Viessmann Vitoflex 300-UF Series Installation And Operating Instructions Manual page 25

Vitoflex 300-UF Installation & Operating
Recirculation System
Item Boiler Model
no. Description
1 Pipe adaptor primary air 1
2 Pipe adaptor primary air 2
3 Elbow 130 x 0.9/90°
with PD
4 Flue damper blade
D=5d in. (130 mm)
5 Pipe 130 x 0.6
L=9 in. (250 mm)
7 / 8
6 Pipe 130 x 0.6
L=19f in. (500 mm)
7 Pipe 130 x 0.6
L=39d in. (1000 mm)
8 Clamping band 130
with gasket
9 Distributor
10 Fan DMVL
11 Intake cone
12 Recirculation bracket
13 Threaded rod M12
L=7b in. (190 mm)
14 Threaded rod M12
L=9 in. (250 mm)
7 / 8
15 Pipe clamp 125-130 M12
16 Fan bracket
17 Mesh 8 x 8
18 Pipe insulation
L=39e in (1000 mm)
19 Bolt M12 x 1 in. (25 mm)
20 Nut M12
21 Lock washer M12
22 Bolt M8 x 1 in. (25 mm)
23
Bolt M8 x c in. (20 mm)
24 Nut M8
25 Lock washer M8
26 Bolt M5 x c in. (20 mm)
27 Lock washer M5
x Distance between the
recirculation fan and the
supply flange.
y Height of the horizontal
recirculation section.
Note: Items 6 and 7 need to be lengthened by the customer.
(continued)
UF 390 UF 530
Quantity Quantity
1
1
5
4
2
1[1x L=8 in. 3[1x L=8
7 / 8
(225 mm)] (225 mm)]
3[1x L=31c in. 3[1x L=31c in.
(805 mm)], (805 mm)],
1[1x L=36 in. 1[1x L=32f in.
(914 mm)] (830 mm)],
1[1x L=36 in.
(915 mm)]
18
1
1
1
1
2
--
2
1
1
4
4
4
8
6
8
6
14
4
4
27e in. (695 mm) 27e in. (695 mm) 28
41b in. (1055 mm) 51a in.(1303 mm) 49b in.(1258 mm) 51d in. (1299 mm) 71
UF 720
Quantity
1 1
1 1
5 5
4 4
-- 1
in. 1[1x L=9 in.
7 / 8
(228 mm)]
5[1x L=18d in.
(460 mm)],
1[1x L=28e in.
(720 mm)],
1[1x L=33a in.
(845 mm)]
18 18
1 1
1 1
1 1
1 1
1 2
1 --
2 2
1 1
1 1
5 5
4 4
4 4
8 8
6 6
8 8
6 6
14 14
4 8
4 8
in. (735 mm) 33a in. (845 mm) 33a in. (845 mm)
7 / 8
Mechanical
UF 950 UF 1250
Quantity Quantity
1
1
5
4
-- --
3[1x L=12d in. 1[1x L=12d in.
(308 mm)], (308 mm)]
1[1x L=16d in.
(409 mm)]
4[1x L=36 in. 5[1x L=36 in.
(915 mm)] (915 mm)]
19 20
1
1
1
1
2
-- --
2
1
1
6
4
4
8
6
8
6
14 14
8
8
in.(1825 mm)
7 / 8
1
1
5
4
1
1
1
1
2
2
1
1
6
4
4
8
6
8
6
8
8
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