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Rheem Endeavor™ Line Classic® Series Gas Furnaces

Model: R801T

Key Specifications: 80% A.F.U.E.†, Single Stage, Constant Torque, Input Rates: 50-125 kBTU [14.6-36.6 kW], Configuration Options: Upflow/Horizontal

† A.F.U.E. (Annual Fuel Utilization Efficiency) calculated in accordance with Department of Energy test procedures.

Certifications: ISO 9001:2015, cULus Listed, AHRI Certified.

Learn more at ahridirectory.org.

Features & Benefits

PlusOne® Diagnostics: Industry-first, 7-segment LED for quick & easy service.
PlusOne® Ignition System: Proven Direct Spark Ignition (DSI) for reliability and longevity.
Low Profile, 34-inch Cabinet: Makes furnaces ideal for space-constrained installations.
Hemmed Cabinet & Door Edges and Quarter-Turn Door Fasteners (Upflow/Horizontal only): Allows for safe, tool-less access and serviceability.
Removable Heat Exchanger: Built with a primary aluminized steel and secondary stainless steel construction, provides maximum corrosion resistance, thermal fatigue reliability and improved serviceability.
Pre-Marked Hoses: Offers easier identification and installation.
Blower Shelf Design: Ensures serviceability in all furnace orientations.
Replaceable Collector Box: Enables replacement of only the collector box, and doesn't require replacement of the heat exchanger.
Venting with 2 or 3-inch PVC: Offers options that can be used on all furnace heating input sizes.
Self-Priming Condensate Trap: Allows for on-going water saturation within the trap to keep it primed, and eliminates the need for seasonal service on the condensate trap.

Model Number Identification

The model number for Rheem Endeavor™ Line Classic® Series Gas Furnaces follows a specific structure:

R 80 1 T 050 3 A 14 UH S N A S

Component	Description
R	Brand (Rheem)
80	Furnace Efficiency (80% AFUE)
1	Stages of Heating (Single-Stage)
T	Motor Type (Constant Torque)
050	Heating Input (50K BTUH [14.7 kW])
3	AC Max. Capacity (3-ton drive)
A	Major Series (1st Design)
14	Width (14" Width)
UH	Position (Upflow/Horizontal)
S	Controls (Standard)
N	NOx (Non-Comm. / Low NOx)
A	Minor Series (1st Series)
S	Option Code (Standard Grade)

Available Models

R801T0503A14UHSNAS
R801T0754A17UHSNAS
R801T0754A21UHSNAS
R801T1005A21UHSNAS
R801T1255A24UHSNAS
R801T0503A14UHNNAS
R801T0754A17UHNNAS
R801T0754A21UHNNAS
R801T1005A21UHNNAS
R801T1255A24UHNNAS

Standard Equipment

Limit controls
Manual shut-off valve
100% safety lock out
Cool fan off delay
Field selectable heat fan off delay
One hour automatic retry
Power and self test diagnostics
Flame sense current diagnostics
Electronic air cleaner connections
Twinning (built-in) features
Humidifier connections
Low speed continuous fan option
Single speed option for heating and cooling applications
Transformer
Direct drive motor
Multi-speed constant torque blower motor
Solid bottom

WARNING: THIS FURNACE IS NOT APPROVED OR RECOMMENDED FOR USE IN MOBILE HOMES.

Physical Data and Specifications

Upflow Models

MODEL NUMBERS R801T Constant Tq-UH Series	Input-BTU/Hr [kW]	Heating Capacity BTU/Hr [kW]	Heat Ext. Static Pressure [kPa]	Blower (D x W) [mm]	Motor H.P. [W] Type	Min. Circuit Ampacity	Min. Overload Protection Device	Max. Overload Protection Device	Heating Speed	Cooling Speed	Cooling CFM @ Rating Point [L/s]	Max. E.S.P. (In. W.C.) [kPa]	Temperature Rise Range °F [°C]	Max. Outlet Air Temp. °F [°C]	Approx. Shipping Weight (Lbs.) [kg]	AFUE
R801T0503A14UH*NAS	50,000 [15]	40,000 [12]	.18 [.05]	11 x 6 [279 x 152]	1/2 [373] 5 Spd Constant Torque	8	15	15	Med	High	1305 [616]	0.9 [.22]	25-55 [13.9-30.6]	155 [68.3]	110 [50]	80.00%
R801T0754A17UH*NAS	75,000 [22]	60,000 [18]	.20 [.05]	11 x 7 [279 x 178]	1/2 [373] 5 Spd Constant Torque	8	15	15	Med	High	1402 [662]	0.9 [.22]	25-55 [13.9-30.6]	155 [68.3]	125 [57]	80.00%
R801T0754A21UH*NAS	75,000 [22]	60,000 [18]	.20 [.05]	11 x 7 [279 x 178]	3/4 [560] 5 Spd Constant Torque	9	15	15	Med-High	High	1608 [759]	0.9 [.22]	25-55 [13.9-30.6]	160 [71.1]	140 [64]	80.00%
R801T1005A21UH*NAS	100,000 [29]	80,000 [23]	.28 [.07]	11 x 10 [279 x 254]	3/4 [560] 5 Spd Constant Torque	10	15	15	Med	High	1840 [868]	0.9 [.22]	40-70 [22-39]	180 [82.2]	140 [64]	80.00%
R801T1255A24UH*NAS	125,000 [37]	100,000 [29]	.28 [.07]	11 x 10 [279 x 254]	3/4 [560] 5 Spd Constant Torque	11	15	15	Med-High	High	1934 [913]	0.9 [.22]	35-65 [19.4-36.1]	165 [73.8]	150 [68]	80.00%

