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TECHNICAL GUIDE

Echelon 

MODELS: FC8T-UH/LC8T-UH

GAS-FIRED
HIGH EFFICIENCY TWO STAGE 
UPFLOW/HORIZONTAL FURNACES

STANDARD & Low NOx 

80% AFUE

NATURAL GAS
40 - 120 MBH INPUT

Due to continuous product improvement, 
specifications are subject to change without notice.

Visit us on the web at www.york.com for the most 
up-to-date technical information.

Additional rating information can be found at 
www.gamanet.org.

EFFICIENCY
RATING
CERTIFIED

ISO 9001

Certified Quality

Management System

246756-CTG-C-0407

FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE

DESCRIPTION

These high efficiency, compact units employ induced com-
bustion, reliable hot surface ignition and high heat transfer
tubular heat exchangers. The units are factory shipped for
installation  in upflow or horizontal applications.
These furnaces are designed for residential installation in a
basement, closet, alcove, attic, recreation room or garage
and are also ideal for commercial applications. All units are
factory assembled, wired and tested to assure safe depend-
able and economical installation and operation.
These units are Category I listed and may be common
vented with another gas appliance as allowed by the
National Fuel Gas Code.

WARRANTY

20-year limited warranty on the heat exchanger.
10-year heat exchanger warranty on commercial applica-
tions.
5-year limited parts warranty.

FEATURES

Two stage heating operation includes:

- Two stage gas valve
- Two stage inducer operation
- Two speed blower operation

Provides increased comfort level & very quiet unit oper-
ation

Adjustable delay timer allows two stage operation with 
single stage thermostat

• Compact, easy to install, ideal height 40" cabinet
• Blower-off delay for cooling SEER improvement.
• Easy to connect power/control wiring.
• Built-in, high level self diagnostics with fault code display.
• Low unit amp requirement for easy replacement applica-

tion.

• Integrated control module for reliable, economical opera-

tion.

• Electronic Hot Surface Ignition saves fuel cost with 

increased dependability and reliability.

• Induced combustion system with inshot main burners for 

quiet, efficient operation.

• 100% shut off main gas valve for extra safety.
• PSC -four speed, direct drive motor with large, quiet 

blower.

• 24V, 40 VA control transformer and blower relay supplied 

for add-on cooling.

• Hi-tech tubular aluminized steel primary heat exchanger.
• Timed on, adjustable off blower capability for maximum 

comfort.

• Solid removable bottom panel allows easy application.
• Easy access from front of unit for cleaning, maintenance 

or service.

• Insulated blower compartment for quiet operation.
• Independent door removal for greater durability and ease 

of access.

• Low NOx models have been designed to meet specific 

code requirements.

• Low NOx models may not be converted to propane unless 

screens are removed.

Summary of Contents for FC8T-UH

Page 1: ...anty on commercial applica tions 5 year limited parts warranty FEATURES Two stage heating operation includes Two stage gas valve Two stage inducer operation Two speed blower operation Provides increased comfort level very quiet unit oper ation Adjustable delay timer allows two stage operation with single stage thermostat Compact easy to install ideal height 40 cabinet Blower off delay for cooling ...

Page 2: ... 18 13 3 8 RATINGS PHYSICAL ELECTRICAL DATA Models Input Cabinet High Low Output BTU H High Low Nominal Airflow Cabinet Width AFUE Blower Blower Size MBH MBH CFM In Hp Amps In FC8T040A12UH11 40 26 32 21 1200 14 1 2 80 0 1 2 7 7 10 x 8 F L C8T060A12UH11 57 42 46 34 1200 14 1 2 80 0 1 2 7 7 10 x 8 F L C8T080A12UH11 80 59 64 48 1200 14 1 2 80 0 1 2 7 7 10 x 8 F L C8T080B16UH11 80 59 64 48 1600 17 1 2...

Page 3: ...1690 1630 1570 1500 1430 1330 Medium 1470 1450 1440 1430 1390 1360 1310 1270 1220 1150 Low 1260 1260 1260 1260 1250 1200 1150 1110 1070 1010 F L C8T080C16UH11 High 2077 1992 1922 1830 1727 1617 1507 1355 1219 1050 Medium 1729 1673 1631 1581 1507 1421 1293 1187 1053 907 Low 1448 1452 1432 1390 1324 1264 1176 1058 939 774 FC8T100B12UH11 High 1700 1620 1560 1480 1390 1300 1210 1110 970 820 Medium Hig...

Page 4: ...B16UH11 Low N A 900 900 890 870 850 800 730 670 560 High 2000 1960 1930 1900 1800 1760 1710 1640 1550 1460 Medium 1440 1440 1430 1420 1400 1380 1340 1300 1220 1150 Low 1220 1230 1230 1230 1200 1190 1170 1160 1110 1050 F L C8T080C16UH11 High 2172 2101 2028 1943 1854 1732 1621 1503 1344 1144 Medium 1640 1633 1626 1584 1518 1480 1378 1276 1125 965 Low 1388 1404 1412 1396 1362 1311 1222 1144 1001 827 ...

Page 5: ...lter manufacturer NOTES 1 Air velocity through throwaway type filters may not exceed 300 feet per minute All velocities over this require the use of high velocity filters 2 Air flows above 1800 CFM require either return from two sides or one side plus bottom RECOMMENDED FILTER SIZES Cabinet Size Side in Bottom in A 16 x 25 14 x 25 B 16 x 25 16 x 25 C 2 16 x 25 20 x 25 FILTER PERFORMANCE PRESSURE D...

Page 6: ...nce 1180 1250 70 CFM 12 m3 min Subtract the total system static from 0 50 w c 125 Pa and divide this difference by the difference in ESP values in the table 0 60 w c 150 Pa 0 50 w c 125 Pa to obtain a percentage 0 58 0 50 0 60 0 50 0 8 Multiply percentage by airflow difference to obtain airflow reduction 0 8 X 70 56 Subtract airflow reduction value to airflow 0 50 w c 125 Pa to obtain actual airfl...

Page 7: ...tion Light E W1 First Stage Heat G Fan G Fan Connection of the C Termainal 24 Volt Common is optional when used with batteries Thermostat Installer Setup Number 1 System Type must be set to 6 2 Heat 2 Cool Conventional R 24 Volt Hot Heat XFMR W2 Second Stage Heat RC 24 Volt Hot Cool XFMR E W1 First Stage Heat G Fan DN22U00124 THERMOSTAT Y2 Second Stage Cool Y2 Second Stage Cool Y First Stage Cool ...

Page 8: ...tion Menu must be set to Heat Pump 2 Set W2 Delay on furnace to OFF HM Humidistat BSG Bonnet Sensor Bonnet Sensor Optional BS Bonnet Sensor W2 Second Stage Auxiliary Heat W2 Second Stage Auxiliary Heat AUX Auxiliary Heat E W1 First Stage Auxiliary Heat E W1 First Stage Auxiliary Heat W Auxiliary Heat Y2 Second Stage Heat Cool Y2 Second Stage Heat Cool Y2 Second Stage Heat Cool Y2 Second Stage Heat...

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