SYX66x Commissioning Guide
V1.10.3 300117
Page 51 of 61
12.2
Values Page
Schedule
Difference
– This is the added offset to the boiler set point when the boilers are feeding a VT Valve. This offset is
designed to overcome system losses in the distribution thus ensure the heating demand is being met.
Boiler Low
– The minimum set point when the boilers are in demand
Return Temp
– The current system return temperature
Return Frost Set point
– The temperature below which boiler frost protection will become active. This will bring on the
heating until the return
temperature has risen above 45’C. Pump Overrun will be active after this period. When a boiler
frost period is active, the Boiler Status lamps will flash Red
Boiler Control
– This is the current boiler demand signal over the range 0-100%
Boiler Set point
– This is the current boiler set point that is the target for the controller to meet.
