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LT 7602 Issue No2 (07/17)
480 HD INSTALLATION INSTRUCTIONS
Prior to installation ensure that the local distribution conditions (identification of the type of
gas and pressure) and adjustment of the appliance are compatible G20 @ 20 mbar.
The front of the fire act as a dress guard, conforming to BS 1945 (1971) and satisfies the
heating appliance regulations (1991). However, a guard conforming to BS6539 (1984) must
be used to protect young children, the elderly or infirm.
This appliance incorporates a safety device in form of an oxygen depletion system. It must
not be adjusted or put out of operation. This is a non – serviceable item and must be
exchanged as a complete assembly using only the original manufacturer’s part.
A suitable proprietary fire surround with a 150 degree C minimum rating is required.
Class One
That is a conventional brick or stone chimney as used for a solid fuel appliance with an
effective cross sectional dimension of 225 x 225mm or a lined flue with a minimum diameter
of 125mm. The chimney must have a minimum effective height of at least 3 metres. Any
permanent flue restriction or variable damper are to be removed or locked fully open. The
chimney should be swept prior to installation if it has previously been used with a gas
appliance or if it is a new installation.
The 480 HD is designed to be fitted into a class one flue with a fire place which will require a
50mm rebate. The other option is hole in the wall which can be plastered up to the edge of
the fire place frame or fitted with wall mounted noncombustible slips. The two methods will
require different size apertures.
Builder’s opening aperture size when fitted in conjunction with a 50mm rebated surround
Summary of Contents for 480HD
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