SYX66x Commissioning Guide
V1.10.3 300117
Page 6 of 61
1.3
INPUTS
Six temperature sensor inputs and two digital Inputs are available and are to be used as follows.
The sensor characteristic type to be used is dictated by the controller part number:
Terminal Pin
Function
Details
13&15
Pin 1
Outside Air Temperature
Sensor Part:
TEU
•
Outside economy
•
Compensation
•
Frost protection
14&15
Pin 2
Compensator Flow Sensor
Sensor Part:
TEAT Immersion
or TEP Strap-On
•
Heating
Valve
Compensation
Control
16&15
Pin 3
Boiler/Heating Return Sensor
Sensor Part:
TEAT Immersion
or TEP Strap-On
•
Return Pipe Frost protection
(Optional but strongly
recommended)
17&15
Pin 4
Boiler Flow Sensor
Sensor Part:
TEAT Immersion
or TEP Strap-On
•
One or two boiler control
•
Boiler compensation
•
Boiler high temperature alarm and
boiler cut out
31&33
32&33
Pin 5
Pin 6
Space Sensor 1
Space Sensor 2
Sensor Part:
TEHR
•
Optimum Start/Stop
•
Averaging (when 2 used)
•
Day economy
•
Room Influence
•
Space Frost protection
27&28
Pin 9
Remote Day Extend button for
heating (and HWS if selected)
LAP5
•
Closed contact extends the time
schedule for as long as the contact
is closed. Heating controls to day
requirements as required, or not.
29&30
Pin 10
Auxiliary Switch Input
(Close switch to activate)
•
Multi-function input
•
Installer can select
one
of the
following uses :
1.Frost Mode (Holiday Switch)
2.HWS Demand (Boiler Set point Request)
3.Summer Switch
4.Underfloor Heat Demand
Special Note:
KP10 sensors used with the SYX660 controller are polarity sensitive. The sensors have a +ve and
–
ve connection.
When connecting these sensors to the SYX660 please connect
–
ve
side of the sensor to terminals
15
or
33
and use
the +ve to the remaining connection as stated above. Other controller types and their sensors are not polarity
sensitive and so have no requirement for special attention.