MODEL KB

heavy duty unit heater

King’s KB series unit heaters are designed for use as primary or supplemental heat sources in large or exposed areas , including high-rise buildings, stores, warehouses, garages, water treatment and fire room vaults to prevent freezing. Spiral finned steel elements and high CFM ensure even air distribution producing cooler element operation, prolonging heater life. By combining the highest quality components, with a dynamically balanced fan blade and in-built thermostat, the KB unit heater will provide years of trouble-free service. Includes universal wall/ceiling bracket for simple installation.

Adjustable Louvers to Direct Air
Built-In Fan Delay to Dissipate Heat
High Mass Steel Fin Heat Exchanger
Patented Smart Limit Protection®
Permanent Lubricated Unit Bearing Motor
Universal Wall/Ceiling Bracket Included
Proudly Made in the USA with U.S. & Global Materials
Built-In Thermostat
5 Year Limited Warranty

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Decades Of Reliability

By combining the highest quality components, with a dynamically balanced fan blade and in-built thermostat, the KB unit heater will provide years of trouble-free service..

Large Exposed Areas Of Comfort

KB unit heaters are Designed for use as primary or supplemental heat sources in large or exposed areas, including high-rise buildings, stores, warehouses, garages, water treatment and fire room vaults to prevent freezing.

Available Models

Ordering Information

MODEL	UPC	KILO WATTS	BTUH	PHASE	VOLTS	AMPS	**THERMOSTAT CONTROL VOLTAGE	MOTOR HP	CFM	TEMP. RISE	WT. (LBS.)	PURCHASE
KB2003-1-T-B1	13294	3.3	11.1	1	208	15.8	208	9W	400	36°F	30.5	Buy Now Close
KB2004-1-T-B1	15011	4	13.5	1	208	19.2	208	9W	400	38°F	30.5	Buy Now Close
KB2404-1-T-B1	13356	4	13.5	1	240/208*	16.6/14.4	240	9W	400	38°F	30.5
KB2704-1-T-B1	13360	4	13.5	1	277	14.4	277	9W	400	38°F	30.5	Buy Now Close
KB4804-1-T-B1	15017	4	13.5	1	480	8.3	240	9W	400	38°F	30.5	Buy Now Close
KB2005-1-T-B1	13368	5	17	1	208	24	208	9W	400	40°F	30.5	Buy Now Close
KB2405-1-T-B1	13376	5	17	1	240/208*	20.8/18	240	9W	400	40°F	30.5	Buy Now Close
KB2705-1-T-B1	13384	5	17	1	277	18.1	277	9W	400	40°F	30.5	Buy Now Close
KB4805-1-T-B1	13390	5	17	1	480	10.4	240	9W	400	40°F	30.5	Buy Now Close
KB2007-1-T-B2	30780	7.5	25.6	1	208	36.1	208	16W	600	40°F	45	Buy Now Close
KB2407-1-T-B2	13436	7.5	25.6	1	240/208*	31.2/27	240	16W	600	40°F	45	Buy Now Close
KB2707-1-T-B2	13464	7.5	25.6	1	277	27	277	16W	600	40°F	45
KB4807-1-T-B2	30781	7.5	25.6	1	480	15.6	240	16W	600	40°F	45
KB2010-1-T-B2	13540	10	34.1	1	208	48.1	208	25W	725	44°F	45
KB2410-1-T-B2	13548	10	34.1	1	240/208*	41.6/36.1	240	25W	725	44°F	45
KB4810-1-T-B2	13562	10	34.1	1	480	20.8	240	25W	725	44°F	45
KB2012-1-T-B2	13618	12.5	42.7	1	208	60.1	208	35W	825	48°F	46.5
KB2412-1-T-B2	13626	12.5	42.7	1	240/208*	52/45.1	240	35W	825	48°F	46.5
KB2712-1-T-B2	30782	12.5	42.7	1	277	45.1	277	35W	825	48°F	46.5
KB2015-1-T-B2	13674	15	51.2	1	208	72.1	208	50W	925	51°F	46.5
KB2415-1-T-B2	13682	15	51.2	1	240/208*	62.5/54.1	240	50W	925	51°F	46.5

