SYX66x Commissioning Guide
V1.10.3 300117
Page 12 of 61
4
Connection Diagrams
4.1 Connection Diagram: Optimiser Mode
•
One Space Sensor is required for the optimiser to function. The second is optional.
•
The HWS Control and its options are optional.
•
The boilers
only
serve the HWS Function (if linked) in Optimiser Only application
•
The Optimiser Start/Stop Signal is provided from the Plant Start terminals 7&8, wire your switch feed into Terminal 7
and Plant Start Connection out from Terminal 8
•
Time Extend and Holiday features apply
•
0-10v Output option supported for the boiler demand or boiler set point control.
•
VT Valve Control not supported
•
Plant Start Connection is optimised on and optimised off as default. The plant connection remains closed through the
occupied period. Optimum Off can be disabled meaning plant then turns off at end of occupied period on space High
Temperature.
•
Outside Air Sensor can be fitted to provide Outside High Temp Shutdown if required.
•
Outside sensor will display as 0°C if not connected or if sensor is faulty when in Optimiser Mode.
•
If boiler control is required then a boiler flow sensor is required
•
If plant room is exposed and return frost is required please connect a return sensor
•
Observe KP10 sensor type polarity and GND connection see note Page 6
SYX 66x
1 2
3 4
5 6
7 8
9 10
11 12
13 14 15 16 17 18
12vDC 0v
Space 1
Space 2
L
N
Plant
27 28 29 30 31 32 33 34 35 36
-ve
-ve
