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17.2
Gas boiler
17.2.1
Components: Gas boiler
m
j
k
d
r
e
h
p
i
o
n
q
a
Space heating pump
b
Gas valve
c
Boiler control panel
d
Sensor S1 (in)
e
Sensor S2 (out)
f
Fan
g
Flow sensor
h
Space heating pressure sensor
i
Mains lead 230 V AC with earthed plug
j
Manual air bleed
k
Sight glass
l
Air supply cap (use ONLY when using twin pipe flue
system)
m
Flue pipe adapter (use ONLY in combination with the
accompanying elbow in flue sets)
n
Connection block/terminal strip X4
o
Condensate drain pan
p
Domestic Hot water sensor S3
q
Condensate S3
r
Heat exchanger
s
Operating panel and read-out
t
Ionisation/ignition electrode
u
Position of data plate
Bottom view
a
b
a
Space heating outlet
b
Instant domestic hot water outlet (not applicable for
Switzerland)
c
Gas inlet
d
Instant domestic hot water inlet (not applicable for
Switzerland)
EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1A – 2019.05
c
d
e
e
Space heating inlet
l
17.2.2
Wiring diagram: Gas boiler
t
1
4
j
1
3
f
1
6
8
c
1
5
b
g
a
1
5
1
7
6
8
7 3
u
8 4
a
Earth connection heat exchanger
c
b
Spark cover
s
c
Boiler controller
d
Earth lips boiler controller
e
Fuse (3.15 A T)
f
Gas valve and ignition unit
g
Ignition/ionisation pin
h
Main voltage
i
Fan
j
Current loop module
P1
Space heating pump
S1
Supply sensor
S2
Return sensor
S3
Domestic hot water sensor (not applicable for Switzerland)
S5
Flow sensor
S7
Space heating water pressure sensor
S8
Space heating leaving water thermistor
X1
Gas valve and ignition electrode
X2
Main power supply (2=L (BRN), 4=N (BLU))
X3
Power supply fan (230 V)
X4
Sensor connection
X5
Boiler communication cable
X7
Sensor connection
17 Technical data
h
i
S8
a
d
3,15 A T
Installer reference guide
b
g
f
99
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