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

** Over 5kw line voltage control is operating the contactor coil only, and will draw under 1 amp.

Ordering Information

MODEL	UPC	KILO WATTS	BTUH	PHASE	VOLTS	AMPS	**THERMOSTAT CONTROL VOLTAGE	MOTOR HP	CFM	WT. (LBS.)	PURCHASE
KB4803-3MP-T-B2	13320	3	10.2	1-3	480	6.3	240	5W	400	46.5	Buy Now Close
KB2005-3MP-T-B2	13372	5	17.1	1-3	208	24 & 13.9	208	9W	400	46.5	Buy Now Close
KB2405-3MP-T-B2	13380	5	17.1	1-3	240/208*	20.8/18 & 18/15.6	240	9W	400	46.5
KB4805-3MP-T-B2	13394	5	17.1	1-3	480	10.4 & 6	240	9W	400	46.5	Buy Now Close
KB2007-3MP-T-B2	13452	7.5	25.6	1-3	208	36.1 & 20.8	208	16W	600	46.5	Buy Now Close
KB2407-3MP-T-B2	13460	7.5	25.6	1-3	240/208*	31.2/27 & 18/15.6	240	16W	600	46.5	Buy Now Close
KB4807-3MP-T-B2	13474	7.5	25.6	1-3	480	15.6 & 24/18	240	16W	600	46.5	Buy Now Close
KB2010-3MP-T-B2	13544	10	34.1	1-3	208	27.7	208	25W	725	46.5	Buy Now Close
KB2410-3MP-T-B2	13552	10	34.1	1-3	240/208*	41.6/36.1 & 24/20.8	240	25W	725	46.5	Buy Now Close
KB4810-3MP-T-B2	13566	10	34.1	1-3	480	20.8 & 12	240	25W	725	46.5	Buy Now Close
KB2012-3-T-B2	30783	12.5	42.7	3	208	34.6	208	35W	825	46.5	Buy Now Close
KB2412-3-T-B2	30784	12.5	42.7	3	240/208*	30/26	240	35W	825	46.5
KB4812-3MP-T-B2	13646	12.5	42.7	1-3	480	26 & 15	240	35W	825	46.5
KB2015-3-T-B2	30785	15	51.2	3	208	41.6	208	50W	925	46.5
KB2415-3-T-B2	30786	15	51.2	3	240/208*	36/31.2	240	50W	925	46.5
KB4815-3MP-T-B2	13700	15	51.2	1-3	480	18	240	50W	925	46.5
KB2020-3-T-B2	13736	20	68.3	3	208	55.5	208	1/4 HP	1100	55
KB2420-3-T-B2	13740	20	68.3	3	240/208*	48.1/41.6	240	1/4 HP	1100	55
KB4820-3MP-T-B2	13750	20	68.3	1-3	480	24	240	1/4 HP	1100	55

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

Field Mount Options

ADD SUFFIX:	UPC	DESCRIPTION
DS32	13480	Disconnect Switch, Field Installed Kit, 32 AMP, 600V
DS63	13481	Disconnect Switch, Field Installed Kit, 63 AMP, 600V

Replacement Accessories

ADD SUFFIX:	UPC	DESCRIPTION
KBB-1	15192	Universal Wall/Ceiling Small Mounting Bracket (for heaters with size A heaters)
KBB-2	15195	Universal Wall/Ceiling Large Mounting Bracket (for heaters with size B, C, and E)
KBHS	13486	KB Replacement Hook Swivel

Bracket Selection Chart

BRACKET #	HEATER KW SIZE USED WITH	L	W	H	A	B	C	D	E	F	X	Y	Z
KBB-1	3 to 5 kW (1 phase)	12 1/2"	2 15/16"	10 1/16"	1 3/16"	7"	1 7/8"	1 7/8"	9 1/4"	1 7/8"	3/4"	1"	1/2"
KBB-2	7.5 to 10 kW (1 phase) 3 to 20 kW (3 phase)	16 7/8"	2 15/16"	10 1/8"	1 1/4"	7"	1 7/8"	1 5/8"	13 5/8"	1 5/8"	3/4"	1"	1 1/2"
KBB-3	25 to 40 kW (3 phase)	19 1/2"	4 3/16"	13 3/16"	15/16"	10"	1 7/8"	1 5/8"	16 1/4"	1 1/8"	11/16"	1"	2"

Engineering Specs

Contractor shall supply and install KB Series heavy duty unit heaters, manufactured by King Electrical Mfg. Company. Heaters shall be of the wattage and voltage as indicated on the plans.

Construction: All exterior and interior metal enclosure parts are made from 20 gauge electrogalvanized Steel with a rust inhibiting baked enamel finish. Smooth rounded corners and protective edge trim give an attractive modern appearance.

Adjustable Outlet Louver: Louvers direct air up or down as needed for the heating application.

Rear Intake Screen: Heavy gauge steel screen protects against foreign objects making accidental contact with the rotating fan blade.

Spiral Fin Elements: The metal sheath element is copper brazed with spiral fins then molded into a coil configuration. This combination produces the best heat transfer while eliminating the potential for hot spots by positioning the element in the maximum airflow stream.

Totally Enclosed Fan Motor: Permanently lubricated long life, unit bearing with 20cc of oil. Epoxy-coated motor with enclosed rotor resists moisture and corrosion for long-lasting, trouble-free operation.

Staging: Two-Stage operation is available as an optional feature.

Aluminum Fan Blade: Axial flow-type mounted directly to the motor shaft for maximum efficiency.

Built-In Thermostat: Single pole factory installed hydraulic capillary tube thermostat for precision heating control. Operating range 40° to 90

Manual Thermal Cutout: Heaters shall be equipped with King’s patented thermal overload Smart Limit Protection®, which disconnects elements and motor in the event normal operating temperatures are exceeded. If thermal overload trips due to abnormal operating temperatures, thermal overload shall remain open until manually reset by turning the heater off for 15 minutes. Automatically reset of thermal overloads, which allow the element to continue to cycle under abnormal conditions, will not be accepted.

Internal Controls: Magnetic contactors are standard on all 480V heaters, all 208V/1-Phase, 240V/1-Phase, 277V/1-Phase heaters above 5kW, and all 3-Phase heaters. The control voltage is equal to the line voltage (208, 240 or 277) except for 480V models where a transformer is provided for 24V control. Over 5kW the line voltage control is operating the contactor coil only and will draw only 1 Amp.

Fusing: Internal circuit fusing is provided when the heater ampacity exceeds 48 Amps to comply with UL standards. A fan delay is provided standard on models 12.5-kW and above to dissipate residual heat from the heating elements.

Easy Installation:A hinged access panel located on the bottom of the heater allows for quick wiring and easy maintenance for the life of the heater. Includes universal wall/ceiling bracket for simple installation.

Approvals: cULus (E41422)