SYX66x Commissioning Guide
V1.10.3 300117
Page 50 of 61
Set-Up - Rotate Boilers
– During set up you can decide if you would like to rotate the boilers. If set to disabled then
the boilers will not rotate either manually using the Sequence menu option or in Auto.
Note: If you have one boiler but this has two stages (e.g. Low/High Fire) then leave the option Disabled and Set
Number of Boilers to 2.
Number of Boilers
– Chose between 1 and 2 On/Off Boilers. This sets the control and option to rotate is enabled. If
you have more than two boilers then you can use the 0-10v output and connect a suitable sequence module
BPRO Used
– Yes/No – Have you used a Boiler Pro Sequence Module to control multiple Boilers? If “No” is selected
then the boiler demand signal has as 2v DC starting condition to the ramp when the lead boiler is required. If YES then
the signal starts at 0v for correct operation of the Boiler Pro sequencers.
Flow Sensor Used
– Yes/No – If you are replacing an older DC1100 or 1400 it may not have had a wired Flow Sensor.
If this is the case then set the Flow Sensor to No. The controller will display a value of 20’C for this sensor to stop
alarms and allow the boilers to remain active when in a demand condition.
