Safety Assembly To Din 1988 And En 806 At The Cold Water Connection; Balanced Flue Terminal; Connecting The Downstream Balanced Flue Pipe - Viessmann Vitovalor PT2 Installation And Service Instructions For Contractors

Installation sequence
Heating water and DHW connections
!
Please note
Under certain operating conditions, DHW outlet
temperatures above 60 °C may arise, which
could result in scalding.
Install an automatic thermostatic mixing valve
(accessories) in the DHW line as protection
against scalding.

Safety assembly to DIN 1988 and EN 806 at the cold water connection

A
B
D E F GH D
C
O
Fig. 31
Safety assembly
A
B Safety valve 10 bar (AT: 6 bar)
Visible discharge pipe outlet point (tundish)
C
Shut-off valve
D
Flow regulating valve (installation recommended)
E
F Pressure gauge connection
Non-return valve
G
Note
Fit safety assembly A on site immediately upstream
of the cold water connection on the Vitovalor PT2. No
shut-off equipment may be installed between the
safety assembly and the Vitovalor PT2. Install a dis-
charge line with constant fall and in a frost-free
C
environment.

Balanced flue terminal

Connecting the downstream balanced flue pipe

Route all horizontal sections of the flue pipe with a
constant fall of 3°.
Flue system installation instructions
Note
Only use the "System certificate" and "Skoberne
GmbH flue system" labels in conjunction with the
Viessmann flue system made by Skoberne.
Do not carry out commissioning until the following
conditions are met:
Free passage through the flue gas pipes.
■
■ Flue system with positive pressure is gas-tight.
■ Inspection port covers checked for secure and tight
seating.
40
(cont.)
D H L M D N K
K
H
K
L
M
N
O
■
■
Drain outlet
Cold water
Drinking water filter
Pressure reducer to DIN 1988-2, Dec. 1988 issue
Non-return valve/pipe separator
Cold water connection at connection set (accesso-
ries)
Apertures for ensuring sufficient combustion air sup-
ply are open and cannot be closed off.
Applicable regulations on installing and commission-
ing flue systems have been followed.
Danger
Leaking or blocked flue systems or an insuffi-
cient supply of combustion air cause life threat-
ening poisoning due to carbon monoxide in the
flue gas.
Ensure the flue system functions correctly. Aper-
tures for combustion air supply must not be able
to be closed off.
Prevent condensate drainage via a wind protec-
tor.