After installing the controller in a suitable location, wiring connections can be made as shown above.
The following criteria apply to the installation:
• The incoming AC mains supply should be 230V AC and fused at 6 Amps.
• Optimum cable size for installation is 1.5 mm
2
; wiring colours should be in accordance
with the current requirements of the IEE Wiring Regulations.
• Cable entry should be made at the cable entry point
• All wiring connections should be securely made, and be firmly gripped beneath the terminal clamp.
Do not restore the mains supply to the system until all associated items are fully installed.
NOTE:
All electrical installation work should be carried out by a suitably qualified Electrician or other
competent person. If you are not sure how to install this controller consult either with a qualified
Electrician, Heating Engineer or your boiler / heating system supplier for advice on how to continue.
Do not remove or refit the SP120 without the mains supply to the system being isolated.
AFTER INSTALLATION
After completing installation and powering up the SP120 for the first time the controller will behave
in the following way:
All the indicators on the display and the backlight will be turned on for a few seconds. The internal
firmware version will then be displayed for a few seconds, and the SP120 will then operate in
Normal
mode (controller output OFF).
If the Reset Button is pressed, the SP120 will behave in the same way as described above, and any
previously saved user settings will be deleted and overwritten with the default settings, except when
the SP120 is in SERVICE mode.
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SP120 INSTRUCTION MANUAL
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