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Table of contents
Contents
• Page
Technical data
.......................
10
1.1
Technicaldataoftheheaters
...............
10
1.2
Permissible extensions
................
•.
•.
. .
11
1.3
Technical data
of
the circulating pumps . . . . . . .
11
1.4 Account
of
heater variants . . . . . . . . . . . . . . . . . .
14
2 General de$Cription . . . . . . . . . . . . . . . . .
11
3 First start . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25
•
3.1
General remarks ;
.....
,
...........
; , . . . . . .
25
3.2
Bleeding the
water
cycle . . . . . . . . . . . . . . . . . . .
25
3.3
Bleeding the fuel supply system . . . . . . . . . . . . .
25
3.4 Combustion control .
•.
. . . . . . . . . . . . . . . . . . . . .
25
3.5
Fault finding at first start . . . . . . . . . . . . . . . . . . .
26
4 Fault-finding . . .
..
. . . . . . . . . . . . . . . . . . . . .
36
5
5.1
5.1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
5.1.7
5.1.8
5.1.9
5.1.10
5.1.11
5.1.12
5.1.13
5.1.14
5.1
.15
5.1.16
5.1.17
5.1.1e
5.1.19
5.1.20
5.1.21
5.1.22
Diagnosis·and repairing . . . . . . . . . . . .
46
Parts of
the
heater . . . . . . . . . . . . . . . . . . . . . . . .
47
Electronic control unit . . . . . . . . . . . . . . . . . . . . .
47
Motor/
r.p.m. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
48
Clutch
..................................
49
Toothed gearing . . . . . . . . . . . . . . . . . . . . . . . . . .
50
Regulation
of
combustion air . . . . . . . . . . . . . . .
52
Combustion air fan . . . . . . . . . . . . . . . . . . . . . . . .
54
Fuel
pump
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
55
Solenoid valve . . . . . . . . . . . . . . . . . . . . . . . . . . .
58
Fuel nozzle / nozzle connector . . . . . . . . . . . . . .
59
Electronic ignition unit . . . . . . . . . . . . . . . . . . . . .
64
Ignition electrodes . . . . . . . . . . . . . . . . . . . . . . . .
65
Flame detector photocell . . . . . . . . . . . . . . . . . . .
66
Fuel line on the heater . . . . . . .
..
. . . . . . . . . . . . .
68
Combustion dhamber / combust. air swirler . . .
69
1-ieat
exchang~r •
..
:
..................
'.
. . . .
70
OverheaUuse/
overheat thermostat . . . . . . . . .
71
ControLthe,rmostat . . . . . . . . . . . . . . . . . . . . . . . .
73
Temperatu'
re
sensor . . . . . . . . . . . . . . . . . . . . . . .
75
Fan
theJmostat : :
.......
: . .
..
: . . . . . . . . . . . .
76
Protection· cap (burner head) . . . . . . . . . . . . . . . . 77
Protection cap (thermosJfits) . . . . . . . . . . . . . . . .
78
Support
/seat
..................
:
.........
•
78
5.2
Water circulating pumps . . . . . . . . . . . . . . . . . . .
79
5.3
Fuel filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
81
5.4
Measuring instruments and tools . . . . . . . . . . .
83
5.5
Testing instruments . . . . . . . . . . . . . . . . . . . . . .
84
6 Description
of
operation . . . . . . . . . . . .
93
6.1
Sequence
of
electrical function for
control unit
1553
. . . . . . . . . . . . . . . . . . . . . . . . . .
93
6.2
Functional diagram for control unit 1553 . . . . . . •
95
6.3
Sequence
of
electrical function for
control unit 1563/64 . . . . . . . . . . . . . . . . . . . . . . .
97
6.4 Functional diagram for control unit 1563/64 . . .
97
·
-s-
Page
7 Wiring diagrams
....................
100
7.1
Automatic wiring diagram for DBW
2010
......
100
7.2 Automatic wiring diagram ,for DBW2012.Q2
...
102
7.3
Autortiatic wiring
for
DBW 2020 (12/24
V)
. and DBW
300
(24
V)
................
.
..
.
...
104
7.4 Automatic wiring
for
DBW 300
(12
V)
and DBW
350
(12/24
V)
....................
106
7.5
. Automatic wiring 1or DBW
2010.61
...
/
paw
202Q.51
..
J.DBW
300.31
...
/
DBW
.
350.11
...
(with control unit
1563)
;
...................
108
7.6
Automatic wiring diagram
for
DBW
2010, •
DBW
2012
and DBW
2022
(with control
unit
1564)
...........
,
...........
•
........
11
O
8 Disassembling instructions
........
116
8.1
Important informations
...
'
.................
116
8.2
Disassembling instructions DBW 2010/12
.....
118
8.3
Disassembling instructions DBW 2020 I
9
9.1
9.2
9.3
9.4
9.5
•
DBW
2022
/ 300 /
350
....
; ,
..............
..
120
Maintenance
.........................
122
Visual control
...........
;
................
122
Burner
..............................
:
...
122
Fuel
filter
..........................
,
..
,
...
122
Function control
...........
0
..............
122
Spare parts storage
.......................
122
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