LP-719 Rev. 000 Rel. 000 Date 6.25.20
82
WARNING
!
DANGER
!
When servicing is complete, make sure the siphon cap and
retaining clip are replaced securely. The condensate trap assembly
MUST BE PROPERLY INSTALLED according to these instructions
when operating the boiler. Operating the boiler without the
condensate trap assembly will cause flue gases to leak and result in
serious personal injury or death.
Do not install the condensate assembly if a component is lost or
missing. Replace the entire assembly. Failure to follow this warning
could result in property damage, serious personal injury, or death.
CAUTION
It is very important that the condensate piping be no smaller than
¾”. To prevent sagging and maintain pitch, condensate piping
should be supported with pipe supports, and pitched ¼” per foot
to allow for proper drainage.
The condensate line must remain unobstructed, allowing free
flow of condensate. If condensate freezes in the line, or if line is
obstructed in any other manner, condensate can exit from the tee,
resulting in potential water damage to property.
Ensure the boiler and CH and DHW heating systems have
been drained following the instructions in this manual BEFORE
attempting to remove the CH or DHW filters. Failure to do so could
result in property damage, serious personal injury, or death.
WARNING
!
Water drained from the boiler could be scalding hot. Wait for the
boiler to cool before draining water, and take precautions when
draining water. Failure to do so could result in property damage,
personal injury, or death.
2. Remove the flow meter cap (2).
6. If a condensate neutralizer kit is installed, check the assembly
when cleaning the condensate trap, and replenish the
limestone chips if necessary. When replacing the limestone
chips, take care to ensure chips are no smaller than ½” to avoid
blockage in condensate piping.
7. Check condensate piping for sagging and/or leakage. Repair
any sags or leaks before restoring power to the boiler.
8. If the boiler has a condensate pump, ensure the pump operates
properly before considering maintenance complete.
Cleaning the DHW Filter (Combi Models ONLY)
1. Remove the clip on the flow meter (1).
5. Clean the filter with a toothbrush and clean running water.
6. Reinstall the DHW inlet filter.
7. Refill the DHW circuit following the filling and purging
instructions in this manual.
8. Restore gas and power to the boiler.
Figure 84 - Removing the DHW Filter
D. Replacing Components
DANGER
!
Failure to replace a damaged sealing ring will result in exhaust gas
leaks, substantial property damage, severe personal injury, or death.
At any point in time over the boiler’s service life it may be necessary
to replace boiler components. If the boiler displays an error message,
determine its cause and possible remedies.
If the remedy is replacement of a component, ensure:
1. That the boiler is powered OFF. Press the ON/OFF button to turn
the boiler off. Then turn the main electrical power to the boiler
off at the circuit breaker.
2. The boiler electrical connection is connected properly. A loose
electrical connection could the root cause of problems.
3. The front cover has been removed.
4. The main shutoff gas valve is closed.
5. All water valves to and from the boiler (supply, return, inlet,
outlet) are closed.
6. If necessary, the water has been drained from the boiler and/or
appropriate circuit.
7. No water can get into the display / control panel.
Replacing the Burner
1. Remove the front cover and pivot the electronic housing
following the instructions described in
Removing the Cabinet
Cover and Inspecting the Boiler.
2. Remove the combustion assembly as described in
Cleaning
the Heat Exchanger Combustion Chamber.
3. Remove, inspect, and replace the burner as described in
Checking the Burner.
4. Replace all damaged seals that are damaged or showing signs
of wear.
5. Proceed in the reverse order to reinstall the components.
3. Remove the flow meter turbine (3).
4. Remove and clean the filter (4).