Viessmann Vitocrossal 300 Series Technical Data Manual page 24

Installation Examples
System Layout 5
Vitocrossal 300 CU3A with...
- DHW storage tank
- three zone circuits
Legend
A Vitocrossal 300 CU3A boilers
DHW storage tank
B
C DHW pump [output 21]
DHW recirculation pump [output 28/20]
D
Thermostat zone circuits 1, 2, 3 (dry contact)
E
F Zone circuit 1 [output 157]
AM1 extension module (accessory)
G
H Zone circuit 2 [output A1 - AM1 extension module]
I Zone circuit 3 [output A2 - AM1 extension module]
Outdoor temperature sensor
J
K DHW sensor
24
J
K
Vitocrossal 300 CU3A 26 to 199 Technical Data
Installation of different heating circuits...
DHW production
■
3 zone circuits
■