Central Heating System Pressure Gauge; Radiator Heating - Heatrae Sadia Electromax User Instructions

approximately 2 to 3 minutes whilst the
boiler undergoes a series of self diagnostic
tests. When the indicator glows steady
green it indicates that the boiler is heating.
When flashing RED at the same time as the
ALARM indicator it indicates that there has
been an over-heat fault on the system.
HEAT
This indicator will illuminate GREEN as
the boiler produces heat. It will show the
degree of heat being applied, it will only
be fully illuminated when the boiler is on
full power output. As the boiler adjusts
its power output to the heating demand
(modulating) the indicator will alter in
intensity.
ALARM
This indicator will flash RED when there is
a problem with the boiler. If flashing alone
there is a water flow problem, if flashing at
the same time as the DEMAND/OVERHEAT
indicator flashes RED there is an over-heat
problem.
The boiler will not operate until the
problem has been rectified and reset.
Contact your installer or Heatrae Sadia
Service Department if a fault ALARM
occurs.
Diagram 1 - Radiator Heating model pictured
Hot Water
Hot Water
"Boost On"
"On" Switch
Indicator
Hot Water
"Boost" Switch
4 User's Instructions
FLOW TEMP
This adjuster alters the boiler flow
temperature. It will normally have been
set to its optimum position during
installation. At its minimum position (- fully
anticlockwise) the boiler flow temperature is
set at 65 C; at its maximum position ( + fully
o
clockwise) the boiler flow temperature is set
at 80 C.
o
3.5 Central Heating System Pressure
Gauge
This will show the pressure in the heating
system. The minimum system pressure
should be 1.0 bar. If lower than this figure
the system may have a leak or have
discharged water from the safety valve due
to a fault. This will need to be investigated,
rectified and the system re-pressurised. The
maximum system pressure is 3 bar. If when
heating the indicator needle on the gauge
approaches the 3 bar mark this will indicate
that the system is over-pressurising. The
reason for this should be investigated and
rectified.
In normal operation the system pressure
should be between 1 bar and 2.5 bar. Any
under or over-pressurisation problem
should be investigated by a competent
installer or service engineer.
Central Heating system
Pressure Gauge
Boiler Status
Display
Central / Underfloor Heating
"On" Switch