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General| Series | 90RS12EHS |
|---|---|
| Model Number | 90RS12EHS |
| Category | Furnace |
| Configuration | Upflow/Horizontal |
| Efficiency | 90% AFUE |
| Input BTU | 120, 000 |
| Output BTU | 108, 000 |
| Stages | Single Stage |
| Ignition | Hot Surface Ignition |
| Fuel Type | Natural Gas |
| Vent Type | Direct Vent |
| Warranty | 10-Year Limited Warranty |
Provides critical safety warnings and precautions for furnace installation and operation.
Requirements for providing adequate combustion and ventilation air for furnace operation.
Guidelines and procedures for installing vent pipes, including non-direct and alternate terminations.
Specific installation requirements for direct vent systems, including piping, terminations, and kits.
Information on natural gas and LP gas requirements, conversion kits, and safety precautions for gas supply.
Guidelines for installing gas piping according to local codes, including pipe sizing, shut-off valves, and drip legs.
Critical safety warnings regarding electrical connections, grounding, and safety switches.
Details on high altitude conversion kits, their contents, and application for specific furnace models.
Procedure for checking air flow correctness by measuring temperature rise across the heat exchanger.
Troubleshooting steps for furnace start-up issues related to the Integrated Furnace Control (IFC).
Diagnosing problems during the ignition trial phase, including spark and flame sensing issues.
