Clean Heat Exchanger; Review With Owner - Prestige Solo 110 Installation And Maintenance Manual

Maintenance Procedures
4. If the measured flue gas temperature is
higher than 54ºF over the supply water
temperature, shut the boiler down and fol-
low the procedures listed below to clean
the heat exchanger.

Clean Heat Exchanger

1. Shut down the boiler:
- Follow the instructions on Page 40
"To Turn Off Gas to Appliance"
- Do not drain the boiler unless the boil-
er will be subject to freezing condi-
tions.
- Do not drain the boiler if freeze protec-
tion fluid is used in the system.
2. Allow the boiler to cool down to room tem-
perature before servicing.
3. Disconnect the gas piping to the boiler.
4. Remove the mounting nuts securing the
burner plate to the heat exchanger and set
aside.
5. Carefully remove the burner assembly,
burner plate and combustion chamber insu-
lation from the heat exchanger and set
aside. See warning on page 55.
6. Use a vacuum cleaner or compressed air or
water to remove any accumulation from
the heat exchanger flue ways. Do not use
any solvent.
7. Reinstall the burner assembly, burner plate
and combustion chamber insulation onto
the heat exchanger. Ensure the plate gasket
and combustion chamber insulation is in
place and not damaged. See warning on
page 55.
8. Tighten the mounting nuts onto the burner
plate. Do not use excessive force in tight-
ening.
9. Reconnect the gas piping and check for
leaks.
10. Close isolation valves on the boiler water
piping to isolate the boiler from the heating
system.
11. Attach a hose to the boiler drain valve and
flush the boiler thoroughly with fresh
water by using the purge valves to allow
water to enter through the make-up water
line to the boiler.
12. Once the boiler has been completely
flushed, return the boiler and system piping
back to operation.
13. Perform the required startup and checkout
procedures as outlined on pages 37 to 45.

Review With Owner

Ensure the owner understands the impor-
tance to perform the maintenance schedule
specified in this manual.
Remind the owner of the importance to call
a licensed contractor should the unit or sys-
tem exhibit any unusual behavior.
54