0108X1DHGBEN
26
SECTION 14 USER INSTRUCTIONS
NOTE:
Keep a copy of this document near your air heater
WARNING: This appliance must be earthed.
14.1
Your Reznor EURO-X 1000 D air heater should have
been installed, commissioned and tested in
accordance with these the manufacturer's written
recommendations.
14.2
In the interest of safety and user satisfaction it is
important that this document is read and
understood. If in any doubt, consult your installer
or your local gas region supplier.
14.3
It is in your interest to ensure proper service and
maintenance is carried out on a regular basis by a
competent service undertaking. Reznor suggests at
least once every year.
14.4
In the event of difficulties in resolving any of these
matters, please do not hesitate to contact the
manufacturer or their official distributor.
14.5
About your air heater :
-
EURO-X 1000 D air heaters are state of the art
gas fired appliances and incorporate an
atmospheric burner which uses air for
combustion taken from the location in which
the air heater is installed. Products of
combustion are vented to outdoor atmosphere
via a permanently connected natural draught
flue. The flue system may incorporate a fan to
assist evacuation of the flue gasses.
-
The location of the air heater should be
maintained at normal ambient pressure.
Changes to the building after air heater
installation should have regard to the heating
installation, i.e. creation of draughts from
doors, windows. Other air handlers and
installation of air extraction equipment may
cause equipment may cause negative pressure
environments, which can, seriously affect the
operation of this type of air heater.
-
The space heating process using Reznor EURO-
X 1000 D air heaters is for air to be circulated
through the appliance whereby it gains heat
from a heat exchanger which is directly
discharged into the space to be heated.
Dependant upon the installation configuration
i.e. ducted return air the air may be recirculated
through the appliance thus an unobstructed
path for the return air must be maintained. This
is particularly important.
14.6
How the air heater works :
Gas is burned by an atmospheric burner which
fires into a multiplex combined combustion/heat
exchanger. The gas burner is controlled by a gas
valve which is switched via external controls i.e.
a room thermostat and time switch.
EURO-X 1000 D air heaters are available with a
choice of burner ignition systems;
Thermoelectric: Incorporate a permanent pilot
flame on a separate ignition burner which requires
manual lighting as described below, or;
Automatic Hot Surface Ignition System: Which
operates fully automatically at the dictates of the
external time and temperature controls.
Air heaters with a permanent flame ignition are
protected by a thermo-electric flame failure device.
Once the ignition burner has been lit and
established the heater operation is automatic
following the dictates of the external timing and/or
temperature controls.
Air heaters with hot surface ignition are protected
against flame failure by the igniter acting as a
sensor in the burner flame. When the external
controls signal a call for heat the igniter becomes
energised and after a short time it glows, when
sufficient heat to light the gas has been generated,
then the gas valve/s open and the burner lights.
Safety against overheating is assured by the
inclusion in the controls circuit of two thermal
overheat controls. There is an automatic recycle
control which protects against low air flows i.e.
clogged air ways, fan failure ! The second control
being a super overheat control which operates to
switch off the ignition burner in the event of gross
overheating for any reason. Two types of this
control are employed for this function to suit
availability, they can be identified by looking into
the controls compartment of the air heater and
comparing with figures 18 or 19. Manual
intervention to relight the ignition burner is
necessary for thermoelectric appliances, manual
intervention to reset the electronic burner control
either on the appliance or a remote control device
is necessary on those fitted with hot surface
ignition systems.
When the main burner fires and warms the heat
exchanger, the heat is sensed by a thermally
actuated fan control which switches on the fan
when the temperature has reached approximately
45
°
C. At the end of a heating cycle when the
burner is switched off, the air circulation fan will
continue to run on until the air heater has cooled
to a safe condition. Thereafter the fan will remain
off until the next cycle is initiated.