Horizontal Models

MODEL NUMBERS R801T Constant Tq-UH Series	Input-BTU/Hr [kW]	Heating Capacity BTU/Hr [kW]	Heat Ext. Static Pressure [kPa]	Blower (D x W) [mm]	Motor H.P. [W] Type	Min. Circuit Ampacity	Min. Overload Protection Device	Max. Overload Protection Device	Heating Speed	Cooling Speed	Cooling CFM @ Rating Point [L/s]	Max. E.S.P. (In. W.C.) [kPa]	Temperature Rise Range °F [°C]	Max. Outlet Air Temp. °F [°C]	Approx. Shipping Weight (Lbs.) [kg]	AFUE
R801T0503A14UH*NAS	50,000 [15]	40,000 [12]	.18 [.05]	11 x 6 [279 x 152]	1/2 [373] 5 Spd Constant Torque	8	15	15	Med	High	1305 [616]	0.9 [.22]	25-55 [13.9-30.6]	155 [68.3]	110 [50]	80.00%
R801T0754A17UH*NAS	75,000 [22]	60,000 [18]	.20 [.05]	11 x 7 [279 x 178]	1/2 [373] 5 Spd Constant Torque	8	15	15	Med	High	1402 [662]	0.9 [.22]	25-55 [13.9-30.6]	155 [68.3]	125 [57]	80.00%
R801T0754A21UH*NAS	75,000 [22]	60,000 [18]	.20 [.05]	11 x 7 [279 x 178]	3/4 [560] 5 Spd Constant Torque	9	15	15	Med-High	High	1608 [759]	0.9 [.22]	25-55 [13.9-30.6]	160 [71.1]	140 [64]	80.00%
R801T1005A21UH*NAS	100,000 [29]	80,000 [23]	.28 [.07]	11 x 10 [279 x 254]	3/4 [560] 5 Spd Constant Torque	10	15	15	Med	High	1840 [868]	0.9 [.22]	40-70 [22-39]	180 [82.2]	140 [64]	80.00%
R801T1255A24UH*NAS	125,000 [37]	100,000 [29]	.28 [.07]	11 x 10 [279 x 254]	3/4 [560] 5 Spd Constant Torque	11	15	15	Med-High	High	1934 [913]	0.9 [.22]	35-65 [19.4-36.1]	165 [73.8]	150 [68]	80.00%

NOTES: All models are 115V, 60HZ, 1 Ph. Gas connection size for all models is 1/2" [12 mm] N.P.T.

This furnace does not meet air district requirements of 14 ng/J NOx emissions limit. This furnace is not eligible for the Clean Air Furnace Rebate Program: www.CleanAirFurnaceRebate.com.

This furnace is to be installed for propane firing only in air districts requiring 14 ng/J NOx emission limits. Operating in natural gas mode is in violation of these Rules.

[ ] Designates Metric Conversions

Dimensional Data

Upflow Application

Diagram illustrating the Upflow Application of the Rheem Endeavor™ gas furnace. It shows the unit from the BOTTOM view, indicating the RETURN AIR intake. The TOP view shows the SUPPLY AIR outlet. Side views (LEFT SIDE, RIGHT SIDE) and FRONT view detail connection points for GAS CONNECTION, LINE VOLTAGE ELECTRICAL CONNECTION, and LOW VOLTAGE ELECTRICAL CONNECTION. Key dimensions are labeled A, B, C, D, E, and F, with corresponding metric conversions in brackets. Minimum clearance requirements are also indicated.

