KFUH ECO2S®

High Air Velocity Unit Heater
kW Range: 3.8–70 kW
Voltage: 208V / 240V / 480V
Phase: 1Ø / 3Ø
Mounting: Horizontal or Vertical Mount
Control: 24V Control, 2 Stage Thermostat Compatible on 2S Models
Motor: ECM Electronically Controlled Motor
Warranty: 5-Year Limited

Submittal Instructions

Overview

High air velocity electric unit heater with ECM motor, 24V control, and optional 2 stage energy saving heating for high ceiling and large volume applications.

The KFUH ECO2S high air velocity unit heater is engineered to move large volumes of heated air efficiently in spaces with high ceilings, long throws, and demanding heat distribution requirements. Ideal for warehouses, parking garages, loading docks, industrial facilities, and commercial buildings, the KFUH ECO2S features an ECM motor, dual inlet industrial blower, heavy duty open coil element, and ductable intake and outlet connections. Select 2S models provide 2 stage energy saving heating when paired with a 2 stage 24V thermostat, helping improve comfort and reduce energy use in large open spaces.

Ideal Spaces

Warehouses
Parking garages
Loading docks
Industrial facilities
Commercial buildings
High ceiling spaces

Features & Benefits

ECM motor for efficient air movement
2 stage energy saving heating on 2S models with compatible 24V thermostat
High velocity air distribution for high ceiling spaces
Dual inlet industrial blower
Ductable intake and outlet
24V control with fan only relay
Replaceable intake filter
Seattle Energy Code compliant

