KING U-SS User Manual

electrical mfg. company

UTILITY HEATER

Protect your equipment from destructive freezing by install-

ing this unit where protective warmth is required. This versatile utility
heater will save you time and money by preventing the costly inconve­nience of frozen pipes and equipment in your pump room, valve room,
utility room, etc. With the automatic thermostat you set the required
temperature to be maintained. Low wattage units can be used in electri­cal cabinets for moisture control and to maintain a minimum operating
temperature to provide high reliability of electronic equipment.

WATTAGE

62 U2425** N/A 5*

125 U2450** N/A 10*

187 U2475** N/A 15*

250 U24100** U2425 20

500 U1250 U2450 38

750 U1275 U2475 50

1000 U12100 U24100 75

* cubic foot cabinet
** 240 Volt unit run at 120 Volts

Model for

120V

Model for

240V

ROOM SIZE

(cubic feet)

FEATURES

• Thermostat has range of 40º to 90ºF

• Steel sheath long life element

• Expanded metal element shield

• 4 mounting feet

• Capillary tube safety high limit

• Steel case and grille

• Optional stainless steel case and grille

• Baked enamel ivory finish

• ½" knockout for electrical hookup

• 1-year warranty

Clearances from combustible surfaces

Low Wattage Clearances from combustible surfaces - for 62 Watts to 187 Watts

Maximum wattage for vertical installation is 250 Watts. Do not exceed 250 Watts with this installation.

VERTICAL

ON WALL

(Thermostat Up)

DO NOT INSTALL THIS WAY

9131 10th Avenue South, Seattle WA 98108 [phone] fax [phone]

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Installation Instructions

It is extremely important to verify the electrical power supply is the same voltage as the heater you are installing.
120 Volt heaters are usually not interchangeable with 240 Volt power supply. Powering a 240 Volt unit with 120
Volt supply wires will reduce the heater output by approximately 75% which may be undesirable for your application.
Powering a 120 Volt unit with 240 Volt supply wires will destroy the heater and void all warranties if the heater is not
made to be connected to 120 and 240 Volts. The 240V pumphouse can be run on 120V for reduced wattage.

CAUTION: Turn off power source supplying the heater before
attempting installation, maintenance or repairs. Lock or tag
circuit breaker or fuse panel door. Failure to do so could result
in serious electrical shock, burns or possible death.

WARNING : RISK OF ELECTRIC SHOCK. CAN CAUSE INJURY OR DEATH : DISCONNECT ALL REMO TE
ELECTRIC POWER SUPPLIES BEFORE SERVICING.

WARNING: Risk of fire, do not use as residential or household heater.

CAUTION: Source of possible ignition - high temperatures, keep combustible material away from front of
heater. Do not operate heater with cover removed.

Note: Not for use in explosive gas environments similar to boat gasoline engine rooms. Thermostat is a snap action

type and creates an arc when opening.

Installation Instructions

• Remove heater from box. Check contents received for
damage from shipping.

• Attach unit to wall or flat surface following dimensional
clearances from page one.

• Unit cannot be installed vertically with thermostat at

the top.

• Remove junction box cover and connect power wire with

appropriate strain relief device.

• Attach power wires to lead wires in unit.

• Replace junction box cover and turn thermostat off.

• Apply power.

• Turn thermostat on and test to insure that unit and

thermostat are working properly.

• Set thermostat for desired temperature.

Dimensions

Wire

Diagram

Exploded view shown for detail. Unit is one-piece.

9131 10th Avenue South, Seattle WA 98108 [phone] fax [phone]

Parts List

When ordering parts you must specify if you are replacing Stainless
Steel Parts by adding -SS to the end of the model number. The model

numbers below are for standard utility heaters.

1 64 UTILITY SM CASE Pump House Case (1 piece)
2 64-08 Reflector Pan
3 & 4 64-02 Wiring Compartment Cover &
Element Screen (1 piece)
5 500xxxx Element - Specify Voltage & Wattage
6 10H11-221445 High Temperature Capillary Tube Limit
7 58T1S-302861 Optional Single Pole Thermostat Kit
8 PT-2-P-S Optional Thermostat Knob

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