Viessmann Cascade control unit Installation, Operating And Service Instructions page 16

Weather-compensated cascade control for up to four gas fired wall-mounted boilers
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Control
System details
Set values
confirm
/
for selecting following
parameters:
H Set room temperature
Standard/reduced mode/
holiday mode
H Outside temp. low end
H Flow temp. low end
H Design temp. outside/flow
H Heating curve slope
H Flow temperature
minimum/maximum
H Minimum flow temperature
frost protection
H Room influencing factor
H Time constant summer mode
H Difference summer mode
H Heat-up time min./max.
H Heat up room factor
H Heat up outside factor
H External demand flow
temperature
H Boiler switch-on delay
H Party key time
H Building type
H Diff. flow temperature fault
H Time flow temperature fault
confirm; value flashes
/
change value
confirm value
back to previous menu
*1
Configuration is required if a pressure flue gas cascade has been connected
(see page 13).
16
(cont.)
Time switch
confirm
/
for selecting weekday
confirm; switching time flashes
/
change time
confirm
back to previous menu
Holiday program
confirm
/
for selecting start and end
confirm;
back to previous menu
Hours run starts
Scanning individual boilers
back to previous menu
Faults
confirm
/
for scanning faults
back to previous menu
Configuration
confirm
/
for "Yes" or "No"
confirm
Multi-boiler control unit
*1

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