Models

Ordering Information - Single Phase

MODEL	KW	BTUH	PHASE	VOLTS	AMPS	STAGE 1	STAGE 2	ELEMENTS	**THERMOSTAT CONTROL VOLTAGE	MOTOR HP	CFM RANGE	TEMP. RISE RANGE (F)	EFFECTIVE AIR THROW	*SIZE	WT. (lbs.)	REVIT	Purchase
KFUH2004-1-ECM	3.8	12,799	1	208	18.3	4 kW	**N/A	1	24	1/3HP	708 - 1536	18-Aug	75ft.	Fig. A	57	Revit	Buy Now Close
KFUH2005-1-ECM	5	17,065	1	208	24	5 kW	**N/A	1	24	1/3HP	708 - 1536	22-Oct	75ft.	Fig. A	57	Revit	Buy Now Close
KFUH2008-1-2S1-ECM	8	27,304	1	208	38.5	4.25 kW	3.75 kW	2	24	1/3HP	708 - 1536	16 - 36	75ft.	Fig. A	57	Revit	Buy Now Close
KFUH2010-1-2S1-ECM	10	34,130	1	208	48.1	5 kW	5 kW	2	24	1/3HP	708 - 1536	21 - 45	75ft.	Fig. A	65	Revit	Buy Now Close
KFUH2012-1-2S1-ECM	11.5	39,238	1	208	55.3	7.5 kW	4 kW	3	24	1/3HP	708 - 1536	25 - 54	75ft.	Fig. A	74	Revit	Buy Now Close
KFUH2015-1-2S1-ECM	15	51,195	1	208	72.1	10 kW	5 kW	3	24	1/3HP	708 - 1536	31 - 67	75ft.	Fig. A	74	Revit	Buy Now Close
KFUH2018-1-2S1-ECM	17.3	58,874	1	208	83.2	8.65 kW	8.65 kW	4	24	1/3HP	708 - 1536	35 - 77	75ft.	Fig. B	74	Revit	Buy Now Close
KFUH2020-1-2S1-ECM	20	68,260	1	208	96.2	10 kW	10kW	4	24	1/2HP	1258 - 1771	36- 50	90ft.	Fig. B	76	Revit	Buy Now Close
KFUH2025-1-2S1-ECM	25	85,325	1	208	120.2	15 kW	10 kW	5	24	1/2HP	1258 - 1771	45 - 63	90ft.	Fig. B	81	Revit	Buy Now Close
KFUH2030-1-2S1-ECM	30	102,390	1	208	144.2	20 kW	10 kW	6	24	3/4HP	1592 - 2142	44 - 60	110ft.	Fig. B	85	Revit	Buy Now Close
KFUH2404-1-ECM	4	13,652	1	240/208*	16.7 / 14.4*	4 kW	**N/A	1	24	1/3HP	708 - 1536	18-Aug	75ft.	Fig. A	57	Revit	Buy Now Close
KFUH2405-1-ECM	5	17,065	1	240/208*	20.8 / 18*	5 kW	**N/A	1	24	1/3HP	708 - 1536	22-Oct	75ft.	Fig. A	57	Revit	Buy Now Close
KFUH2408-1-2S1-ECM	8	27,304	1	240/208*	33.3 / 28.8*	4 kW	4 kW	2	24	1/3HP	708 - 1536	16 - 36	75ft.	Fig. A	57	Revit	Buy Now Close
KFUH2410-1-2S1-ECM	10	34,130	1	240/208*	41.7 / 36.1*	5kW	5 kW	2	24	1/3HP	708 - 1536	21 - 45	75ft.	Fig. A	65	Revit	Buy Now Close
KFUH2412-1-2S1-ECM	12	40,956	1	240/208*	50 / 43.3*	5.75 kW	5.75 kW	2	24	1/3HP	708 - 1536	25 - 54	75ft.	Fig. A	74	Revit	Buy Now Close
KFUH2415-1-2S1-ECM	15	51,195	1	240/208*	62.5 / 54.1*	10 kw	5 kW	3	24	1/3HP	708 - 1536	31 - 67	75ft.	Fig. A	74	Revit	Buy Now Close
KFUH2418-1-2S1-ECM	17.3	58,874	1	240/208*	72.1 / 62.4*	11.5 kw	5.75 kW	3	24	1/3HP	708 - 1536	35 - 77	75ft.	Fig. A	74	Revit	Buy Now Close
KFUH2420-1-2S1-ECM	20	68,260	1	240/208*	83.3 / 72.1*	10kw	10 kW	4	24	1/2HP	1258 - 1771	36- 50	90ft.	Fig. B	76	Revit	Buy Now Close
KFUH2425-1-2S1-ECM	25	85,325	1	240/208*	104.2 / 90.1*	15 kW	10 kW	5	24	1/2HP	1258 - 1771	45 - 63	90ft.	Fig. B	81	Revit	Buy Now Close
KFUH2430-1-2S1-ECM	30	102,390	1	240/208*	125 / 108.2*	20 kW	10 kW	6	24	3/4HP	1592 - 2142	44 - 60	110ft.	Fig. B	85	Revit	Buy Now Close
KFUH2435-1-2S1-ECM	34.5	117,749	1	240/208*	143.8 / 124.4*	23 kW	11.5 kW	6	24	3/4HP	1592 - 2142	52 - 69	110ft.	Fig. B	85	Revit	Buy Now Close
KFUH4804-1-ECM	4	13,652	1	480	8.3	4 kW	**N/A	1	24	1/3HP	708 - 1536	8-18-	75ft.	Fig. A	57	Revit	Buy Now Close
KFUH4805-1-ECM	5	17,065	1	480	10.4	5 kW	**N/A	1	24	1/3HP	708 - 1536	22-Oct	75ft.	Fig. A	57	Revit	Buy Now Close
KFUH4808-1-2S1-ECM	8	27,304	1	480	16.7	4 kW	4 kW	2	24	1/3HP	708 - 1536	16 - 36	75ft.	Fig. A	57	Revit	Buy Now Close
KFUH4810-1-2S1-ECM	10	34,130	1	480	20.8	5 kW	5 kW	2	24	1/3HP	708 - 1536	21 - 45	75ft.	Fig. A	65	Revit	Buy Now Close
KFUH4812-1-2S1-ECM	12	40,956	1	480	25	8 kW	4 kW	3	24	1/3HP	708 - 1536	25 - 54	75ft.	Fig. A	74	Revit	Buy Now Close
KFUH4815-1-2S1-ECM	15	51,195	1	480	31.3	10 kW	5 kW	3	24	1/3HP	708 - 1536	31 - 67	75ft.	Fig. A	74	Revit	Buy Now Close
KFUH4818-1-2S1-ECM	17.3	58,874	1	480	36	11.5 kW	5.75 kW	3	24	1/3HP	708 - 1536	35 - 77	75ft.	Fig. A	74	Revit	Buy Now Close
KFUH4820-1-2S1-ECM	20	68,260	1	480	41.7	15 kW	5 kW	4	24	1/2HP	1258 - 1771	36- 50	90ft.	Fig. B	76	Revit	Buy Now Close
KFUH4825-1-2S1-ECM	25	85,325	1	480	52.1	15 kW	10 kW	5	24	1/2HP	1258 - 1771	45 - 63	90ft.	Fig. B	81	Revit	Buy Now Close
KFUH4830-1-2S1-ECM	30	102,390	1	480	62.5	20 kW	10 kW	6	24	3/4HP	1592 - 2142	44 - 60	110ft.	Fig. B	85	Revit	Buy Now Close
KFUH4835-1-2S1-ECM	34.5	117,749	1	480	71.9	23 kW	11.5 kW	6	24	3/4HP	1592 - 2142	52 - 69	110ft.	Fig. B	85	Revit	Buy Now Close

* Dual rated heaters will draw 13% less amps and 25% less wattage when operated at 208V.

