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A blower for a furnace is provided with an exhaust flange having a compressible end portion, and a flexible fitting adapted to receive an exhaust pipe is insertable into an interior of the exhaust flange. A clamp compresses the compressible end portion about the flexible fitting and the exhaust pipe

A blower for a furnace is provided with an exhaust flange having a compressible end portion, and a flexible fitting adapted to receive an exhaust pipe is insertable into an interior of the exhaust flange. A clamp compresses the compressible end portion about the flexible fitting and the exhaust pipe to secure the exhaust pipe to the blower. A drain may be provided adjacent the compressible end portion to remove condensate which may be entrained in the exhaust gases from the exhaust pipe, exhaust fitting and exhaust flange.

대표청구항 ▼

A blower for a furnace is provided with an exhaust flange having a compressible end portion, and a flexible fitting adapted to receive an exhaust pipe is insertable into an interior of the exhaust flange. A clamp compresses the compressible end portion about the flexible fitting and the exhaust pipe

A blower for a furnace is provided with an exhaust flange having a compressible end portion, and a flexible fitting adapted to receive an exhaust pipe is insertable into an interior of the exhaust flange. A clamp compresses the compressible end portion about the flexible fitting and the exhaust pipe to secure the exhaust pipe to the blower. A drain may be provided adjacent the compressible end portion to remove condensate which may be entrained in the exhaust gases from the exhaust pipe, exhaust fitting and exhaust flange. decoding is unsuccessful, and a controller, coupled to said processor, for providing said error parameter and said erasure parameter and for adjusting said error parameter and said erasure parameter when said processor provides said failure indication. 2. The adaptive Reed-Solomon(RS) decoder of claim 1 wherein said controller further increases said error parameter and decreases said era'sure parameter. 3. The adaptive Reed-Solomon(RS) decoder of claim 2 wherein said error parameter is increased by one and said erasure parameter is decreased by two. 4. The adaptive Reed-Solomon(RS) decoder of claim 3 wherein said error parameter is initially set to zero and eventually increased to (n-k)/2, the erasure parameter is initially set to n-k and decreased to zero, and said portion of said code symbols is up to n-k. 5. The adaptive Reed-Solomon(RS) decoder of claim 1 further including a symbol quality generator, coupled to said index register, for providing said location information. 6. The adaptive Reed-Solomon(RS) decoder of claim 5 wherein said symbol quality generator provides said location information to correspond to a list of code symbol locations, said list ordered in accordance with a code symbol quality for each code symbol. 7. The adaptive Reed-Solomon(RS) decoder of claim 6 wherein said symbol quality generator orders said list from a worst to a best code symbol quality and said list includes up to n-k code symbol locations. 8. The adaptive Reed-Solomon(RS) decoder of claim 7 further including a symbol detector, coupled to said symbol quality generator, for providing a channel quality measurement corresponding to each channel symbol. 9. The adaptive Reed-Solomon(RS) decoder of claim 8 wherein said channel quality measurement is used by said symbol quality generator to provide said code symbol quality. 10. The adaptive -Reed-Solomon(RS) decoder of claim 9 wherein said channel quality measurement is an estimated signal-to-noise ratio (SNR) over said each channel symbol. 11. The adaptive Reed-Solomon(RS) decoder of claim 10 wherein said code symbol quality corresponds to a weighted average of said channel quality measurements during a code symbol duration. 12. The adaptive Reed-Solomon(RS) decoder of claim 1 wherein said processor performs said soft decision decoding in accordance with a Euclid's algorithm. 13. An adaptive soft decision receiver for a Reed-Solomon(RS) encoded channel arranged and constructed to demodulate and decode a RS(n,k) encoded symbol stream, the receiver comprising in combination; a symbol detector coupled to the channel for detecting channel symbols and providing a corresponding code symbol stream, a code register, coupled to said symbol detector, for storing a received code word including n code symbols, an index register, coupled to said symbol detector for storing a location information corresponding to a portion of said code symbols, a processor, coupled to said code register and said index register, for performing soft decision decoding using an error parameter and an erasure parameter to provide corrected data when said soft decision decoding is successful and to provide a failure indication when said soft decision decoding is unsuccessful, and a controller, coupled to said processor, for providing said error parameter and said erasure parameter and for adjusting said error parameter and said erasure parameter when said processor provides said failure indication. 14. The adaptive soft decision receiver of claim 13 wherein said controller further increases said error parameter and decrease said erasure parameter. 15. The adaptive soft decision receiver of claim 14 wherein said adjusting includes said error parameter being increased by one and said erasure parameter being decreased by two. 16. The adaptive soft decision receiver of claim 15 wherein said error parameter is initially set to zero and eventually increased to (n-k)/2, the erasure parameter is initially set to n-k and decre