The Intertherm Furnace is a high-efficiency residential heating system designed for reliable performance in various home environments. This manual covers installation, operation, maintenance, and troubleshooting for Intertherm furnace models including M1MB, MGHA, and MGHB series. Below are key sections for safety guidelines, technical specifications, installation procedures, operation instructions, maintenance schedules, and troubleshooting guides.
Important safety precautions for installation, operation, and maintenance of Intertherm furnaces.
| Warning Type | Description |
|---|---|
| Fire Hazard | Keep combustible materials away from furnace |
| Carbon Monoxide | Ensure proper venting to prevent CO buildup |
| Electrical Shock | Disconnect power before servicing |
| Burn Hazard | Surfaces may be hot during operation |
| Gas Leaks | Check for leaks with soap solution before operation |
Proper installation procedures for Intertherm furnaces.
WARNING! Installation must be performed by qualified HVAC technician only.
How to properly operate your Intertherm furnace.
NOTE: Allow 5-minute delay between shutdown and restart cycles.
Regular maintenance schedule and procedures.
| Maintenance Item | Frequency | Procedure |
|---|---|---|
| Air Filter | Monthly | Replace or clean as needed |
| Burner Inspection | Annually | Check for proper flame pattern |
| Heat Exchanger | Annually | Inspect for cracks or damage |
| Blower Motor | Annually | Lubricate if required |
| Vent System | Annually | Check for obstructions |
Wiring diagrams and electrical connection requirements.
CAUTION! Incorrect wiring can damage furnace and void warranty.
Proper venting installation for safe operation.
Common problems and solutions for Intertherm furnaces.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| No heat | Thermostat setting, power, gas valve | Check thermostat, circuit breaker, gas supply |
| Furnace not starting | Limit switch, pressure switch | Reset switches, check for obstructions |
| Blower not running | Motor, capacitor, wiring | Check motor, replace capacitor, inspect wiring |
| Frequent cycling | Dirty filter, thermostat location | Replace filter, relocate thermostat |
| Unusual noises | Loose parts, motor bearings | Tighten components, lubricate or replace motor |
Common replacement parts for Intertherm furnaces.
Intertherm furnace warranty coverage and terms.
Heat Exchanger: Limited lifetime warranty
Parts: 5-year limited warranty
Labor: 1-year limited warranty
Registration: Must register within 60 days of installation
For warranty service, contact authorized Intertherm dealer with proof of purchase and installation date.