page no. 28 of 68
CP
x Range Users, Installation & Servicing Instructions Doc Ref M201 issue 2.9 Nov 2018.
Before installation, check that the local distribution
conditions, fuel specification, and adjustment of the
appliance (see data plate) are compatible.
IMPORTANT:
Copper Sulphide / ‘Black Dust’
In some areas of the UK, particularly
Northern Ireland, problems have been
experienced with copper sulphide (more commonly
referred to as ‘Black Dust’) forming on the inner
surfaces of copper gas supply pipework. This dust can
enter the gas stream and may lead to blockages of
valves, filters and injectors.
If this heater is being installed in an area where ‘Black
Dust’ is known to be a problem, and copper gas supply
pipework is used, it is recommended that a filter having a
stainless steel 50 micron mesh and suitable for Natural
Gas is fitted at the inlet to the appliance immediately
downstream of the main appliance isolation valve. The
end user should be advised that the filter will require
periodic cleaning or replacement at least once per year,
during the annual service, or more often if the problem is
severe.
If necessary consideration should be given to mounting
the heater on resilient pads, or equivalent, to minimize
transfer of noise and vibration to the structure of the
building.
Floor mounted heaters must be installed on a level
noncombustible surface.
Heaters mounted at high level must be supported on
a purpose designed platform or framework that is
suspended from vertical drop rods, chains or straps or
mounted on specifically designed cantilever brackets
from a non-combustible wall. The method of installation
support must be capable of adequately supporting the
weight of the unit and any ancillary equipment. Before
installing the heater the existing structure must be
inspected to ensure it is suitable. All supports should be
protected against the effects of rust or corrosion.
Whichever method of mounting the air heater is used
the following minimum clearances for installation and
servicing must be observed.
NOTE:
CPx 250 & CPx 300 heaters have louvred lower
panels on both sides. The minimum clearance
of 0.15m is increased to 0.5m.
NOTE: Smaller heaters are supplied with one
blank side panel and one louvred side panel. If
the heater is installed against a wall ensure
that the blank panel is facing the wall, interchanging the
two side panels if necessary.
Any combustible material adjacent to the air heater and
the flue system must be so placed or shielded as to ensure
that its temperature does not exceed 65 °C.
If the method of mounting allows for any movement of
the heater it is essential that all gas, duct, and electrical
connections to the heater are made with flexible
connections to maintain continuity of connection.
• A servicing valve and union must be fitted at the gas inlet
to the heater to facilitate servicing.
• The gas supply to the air heater must be completed in
solid pipe work and be adequately supported.
• Heaters suspended by drop rods, straps or chains must
have a flexible connection as the final link between the gas
supply pipe work and the heater. Sufficient slack must be
left in the connection to take account of normal movement
of the heater.
Warning:
When completing the final gas connection to
the heater do not place undue strain on the
gas pipe work of the heater.
Refer to the supplied burner installation instructions for
details regarding oil supply options.
If a remote room thermostat, or controller with an integral
sensor, is used it should be fitted at a point which will
be generally representative of the heated area as far as
temperature is concerned. Draughty areas, areas subjected
to direct heat e.g. from the sun, and areas where the air
movement is relatively stagnant e.g. in recesses, are all
positions to be avoided for siting the thermostat.
The thermostat should be mounted about 1.5m (5ft) from
floor level.
Any room thermostat, frost thermostat, time clock etc.
must be suitable for switching 230V, 5A and must be of
the 'snap action' type to minimise contact bounce.
For electrical connections of external controls
see section 2.5 or the accompanying wiring
diagram.
