Electrical Diagram; Ntc Resistances - Rotex GW-20 H42 Installationsanleitung

10.2

Electrical diagram

A Earth connection exchanger
B
Ignition hood
C Boiler controller
E
Earth connections
Connector X4
5 -
24V=
6-7
8-9
9-10
11-12
Connector X2
2-4
~
230V
3-6
7-8
3-5-6
Connector X5
10.3

NTC resistances

NTC 12k Ohm
T [°C] R [ohm] T [°C]
-15 76020 15
-10 58880 20
-5 45950 25
0 36130 30
5 28600 35
10 22800 40
F Fuse (3.15 A T)
G
Gas block + ignition module
I Ignition/ionization pin
M
Mains electricity supply
PWM control CH-pump. (5= PWM signal (red), E=earth)
On/off room thermostat
(0.1A-24Vdc)
Outdoor sensor
(12 kOhm / 25°C)
Tank sensor (remove through-connection)
OpenTherm room thermostat
(6-7 should be open)
Mains supply 230 V (2 = L (brown), 4 = N (blue))
Electricity supply for fan (230 V, for RHOB42AAV1 only))
CH pump
(8 = L (brown), 7 = N (blue))
Three-way valve for external tank
(e.g. EK3WV1AA)
Computer interface
R [ohm] T [°C] R [ohm]
18300 45 5522
14770 50 4609
12000 55 3863
9805 60 3253
8055 65 2752
6653 70 2337
P1 CH pump
V
Fan
S1 Leaving water sensor
S2
Return sensor
and/or frost thermostat
(3 = L (brown), 5 = Switch (black), 6 = N (blue))
T [°C] R [ohm]
75 1994
80 1717
85 1467
90 1266
95 1096
100 952
53