Connections; Boiler Venting; Connecting Power; Connecting Heating System - Viessmann VITODENS 222-F Installation Instructions Manual

Vitodens 222-F, B2TA 19 and 35 Installation

Connections

(continued)
Refer to the Vitodens Venting System
Installation Instructions
2 imperfect threads
Manual gas shutoff
Open
Leave 2 threads bare
Closed

Boiler venting

The Vitodens 222-F B2TA boiler comes with a pre-installed
vent pipe adaptor A.
Run venting system, single-wall or coaxial, through the
side wall or the roof, taking the shortest possible route
and at a rising angle (min. 3º).
WARNING
Remove outer gasket if single wall (boiler room air
dependant) venting system is used.
CAUTION
Under certain climatic conditions some building materials
may be affected by flue products expelled in close
proximity to unprotected surfaces. Sealing or shielding of
the exposed surfaces with a corrosion resistant material
(e.g. aluminum sheeting) may be required to prevent
staining or deterioration. The protective material should
be attached and sealed (if necessary) to the building
before attaching the vent termination. It is strongly
recommended to install the vent termination on the
leeward side of the building.

Connecting power

The Vitodens 222-F boiler has a external accessories
connection box installed, which requires a 120 VAC
power supply from a wall receptacle. Refer to the wiring
diagram (see page 40).

Connecting heating system

Flush heating system thoroughly prior to connecting boiler

Proper piping practice

Support piping by proper suspension method. Piping
must not rest on or be supported by boiler. Use moderate
amount of dope.
Use an approved pipe sealant or teflon tape when
connecting the following installation fittings.

Gas shut-off valve connection

1. Make gas connections in accordance with codes
CAN/CSA B149.1 and .2 or National Fuel Gas Code
ANSI Z223.1/NFPA 54, as well as local codes.
2. Connect gas shutoff valve to the boiler gas
connection.
3. Once connected close gas shutoff valve on boiler.
Boiler Connections
13