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General| Model | GUIB090CX50 |
|---|---|
| Type | Gas Furnace |
| Heating Capacity | 90, 000 BTU |
| Efficiency Rating | 80% AFUE |
| Blower Motor | Multi-Speed |
| Fuel Type | Natural Gas |
| Heating Stages | Single Stage |
| Vent Type | Category I |
Step-by-step instructions on what to do in case of a gas leak.
Instructions on how to safely turn off the gas supply to the appliance.
Information on gas supply types, pressures, and piping requirements.
Safety and installation guidelines for propane gas tanks and piping.
General guidelines for electrical wiring, polarization, and grounding.
Typical field wiring diagrams for thermostat connections.
Step-by-step instructions for operating the furnace.
Normal heating sequence for GUIS/GCIS furnaces.
Causes and fixes for abnormal operation in GUIV/WR 50A51-255 systems.
Troubleshooting chart for HSI-2 ignition control issues.
Chart correlating LED flash codes to abnormal operation causes.
Recommended annual inspection points for furnace operation.
Procedure for checking voltage supply to the furnace.
Procedures for checking the transformer and control circuit.
Location and testing procedure for the auxiliary limit control.
Continuation of pressure switch trip points and usage data.
Checking WR 50A50/50A51 and Heatcraft HSI controls.
Checking flame sensor for combustion proof.
Checking radiant sense flame sensor and its components.
Procedure for checking and resizing gas orifices.
Procedure for measuring and adjusting inlet gas supply pressure.
Procedure for measuring and adjusting gas manifold pressure.
Manifold pressure adjustments for propane gas.
Procedure for measuring static pressure of the return and supply ducts.
Caution on adjusting gas manifold pressure.
Procedure for conducting a heating performance test.
Testing and identifying primary limit control styles.
Testing the flame rollout switch for operation.
Necessity of replacing pressure switches and orifices at high altitudes.
Function and testing methods for permanent split capacitor motors.
Testing redundant gas valves for coil resistance.
Checking WR50A52 integrated ignition control module.
Caution regarding inlet gas supply pressure specifications.
Procedure for checking temperature rise across the heat exchanger.
Testing thermostats and their wiring for proper operation.
Procedures for checking blower motors for continuity and ground.
Caution about proper polarization and grounding.
Checking main burners for signs of rust, port condition, and alignment.
Chart for high altitude orifice drill sizes and conversion kits.
Checks to perform if delayed ignition occurs.
Testing hot surface ignitors for resistance and current draw.
Procedures for adjusting gas valve regulators on two-stage furnaces.
Purpose and function of the pressure control safety device.
Warning about electrical shock and proper wiring.
