611
Thermo H
6 Wiring diagrams D heater
Position
Designation
BA
Operation indicator 3W (max. 5W)
FA
Flame indicator 3W (max. 5W)
UP
Circulation pump
STT
Spheros Thermo Test (diagnostic tool)
F1, F2*
Car flat-type fuse 25A acc. to DIN 72581 part 3 or
ISO 8820-3
F3 - F7
Car flat-type fuse 5A acc. to DIN 72581 part 3 or
ISO 8820-3
HS
Main switch
UPFA
Circulating pump external control
Spar
Economic setting
DVW
Nozzle preheater (in the heater)
ZFG
Electronic ignition unit (in the heater)
MV
Solenoid valve (in the heater)
BM
Combustion air motor (in the heater)
Legend for wiring diagrams
Connector
Description
C
To vehicle (Power)
C1
Terminal 30 (+), UP (DVW)
C2
Terminal 31 (–), UP (DVW)
C3
Terminal 30 (+), HG
C4
Terminal 31 (–), HG
C5
Main switch
C6
UPFA
C7
Terminal 61 (D+)
C8
Econimic setting (Spar)
C9
Operation ind
C10
Flame ind
T
Temperature sensors
T1
Temp. sensor
T2
Overheat protection PT500 +
T3
Ground
P
Circulating pump
P1
Circulating pump +
P2
Circulating pump –
G
Diagnosis STT
G1
Terminal 30
G2
Ground
G3
S Bus
G4
--
Connector pin assignment
1 2
3
5 6
7
8
9
10
4
1
2
3
1
2
1
2
3
4
Summary of Contents for Thermo H 160
Page 47: ...memos...