Combustion Air Connection; Removing The Front Panel - Viessmann VITOCROSSAL 300 Installation Instructions Manual

Vitocrossal 300 CU3A 26 to 57 Installation

Combustion Air Connection

CPVC adaptor
80 mm to 3 in.
Refer to the CU3A venting Installation
Instructions for venting configurations and
limitations.

Removing the Front Panel

CAUTION
To prevent equipment damage, install all pipework
free of load and torque stresses.
We recommend fitting an on-site support immediately
downstream of the boiler flue connection. Connect the
flue outlet to the flue pipe via the shortest possible run,
with a slight rise (min. 3°). Avoid sharp bends.
See venting Installation Instructions.
Flue gas connection:
26 and 35 kW: 3 in. (80 mm)
7
45 and 57 kW: 4 in. (110 mm)
7
Combustion air connection:
26 and 35 kW: 3 in. (80 mm)
7
45 and 57 kW: 3 in. (80 mm)
7
IMPORTANT
The boiler flue gas collector vent is not designed to
support the weight of the venting system.
WARNING
Combustion and exhaust vent pipes must not come
loose. Secure the pipes using venting manufacturer's
anchoring/mounting accessories for both combustion
and exhaust pipes.
1. Remove the retaining screw and set aside.
2. Remove boiler front panel by pulling out and lifting
up off the locking tabs.
Boiler Connections
21