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

Matching the burner output to the flue system
Correction factor
Flue system
Open flue operation 60 mm
7
Room sealed operation
7
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 setting of each connected boiler by a
correction factor to match it to the flue system.
System conditions:
Shared flue in shaft 100 mm
■
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".
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.
Rated heat-
ing output
(kW)
26
35
60/100 mm 26
35
Commissioning, inspection, maintenance
(cont.)
0 1 2
Max. pipe length (m)
3 12 15
4 9 15
2 6 11
2 5 8
■ 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
3 4 5
— — —
22 25
—
16 20
—
12 16 25
6
—
—
—
—
25