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CXLN Storage heater section - Principle of operation
The storage heater section of the CXLN heater consists of a
core of high density heat storage bricks surrounded by a carefully
designed insulating case. During the night time off-peak period
elements within the brick core heat up the bricks to a temperature
level determined by the setting you select using the input control
knob.
In the morning, when the core is at its hottest, the amount of heat
being transmitted through the insulation and emitted as radiant heat is
at its greatest and the heater feels hot over most of its upper outer
surfaces. Diagram 2.
As the day progresses, heat is transmitted from the heater to the
room and the outer surface of the heater becomes less hot and the
amount of heat released in this way becomes less.
If the amount of emitted heat becomes insufficient the output of the
heater and thus the room temperature may be increased by means of
the Output Control. This control operates a damper flap within the
heater which, when the output control knob is at minimum, covers
vertical airways which pass directly through the centre of the core of
the heater. Even when the outer surfaces of the heater are noticeably
less hot, the core of bricks can still be at a relatively high temperature.
Opening the damper flap by moving the output control away from
minimum allows the room air to circulate through this hot core and
release more heat to the room by convection. Diagram 3.
Input Control
The setting of this control determines the amount of charge taken in by the heater, which in turn determines the temperature of the
heater's storage core. The higher the charge taken the higher the core temperature.
In colder weather the heater should be set to take a high charge, the control being set at maximum ensures the heater accepts a
full charge.
In the Autumn and Spring a lower setting of the input control knob should be sufficient, the actual setting required being influenced
by the prevailing weather conditions, the room size and insulation levels. The most suitable settings will be found by experience.
Output Control
Depending upon the amount of charge accepted by the heater, the OUTPUT control allows the release of additional heat by means
of a damper which can be opened to allow a greater air flow through the heater core, and therefore additional circulation of heat. By
altering the setting of the Output control knob the damper may be opened and closed manually, or it may be made to open
automatically.
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