3 About the unit
Installation manual
6
D2CND024A1/4AA + D2TND012~024A4AA
Wall-mounted condensing boiler
3P469346-3E – 2017.07
3.3
Components
Components of models D2CND024A1AA and D2CND024A4AA
a
b
c
d
e
f
g
h
i
j
k
aa
l
m
n
o
p
q
r
s
t
u
v
w
x
y
z
a
Automatic air vent (heat exchanger)
b
Flow temperature sensor
c
Expansion vessel (8 litres)
d
Gas valve
e
Heat exchanger
f
3-way valve stepper motor
g
Domestic hot water temperature sensor
h
Plate heat exchanger
i
Safety valve (3 bar)
j
Condensate trap
k
Ignition transformer
l
Flue gas temperature sensor
m
Burnerhood
n
Ignition electrode
o
Ionisation electrode
p
High limit thermostat
q
Fan
r
Return temperature sensor
s
Silencer
t
Automatic air vent (pump)
u
Water pressure sensor
v
By-pass
w
Boiler pump
x
Domestic hot water flow sensor
y
Domestic hot water flow limiter
z
Internal filling valve (included in model D2CND024A1AA
and not included in model D2CND024A4AA)
aa
Flue gas adapter
Components of models D2TND012A4AA, D2TND018A4AA and
D2TND024A4AA
a
b
c
d
e
f
g
h
i
j
k
u
l
m
n
o
p
q
r
s
t
a
Automatic air vent (heat exchanger)
b
Flow temperature sensor
c
Expansion vessel (8 litres)
d
Gas valve
e
Heat exchanger
f
3-way valve stepper motor
g
Safety valve (3 bar)
h
Condensate trap
i
Flue gas temperature sensor
j
Burnerhood
k
Ignition electrode
l
Ionisation electrode
m
High limit thermostat
n
Fan
o
Return temperature sensor
p
Silencer
q
Automatic air vent (pump)
r
Water pressure sensor
s
By-pass
t
Boiler pump
u
Flue gas adapter
Summary of Contents for D2TND012A4AA
Page 27: ......