AZB 806 - Junkers

AZB 806
Horizontal Flue Gas Ducting
for Condensing Boilers ZWBR 7, 11-25 A
7 719 001 890
6 720 610 163GB (99.08) OSW
110
40
40
Ø82
Ø127
110
Ø125
Ø 80
Ø80
Ø125
B1.3
B1.1
200
1150
200
135
B1.5
8x
155
Ø 126
155
200
155
B1.2
Ø 126
155
200
6 720 610 163-01.1O
Correct functioning is ensured only when these instructions are observed. The instructions are subject to change without
notice. The installation must be performed by a qualified installer. For the installation of the boiler, the corresponding
installation instructions must be followed.

AZB 806
Contents
Page
1 Use 3
2 General 3
3 Assembly Instructions 3
4 Assembly of the AZB 806 with flue gas
discharge through the outside wall 4
5 Minimum Installation Dimensions (C 13 )
for ZWBR 7, 11-25 A 6
6 Flue gas duct sideways through the
outside wall (C 13 ), without forward
directional elbow pieces, for
ZWBR 7/11-25 A 7
7 Flue gas duct sideways through the
outside wall (C 13 ), with forward
directional elbow pieces, for
ZWBR 7/11-25 A 8
8 Flue gas duct through the outside wall
(C 13 ) to the rear, with or without
sideways directional elbow piece, for
ZWBR 7/11-25 A 9
9 Flue gas duct through the outside wall
(C 13 ) for ZWBR 7/11-25 A 10
10 Horizontal flue gas duct through
the roof with dormer (C 13 ) for
ZWBR 7/11-25 A 11
2 0 163GB

AZB 806
1 Use
Appliance type AZB 806
ZWBR 7, 11-25 A
X
2 General
The installation of a gas condensing boiler must be in
accordance with the relevant British Standard, the relevant
Building Regulations and any local rules.
The ZWBR 7, 11-25 A gas condensing boilers conform
to the requirements of the Gas Appliance Directive
(90/396/EWG) and prEN677.
The flue gas accessory is part of CE approval when discharging
flue gas according to C 13 . For this reason,
only original Bosch flue gas accessories may be used.
The surface temperature of the fresh air duct is below
85 °C. Therefore no minimum distances to combustible
building materials are necessary. The regulations can
deviate, however, and might prescribe minimum distances
to combustible materials.
3 Assembly Instructions
The flue gas accessories must be installed for discharge
to the outside at a gradient of 3 %. If the appliance
is installed in a cold location i. e. roof space, the
fresh air duct must be insulated.
Flue gas opening through the outside wall
Installations where the double-connection duct
enters a shaft below ground level can lead to
unintentional switching off in winter due to ice
forming in the double pipe and are to be avoided
as far as possible!
LPG appliances must not be installed below
ground level.
The maximum flue gas / fresh air duct length is
8000 mm. A maximum of three 90° elbows is permissible.
Instead of one 90° elbow, two 45° bends can also
be used.
0 163GB 3

AZB 806
4 Assembly of the AZB 806 with flue
gas discharge through the outside
wall
Note:
Before connecting the flue gas accessories,
lubricate the seals on the sleeves lightly with
solvent-free grease (e. g. Vaseline).
– Slide the 90° double pipe elbow (B1.3), lightly twisting,
onto the connecting piece on the appliance (figure
4 ) ) until it can go no further.
– Determine the length L of the terminal assembly
(B1.1). Make sure that the distance from the outside
wall to the end of the terminal assembly (B1.1) is
accounted for (figure 2 ).
– Make the opening in the wall. In so doing, account for
the 3 % gradient of the flue gas duct (for Ø D, see
figure 3 and Table 1).
– Place the inner cover plate (B1.2) onto the terminal
assembly (B1.1) (figure 4 ).
– Insert the terminal assembly (B1.1) from inside to the
outside through the wall opening (if necessary
remove the double pipe elbow), and then push it,
lightly twisting, into the socket of the 90° double pipe
elbow (B1.3). Make sure that the fresh air venting slit
in the terminal assembly (B1.1) is directed downwards
(figure 4 ).
– Place the outside cover plate (B1.2) over the terminal
assembly (B1.1) (figure 4 ).
– Drill the fixation holes for both the cover plates and
fasten these using rawlplugs and screws (B1.5) (figure
4 ).
– Press the protective grating gently together and
place it into the end socket of the terminal assembly
(B1.1) (figure 4 ).
Wall thickness
S in cm
17,5-22 150
24-28 160
36-40 170
50 180
Table 1
Wall opening
Ø D in mm
Key to figure 2 and 4 :
B1.1 Terminal assembly
B1.2 Cover plates
B1.3 Double pipe elbow
4 0 163GB

