KING ESP User Manual

SAVE THESE INSTRUCTIONS

GENERAL INFORMATION

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SPECIFICATIONS: ESP 230 & 120

Temperature range: 44° to 95°F

ESP-230 & ESP-120

with battery program back-up

DANGER

ELECTRIC SHOCK OR FIRE HAZARD

READ ALL WIRE SIZING, VOLTAGE REQUIREMENTS AND SAFETY

DATA TO AVOID PROPERTY DAMAGE AND PERSONAL INJURY

!!

MoTuWeThFrSaSu

P M

TEMP SET

Backlight Switch System On/Off

Reset

CLOCK

HEAT

PROG

ROOM
TEMP

HOLD

SET

RESET: BACK TO PRESETS

CLOCK: DAY AND TIME

PROGRAM: VIEW PRESETS

HOLD TEMPERATURE

SET BUTTON:

RUN PROGRAM

TEMPERATURE OR TIME

UP AND DOWN

HEAT ON INDICATOR

LEAVE THESE INSTRUCTIONS WITH HOME OWNER

GENERAL INFORMATION:

This thermostat is designed to provide the highest level of accurate temperature control for residential line
voltage electric heating in 120 or 208/240 Volt. Almost all electric heaters installed as original equipment in a
residential application will be 208 or 240 Volt. It is very rare that a home, apartment or condominium would be
wired with all 120 Volt heaters. Check your voltage to make sure you have the right thermostat for your

Temperature Default: Your setting
Display Format: Liquid Crystal Display (LCD)
Display size: Large format
Sample Rate: Every 60 seconds
Delay on or off: 3 minutes
Illumination: Green LED
Heat Indicator: Red LED
Relay Rating: 30 Amps before de-rating
Accuracy: ±1.2º F
Maximum Amps: 22 resistive continuous
Maximum Watts: 5280 (ESP-230)

2640 (ESP-120)

Minimum Watts: 0
Power Supply: 120 Volt (ESP-120)

208/240 Volt (ESP-230)
System On/Off Switch
Battery Backup

heater voltage. A 2-pole, or double wide circuit breaker, at the panel would indicate you should use the 240 Volt model. A single pole, or single wide breaker,
would indicate a 120 Volt circuit. There are some exceptions to this rule so checking with a voltmeter is the only way to know for sure.

ENERGY STAR

Be safe and smart, electricity can cause severe injury or death. If you are uncomfortable hire an electrician for the project.

The thermostat will provide years of comfort control for your family for small fan driven electric heaters, baseboards, radiant ceiling, wall panel heaters, cove
heaters, or any line voltage resistance heating systems that do not have an electric motor over 1/3 hp. The thermostat will be warm to the touch on top. This is
normal operation and also provides air currents across the face of the thermostat that better help it sense room temperature.

OPERATION:

This precision electronic thermostat will sense the room air at the bottom of the thermostat by a thermistor. This very sensitive sensor will send information to
the microprocessor. As the temperature drops, the information it sends will indicate if heat is needed. To reduce any undesirable fast on/off cycles the
processor has a built in 3 minute delay. This will save energy and provide the best control of a space.This thermostat does not require batteries and will have a
default setting of 68°F when powered up. Temperature is easily changed by tapping the ARROW keys or on the front of the thermostat. Up arrow
increases temperature and down arrow reduces temperature. Backlighting is provided on some models and can be turned off or on by a small switch under
the left corner of the thermostat. This will allow you to see the thermostat in low light or at night. A system On/Off switch is located under the lower right corner
to disable the thermostat. This will not disconnect all the power to the heater. To perform maintenance on the heater you need to turn the circuit breaker at the
circuit breaker panel off.

INSTALLATION:
This line voltage device should be installed and serviced by a qualified electrician. The thermostat has been designed to mount to a standard 2" x 4" electrical
outlet box. Leveling of the thermostat is not required. Mounting screws are provided. Mount the thermostat about five feet above the floor in an open area. A
good rule of thumb is to place the thermostat above the light switch for that room. This works well for most bedrooms and makes it very convenient to turn the
heat lower when leaving the room. Avoid mounting the thermostat where there may be plumbing pipes in the wall, or placing a lamp or TV too close to the
thermostat. The heat from these items affects the thermostat’s performance.

Due to intermally generated heat and an offset to compensate for this, the display temperature of the thermostat may not match a digital thermometer placed next to it or in the same room. This
thermostat will keep very accurate control of room temperature. Set it to what feels comfortable, not the temperature you were used to with your old thermostat.

