Protherm 100 User Instructions - page 17
17
Setting the central heating output
The central heating output must be set in accordance with the system requirements. To adjust the burner
pressure, proceed as follows, referring to the tables listed in
‘Technical Data’
:
Gain access to the PCB as follows:
•
Unclip the two plastic clips securing the lower control
panel to the boiler side panels and hinge down.
•
Unscrew and remove screws securing plastic PCB
cover to rear of lower control panel and remove cover.
•
Set the ‘summer/winter’ switch to the ‘winter’
posi-
tion
•
Light the burner and check the gas pressure at pres-
sure test point ‘2’, see diagram 13
•
Adjust the pressure using potentiometer TR1 on the
PCB, see diagram 14.
Note:
Do not adjust any of the other potentiometers.
•
Refit PCB cover.
Safety devices
Air flow rate safety device
If an obstruction, even partial, of the flue occurs, the built in safety system of the boiler will turn the boiler OFF. The
boiler will be ready to operate when the fault has been cleared.
In case of power supply failure
The boiler no longer operates. As soon as power is restored, the boiler will be automatically restarted. If the boiler
does not restart, the overheat device may need resetting.
Overheat safety
In the event of overheating, the overheat safety device causes safety shutdown of the boiler. The digital display will
show error code F1. To reset, press the reset button on the safety device, (a), see diagram 23.
Important notice
A central heating system can-
not operate satisfactorily un-
less it is properly filled with
water and unless the air ini-
tially contained in the pipe-
work system has been prop-
erly bled off. If these condi-
tions are not satisfied, air
noise will occur within the
system and the boiler may fail
to operate.
To reset the boiler (other than for overheating) use the reset button on the fascia, see diagram 15.
The
Protherm 100 e
boiler has a built-in frost protection device that protects the boiler during freezing conditions.
Should the temperature within the central heating circuit of the boiler fall below 10 °C, the pump will switch on
providing the electrical supply has been left connected. If the temperature falls below 8 °C, then the burner will
operate until the water temperature increases to 25 °C. Should the electrical supply have been disconnected and
the boiler/system has frozen, the boiler will not start up until the boiler/system has been cleared.
Diagram 15
Summer/winter
switch
RESET
switch
On/off
switch
Diagram 14