Vaillant 837 E - Page 51

Supplied By www.heating spares.co Tel. 0161 620 6677
Diagrams 11
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R1 51
Wiring diagram: thermoCOMPACT 615/2 E, 620/2 E, 624/2 E, 628/2 E, 637 E
Fig. 11.4: Wiring diagram VU
Switchgear cabinet
U100
X3
T 2
= F1
T 1,25 = F3
X2
X2
X1
24
23
1
12
13
14
15
16
17
18
19
20
21
22
2
3
4
5
6
7
8
9
10
11
X2
Pressure sensor
NTC earth
Ionisation electrode
Coding resistor
NTC flow
NTC return
Lifting magnet
24
23
1
12
13
14
15
16
17
18
19
20
21
22
2
3
4
5
6
7
8
9
10
11
Fan unit
Ignition electrodes
Gas valveAir pressure switch
Ionisation electrode
Pump
NTC flow
NTC return
X8X4 (VUV)
X12
X14 X13
79 L 48N35
X7 Accessories
12
EV1
EV2
34
4
3
2
1
X20
Bridge
(637 E only)