2
AZB 806
160
200
10
3
min
150
S
ø125
øD
3%
ØD
4498-3.1S
B1.1
B1.2
6 720 604 911-03.1O
4
B1.2
B1.3
3%
B1.2
B1.1
B1.5
6 720 610 163-04.1O
0 163GB 5

AZB 806
5 Minimum Installation Dimensions
(C 13 ) for ZWBR 7, 11-25 A
(figures 5 and 6 )
– Ø D see figure and Table 1
3 ØD
5
3%
10
850
1025
min 1110
Ø125
512
DN 20
6 720 610 163-05.1O
6
Ø125
Ø82
115
min 1110
850
390
406,5
min 600
6 720 610 163-06.1O
6 0 163GB

AZB 806
6 Flue gas duct sideways through the outside wall (C 13 ), without forward directional
elbow pieces, for ZWBR 7/11-25 A
Caution: The maximum length must not exceed
L max = 8000 mm (figure 8 )!
7
B1.1 B1.3
Ø125
B1.2 160 210
min 100
512
115
min 100
390
7 :
B1: AZB 806
L max = 1020 mm
L
6 720 610 163-07.1O
8
B1.1
210
B2
B1.3
min 100
Ø125
115
390
B1.2
LF
160
512
L
6 720 610 163-08.1O
8 :
B1: AZB 806
B2: AZB 808, LF = 990 mm
L max = 8000 mm
0 163GB 7

AZB 806
7 Flue gas duct sideways through the outside wall (C 13 ), with forward directional
elbow pieces, for ZWBR 7/11-25 A
Caution: The maximum length must not exceed
L max = 8000 mm (figure 10)!
9
B6.2 B6.1 B1.3 min 100
B1.1
210
195
230
115
Ø125
390
B1.2
max 950
512
160
L
6 720 610 163 09.1O
9 :
B1: AZB 806
B6: AZB 814
L max = 1210 mm
10
B2
B1.3
min 100
B1.1
210
195
230
115
Ø125
LF
390
B1.2
160
max 950
B6.2
B6.1
512
L
6 720 610 163-10.1O
10:
B1: AZB 806
B2: AZB 808, LF = 990 mm
B6: AZB 814
L max = 8000 mm
8 0 163GB

AZB 806
8 Flue gas duct through the outside wall (C 13 ) to the rear, with or without sideways
directional elbow piece, for ZWBR 7/11-25 A
Caution: The maximum length must not exceed
L max = 8000 mm (figure 12)!
11
B1.2
Ø125
160
115
115
210
B1.1
L
min 100
B1.3
390
512
6 720 610 163-11.1O
11:
B1: AZB 806
L max = 1020 mm
12
B1.2
Ø125
160
210
B1.1
L2
min 100
110
LF
115
B3
B2
512
B1.3
390
L1
6 720 610 163-12.1O
12:
B1: AZB 806
B2: AZB 808, LF = 990 mm
B3: AZB 807
L = L 1 + L 2
L max = 8000 mm
0 163GB 9

AZB 806
9 Flue gas duct through the outside wall (C 13 ) for ZWBR 7/11-25 A
Caution: The maximum length must not exceed
L max = 8000 mm!
13
L1
B1.1 min 100
B3
LF
115
LF
390
B2
512
B1.1
210
B2
L2
Ø125
B1.2
160
L3
B3
6 720 610 163-13.1O
13:
B1: AZB 806
B2: AZB 808, LF = 990 mm
B3: AZB 807
L max = L 1 + L 2 + L 3 = 8000 mm
L 3 max = 1020 mm
10 0 163GB

AZB 806
10 Horizontal flue gas duct through the roof with dormer (C 13 ) for ZWBR 7/11-25 A
Caution: The maximum length must not exceed
L max = 8000 mm!
14
B1.3
L
3%
210
19
240
400
B1.1
Ø125
160
min 1112
960
850
>30°
512
14:
B1: AZB 806
19: Dormer (provided by the client)
15
L max = 1020 mm
L
6 720 610 163-14.1O
210
B1.3
LF
19
240
400
3%
B2
˘125
B1.1
B1
˘125
960
160
850
>30°
6 720 610 163-15.1O
512
15:
B1: AZB 806
B2: AZB 808, LF = 990 mm
19: Dormer (provided by the client)
L max = 8000 mm
0 163GB 11

Worcester Heat Systems Limited
Cotswold Way, Warndon,
Worcester WR4 9SW.
Telephone: (0 19 05) 75 46 24.
Fax: (0 19 05) 75 46 19.
Technical:
Telephone: (09 90) 26 62 41
Fax: (0 19 05) 75 72 24
Service:
Telephone: 03 45 25 62 06
Fax: (0 19 05) 75 47 01