** Not Available In 2-Stage.

Ordering Information - Three Phase

MODEL	KW	BTUH	PHASE	VOLTS	AMPS	STAGE 1	STAGE 2	ELEMENTS	**THERMOSTAT CONTROL VOLTAGE	MOTOR HP	CFM RANGE	TEMP. RISE RANGE (F)	EFFECTIVE AIR THROW	*SIZE	WT. (lbs.)	REVIT	Purchase
KFUH2005-3-ECM	5	17,065	3	208	13.9	5 kW	**N/A	1	24	1/3HP	708 - 1536	18-Aug	75ft.	Fig. A	57	Revit	Buy Now Close
KFUH2008-3-2S3-ECM	8	27,304	3	208	20.8	4 kW	4 kW	2	24	1/3HP	708 - 1536	18-Aug	75ft.	Fig. A	57	Revit	Buy Now Close
KFUH2010-3-2S3-ECM	10	34,130	3	208	27.7	5 kW	5 kW	2	24	1/3HP	708 - 1536	18-Aug	75ft.	Fig. A	65	Revit	Buy Now Close
KFUH2012-3-2S3-ECM	11.5	39,238	3	208	32	7.5 kW	4 kW	3	24	1/3HP	708 - 1536	18-Aug	75ft.	Fig. A	74	Revit	Buy Now Close
KFUH2015-3-2S3-ECM	15	51,195	3	208	41.6	10 kW	5 kW	3	24	1/3HP	708 - 1536	18-Aug	75ft.	Fig. A	74	Revit	Buy Now Close
KFUH2020-3-2S3-ECM	20	68,260	3	208	55.5	15 kW	5 kW	4	24	1/2 HP	1258 - 1771	36- 50	90ft.	Fig. B	76	Revit	Buy Now Close
KFUH2025-3-2S3-ECM	25	85,325	3	208	69.4	15 kW	10 kW	5	24	1/2 HP	1258 - 1771	36- 50	90ft.	Fig. B	81	Revit	Buy Now Close
KFUH2030-3-2S3-ECM	30	102,390	3	208	83.3	15 kW	15 kW	6	24	3/4 HP	1592 - 2142	44 - 60	110ft.	Fig. B	85	Revit	Buy Now Close
KFUH2040-3-2S3-ECM	40	136,520	3	208	111	20kW	20 kW	8	24	2 x 1/2 HP	2516 - 3542	36- 50	90ft.	Fig. C	152	Revit	Buy Now Close
KFUH2050-3-2S3-ECM	50	170,650	3	208	138.8	25 kW	25 kW	10	24	2 x 1/2 HP	2516 - 3542	36- 50	90ft.	Fig. C	162	Revit	Buy Now Close
KFUH2060-3-2S3-ECM	60	204,780	3	208	166.5	30 KW	30 kW	12	24	2 x 3/4 HP	3184 - 4284	44 - 60	110ft.	Fig. C	170	Revit	Buy Now Close
KFUH2405-3-ECM	5	17,065	3	240/208*	12 / 10.4*	5 kW	**N/A	1	24	1/3HP	1258 - 1771	36- 50	90ft.	Fig. A	57	Revit	Buy Now Close
KFUH2410-3-2S3-ECM	10	34,130	3	240/208*	24 / 20.8*	5 kW	5 kW	2	24	1/3HP	1258 - 1771	36- 50	90ft.	Fig. A	65	Revit	Buy Now Close
KFUH2412-3-2S3-ECM	12	40,956	3	240/208*	28.9 / 25*	6 kW	6 kW	3	24	1/3HP	1258 - 1771	36- 50	90ft.	Fig. A	74	Revit	Buy Now Close
KFUH2415-3-2S3-ECM	15	51,195	3	240/208*	36.1 / 31.2*	10 kW	5 kW	3	24	1/3HP	1258 - 1771	36- 50	90ft.	Fig. A	74	Revit	Buy Now Close
KFUH2418-3-ECM	17.3	58,874	3	240/208*	41.6 / 36*	17.25 kW	**N/A	3	24	1/3HP	1258 - 1771	36- 50	90ft.	Fig. A	74	Revit	Buy Now Close
KFUH2420-3-2S3-ECM	20	68,260	3	240/208*	48.1 / 41.6*	10 kW	10 kW	4	24	1/2 HP	1258 - 1771	36- 50	90ft.	Fig. B	76	Revit	Buy Now Close
KFUH2425-3-2S3-ECM	25	85,325	3	240/208*	60.1 / 52*	15 kW	10 kW	5	24	1/2 HP	1258 - 1771	36- 50	90ft.	Fig. B	81	Revit	Buy Now Close
