System Layout 5 - Viessmann VITOCROSSAL 300 Technical Data Manual

Installation Examples

System Layout 5

Vitocrossal 300 CU3A with...
- DHW storage tank
- low-loss header
- multiple heating circuits with mixing valves
- one heating circuit without mixing valve
When designing a system as illustrated above, please contact your local Viessmann Sales Representative for assistance.
Legend
A Vitocrossal 300 CU3A boiler with Vitotronic
200, KW6B outdoor reset control
B Outdoor temperature !
C Boiler pump
20
Vitotronic 200-H, HK1B *1
D
E Mixing valve temperature sensor ?
Heating circuit pumps
F
Accessory kit for heating circuit with mixing valve
G
H Heating circuits with mixing valves
Viessmann temperature sensor for low-loss header ?
I
J Low-loss header (if required)
K DHW circulating pump sA
DHW tank temperature sensor %
L
M DHW storage tank
Expansion tank
N
DHW recirculation pump sK
O
P Heating circuit pump
Vitotrol remote (optional)
Q
R Radiator heating circuit
S Temperature and pressure relief valve
Pressure relief valve
T
* Function based on coding of address 33
24
*
28/20
Vitocrossal 300 CU3A 26 to 57 Technical Data
*1 Contact your local Sales Representative for details.
Vitotronic 200-H, HK1B mixing valve control with
LON communication module can be used instead
of the accessory kit and Vitocontrol.
IMPORTANT
Please note location of expansion tank N.
IMPORTANT
System separation is required of underfloor heating
systems employing non-oxygen diffusion barrier tubing.
All components on the secondary side of the heat
exchanger must be made of corrosion-resistant materials.