4 Installation
Installation manual
8
D2C20ND0 D2C24ND035A5AA
Wall-mounted condensing boiler
3P469346-10J – 2018.05
Energy-related products (ErP) specifications
Symbol
Unit
D2C20ND028A5AA
D2C24ND035A5AA
Domestic hot water parameters
Declared load profile
—
—
XL
Daily electricity consumption
Q
elec
kWh
0.153
0.204
Annually electricity consumption
AEC
kWh
33
44
Water heating energy efficiency
η
wh
%
84
83
Water heating energy efficiency class
—
—
A
Daily fuel consumption
Q
fuel
kWh
23.25
30.26
Annual fuel consumption
AFC
GJ
18
23
(a)
High-temperature regime means 60°C return temperature at heater inlet and 80°C flow temperature at heater outlet.
(b)
Low temperature means for condensing boilers 30°C, for low-temperature boilers 37°C and for other heaters 50°C return temperature (at heater
inlet).
4
Installation
4.1
To open the unit
WARNING
Only qualified competent persons are allowed to open the
unit.
Certain actions explained in this document, such as gas conversion,
optional equipment connection, require that the front cover is
opened.
1
Loosen the screw that holds the right mounting clips (1).
2
Dismantle the two mounting clips that hold the front cover (2).
3
Remove the front cover forwards (3).
3
a
2
1
a
Front cover
4
Loosen the two screws of the control panel (4).
4
a
a
Control panel
5
Pull the control panel forwards (5).
5