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Installer’s Guide
High Efficiency Single Stage Upflow/ Horizontal
and Downflow/ Horizontal Gas-Fired Furnaces,
“Fan Assisted Combustion System”
*UD1A040A9H21B *UD1B100A9H31B *DD1B060A9H31B *UD1B060A9H31B *UD1C100A9H51B *DD1B080A9H31B *UD1B080A9H31B *UD1D120A9H51B *DD1C100A9H51B *UD1C080A9H41B *UD1D140A9H51B *DD1D120A9H51B
*__First letter may be “A” or “T”
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — This Document is customer property and is to remain with this unit.
Please return to service information pack upon completion of work.
| For VENT SIZING INFORMATION see: |
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| USA — |
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National Fuel Gas Code | ANSI Z223.1/NFPA 54 (latest version) | |
| CANADA — |
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Natural Gas Installation Code | (latest version) | |
Propane Installation Code | (latest version) | |
| USA/CANADA ALTERNATE — |
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Category I Venting Guide .................................. Pub. No. | ||
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Upflow/ Horizontal* | Downflow/ Horizontal* |
*Horizontal Conversion for these furnaces may be left or right side rotation.
