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Modulex Light Commericial Series
CHAPTER 8: Maintenance Schedule
8.13 REASSEMBLY OF THE BURNER MODULES
Follow the instructions to reassemble the burner modules:
1. After the cleaning of the boiler combustion chamber and/or the burners, reposition the
burners in their proper positions.
2. Position the new graphite gaskets on top of each burner module and ensure proper
positioning.
WARNING!
The burner gaskets MUST be replaced at every cleaning.
3. Proceed with reassembly, reversing whichever disassembly operation was chosen (all or
individual method). For individual burner module reassembly (only) skip steps a-d proceed
directly to step e.
a) Lower burner assembly
b) Remove left and right lift pins at front and lift screws at rear.
c) Reinstall gas supply pipe to gas collector flange (4 bolts).
d) Reinstall gas collector tube ends onto boiler frame (2 screws per end).
e) Reinstall bolts "A," "B" and "C" screws to secure burner assembly to boiler body.
NOTE
Tighten the burner bolts with a torque of 13 Nm.
f) Reassemble red hoses to the air intake manifold, place manifold onto the blowers, then
reattach tension spring clip to left and right ends of manifold.
g) Proceed to section 8.14 for final procedures before returning boiler to service.
8.14 FINAL PROCEDURES AFTER MAINTENANCE
Before returning the boiler to service, the following procedures must be performed:
1. Before lighting the boiler make sure the condensate drain pipe has been filled with water
(Figure 8-1).
2. Ensure the seal between the gas supply pipe and the gas collection tube flange are tight. To
do this, open the external gas valve and bubble check for leaks using a soap solution.
3. When a single burner is ignited, check immediately to ensure that the gas valve and the
relevant premixing chamber are operating correctly.
4. Perform the combustion gas analysis and check all parameters (section 4.35).
5. Make sure that all the pressure test nipples, previously opened, have been closed.
OMM-0087_J • GF-143 • 11/17/2020
Reassembling the Burner Modules
Final Procedures after Maintenance
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
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