System Layout 4 - Viessmann VITOCROSSAL 200 CI2 Series Installation Instructions Manual

Vitocrossal 200 CI2 Installation

System Layout 4

Multiple (up to 16 boilers) Vitocrossal 200, CI2 with...
- system pump
- DHW
Legend
Vitocrossal 200, CI2 boiler
A
Common supply temperature sensor TSI
B
on lead boiler
C Common boiler pump
DHW storage tank
D
Hydronic pressure bypass (if required)
E
Connection to BMS (BACnet/MODbus)
F
Heating system
G
H Boiler isolation valve (power open/spring return)
* Optional accessory (depending on system layout
and configuration)
Note: When using constant boiler/system pumps,
a hydronic pressure bypass may be required.
Each boiler in a cascade system must be able to be
individually isolated from the heating system through the use
of boiler isolation valves.
When designing a multiple Vitocrossal 200, CI2 system
as shown above, please reference applicable multiple
Vitocrossal 200, CI2 technical documentation, and contact
your local Viessmann Sales Representative for further
assistance.
This installation example depicts a possible piping layout
for multiple Vitocrossal 200, CI2 boilers equipped with
Viessmann System Technology. Please note that this
example is based on a simplified conceptual drawing only!
Piping and necessary componentry must be field verified.
A low water cut-off (LWCO) must be installed where
required by local codes.
Proper installation and functionality in the field is the
responsibility of the heating contractor.
WARNING
If a DHW storage tank other than a Viessmann Vitocell
300 tank is used, the installer must verify proper
operation of the Viessmann DHW tank temperature
sensor with the original manufacturer of the tank.
Viessmann strongly recommends the installation of a
temperature tempering valve in the DHW supply line.
System Layout
43