1.0 User Instructions
1.0.1 Boiler Control Thermostat
The boiler control thermostat is located on the front of the boiler facia panel and may
be adjusted from 52
°
C to 85
°
C. The recommended minimum thermostat setting is
65
°
C. Below this ‘cold water corrosion’ is likely to occur thus reducing the life of the
heat exchanger and is not covered by the manufacturer’s warranty. When using hot
water only it is recommended that the boiler control thermostat is switched to the off
position.
1.0.2 Mains Indicator
The green mains light will be lit when there is power to the control panel.
1.0.3 H/L Reset
The yellow H/L reset lamp will be lit when the high limit thermostat has tripped at its set
temperature of 110
°
C. This cuts off power to the burner and may indicate that there is
a fault in the heating system. The high limit thermostat has a manual reset button
located underneath the control panel in line with the control thermostat. Once the
temperature has fallen and the reset button has been pressed the boiler should restart.
If the high limit thermostat continues to trip contact your service engineer/technician.
1.0.4 Lock Out
The red lock out lamp will be lit when the burner has failed and can be reset by pressing
the illuminated red reset button on the burner control box. If there is power and the
thermostat is calling for heat and the burner has been reset it will go through its start
up cycle. If the burner again fails to fire this would indicate a burner fault or oil supply
problem (oil supply problems are not covered by manufacturers warranty).
1.0.5 Tank Control Thermostat
Located on the right hand side of the control panel the tank control thermostat controls
the temperature in the thermal store. The temperature is adjustable up to a maximum
of 80
°
C. A peg has been fitted to the rear of the knob to prevent the temperature being
set too high. To change the setting see page 31.
1.0.6 Tank Limit Thermostat
Located inside the control panel the tank limit thermostat is a thermal resetting device
controlling the on/off operation of the burner in hot water mode.
1.0.7 Hot Water and Central Heating On/Off Switch
Both hot water and central heating operations can be controlled via these switches.
However it should be noted that when both switches are in the ‘on’ position hot water
will have priority. In addition whenever a timer or programmer is connected to the
boiler one or more of these switches may be bypassed.
1.0.8 Pressure Gauge
The pressure gauge fitted to the front of the control panel measures system pressure.
The pressure should be set at 1 bar when the boiler is cold. As the boiler heats up, the
pressure will rise but should not exceed 3 bar.
1.0.9 Servicing
It is recommended that the boiler is serviced annually by an OFTEC registered engineer.
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