*UD2B060AFV32A
*UD2B080AFV32A
*UD2C080AFV42A
*UD2B100AFV32A
*UD2D120AFV52A
Variable Speed, 2-Stage, 80% Upflow/ Horizontal
Gas-Fired Furnaces, “Fan Assisted Combustion
System” with Whole House Air Cleaner
A341789P08
Installer’s Guide
Upflow/ Horizontal*
For VENT SIZING INFORMATION see:
USA —
National Fuel Gas Code ........ ANSI Z223.1/ NFPA 54 (latest version)
CANADA —
Natural Gas Installation Code ..... CAN/ CGA-B149.1 (latest version)
Propane Installation Code ............ CAN/ CGA-B149.2 (latest version)
USA/ CANADA ALTERNATE —
Category I Venting Guide .......... Pub. No. 18-CH23D1 (latest version)
*Units are BOTTOM RETURN only
Horizontal Conversion for these furnaces
may be left or right side rotation.
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.
*__First letter may be “A” or “T”
Safety signal words are used to designate a degree or level of seriousness associated with a particular hazard. The
signal words for safety markings are WARNING and CAUTION.
a. WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious in-
jury.
b. CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate in-
jury. It is also used to alert against unsafe practices and hazards involving only property damage.
This unit is equipped with an integrated high efficiency
Whole House Air Cleaner. Careful consideration must
be taken in the installation process to avoid personal in-
jury, property damage or equipment damage. These in-
structions do not cover all variations in systems or pro-
vide for every possible contingency. Should further in-
formation be desired or particular problems arise which
are not covered sufficiently by this manual, contact
your local distributor or the manufacturer as listed on
the Furnace nameplate.
In addition, these Furnaces are suitable for installation
in an attic, garage or crawl space with ducted supply
and return air.
18- CD24D1- 2
Available in French Canadian (FC)
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