SYX66x Commissioning Guide
V1.10.3 300117
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17.
FAQ
Q. Will the controller compensate the Boilers?
A. Yes. The boilers follow the set points from either the heating or the Hot Water. If there is no Hot Water Demand
then the boiler will track the set point of the VT Heating system plus the boiler schedule difference. If there is no VT
sensor connected then the schedule difference is ignored.
Q. Will the SYX66x controller provide 24vAC for my actuator?
A. No. You will require an external Power Supply. An isolating Transformer is preferred.
Q. Can I re-use the existing wiring?
A. Yes. If the wiring worked on the previous controller then there is no real reason why they cannot be re-used. If the
wiring causes issues with the SYX66x controller is probably caused issues with the old device as well. If replacing
sensor wiring then use Screened Twisted Pair cable from the sensor to the controller terminal.
Q. The sensors are not reading as I would expect.
If the sensors are going up and down please observe screening cable recommendations and grounding of cable
screens. Also check that the correct GND connections have been used for all inputs and outputs. If the sensors are
reading a little high or a little low then use the sensor calibration feature in the Connections Menu.
Q. What are the access codes for the user levels?
A. User 0 = 0000, User 1 = 1111, User 2 is 0112, User 3 is for special access purposes only.
Q. I want to change the controller IP address, how can this be done?
A. Contact SyxthSense and we will provide assistance on this.
Q. Does the time clock automatically adjust for Summer/Winter and Leap Years?
A. Yes, the clock is self-managed for these events.
Q. The controller is showing an Optimiser Alarm, what should I do?
A. See section 14.3 If the optimiser Alarm cannot be resolved this means that the sensor location or plant has an
issue preventing the use of self-adaption (i.e. the required room set-point cannot be achieved at the room sensor
location).
Q. My Hot Water Relay isn
’t working, what should I check?
A. Make sure you have the link between terminals 20 and 30, this is commonly overlooked. This link provides the 0v
connection to the power supply so it can be used to drive the relay.