Viessmann Vitodens 222-F B2TA Installation And Service Instructions Manual page 10

Preparing for installation
Preparing for boiler installation
10
L
M
(cont.)
2. Prepare the connections on the DHW
side. Install the safety assembly
(accessory or on-site provision) in
accordance with DIN 1988 and
EN 806 in the cold water line (see
page 11).
Recommendation:
Install the safety valve above the
DHW cylinder to protect it against
contamination, scaling and high tem-
peratures.
3. Prepare the condensate connection
to the on-site drain line or siphon:
■ Drain towards the back:
See dimensions for condensate
hose M and position G in dia-
gram on page 8.
■ Drain towards the side aperture:
See position H in diagram on
page 8.
4. Prepare the gas connection accord-
ing to TRGI or TRF [or local regula-
tions].
5. Prepare the electrical connections.
■ Power cable: NYM-J 3 x 1.5 mm
max. fuse rating 16 A,
230 V/50 Hz.
■ Accessory cables: NYM with the
required number of conductors for
the external connections.
■ Allow all cables in area K in the
diagram on page 8 to protrude
approx. 2000 mm from the wall.
2
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