Stove industry HAMER HD5, Installation And Operating Instructions Manual, Page: 7 / 18

Connection To The Chimney
This appliance is not suitable for use in a shared flue.
Using a liner a Ø125mm flexible flue liner is permitted be used on the HD5 range of stoves providing that they only burn smokeless
fuel or seasoned wood logs.
An existing fireplace opening can be bricked up or sealed with a register plate. A short length of flue pipe of a minimum Ø125mm
internal diameter may then be used to connect the stove to the chimney. A maximum of 150mm horizontal flue pipe can be used.
This flue pipe should conform to Building Regulations. Ensure that the pipe end is no closer than 76mm to the side or rear chimney
walls.
There must be a smooth streamlined entry into the flue way and there must be no voids, particularly those that might accumulate
soot and debris leading to blockage and/or chimney fire risk. It is essential that all connections between the stove and chimney-flue
are sealed and made airtight with sealing rope, screws, clamping rings and/or fire cement or suitable heat resisting cement/sealant
where required.
Both the chimney and flue pipe must be accessible for cleaning and if ANY parts of the chimney cannot be reached through the
stove (with baffle removed), a soot door must be fitted in a suitable position to enable this to be done.
If you have any doubts about the suitability of your chimney, consult your local Dealer/Stockist or Installation Engineer. Both the
chimney and flue pipe must be accessible for cleaning and if ANY part of the chimney cannot be reached through the stove (with
baffle removed), a soot door must be fitted in a suitable position.
Air Supply
Document J of the Building Regulations states that purpose provided ventilation is not required in England and Wales unless the
appliance nominal rated output is greater than 5kW. Over 5kW 5.5 cm2 of ventilation (550mm2) is required for every kW output
above 5. For example 6.5 kW requires 8.25 cm2 and 8 kW needs 16.5cm2. In any case, if difficulty in starting the fire or any
excessive fuming is experienced, ventilation must be put in place as required to eliminate these flue problems. If a flue draught
stabiliser is fitted then extra ventilation is required. See Document J of the Building Regulations for detailed guidance especially in
new build properties.
Clearances
Safety distances to combustible materials
Side:
750mm
Rear: 750mm
In addition, it is strongly recommended that any furniture or other combustible materials are kept at least
900mm clear from the
front of the stove.
Distances to non-combustible materials
A minimum of 80mm clearance should be left at the back and sides of the stove to allow free air movement and for heat from the
stove to enter the room, and there should be a minimum clearance around the 5" flue pipe of 225mm.
In exceptionable circumstances where only non-combustible walls surround the stove with a minimum thickness of 200mm the
clearance between the rear and sides of the stove may be reduced to 50mm but this may effect efficiency levels which are based
on the clearance figures shown in figure and reference should be made to building regulations and any rules in force at the time of
installation
Hearth
The HD5 range of stoves do not require a constructional hearth beneath them as they do not cause the floor temperature to exceed
100 degrees C. Hearths must be level and square to any back panel or the wall. In any case a non-combustible superimposed
hearth extending fully underneath the stove and forming an apron of at least 225mm at the front of the stove and 150mm on either
side must be provided. The superimposed hearth must not be less than 12mm thick and must have a clearly defined edge (change
of level) to discourage placing of any combustible materials on or partially over it.
The appliance shall be installed on a floor with adequate load-bearing capacity. If the existing construction does not meet this
requirement, suitable measures (e.g. load distributing plate) should be provided to achieve it.
A full copy of Document J can be found here : http://www.planningportal.gov.uk/uploads/br/BR_PDF_ADJ_2010.pdf
Commissioning and handover
Please check that all components are correctly assembled and working correctly. Ensure the Air Controls are working correctly.
Upon completion of the installation, allow a suitable period of time for any fire cement and mortar to dry out. A small fire may then
be lit and checked to ensure the smoke and fumes are taken from the stove up the chimney and emitted safely to atmosphere.
Advise the customer not to run the stove at full output for at 3
– 4 days. Explain that the stoves can provide much more or less than
their rated heat outputs depending upon how they are burnt and the fuels and fuel loads used.