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General| Model | GDS8 |
|---|---|
| Efficiency Rating | 80% AFUE |
| Heat Exchanger Material | Aluminized Steel |
| Stages | Single-Stage |
| Fuel Type | Natural Gas/Propane |
| Warranty | 10-Year Parts Limited Warranty |
Professional installers must know product safety and related items. Pay special attention to warnings.
Read manual thoroughly, familiarize with specific items like pressure, connections, and venting.
Furnace must be Category I vented. Combustion products must be vented outdoors via a proper system.
Discharge body static electricity before touching unit components to prevent damage.
Follow instructions for GMS/GHS (Horizontal Left/Right/Upflow) or GDS (Downflow) only.
Centrally locate, ensure adequate return air temp, furnace must be level, avoid combustible materials.
Ensure adequate combustion and ventilation air, especially in modern, tight-construction homes.
Furnace must use indoor air for combustion; cannot be a direct vent unit.
Requires two permanent openings communicating with a larger space for adequate air volume.
Openings must communicate via ducts or directly to outdoors, with specific free area requirements.
Furnace must be Category I vented. Do not use Category III venting.
All installations must comply with National Fuel Gas Code (NFPA 54/ANSI Z223.1) and CAN/CSA B149 codes.
Risk of condensation damage with 80% AFUE furnaces vented without dilution air into masonry chimneys.
Chimney must extend 3 ft above roof, 2 ft higher than adjacent structures within 10 ft.
Ensure correct gas type and input rating. Maintain stable supply pressure for reliable ignition.
Use soap solution or gas detector to check for leaks. Never use an open flame.
Explains integrated control module, limits, pressure switches, and flame sensor functions.
Use LED flash codes to assist in diagnosing unit operational problems.
Procedures for resetting the furnace from a lockout condition.
Addresses issues with power, fuse, or internal control module faults.
Covers pressure switch circuit issues or induced draft blower not operating.
Addresses induced draft blower operating but no flame or pressure switch issues.
Relates to primary limit circuit open, possibly due to blocked filters or low blower speed.
Covers flame sensing issues or reversed polarity of 115V power.
