Matching The Burner Output To The Flue System; Burner Adjustment When Connecting Multiple Flues To A Shared Flue System - Viessmann VITODENS 111-W Installation And Service Instructions Manual

Commissioning, inspection, maintenance

Matching the burner output to the flue system

To match the burner output to the system flue pipe
length, a correction factor can be set.
01. Tap MODE.
02. / repeatedly until CONFI flashes.
03. OK to confirm.
"P" is displayed in the l.h. display area. The r.h.
display area flashes.
04. Use / to select "12".
05. OK to confirm.
"1" flashes in the l.h. display area.
Correction factor
Flue system
Open flue operation 60 mm
7
Room sealed operation
coaxial
Open flue operation 80 mm
7
Room sealed operation
coaxial

Burner adjustment when connecting multiple flues to a shared flue system

When connecting several Vitodens 111-W to a shared
flue system:
Adjust the burner settings of each connected boiler by
a correction factor to match it to the flue system.
System conditions:
■ Shared flue in shaft
7
Balanced flue connection pipe from boiler to shaft,
■
80/125 mm
7
01. Tap MODE.
02. / until CONFI flashes.
03. OK to confirm.
"P" appears in the l.h. display area. The r.h. dis-
play area flashes.
04. Use / to select "12".
05. OK to confirm.
"1" flashes in the l.h. display area.
06. Use / to select "4".
26
Rated heat-
ing output
(kW)
26
35
60/100 mm 26
7
35
26
35
80/125 mm 26
7
35
100 mm
06. Use / to select "3".
07. OK to confirm.
The selected correction factor flashes in the r.h.
display area.
08. Refer to the following table for the correction factor
required for the connected flue system.
09. Use / to change the correction factor.
10. OK to confirm. The selected value is adopted.
0 1 2
Max. pipe length (m)
3 12 15
4 9 15
2 6 11
2 5 8
16 25
—
11 25
—
5 20 25
5 13 22
■ Minimum shaft cross-section
Square: 175 x 175 mm
–
Round: 195 mm
–
7
■ Height between floors min. 2.5 m
■ Max. 6 boilers with the same rated heating output
connected to the flue system
07. OK to confirm.
"0" flashes in the r.h. display area.
08. Refer to the following tables for the correction fac-
tor required for the flue system.
09. Use / to set the correction factor.
10. OK to confirm. The selected value is adopted.
3 4 5
— — —
22 25
—
16 20
—
12 16 25
— — —
— — —
— — —
25
— —
6
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