Page 2
USER INSTRUCTIONS
Dual Thermostat
The radiator temperature is regulated via the
boiler control thermostat. The thermostat is user
adjustable from 55°C at its minimum setting (dial
‘0’) to 85°C at its maximum setting (dial ‘5’). In
order to provide an additional level of safety there
is a high limit thermostat which has a cut off point
of 0°C; this is factory set and is not adjustable.
If thermostat trips it needs to be reset manually.
High Limit Thermostat Reset
If the high level thermostat trip has operated,
remove the reset cover by using a coin or
screwdriver (turning anti clockwise) and press the
small red button now exposed. Do not press the
reset button while the boiler is still hot as this will
cause damage to the thermostat.
Burner Lockout
When the pressure jet oil fired burner stops after
failing to fire the red reset button will be illuminated.
This indicates that there is a fault or there is no
fuel getting to the burner. The house holder should
only reset the burner twice in succession. If the
burner continues to lockout contact Warmflow or
your service engineer.
System Pressure – System & Combi Boilers
When the boiler is connected to a sealed system
the system pressure should be periodically
checked. The minimum pressure, as indicated by
the black needle, is 0.5 bar when the boiler is cold
and 2.5 bar when the boiler is at normal operating
temperature. If the pressure is outside this range
contact Warmflow or your installer.
Burner Lock Out Reset
System Pressure
Page 2
Page 67
USER INSTRUCTIONS
Dual Thermostat
The radiator temperature is regulated via the
boiler control thermostat. The thermostat is user
adjustable from 55°C at its minimum setting (dial
‘0’) to 85°C at its maximum setting (dial ‘5’). In
order to provide an additional level of safety there
is a high limit thermostat which has a cut off point
of 110°C; this is factory set and is not adjustable.
If thermostat trips it needs to be reset manually.
High Limit Thermostat Reset
If the high level thermostat trip has operated,
remove the reset cover by using a coin or
screwdriver (turning anti clockwise) and press the
small red button now exposed. Do not press the
reset button while the boiler is still hot as this will
cause damage to the thermostat.
Burner Lockout
When the pressure jet oil fired burner stops after
failing to fire the red reset button will be illuminated.
This indicates that there is a fault or there is no
fuel getting to the burner. The house holder should
only reset the burner twice in succession. If the
burner continues to lockout contact Warmflow or
your service engineer.
System Pressure – System & Combi Boilers
When the boiler is connected to a sealed system
the system pressure should be periodically
checked. The minimum pressure, as indicated by
the black needle, is 0.5 bar when the boiler is cold
and 2.5 bar when the boiler is at normal operating
temperature. If the pressure is outside this range
contact Warmflow or your installer.
Control Thermostat
High
Limit
Reset
Reset
Burner Lock Out Reset
System Pressure
Notes
Page 2
Page 67
USER INSTRUCTIONS
Dual Thermostat
The radiator temperature is regulated via the
boiler control thermostat. The thermostat is user
adjustable from 55°C at its minimum setting (dial
‘0’) to 85°C at its maximum setting (dial ‘5’). In
order to provide an additional level of safety there
is a high limit thermostat which has a cut off point
of 110°C; this is factory set and is not adjustable.
If thermostat trips it needs to be reset manually.
High Limit Thermostat Reset
If the high level thermostat trip has operated,
remove the reset cover by using a coin or
screwdriver (turning anti clockwise) and press the
small red button now exposed. Do not press the
reset button while the boiler is still hot as this will
cause damage to the thermostat.
Burner Lockout
When the pressure jet oil fired burner stops after
failing to fire the red reset button will be illuminated.
This indicates that there is a fault or there is no
fuel getting to the burner. The house holder should
only reset the burner twice in succession. If the
burner continues to lockout contact Warmflow or
your service engineer.
System Pressure – System & Combi Boilers
When the boiler is connected to a sealed system
the system pressure should be periodically
checked. The minimum pressure, as indicated by
the black needle, is 0.5 bar when the boiler is cold
and 2.5 bar when the boiler is at normal operating
temperature. If the pressure is outside this range
contact Warmflow or your installer.
Control Thermostat
High
Limit
Reset
Reset
Burner Lock Out Reset
System Pressure
Notes
Summary of Contents for Utility U70HE
Page 51: ...Page 49 5 0 Flues 5 1 Installation of Flues...
Page 76: ...Page 74 Notes...
Page 77: ...Page 75 Notes...
Page 78: ...Page 76 Notes...