KING ELECTRICAL MFG. CO. 9131 10TH AVENUE SOUTH SEATTLE, WA 98108 · PH: 206.762.0400 · FAX: [phone] · www.king-electric.com

ESP information.ai : 01/07

SAVE THESE INSTRUCTIONS

INSTALLATION AND MAINTENANCE

ESP-230 & ESP-120

with battery program back-up

DANGER

ELECTRIC SHOCK OR FIRE HAZARD

READ ALL WIRE SIZING, VOLTAGE REQUIREMENTS AND SAFETY

DATA TO AVOID PROPERTY DAMAGE AND PERSONAL INJURY

!!

DAY OF WEEK

PM DISPLAYED

(AM WILL BE BLANK)

TIME OF DAY

SET TEMPERATURE

PROGRAM 1,2,3,4

ROOM TEMPERATURE

BACKLIGHTING

WARNING

DISPLAY LEGEND

BACKLIGHT SWITCH

Backlight Switch On / Off Switch

!!

tap PROG and SET
simultaneously to
enter program mode

ON/OFF SWITCH

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REPLACES MODELS:

CALV / T4800 /
T4700 / T4600 /
1A66 / D22 /
S22 / M602 /
T498 / T4398 /
MD26 / WR661 /
1D22 / S2022 /
TW242 / TD902 /
T410 / TD942 /
M7 / M402 /
M512

READ CAREFULLY - These instructions are written to help prevent difficulties that might arise during installation of
thermostat. Studying the instructions first may save you considerable time and money later. Observing the following
procedures will cut your installation time to a minimum. Save these instructions for future use.

Thank you for buying this King Thermostat. It should provide years of service and comfort to your home. Inspect the package. You should have
received the thermostat with its cover and two screws to attach it to a wallbox.

ENERGY STAR

1. Check the total load of the heaters you are connecting to the thermostat. The maximum wattage at 240 Volt is 5280 Watts (ESP230). If
you have the 120 Volt version the maximum is 2640 Watts (ESP120). You need to stay below this total wattage connected to the thermostat.
The lower the wattage the longer the life of the contacts in the relay.

2. To wire the thermostat determine which pair of wires are coming from the circuit breaker panel and which pair lead to the heater.

3. With wire nuts attach the blue wire (white wire on 120 Volt model ESP120) into the pair of white wires in the junction box. (Option is red

wires)

4. Use black lead from the circuit breaker panel and attach it to the black lead on the thermostat. This will provide power to the thermostat, LCD
display and backlight.

5. Attach black lead going to the heater to the red lead on the thermostat. This will provide power to the heater when the thermostat calls for
heat.

6. Remove thermostat cover by holding back of thermostat with one hand and grasp the top and bottom of the cover with the other hand, pulling
towards you evenly.

7. Push the wires carefully into the junction box making sure no wires will be pinched when attaching to the wall using #6-32 screws provided.

8. Holding thermostat into wallbox, fasten screws at the top and bottom mounting holes attaching to wallbox. Do not over tighten screws.

9. Turn on power to test. Increase set point to higher than current room temperature by tapping the up button. There will be up to a 3 minute

delay in turning on. The red indicator will turn on and you will here a small click as the heater energizes. Turn the thermostat down by tapping
on the down arrow.

10. To turn on backlighting: Under the bottom left of the thermostat you will feel a small switch. Moving one way will turn on the light and the
other will turn off the backlight. The On / Off switch is located on the lower right corner to disable any operation. You have now verified the
thermostat is in perfect working order.

11. Mounting tips: Make sure there is nothing that could affect the average room temperature sensing of the thermostat such as plumbing pipes
in the wall, a lamp close by, direct sunlight, a T.V. set, and/or cold drafts from a door opening.

12. Cleaning: A damp cloth will clean the plastic case surface of fingerprints and dust. Strong spray cleaners may damage plastic case, remove
writing or arrows printed on case. Blow out any dust that may accumulate on air vents on top or bottom. Good air circulation is key to long life
and accurate operation.

13. Humid locations: Mildly humid locations like bathrooms may see a reduced life due to corrosion on the contact and lint from towels getting
into air vents on thermostat. Blow out vent regularly and mount thermostat away from shower locations for longer life.

14. Power outages: The internal battery program backup will hold all or your settings. These batteries are constantly charged and should never
need to be replaced.

KING ELECTRICAL MFG. CO. 9131 10TH AVENUE SOUTH SEATTLE, WA 98108 · PH: 206.762.0400 · FAX: [phone] · www.king-electric.com

ESP installation.ai : 01/07