Multiple Boiler Installations (Vertical Termination With Multiple Boilers) - Viessmann Vitodens 100-W WB1B Series Installation Instructions Manual

Direct Venting (Two-pipe System)
Vent Length Requirements
Multiple boiler installations (vertical termination with
multiple boilers)
Fig. 54
Fig. 55
54
(continued)
4 in.
(100 mm)
Rigid Venting Systems Installation Instructions
When terminating the vent pipes of multiple Vitodens
boilers, a minimum clearance of 4 inches (100 mm) is
required between the outside edges of each vent pipe.
4 in.
(100 mm)
6 in.
(150 mm)
4 in.
4 in.
(100 mm)
(100 mm)