Viessmann Cascade control unit - Page 27

27
Functions
Multi-boiler control unit (cont.)
Start-up delay
A delay before start-up of individual boilers can be selected, for example to
prevent boilers from cycling.
A Boiler base loadĂ1
B Mod. to boilerĂ1
C Lag boiler base load
D Mod. to lag boiler
E Boiler modulation range
F Lag boiler base load
G Boiler base loadĂ1
FK Lag boiler
KĂ1 BoilerĂ1
P System output
(two boiler system)
t
RV
Control delay
t
Wa
Shutdown delay
t
We
Start-up delay
Set values (multi-boiler control unit)
Start-up delay.
5862Ă474ĂGB
0
t
P
t
RV
K1
t
RV
FK
t
We
FK
t
Wa
A
B
C
D
E
F
G
Boiler start-up
delay 7Ămin