MODEL R801T-	A	B	C	D	E	F	MINIMUM CLEARANCE (IN.) [mm]					SHIP WGTS. (LBS.) [kg]
							LEFT SIDE	RIGHT SIDE	BACK	TOP	FRONT	VENT
050	14 [356]	1227/32 [326]	105/8 [270]	111/2 [292]	17/8 [48]	0	4 [102]	0	1 [25]	3 [76]	6 [152]	110 [50]
075417	171/2 [445]	1611/32 [415]	123/8 [314]	151/2 [381]	21/2 [64]	0	3 [76]	0	1 [25]	3 [76]	6 [152]	125 [57]
075421/100	211/2 [533]	1927/32 [504]	141/8 [359]	181/2 [470]	21/2 [64]	0	0	0	1 [25]	3 [76]	6 [152]	140 [64]
125	241/2 [622]	2311/32 [593]	157/8 [403]	221/2 [559]	21/2 [64]	0	0	0	1 [25]	3 [76]	6 [152]	150 [68]

NOTES: May require a 3" [76 mm] to 4" [102 mm] or 3" [76 mm] to 5" [127 mm] adapter. May be 0" [0 mm] with type B vent. May be 1" [25 mm] with type B vent.

Furnaces must be vented in accordance with the National Fuel Gas Code, ANSI Z223.1 and in accordance with local codes.

[ ] Designates Metric Conversions

Horizontal Application

Diagram illustrating the Horizontal Application of the Rheem Endeavor™ gas furnace. It shows the unit from the SUPPLY AIR side and RETURN AIR side. The FRONT view details connection points for GAS CONNECTION, LINE VOLTAGE ELECTRICAL CONNECTION, and LOW VOLTAGE ELECTRICAL CONNECTION. Key dimensions are labeled A, B, C, D, E, and F, with corresponding metric conversions in brackets. Minimum clearance requirements are also indicated. A warning is present stating the furnace is not approved for installation on its back with access doors facing upwards.

MODEL R801T	A	B	C	D	E	F	MINIMUM CLEARANCE (IN.) [mm]
							SUPPLY AIR SIDE	RETURN AIR SIDE	BACK	TOP	FRONT	VENT
050	14 [356]	1227/32 [326]	105/8 [270]	111/2 [292]	17/8 [48]	4 [102]	4 [102]	0	1 [25]	3 [76]	6 [152]	110 [50]
075417	171/2 [445]	1611/32 [415]	123/8 [314]	151/2 [381]	21/2 [64]	3 [76]	3 [76]	0	1 [25]	3 [76]	6 [152]	125 [57]
075421/100	211/2 [533]	1927/32 [504]	141/8 [359]	181/2 [470]	21/2 [64]	0	0	0	1 [25]	3 [76]	6 [152]	140 [64]
125	241/2 [622]	2311/32 [593]	157/8 [403]	221/2 [559]	21/2 [64]	0	0	0	1 [25]	3 [76]	6 [152]	150 [68]

NOTES: May require a 3" [76 mm] to 4" [102 mm] or 3" [76 mm] to 5" [127 mm] adapter. May be 0" [0 mm] with type B vent. May be 1" [25 mm] with type B vent.

Furnaces must be vented in accordance with the National Fuel Gas Code, ANSI Z223.1 and in accordance with local codes.

[ ] Designates Metric Conversions

Blower Performance Data

Air Flow Performance - 80% Single Stage Upflow/ Horizontal Constant Torque

INPUT [BTU] CABINET WIDTH [IN]	AIRFLOW CONTROL SETTINGS	SPEED TAP/ WIRE COLORS	CFM AIR DELIVERY EXTERNAL STATIC PRESSURE INCHES WATER COLUMN
INPUT [BTU] CABINET WIDTH [IN]	AIRFLOW CONTROL SETTINGS	SPEED TAP/ WIRE COLORS	0.1	0.2	0.3	0.4	0.5	0.6	0.7	0.8	0.9	1.0
50K 14"	Factory Setting Fan	Low/Red	915	777	674	598	541	498	460	419	370	304
	Cool	Medium Low/ Yellow	963	894	834	781	733	689	646	602	555	504
	Heat or Heat/Cool	Medium/ Purple	997	976	947	911	870	825	779	732	687	646
	Cool	Medium High/ Blue	1123	1130	1121	1101	1071	1036	997	957	920	888
75K 17"	Cool	High/Black	1246	1244	1232	1211	1185	1154	1121	1087	1054	1024
	Factory Setting Cooling	Low/Red	967	916	865	814	763	712	661	610	558	505
	Factory Setting Fan	Medium Low/ Yellow	1206	1147	1087	1027	966	905	843	783	722	662
	Cool	Medium/ Purple	1301	1260	1214	1164	1111	1058	1005	955	910	870
	Heat or Heat/Cool	Medium High/ Blue	1413	1369	1324	1277	1216	1174	1132	1088	1043	998
75K 21"	Cool	High/Black	1590	15568	1530	1486	1437	1387	1342	1303	1276	1265
	Factory Setting Cooling	Low/Red	1216	1174	1132	1088	1043	998	952	905	858	811
	Factory Setting Fan	Medium Low/ Yellow	1314	1271	1229	1188	1147	1105	1063	1019	974	926
	Cool	Medium/ Purple	1400	1356	1315	1276	1239	1200	1161	1120	1076	1027
	Heat or Heat/Cool	Medium High/ Blue	1605	1598	1548	1499	1449	1400	1365	1333	1303	1285
100K 21"	Cool	High/Black	1796	1746	1698	1652	1606	1561	1515	1469	1422	1374
	Factory Setting Cooling	Low/Red	1233	1162	1091	1018	944	869	793	716	637	565
	Factory Setting Fan	Medium Low/ Yellow	1348	1289	1229	1168	1106	1044	982	920	859	799
	Cool	Medium/ Purple	1465	1409	1353	1296	1239	1183	1128	1073	1019	965
	Heat or Heat/Cool	Medium High/ Blue	1658	1607	1557	1507	1457	1407	1358	1308	1260	1212
125K 24"	Cool	High/Black	1758	1710	1663	1616	1569	1522	1475	1428	1380	1334
	Factory Setting Cooling	Low/Red	1216	1138	1061	986	914	844	778	715	657	601
	Factory Setting Fan	Medium Low/ Yellow	1649	1598	1548	1499	1449	1400	1351	1302	1252	1201
	Cool	Medium/ Purple	1796	1746	1698	1652	1606	1561	1515	1469	1422	1374
	Heat or Heat/Cool	Medium High/ Blue	1878	1828	1781	1735	1691	1647	1604	1560	1516	1470
	Cool	High/Black	1943	1893	1846	1801	1757	1714	1673	1631	1589	1547

