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1. USER INSTRUCTIONS
Please note, to assist Trianco in improving customer service,
it is important that the guarantee/registration card is
returned.
INTRODUCTION
The Trianco Contractor H.E. External boiler has been
designed and constructed to give years of trouble-free
service and these instructions are provided to assist you in
obtaining the best performance with the least trouble and
cost.
The boiler will provide both domestic hot water and central
heating with the simplest of controls. It is supplied with an
adjustable boiler control thermostat, and a manual-reset high
limit thermostat, requiring little attention, other than the
setting of any system controls (such as a room thermostat or
programmer).
TO FIRE THE BOILER
Before firing the boiler, ensure that the system is full of
water, that there is a sufficient level of oil in the storage tank,
and that all isolation valves are fully open.
Check that the time-switch/programmer (if fitted) is on and
that the room thermostat is calling for heat.
Set the boiler thermostat (fig.1) to the desired temperature.
Switch on the electrical supply to the boiler. The burner
should fire after a few seconds.
Set the time-switch/programmer (if fitted) to the times and
programme required.
The boiler should now operate automatically, cutting in and
out according to the heat demand.
TO STOP THE BOILER
The boiler may be switched off by turning off the boiler
control thermostat (fig.1) fully anti-clockwise to the off
position, ‘O’.
If the boiler is to be off for a long period of time, it is
recommended that the mains supply to the appliance is
switched off, or the time-switch/programmer (if fitted) is set
to the OFF position.
BOILER CONTROL THERMOSTAT
The boiler control thermostat allows you to select the
temperature of the water leaving the boiler. It is calibrated
between High and Low, in five intermediate settings,
corresponding to a temperature range between 82°C (High)
and 55°C (Low). The thermostat is switched off when the knob
is turned fully anti-clockwise to position ‘O’.
Note: Where a cylinder thermostat or room thermostat is fitted,
ensure that the boiler thermostat is set above or equal to the
highest setting. satiatied
HIGH-LIMIT THERMOSTAT
The high-limit thermostat is factory-set and requires no
adjustment. Should the boiler thermostat malfunction and the
water temperature rise to 110°C, the limit thermostat will take
over and shut down the appliance.
The limit thermostat is located on the rear of the control box and
can be reset by pushing in the button. If the thermostat operates
frequently, consult your service engineer, as there may be a fault
in the system.
Note: the high-limit thermostat can only be reset when the water
temperature has dropped by at least 20°C.
BURNER LOCK-OUT
If the burner fails to light for any reason, the boiler will go into
lock-out mode, indicated by the illumination of the reset button on
the burner control box (fig. 2). To reset the burner, press this
button. If the burner returns to lock-out, wait for one minute
before pressing the button again.
If the burner still fails to light, follow the simple fault-finding guide
(page 5), before switching off the electrical supply to the boiler
and contacting your service engineer if the failure persists.
Important: do not attempt to reset the burner more than
twice – constant attempts to do so may cause permanent
damage to components within the burner.
FIG. 2
FIG. 1
LIGHT &
RESET BUTTON
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