Do you have a question about the Intertherm M1B Series and is the answer not in the manual?
Crucial safety warnings for fire, explosion, and gas leaks.
Designates hazards, potential injury, or death if warnings are ignored.
Compliance with local building codes and national fuel gas standards.
Details owner's responsibilities regarding furnace setup and maintenance.
Specifies required distances from combustible materials for safe installation.
Guidelines for placing the furnace for optimal operation and access.
Proper setup for return air to prevent hazards and ensure airflow.
Guidelines for designing supply duct systems for effective air distribution.
Precise steps for creating floor openings for duct connectors and gas lines.
Method for installing standard duct connectors for supply air.
Procedure for installing round duct connectors, including alternate methods.
Steps for placing and securing the furnace unit into its designated location.
How to choose the correct roof jack based on ceiling cavity and roof slope.
Specific notes on using different roof jack types and extensions.
Steps for precise placement and cutting of openings for the roof jack.
Detailed procedure for mounting the roof jack assembly and ensuring a watertight seal.
Specific instructions for installing venting systems in manufactured homes.
Guidelines and warnings for connecting the furnace to the main power supply.
Step-by-step instructions for making line voltage electrical connections.
Procedures for connecting the thermostat and low-voltage control circuits.
How to check and adjust the thermostat's heat anticipator setting.
Critical information on grounding the furnace for electrical safety.
Warnings and procedures for safe gas piping installation and leak testing.
Key considerations for gas piping placement, materials, and shut-off valves.
How to perform leak checks on all gas connections using a soap solution.
Recommended practices for installing oil tanks and associated piping systems.
Instructions for connecting single-line and two-line oil systems, including bleeding.
Procedure to remove air from the oil supply line for proper burner operation.
Steps for priming oil burners and converting the furnace for propane gas.
Essential safety precautions and checks before initial furnace lighting.
Guidelines for the first lighting and operation of the furnace.
Instructions for starting and operating direct ignition furnaces.
Steps for starting and operating gas gun furnaces.
Procedures for checking and adjusting burner settings and gas pressure.
How to measure and ensure proper temperature rise for efficient operation.
Importance of adequate combustion air for safe and efficient furnace operation.
Operating instructions for oil gun furnaces with Honeywell or Beckett controls.
Details on oil gun electrode adjustment and switching ignition controls.
Explains the furnace power switch and high-temperature safety limit switches.
Describes the delay feature for the blower fan after cooling mode is satisfied.
Diagnosing issues with ignitors, gas valves, and lack of gas flow.
Troubleshooting burner motor not running, no flame, or insufficient heat.
Steps to diagnose why the circulation blower isn't operating correctly.
Interpreting LED indicators and resetting controls for oil furnaces.
Diagnosing burner lockouts, cad cell resistance, and flame sensing problems.
Explains status codes indicated by LEDs on control modules for different furnace series.
Routine cleaning and checks for homeowners to ensure furnace efficiency.
Periodic service tasks for qualified technicians to maintain furnace performance.
Specific maintenance procedures for oil-fired furnaces, including nozzle and filter replacement.
Table detailing model numbers, input/output, orifice sizes, and motor HP.
Table showing orifice size adjustments for installations at various altitudes.
Guide for selecting blower speeds when using add-on air conditioning.
Data on gas flow rates based on meter revolution time and cubic feet per hour.
Tables detailing black iron gas pipe capacity based on size and length.
Detailed wiring diagram for M1M series furnaces, including control and blower connections.
Explains status codes indicated by LEDs on M1M series control modules.
Wiring diagram for M1B and M5S series gas and oil furnaces.
Checklist items for verifying correct electrical connections and settings.
Checklist items for gas type, pressure, pipe leaks, and altitude deration.
Checklist items for ensuring adequate air supply and proper venting.
| Input BTU | 40, 000 - 120, 000 BTU/h |
|---|---|
| Efficiency | 80% AFUE |
| Heat Exchanger | Aluminized Steel |
| Fuel Type | Gas |
| Thermostat Compatibility | Standard |
| Warranty | Limited Lifetime Heat Exchanger |
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