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Date: 21/7/2022
Version Number: 2022 Issue no.3
Page
8
4.Installation Requirements
4.1 Hearths and Recesses
The stove should be installed on a surface with adequate load bearing capacity.
If the existing construction does not meet this prerequisite, suitable measures (e.g., load distributing
plate) should be taken to achieve it. Please pay particular attention when examining existing building
work for suitability to meet the following requirements.
When installing a stove, hearths should have a sufficiently flat surface to allow a firm seating surface
for the stove body to be positioned during its installation. Stonework, uneven bricks, loose tiles
etc., may need further work to ensure that this can be achieved.
The stove should be installed on a non-combustible surface not less than 150mm thick (conforming
to Building Regulations unless otherwise specified) of suitable load bearing capacity and heat
resistance. Allowances should be made for the expansion and contraction of any materials which are
fitted up to and near the appliance.
If required, the dimensions of any constructional hearth for Lowry should project at least 600 mm
forward of the front of the appliance and 500 mm at the sides. For Lowry 5X should project at least
600 mm forward at the sides. For Lowry 5XL should be project at least 800mm forward of the front
of the appliance and 400 mm at the sides. The surface of the hearth should be free of combustible
materials.
In most buildings with solid concrete or stone floors, the requirement will be met by the floor
itself, but mark the hearth to ensure floor coverings are kept away or use different levels to mark the
hearth perimeter.
Please be aware that hot air can cause staining above the fire in a similar fashion to walls above
radiators.
To help prevent this and cracking we recommend that any plaster above the fire should be fitted with
reinforcing expanding mesh for at least 220mm above, and the full width of the fire. You should also
use a suitably heat resistant plaster which should be allowed sufficient time to fully dry before using
the stove or cracking is likely to occur.
4.2 Combustible Materials
Please view the product sheet or data plate which accompanied your stove for specific minimum
distances to combustible measurements.
Ideally, adjacent walls should be of suitable non-combustible construction, preferably brickwork.
In large fireplaces take care that any supporting beam is protected by a 13mm sheet of heat resistant
fire board spaced 12mm off the surface with strips of non-combustible material. Make sure that there
is a gap between an un-insulated flue system and any combustible material. This gap must be at least
3X the outside diameter of the flue pipe, or 1. 5X the flue diameter to non-combustible surfaces.
Please consult the flue manufacturers specification for insulated flues.