2.4.3
Single boiler application with extra fail-safe protection using PDS
This example shows how to connect a PDS to the EBC20. The PDS carries out extra fail-safe protection.
• Connecting a PDS:
Remove the factory fitted loop between terminals 26 and 28
Connect the PDS between terminals 26 and 28
• Connect the supply voltage to terminals 1–3
• Connect the burner startsignal (-) to terminal 12
• The start signal to the burner comes back on terminal 14
• Connect the burner start signal (+) to terminal 11
• Loop terminals 12 and 13
• Connect the chimney fan to terminals 4–6
• Connect the pressure transducer (XTP) to terminals 23–25 using a a shielded cable 3x0,75 mm
2
and con-
nect the cable shielding to the cable bracket
• Set the value in menu 31 to 1 (PDS connected).
• NB: If
is flashing, the EBC20 is preparing for a PDS-check.
3002878-EBC20-UK
Pressure control •
19
