requires a negative flue draught of approximately 1.0mm (.04") W.G when firing. If the draught is likely to exceed 3.7mm (.15") W.G, e.g. on a high chimney, a draught stabiliser will be required.

A permanent combustion air supply is required of 30sq cm.

 Source:- Aga Technical Review

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