Application - Viessmann Vitocrossal 300 CU3A Application Manual

Vitocrossal CU3A
Zone Control Wizard Setup 1 Zone Circuit: Fixed Set Point w/no configured pump output
If you are zoning with pumps, consider this application for your next install. This system shows a Vitocrossal CU3A
with an indirect water heater and a four zone single temperature system. Upon a call for heat from a thermostat,
the associated zone pump is energized by the multi-zone control. The connection of the heat demand output of the
Multizone Control will provide a demand to the DE1 of the EA1 boiler generating a ZC1 set point demand. This
is a very simple control solution for single temperature applications.
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Since this particular application is a single
temperature circuit, select 1 Zone Circuit from
the menu options.
This application is based on a Fixed Setpoint
temperature during a zone call for heat.
Press OK to confirm selection.
Enter the value that is to be used by the boiler
as a target water temperature where there is a
call for heat. You can adjust the values by arrowing
down or up to the correct set point value and
press OK.
There is no assigned pump for this application.
Pressing the OK button will not assign any
specific pump output
The zone circuit summary indicates no
pumps selected.
The Start-up is finished and boiler is ready
for operation. Press OK to continue