
Downflow/Horizontal
Two-stage Condensing
Gas-Fired Furnace
XL 90
TDX060,080,100,120R-V
Direct Vent with Variable Speed Inducer
PUB. NO. 22-1706-01-0400 (EN)

General
Features
Natural Gas Models
Central heating furnace designs are
certified by the American Gas Association
for both natural and L.P. gas. Limit setting
and rating data were established and
approved under standard rating
conditions using American National
Standards Institute standards.
Safe Operation
The Integrated System Control has solid
state devices, which continuously monitor
for presence of flame, when the system
is in the heating mode of operation. Dual
solenoid combination gas valve and
regulator provide extra safety.
Quick Heating
Durable, cycle tested, heavy gauge
aluminized steel heat exchanger
quickly transfers heat to provide warm
conditioned air to the structure. Low
energy power vent blower, to increase
efficiency and provide a positive discharge of gas fumes to the outside.
Burners
Multi-port In-shot burners will give years
of quiet and efficient service. All models
can be converted to L.P. gas without
changing burners.
Integrated System Control
Exclusively designed operational
program provides total control of furnace
limit sensors, blowers, gas valve, flame
control and includes self diagnostics for
ease of service. Also contains connection points for E.A.C./humidifier.
Condensate Drain
Built-in trap which can drain from either
side when the furnace is installed upflow.
Air Delivery
The variable speed, direct drive blower
motor, has sufficient airflow for most
heating and cooling requirements, will
switch from heating to cooling speeds on
demand from room thermostat. The
blower door safety switch will prevent or
terminate furnace operation when the
blower door is removed.
Secondary Heat Exchanger
The XL 90 has a special type 29-4C™
stainless steel secondary heat exchanger to reclaim heat from flue gases
which would normally be lost outside.
Styling
Heavy gauge steel and “wrap-around”
cabinet construction is used in the
cabinet with baked-on enamel finish for
strength and beauty. The heat exchanger
section of the cabinet is completely lined
with foil faced fiberglass insulation. This
results in quiet and efficient operation
due to the excellent acoustical and
insulating qualities of fiberglass. Built-in
bottom pan and alternate bottom, left or
right side return air connection provision.
Features And General Operation
The XL 90 High Efficiency Gas Furnaces
employ an Adaptive Silicon Nitride Hot
Surface Ignition system, which eliminates the waste of a constant burning
pilot. The integrated system control lights
the main burners upon a demand for
heat from the room thermostat. Complete
front service access.
a. Low energy power venter.
b. Vent proving pressure switch.
©American Standard Inc. 2000 2 22-1706-01-0400 (EN)

Contents
Feature Summary 2
Features and Benefits 4
Standard Equipment 4
Optional Equipment 5
General Data 6
TDX060R936V 6
TDX080R942V 6
TDX100R948V 6
TDX120R960V 6
Performance Data 7
Electrical Data 9
Field Wiring 10
Dimensions 14
22-1706-01-0400 (EN) 3

Features and
Benefits
XL 90 STANDARD EQUIPMENT
• Direct or nondirect vent application
• Convertible to horizontal on left side
• Power supply 115/1/60
• 2-stage gas valve
• Variable speed inducer motor
• Adaptive Silicon Nitride hot surface
igniter
• Integrated system control
• Heavy gauge aluminized steel heat
exchanger
• Blower door safety switch
• Multi-port In-shot burners
• Alternate bottom/left/right return air in
vertical position
• Slide-out blower assembly
• Direct drive, 4 speed motors
• Adjustable fan off times
• Single pipe venting
• Cleanable high velocity filters
• Heavy gauge reinforced wrap-around
steel cabinet
• Super quiet performance
• Complete front service access
• Optional L.P. conversion kit
• Left/right gas connection
• Limited lifetime warranty on primary
and secondary heat exchangers to
original owner
• One-year parts warranty
• Three-year warranty on integrated
control and hot surface igniter
4 22-1706-01-0400 (EN)

Features and
Benefits
XL 90 OPTIONAL EQUIPMENT
Thermostat, Mechanical 2-Stage Heating/1-Stage Cooling .................................................................................... BAYSTAT241 [ ]
Thermostat, Mechanical Heating Only With Fan Switch........................................................................................... BAYSTAT303 [ ]
Thermostat, Heating/Cooling Single Stage (Mounts Horizontally) ............................................................................... AY28X092 [ ]
Thermostat, Heating/Cooling Single Stage (Mounts Vertically) ............................................................................... BAYSTAT305 [ ]
Thermostat, Electronic Programmable 2-Stage Heating/2-Stage Cooling ............................................................BAYSTAT302B [ ]
Thermostat, Electronic Programmable 1-Stage Heating/1-Stage Cooling .............................................................. BAYSTAT300 [ ]
Propane Conversion Kit ....................................................................................................................................... BAYLPKT210A [ ]
Electronic Air Filter, “Perfect Fit” Super Efficiency (17-1/2" Wide Gas Furnace) ..................................................... TFE175A9FR0 [ ]
Electronic Air Filter, “Perfect Fit” Super Efficiency (21" Wide Gas Furnace) ........................................................... TFE210A9FR0 [ ]
Electronic Air Filter, “Perfect Fit” Super Efficiency (24-1/2" Wide Gas Furnace) ..................................................... TFE245A9FR0 [ ]
Electronic Air Filter, “Perfect Fit” High Efficiency (17-1/2" Wide Gas Furnace) .......................................................TFM175A9FR0 [ ]
Electronic Air Filter, “Perfect Fit” High Efficiency (21" Wide Gas Furnace) ............................................................. TFM210A9FR0 [ ]
Electronic Air Filter, “Perfect Fit” High Efficiency (24-1/2" Wide Gas Furnace) .......................................................TFM245A9FR0 [ ]
Electronic Air Filter, “Perfect Fit” Standard Efficiency (17-1/2" Wide Gas Furnace) ................................................ TFP175A9FR0 [ ]
Electronic Air Filter, “Perfect Fit” Standard Efficiency (21" Wide Gas Furnace) ...................................................... TFP210A9FR0 [ ]
Electronic Air Filter, “Perfect Fit” Standard Efficiency (24-1/2" Wide Gas Furnace) ................................................ TFP245A9FR0 [ ]
Coil Enclosure (17-1/2" Wide Cabinets) ................................................................................................................. BAYCLE1700 [ ]
Coil Enclosure (21" Wide Cabinets) ....................................................................................................................... BAYCLE2100 [ ]
Coil Enclosure (24-1/2" Wide Cabinets) ................................................................................................................. BAYCLE2400 [ ]
Downflow Subbase ................................................................................................................................................ BAYBASE205 [ ]
High Altitude Switch (060) ...................................................................................................................................... BAYHALT245 [ ]
High Altitude Switch (080,100) ............................................................................................................................... BAYHALT246 [ ]
High Altitude Switch (120) ...................................................................................................................................... BAYHALT247 [ ]
Concentric Vent Termination ................................................................................................................................ BAYVENT100A [ ]
Sidewall Vent Termination .................................................................................................................................... BAYVENT200B [ ]
Manufactured/Mobile Home Kit ...........................................................................................................................BAYMFGH100A [ ]
22-1706-01-0400 (EN) 5