Lochinvar Fire Tube Boiler FTX600N

Set the SMART SYSTEM control module display to Parameter Mode

Check settings of external limit controls (if any)

Sign off on the control settings check

Inspect the condensate drain line, vent line, condensate PVC fittings, and condensate trap

Remove the four (4) screws securing the top cover to the condensate trap and remove the cover

Locate the plastic ball inside the float tube. Verify there is nothing under the ball causing it to not seat properly

Fill with fresh water until the water begins to pour out of the drain

Replace the top cover and the screws removed in Step 2

Sign off on the condensate trap cleaning

Inspect flame through observation window

If the flame is unsatisfactory at either high fire or low fire, turn off boiler and allow boiler to cool down.

Upload a photo of the burner before cleaning

Remove the burner and clean it thoroughly using a vacuum cleaner or compressed air. Do not use compressed air to clean burner if performed inside a building.

Upload a photo of the burner after cleaning

When replacing the burner, ensure gasket is in good condition and positioned correctly

Sign off on the burner flame check

Ignition and flame sense electrodes removed from the boiler heat exchanger access cover

Upload a photo of the removed electrodes

Deposits accumulated on the ignition/flame sense electrode removed using sandpaper

Were the electrodes cleaned satisfactorily?

If the electrodes cannot be cleaned satisfactorily, replace with new ones

Ignition/flame sense electrode replaced

Is the gasket in good condition and correctly positioned?

Sign off on the electrode inspection

WARNING! The boiler contains ceramic fiber materials. Use care when handling these materials per instructions in the FTXL Service Manual. Failure to comply could result in severe personal injury.

Follow the “To Turn Off Gas to Appliance” instructions for the boiler in Section 10 - Startup.

Do not drain the boiler unless it will be exposed to freezing temperatures. If using freeze prevention fluids in the system, do not drain.

Allow time for the boiler to cool to room temperature if it has been firing.

Remove the bezel from the unit.

Remove the screw securing the fan and venturi from the fan plate and set aside.

Remove the nuts securing the fan plate and burner from the heat exchanger plate and set aside.

Loosen the heat exchanger bolts to remove the heat exchanger top plate.

Disconnect the condensate hose from the condensate trap and route to drain.