Thermo Products MDA1 Furnace Flashen: Essential User Instructions and Safety Guidelines

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

IMPORTANT: Remind homeowner of the importance of monthly filter inspections during operation to ensure maximum efficiency.

VI. Installers Instructions to User

After completing the installation, the installer shall inform and/or demonstrate to the homeowner:

1.The location of these instructions in the furnace and that these instructions and the users information manual must be kept along with instructions for any accessories in the plastic pouch on the inside of the furnace.

2.The location and use of the manual gas shut off valve and furnace electrical disconnect switch. Instruct user to always shut off gas before shutting off electric power.

3.The sequence of operation of the furnace.

4.The correct operation and maintenance of the appliance as outlined in the users information manual.

5.That failure to maintain and operate this furnace in accordance with these instructions could result in hazardous conditions, bodily injury, and property damage and may void the limited warranty on the furnace.

6.Review with and encourage the user to read the warnings and instructions outlined on the front cover and the Safety section of this manual and in the Users Information Manual.

7.Recommend to the user that a CO detector be installed in the living space with the use of any fossil fuel burning appliance. The CO Detector should be one that is design certified by a nationally recognized testing agency.

8.Recommend that the user have a qualified heating contractor inspect the furnace at the start of each heating season. Inform the user of the frequency of inspection required for each item in Section IV of the Users Manual.

9.Inform the user to maintain adequate clearances around air openings into the furnace and not to block or restrict the entrance of air into the furnace area or the furnace air opening.

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Contents Induced Draft Highboy COUNTERFLOW/HORIZONTAL GAS Furnace Section Safety II. Installation Guidelines Page Packaging Shipping DamageSafety II. Installation Guidelines CodesInstallation Location Closet and Alcove InstallationStandard Clearances Refer to FigureNon-combustible Material Plenum Flue or Vent All Models Covered by This ManualAir for Combustion and Ventilation MDA1 Horizontal Installation MDA1 Installed Horizontal Filters/ Filter Installation Duct Work and Air ConditioningUse of Non-Thermo Pride Filter Retention Means Optional Thermo Pride Filter RackFPM FormulaVenting Replacing An Existing Furnace From a Common Vent Carbon Monoxide Poisoning HazardCondensing in the Chimney Page Page Vent Connection to Inducer Inducer Mounting Sidewall Venting Automated Literature FAXHorizontal Size and Lengths for Horizontal Vents Horizontal Size and Length for Sidewall VentingGAS Piping General GAS Piping Fire or Explosion HazardPage Installation of Natural GAS Piping Typical Gas PipingInstallation of Propane GAS Piping Steel Pipe Size for Natural Gas IPSPage Field Wiring and Replacing Wiring ElectricalElectronic Air Cleaner and Humidifier Connections Room ThermostatBlower and Control Panel To delay fan Set Switch Initial StartupWhat to do if YOU Smell GAS To Turn Off Gas To Appliance Adjustment Of Heat Input Rate Page Burner Adjustment Setting Supply Air Temperature Rise Typical Observation of Main Burner FlamesCheckout Procedure Important Remove flue blockage when doneDiagnostic Features LED will also flash once at power-upShut off gas and disconnect power before continuing General InspectionHouse Air Blower Return Air Filter Filter Maintenance ProcedureFilter Replacement VI. Installers Instructions to User Appendix a Sources for Reference Standards Appendix B Sequence of Operations Sequence of Operations for Heating SystemMode of Operation Control System Action Appendix C Troubleshooting Flowcharts Heating SystemYes Is ignitor positioned Correctly? Does system run until thermostat is satisfied? MDA1/MHA1-50S00S4426 Description Part Number QTYAppendix E Replacement Parts List MHA1 Page Replacement Parts List MDA1 Page Appendix F Wiring Diagram Page Appendix G MID-EFFICENCY Furnace Specifications MID-EFFICIENCY Highboy GAS Furnace SPECIFICATIONS5Nominal temp. rise Heating fan speed