3 Operation
Operation manual
3
D2C20ND0 D2C24ND035A5AA
Wall-mounted condensing boiler
3P469438-10H – 2018.05
In case your skin comes into contact with condensate, the contact
location should be washed with plenty of water. Condensate liquid
must never be used for purposes of cleaning, watering plants, or
drinking.
2.2
Smell of gas
DANGER
This is a gas unit. Gas leaks might lead to poisoning and
explosions.
If you smell gas:
▪ Do not use any electrical switches, including light switches.
▪ Do not use telephones in the affected area.
▪ Do not use naked flames, such as matches or lighters.
▪ Do not smoke.
▪ Turn off the main gas supply.
▪ Open windows and doors.
▪ Warn other people in the building.
▪ Get out of the building.
▪ Inform your gas supplier, service agent or other competent
person.
2.3
Modifications on the unit
DANGER
Malfunctions can lead to poisoning and explosions. Never
put the safety devices out of operation, nor tamper with
them so as to impair their function.
CAUTION
An inappropriate modification may cause damage. Never
tamper with the boiler or other parts of the system. Never
attempt to perform maintenance or repair yourself. Call a
qualified service agent.
CAUTION
Do not use sprays, solvents, chlorinated cleaning agents,
paint, and adhesives in the vicinity of the unit. These
substances can cause corrosion, even in the flue system.
DANGER
Do not damage or remove any seals on components. Only
qualified persons are allowed to alter sealed components.
Do not make any modifications on:
▪ Boiler
▪ Gas, water or power supply
▪ Flue system
2.4
Gas conversion
WARNING
Never attempt to do gas conversion yourself. Only qualified
persons can do gas conversion. Contact your service
agent.
This unit is able to be operated with both natural gas and LPG. The
preset gas type is indicated on the identification label of your unit. If
you desire to use your unit with the other fuel type, contact your
service agent.
2.5
For the user
CAUTION
Any misuse is forbidden. The manufacturer is not
responsible for any malfunctions and/or damage that may
occur due to misuse.
▪ Your unit is intended as a heater for central heating systems and
for domestic hot water generation. Any other use is considered as
"misuse".
▪ If you are not sure how to operate the unit, contact your service
agent.
▪ This appliance can be used by children aged from 8 years and
above and persons with reduced physical, sensory or mental
capabilities or lack of experience and knowledge if they have been
given supervision or instruction concerning use of the appliance in
a safe way and understand the hazards involved. Children shall
NOT play with the appliance. Cleaning and user maintenance
shall NOT be made by children without supervision.
CAUTION
Do not rinse the unit. This may cause electric shocks or
fire.
NOTICE
▪ Do not place any objects or equipment on top of the
unit.
▪ Do not sit, climb or stand on the unit.
3
Operation
3.1
User interface
a
e
f
g
c
b
d
a
Left dial
b
LCD screen
c
Right dial
d
Mode / Reset
e
Status indicator
f
Cancel / Back
g
Menu / Enter
3.1.1
Buttons and dials
The three buttons and two dials on the user interface have various
functions according to different situations, which are stated in the
table below:
