DBW 2010 / 2016 7 Circuit Diagrams
707
Legend Fig. 705:
Item Description Comment
A1 Heater Not earthed
A2 Control unit SG 1563
B1 Flame monitor Ensure proper polarity
B2 Temperature sensor Polarity as desired
B3 Fan thermostat In water circuit, for vehicle fan (ON - OFF)
F1 20 A fuse Flat fuse SAE J 1284
F2 10 A fuse Flat fuse SAE J 1284
F3 Fuse Flat fuse SAE J 1284
F4 Fuse Flat fuse SAE J 1284
F5 Thermal fuse Polarity as desired
G Battery
H1 LED, green Operation indicator (in Item P)
H2 LED, yellow Operation indicator (in Item P)
H3 Lamps Symbol lighting (in Item P)
H4 LED, green Operation indicator (when using S1)
K1 Relay (in Item A2) For circulation pump
K2 Relay (in Item A2) For combustion air fan
K3 Relay (in Item A2) For ignition spark generator
K4 Relay (in Item A2) For solenoid valve
K5 Relay
Only necessary with battery switch in minus
K6 Relay
K7 Relay for vehicle fan Only necessary together with B3
M1 Motor Circulation pump
M2 Motor Combustion air fan
M3 Motor Vehicle fan
P Timer (digital) for programmed operation, no longer available
S1 Switch (ON - OFF) Alternative to Item P
S2 Switch Battery switch
S3 Switch On water valve
S4 Switch Economy mode
S5 Switch (for vehicle fan) Alternative to Item S6
S6 Switch (for vehicle fan) Alternative to Item S5
S7 Switch For circulation pump, separate ON - OFF
U Ignition spark generator With ignition electrodes
V1 Diode In control unit Item A2
W Wiring harness Control unit - heater
X1 Plug connector, 8-pin For Item P
X2 Plug connector, 2-pin
Y Solenoid valve Polarity as desired
Digital timer P:
With plus on Connection 9 = continuous operation with immediate heating,
without plus on connection 9 = heating duration: 1 hour
To vehicle terminal 75, if present – otherwise terminal 15
Motor vehicle lighting (terminal 58)
Hashed lines and relay K5 and K6 only when using battery switch S
Alternative
Vehicle terminal 15
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