5.2
Use of the control panel
5.2.1
Using the control panel
To increase or decrease the boiler temperature:
1. Turn the control knob with the symbol over it clockwise to in
crease the boiler set temperature. The set temperature will be
shown on the display screen.
2. Turn the control knob with the symbol over it anticlockwise to de
crease the boiler temperature. The temperature will be shown on the
display screen.
To reset the boiler:
1. Press the
Reset
button for approximately 1 second, holding the button
for more than 2 seconds the boiler will not reset. (see List of error co
des, page 21.)
5.3
Shutdown
Isolate the mains power supply at the fused spur unit.
Isolate the gas supply at the boiler valve.
Protect the boiler from frost.
Important
The boiler is not protected against frost once it has been shut
down.
Important
If it is anticipated that the boiler will not be used for a long period
or the property is to be unoccupied, it is advised to drain the sys
tem if the electricity and gas supplies are to be turned off. Your in
staller will be able to offer advice.
5.4
Frost protection
Where possible, draining the system should be avoided. If the system is to
be unused during winter months several precautions must be taken:
Any parts of the system that are in unheated areas of the dwelling
should be fitted with a device such as a pipe thermostat or frost thermo
stat.
Power must remain supplied to the boiler and controls.
Gas must remain supplied to the boiler.
The boiler pump will operate if the system temperature drops below 7°C. If
the temperature falls to 4°C the burner will ignite and remain lit until the
temperature reaches 10°C. At this temperature the burner will extinguish
but the pump will continue to operate for 15 minutes. This feature will pro
tect the boiler and to some extent adjacent parts of the system but addi
tional devices must be incorporated to guarantee frost protection.
Fig.8
Using the control panel
R
Reset
bar
0
1
2
3
4
PN-0000372
Min
M
a
x
R
5 Operation
16
7678872 - Draft A - 22052017