KFUH2430-3-2S3-ECM	30	102,390	3	240/208*	72.2 / 62.5*	15 kW	15kW	6	24	3/4 HP	1592 - 2142	44 - 60	110ft.	Fig. B	85	Revit	Buy Now Close
KFUH2435-3-2S3-ECM	34.5	117,749	3	240/208*	83 / 71.8*	17.25 kW	17.25 kW	6	24	3/4 HP	1592 - 2142	44 - 60	110ft.	Fig. B	85	Revit	Buy Now Close
KFUH2440-3-2S3-ECM	40	136,520	3	240/208*	96.2 / 83.3*	20 kW	20 kW	8	24	2 x 1/2 HP	2516 - 3542	36- 50	90ft.	Fig. C	152	Revit	Buy Now Close
KFUH2450-3-2S3-ECM	50	170,650	3	240/208*	120.3 / 104*	25 kW	25 kW	10	24	2 x 1/2 HP	2516 - 3542	36- 50	90ft.	Fig. C	162	Revit	Buy Now Close
KFUH2460-3-2S3-ECM	60	204,780	3	240/208*	144.3 / 124.9*	30 KW	30 kW	12	24	2 x 3/4 HP	3184 - 4284	44 - 60	110ft.	Fig. C	170	Revit	Buy Now Close
KFUH2470-3-2S3-ECM	70	238,910	3	240/208*	168.4 / 145.7*	34.5 kW	34.5 kW	12	24	2 x 3/4 HP	3184 - 4284	44 - 60	110ft.	Fig. C	170	Revit
KFUH4805-3-ECM	5	17,065	3	480	7.2	5 kW	**N/A	1	24	1/3HP	1258 - 1771	36- 50	90ft.	Fig. A	57	Revit	Buy Now Close
KFUH4810-3-2S3-ECM	10	34,130	3	480	12	5 kW	5 kW	2	24	1/3HP	1258 - 1771	36- 50	90ft.	Fig. A	65	Revit	Buy Now Close
KFUH4812-3-ECM	12	40,956	3	480	14.4	12 kW	**N/A	3	24	1/3HP	1258 - 1771	36- 50	90ft.	Fig. A	74	Revit	Buy Now Close
KFUH4815-3-2S3-ECM	15	51,195	3	480	18	10 kW	5 kW	3	24	1/3HP	1258 - 1771	36- 50	90ft.	Fig. A	74	Revit	Buy Now Close
KFUH4818-3-ECM	18	58,874	3	480	21.7	17.3 kW	**N/A	3	24	1/3HP	1258 - 1771	36- 50	90ft.	Fig. A	74	Revit	Buy Now Close
KFUH4820-3-2S3-ECM	20	68,260	3	480	24.1	10 kW	10 kW	4	24	1/2HP	1258 - 1771	36- 50	90ft.	Fig. B	76	Revit	Buy Now Close
KFUH4825-3-2S3-ECM	25	85,325	3	480	30.1	15 kW	10 kW	5	24	1/2HP	1258 - 1771	36- 50	90ft.	Fig. B	81	Revit	Buy Now Close
KFUH4830-3-2S3-ECM	30	102,390	3	480	36.1	20 kW	10 kW	6	24	3/4 HP	1592 - 2142	44 - 60	110ft.	Fig. B	85	Revit	Buy Now Close
KFUH4835-3-2S3-ECM	34.5	117,749	3	480	41.5	17.25 kW	17.25 kW	6	24	3/4 HP	1592 - 2142	44 - 60	110ft.	Fig. B	85	Revit	Buy Now Close
KFUH4840-3-2S3-ECM	40	136,520	3	480	48.1	20 kW	20 kW	8	24	2 x 1/2 HP	2516 - 3542	36- 50	90ft.	Fig. C	152	Revit	Buy Now Close
KFUH4850-3-2S3-ECM	50	170,650	3	480	60.1	25 kW	25 kW	10	24	2 x 1/2 HP	2516 - 3542	36- 50	90ft.	Fig. C	162	Revit	Buy Now Close
KFUH4860-3-2S3-ECM	60	204,780	3	480	72.2	30 KW	30 kW	12	24	2 x 3/4 HP	3184 - 4284	44 - 60	110ft.	Fig. C	170	Revit	Buy Now Close
KFUH4870-3-2S3-ECM	70	238,910	3	480	84.2	34.5 kW	34.5 kW	12	24	2 x 3/4 HP	3184 - 4284	44 - 60	110ft.	Fig. C	170	Revit

