13. Install flue sensor wiring back to the spade con-
nections on the flue sensor.
14. Open manual gas shut-off valve, remove elec-
trical padlock and restore power to the unit.
15. Turn on the unit and verify proper boiler operation.
16. Ensure proper sealing of the flue sensor, plug
and flue pipe using soap and water solution.
Flue Sensor Repair Kit
for Prestige Solo 175, 250 and 399
3
Revised date: 04/19/12
2011-12 Flue Sensor Repair Lit _Prestige 399
Fig. 3: Installation of Flue Sensor in
Mounting Plug
