Thermo Products MO-425 manual III. Dealer Maintenance

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All installations and services must be performed by qualified service personnel.

For example, if a 13% CO2 (3.5% O2) is measured at a trace of smoke, open the air shutter until a zero smoke reading is obtained with a 12% CO2 or 4.5% O2.

The reason for recommending the lower CO2 setting even though it may result in slightly lower efficiency is it allows the burner to better tolerate uncontrollable variables, such as low oil temperatures, dirty oil, low heating content oil, a cold heat exchanger, and down draft conditions. This operational tolerance means less service and maintenance during heating seasons.

4.FLUE GAS TEMPERATURE: The flue gas temperature will vary to some degree depending on input rate, duct design, and the airflow across the heat exchanger. The suggested minimum NET stack temperature is 350° F, and the maximum stack temperature is 500° F. The lower the stack temperature, the higher the efficiency. However, stack temperatures under 350° F may cause condensation which in turn may lead to metal corrosion.

5.TEMPERATURE RISE: Supply air temperature minus return air temperature. The temperature rise across the furnace (operating at steady state conditions) should be 70°F. A higher temperature rise will slightly lower the efficiency. A lower temperature rise may cause condensing. The supply air temperature should be measured in the supply air trunkline approximately 12 inches down stream of the plenum.

NOTE: Minimum temperature rise is 55°; maximum temperature rise is 85°.

III. DEALER MAINTENANCE

A. TROUBLE SHOOTING:

THIS SECTION IS ONLY TO BE PERFORMED BY TRAINED, QUALIFIED SERVICE PERSONNEL, AND NOT BY THE FURNACE OWNER.

1.Check for 115VAC line supply voltage to the furnace. If there is no supply voltage, check fuses and service switch.

?CAUTION: When testing electrical equipment, always follow standard electrical procedures.

2.Make sure thermostat is calling for burner operation.

3.Check oil supply and make sure all valves are open.

The troubleshooting chart beginning on the following page should help identify the type of malfunction or deviation from normal operation. To use this diagram, just follow the instructions in the boxes. If the answer is yes or the condition is true, go down to the next box. If the answer is no or the condition is false, go to the box on the right. Continue checking and answering questions and conditions in each box until a problem and/or repair is found. After any maintenance or repair, the trouble shooting sequence should be repeated until normal system operation is achieved.

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Contents OIL Furnace Table of Contents Section Beginning NON-COMBUSTIBLE Material General Instructions Read Before Start of InstallationCombustible Material Chimney II. InstallationMAKE-UP AIR Proper Chimney SizePrevention of Chimney Condensing Proper Vent Connector PIPE/CHIMNEY Connection Proper Chimney HeightTight Joints Tight CLEAN-OUT Doors and ConnectionsProper Chimney Bottom Level No Interconnected Chimney FluesReduction of Clearances with Specified Forms of Protection Duct Work Supply air duct sizing Example OIL Filter WiringOIL Tank & Piping Page Initial Burner Operation III. Dealer Maintenance Yes Also Perform CAD Cell Check OUT Procedurerefer to Index YES Is the Nozzle PLUGGING? Replace Burner Effects of Pressure on Nozzle Flow Rate On SHUT-DOWN CAD Cell Checkout ProcedureCleaning or Replacing Flue Pipes On START-UPFollow initial burner operation procedures from section G

MO-425 specifications

The Thermo Products MO-425 is an advanced heating solution designed for both residential and commercial applications. Known for its efficiency and innovative features, the MO-425 stands out in the market for those seeking reliable performance in temperature control.

One of the key characteristics of the MO-425 is its energy efficiency. It utilizes cutting-edge technology that minimizes energy consumption while optimizing heating output. The unit is equipped with a high-efficiency motor that reduces electricity usage, making it an eco-friendly choice for consumers concerned about energy costs and environmental impact.

The MO-425 also boasts a robust construction designed for durability. Made from high-quality materials, the unit is built to withstand the rigors of frequent use while maintaining its performance over time. This reliability is complemented by an advanced heating element that provides consistent warmth, ensuring that users enjoy a comfortable environment regardless of weather conditions.

In terms of controls, the Thermo Products MO-425 features a user-friendly interface, allowing for easy adjustments to temperature settings. The digital thermostat enables precise temperature control, which not only enhances comfort but also contributes to energy savings. Additionally, the unit has programmable features, allowing users to set heating schedules according to their routines, further promoting efficiency.

Another notable feature of the MO-425 is its quiet operation. The design includes sound-dampening technology that reduces noise levels during operation, making it suitable for use in living spaces, offices, and other environments where peace and quiet are essential.

The MO-425 is also versatile, offering multiple installation options to accommodate various spaces. It can be mounted on walls or used as a portable unit, making it adaptable to different room layouts and heating needs. This flexibility ensures that users can find the ideal setup for maximizing warmth and comfort in their environments.

Additionally, the Thermo Products MO-425 is backed by excellent customer support. Users can rely on a robust warranty and access to assistance for any inquiries, ensuring a positive ownership experience.

Overall, the Thermo Products MO-425 is a top-tier heating solution that combines efficiency, durability, and user-friendly features. Whether for residential or commercial use, it addresses the critical needs of modern heat management, making it a valuable addition to any home or workspace.
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