Accessories

Filter Rack Sizes:

MODEL	RXGF-CB (UPFLOW/ HORIZONTAL)	RXGF-CD (UPFLOW) SIDE RETURN
R801TA050	121/4 x 25 [311 x 635]	153/4 x 25 [400 x 635]
R801TA075417	153/4 x 25 [400 x 635]	153/4 x 25 [400 x 635]
R801TA075421/ R801TA100	191/4 x 25 [489 x 635]	153/4 x 25 [400 x 635]
R801TA125	223/4 x 25 [578 x 635]	153/4 x 25 [400 x 635]

4" FLUE ADAPTER: RXGW-C01

Indoor Coil Casings:

RXBC-D14AI
RXBC-D17AI
RXBC-D21AI
RXBC-D21BI
RXBC-D24AI

WARNING: A SOLID METAL BASE PLATE (SEE TABLE) MUST BE IN PLACE WHEN THE FURNACE IS INSTALLED WITH SIDE AIR RETURN DUCTS. FAILURE TO INSTALL A BASE PLATE COULD CAUSE PRODUCTS OF COMBUSTION TO BE CIRCULATED INTO THE LIVING SPACE AND CREATE POTENTIALLY HAZARDOUS CONDITIONS.

For High Altitudes

OPTION CODE FOR HIGH ALTITUDE: U.S. None required for high altitudes.

HIGH ALTITUDE CONVERSION KITS: U.S. None required for high altitudes.

80+ HIGH ALTITUDE INSTRUCTIONS: CAUTION: Always follow National Fuel Gas Code (NFGC) guidelines when converting for high altitudes. High altitude option codes are not required for these models. However, the burner orifice size needs to be recalculated and verified at elevations above 2000 ft. See Installation Instructions for more information.

[ ] Designates Metric Conversions

General Terms of Limited Warranty

Rheem will furnish a replacement for any part of this product which fails in normal use and service within the applicable period stated, in accordance with the terms of the limited warranty.

*For complete details of the Limited and Conditional Warranties, including applicable terms and conditions, contact your local contractor or the Manufacturer for a copy of the product warranty certificate.

Item	Warranty Period
Conditional Parts (Registration Required)	Ten (10) Years
Heat Exchanger	Twenty (20) Years

Before proceeding with installation, refer to installation instructions packaged with each model, as well as complying with all Federal, State, Provincial, and Local codes, regulations, and practices.

© 2022 Rheem Manufacturing Company. Rheem trademarks owned by Rheem Manufacturing Company. In keeping with its policy of continuous progress and product improvement, Rheem reserves the right to make changes without notice.

Rheem Heating, Cooling & Water Heating • 5600 Old Greenwood Road • Fort Smith, Arkansas 72908 • www.rheem.com

FORM NO. G11-662 REV. 1

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Rheem Endeavor™ Line Classic® Series Gas Furnaces

Features & Benefits

Model Number Identification

Available Models

Standard Equipment

Physical Data and Specifications

Upflow Models

Horizontal Models

Dimensional Data

Upflow Application

Horizontal Application

Blower Performance Data

Accessories

For High Altitudes

General Terms of Limited Warranty

References

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