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General| Model | Modulex MLX-454 |
|---|---|
| Type | Condensing Boiler |
| Input Capacity | 454, 000 BTU/hr |
| Fuel Type | Natural Gas or Propane |
| Heat Exchanger | Stainless Steel |
| Efficiency | 95% |
| Modulation Range | 1:5 |
| Water Connections | 2 inch NPT |
Lists common hand tools and a spark gap feeler gauge needed for maintenance tasks.
Steps to disconnect power, gas, remove covers, and access components for annual maintenance.
Procedure for removing and installing a new spark igniter for each heat module.
Procedure for removing and installing a new flame detector for each heat module.
Tests the automatic shutdown function when a flame detector lead is removed.
Instructions for inspecting and cleaning burner modules and combustion chamber.
Steps for disassembling the unit to access the fan assembly cover and burner components.
Detailed steps for removing burner modules, including dealing with gaskets and grounding tabs.
Procedures for cleaning burner modules, combustion chamber, and flue collector.
Steps for reassembling the unit after burner maintenance, including gasket replacement.
Steps for disconnecting, cleaning, and reassembling the flue collector and its associated parts.
