Technical information

Installation and servicing instructions strictly reserved
for qualified gas installers
9
Operation of the Boiler
Sealed Water Systems
CAUTION: A sealed water system must be filled and pressurised by a competent person.
Only light the boiler when you are sure that the system and boiler have been filled and pressurised.
The pressure should read at least 0.7 bar, anything less than this figure could indicate a leak and
you MUST contact your installer or Saunier Duval’s own Customer Care Line using the telephone
number on page two of this booklet. Do not operate the boiler without water.
All Systems
Check that the electrical supply to the boiler is ON at the external isolator.
Set any remote controls as required.
User Controls
• Slide the mains reset switch to the ON position (I).
The control light will illuminate (green) indicating the boiler is lit, diagram 1.
• The temperature of the central heating water can be adjusted by turning the central heating water
temperature control knob
to desired setting between ‘Min’ and ‘Max’, diagram 1.
‘Max’
is approximately 82°C (180°F)
The digital display, diagram 1, shows the temperature of the appliance when the
appliance is running and in standby.
A fault is indicated by a RED flashing control light and flash fault code on digital display.
To Reset
• Slide the mains reset switch to 0. Wait for 5 seconds.
Slide mains reset switch to I.
If the fault persists contact your installer/service provider.
It should be noted that this is a fan flue appliance and fan operation may be heard.
To Turn the Boiler Off
• There is a mains reset switch on the right hand side of the controls fascia.
However, it is preferable to leave the electrical supply on whenever possible to permit
operation of the built-in frost protection.