* Dual rated heaters will draw 13% less amps and 25% less wattage when operated at 208V.

** Not Available In 2-Stage.

Ordering Information - Factory Installed Options

ADD SUFFIX	DESCRIPTION	WEIGHT (lbs.)
-T	Factory Installed 1-Stage Stat (SPST). Temperature range 40F to 100F (For 1-Stage Models Only)	N/A
-2TS	Factory Installed 2-Stage Stat (DPST). Temperature range 40F to 100F (For 2-Stage: -2S1 & -2S3 Models Only)	N/A
-SF	Factory Installed Summer Fan Switch	N/A
-DS32	Factory Installed 32 Amp, 3-Pole Non-Fused Locking Disconnect Switch	N/A
-DS63	Factory Installed 63 Amp, 3-Pole Non-Fused Locking Disconnect Switch	N/A
-DS80	Factory Installed 80 Amp, 3-Pole Non-Fused Locking Disconnect Switch	N/A
-DS100	Factory Installed 100 Amp, 3-Pole Non-Fused Locking Disconnect Switch	N/A
-3/4	Sub 3/4 HP Motor for 20kW & 25kW Models Only	N/A

Ordering Information - Accessories

MODEL	UPC	DESCRIPTION	WEIGHT (lbs.)	Purchase
KFUH-DIFFUSER	15741	Standard KFUH Air Diffuser	5	Buy Now Close
KFUH-RD	15743	Radial Diffuser for wide pattern heat dispersion	4	Buy Now Close
KFUH-90D	15728	Right angle elbow (90) diffuser with adjustable louvers	15	Buy Now Close
KFUH-90RD	15729	Right angle elbow (90) with radial diffuser	14	Buy Now Close
1F85U-22PR	19054	2-Stage, 24V 7 Day Programmable Thermostat 44F-95F (For use with 2-stage heaters)	1	Buy Now Close
1F85U-22NP	19044	2-Stage, 24V Non-Programmable Thermostat 44F-95F (For use with 2-stage heaters)	1	Buy Now Close
1E30N-910	55379	1-Stage, 24V Thermostat Mercury Free-Vertical 45F-90F (For use with 1-stage heaters)	1	Buy Now Close

Specifications

Furnish and install King Electric model KFUH ECO2S high air velocity electric unit heater. Unit shall include an ECM electronically controlled motor, dual inlet industrial blower, heavy duty open coil heating element, 24V control, ductable intake and outlet connections, replaceable intake filter, and fan only relay. 2S models shall be capable of 2 stage energy saving heating when paired with a compatible 2 stage 24V thermostat. Heater shall be suitable for horizontal or vertical mounting in high ceiling commercial and industrial applications and shall be cULus certified.

Electrical

Voltage: 208V / 240V / 480V
Phase: 1Ø / 3Ø
kW Range: 3.8–70 kW
Control Voltage: 24V
Control Compatibility: 2-Stage 24V Thermostat on 2S Models

Performance

Application: High Velocity Commercial and Industrial Heating
Operation: High Airflow Fan Forced Heating
Control Strategy: 24V Control with 2 Stage Energy Saving Heating on 2S Models
Air Throw: Long Throw Air Distribution for High Ceiling Spaces

Mechanical

Construction: Solid Riveted Heavy Duty Steel Housing
Mounting: Horizontal or Vertical Mount
Motor: ECM Electronically Controlled Motor
Fan Assembly: Dual Inlet Industrial Blower
Ducting: Ductable Intake and Outlet
Filter: Replaceable Intake Filter
Accessories: Adjustable Louver Hood and Diffuser Ordered Separately

Compliance

Certification: cULus Certified for US and Canada
Code Compliance: Seattle Energy Code Compliant
Warranty: 5 Year Limited Warranty
Country of Origin: Made in USA

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