55
10.2
Electrical diagram RKOMB22AAV1H, RKOMB28AAV1H & RKOMB33AAV1H
A
Earth connection exchanger
F
Fuse (3.15 A T)
P1
CH pump
S3
DHW sensor
B
Ignition hood
G
Gas block + ignition module
R
Resistance
S5
Flow sensor
C Boiler controller
I
Ignition/ionization pin
S1
Leaving water sensor
S7
CH water pressure sensor
E
Earth connections
M
Mains electricity supply
S2
Return sensor
V
Fan
Connector X4
24V=
5 -
CH pump (5= PWM signal (red), E=earth)
6-7
On/off room thermostat
(0.1A-24Vdc)
and/or frost thermostat
8-9
Outdoor sensor
(12 kOhm / 25°C)
11-12
OpenTherm room thermostat
(6-7 should be open)
Connector X2
230V
~
2-4
Mains supply 230 V (2 = L (brown), 4 = N (blue))
7-8
CH pump
(8 = L (brown), 7 = N (blue)
3-5-6
Shut-off valve underfloor heating
(3 = L (brown), 5 = Switch (black), 6 = N (blue)
(e.g. EK3WV1AA)
Connector X5
Computer interface
10.3
NTC resistances
NTC 12 kOhm
T [°C]
R [ohm]
T [°C]
R [ohm]
T [°C]
R [ohm]
T [°C]
R [ohm]
-15
76020
15
18300
45
5522
75
1994
-10
58880
20
14770
50
4609
80
1717
-5
45950
25
12000
55
3863
85
1467
0
36130
30
9805
60
3253
90
1266
5
28600
35
8055
65
2752
95
1096
10
22800
40
6653
70
2337
100
952
