KING ECP2P User Manual

SAVE THESE INSTRUCTIONS

Heater On

+

GENERAL INFORMATION

EC2P & ECP2P Series

System Matched™ for King heaters

DANGER

ELECTRIC SHOCK OR FIRE HAZARD

READ ALL WIRE SIZING, VOLTAGE REQUIREMENTS AND SAFETY

DATA TO AVOID PROPERTY DAMAGE AND PERSONAL INJURY

!!

2-POLE
POSITIVE
OFF
SWITCH

ECP SHOWN

LO

PROGRAM DRAWING #1

HEAT ON INDICATOR

LOW BATTERY INDICATOR
RESET: BACK TO PRESETS

*RUN: DAY AND TIME
*HOLD BUTTON:

RUN PROGRAM /
HOLD TEMPERATURE

*TAMPERPROOF
KEY LOCK

BATTERIES

COVER FOR BATTERIES

*ECP model only

U

®

CUS

LISTED

SPECIFICATIONS:

Temperature range: 40° to 93°F
Temperature Default: 68°F
Display Format: Liquid Crystal Display (LCD)
Display size: Large Format
Sample Rate: Every 60 seconds
Delay on or off: 3 minutes
Heat indicator: LCD “heater on”
Relay Rating: 16 Amps inductive
Relay: AA battery powered
Accuracy: ± .9°F
Maximum Amps: 16 inductive continuous
Maximum Watts: 3840 @ 240V or 1 hp

3328 @ 208V or ¾ hp
1920 @ 120V or ½ hp
Total inductive motor load combined can not
exceed 16 Amps
Minimum Watts: 0

L

Power Supply: 1 to 240 Volts AC

GENERAL INFORMATION:

This thermostat is designed to provide the best temperature control for residential line voltage electric heating. For use on 120 / 208 / 240 Volt AC and a total of
16 Amps load inductive continuous. This is a single pole thermostat with a double pole switch to disconnect both legs of power to the heater.

Almost all residential application electric heaters installed as original equipment by an electrician will be 208 or 240 Volt. It is very rare and uprofessional that a
home, apartment or condominium would be wired with all 120 Volt heaters. Check the voltage to make sure you have the right thermostat for your heater
voltage. A 2-pole or double-wide circuit breaker at the panel indicates a 240 Volt circuit; A 1-pole or single-wide breaker indicates a 120 Volt circuit. There are
some exceptions to this rule; Check with a voltmeter to determine accurate phase to phase voltage.

Be safe and smart! Electricity can cause severe injury or death if not treated with respect and caution.

This thermostat will provide years of comfort control for your family in use with small fan-driven electric heaters, baseboards, radiant ceiling or wall panel
heaters, cove heaters, or any line voltage resistance heating systems that do not have an electric motor over 1/3 hp.

OPERATION:

This precision electronic thermostat uses a very sensitive thermistor near the bottom to sense room air temperature, sending the information on to the
microprocessor. As the temperature drops, the information sent will indicate if heat is needed. To reduce any undesirable fast on/off cycles, the processor has a
built-in delay, up to 3 minutes. This saves energy and provides the best temperature control of an area.

This thermostat requires batteries and will have a one minute back-up when replacing old batteries. ECP only: The default program setting is 62°F set back,

70°F set up and a standard work week timing when powered up. The day and time of day can be adjusted by selecting the TIME position and using the
arrow keys. For an override, the UP arrow increases temperature and the DOWN arrow reduces temperature without any need to readjust the
programming. When “OFF” button is pressed the backlight will go off indicating both hot leads are disconnected.

The thermostat may take a few hours to stabilize the room temperature; Do not be alarmed when the thermostat does not show the correct temperature
immediately after installation.

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. King recommends a 21 cubic inch junction box for new installation. Leveling of the thermostat is not required. #6-32 Phillips head mounting screws
are provided.

Mount the thermostat in an open area about 5 feet above the floor, avoiding outside walls as they are too cold and will inhibit the thermostat’s performance. A
good rule of thumb is to place the thermostat above the wall switch for that room. This works well for most bedrooms, making it very convenient to turn the heat
lower upon leaving. Avoid mounting the thermostat where there may be plumbing pipes in the wall, or placing a lamp or TV too close to the thermostat. Heat
from such items negatively affects the thermostat’s performance.

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

ECP2P information.ai : 6/10

SAVE THESE INSTRUCTIONS

+

Heater On

INSTALLATION AND MAINTENANCE

DISPLAY LEGEND - EC & ECP

EC2P & ECP2P Series

Double Pole (NOT 2-Circuit)

REPLACES MODELS: 1A66 / D22 / M602 / T498B / T4398B / MD26 /
WR661 / 1D22 / C902 / TW242 / TD902 / T410B / TD942 / M402 / M512

DANGER

ELECTRIC SHOCK OR FIRE HAZARD

READ ALL WIRE SIZING, VOLTAGE REQUIREMENTS AND SAFETY

DATA TO AVOID PROPERTY DAMAGE AND PERSONAL INJURY

!!

DISPLAY CHANGE

*DAY OF WEEK

*WAKE, LEAVE,
RETURN, SLEEP

2-POLE POSITIVE OFF

BACKLIGHTING

(backlight is off
if “OFF” button
is pushed)

WARNING

LO

!!

HEAT ON

*TIME OF DAY/
TEMPERATURE

LOW BATTERY INDICATOR

SET TEMPERATURE
UP OR DOWN

PRODUCT DRAWING #2

*ECP model only

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

U

L

®

CUS

LISTED

Thank you for buying this King thermostat. It should provide years of service and comfort to your home. Inspect the package. Enclosed should be the
thermostat with its cover and two screws.

1. Check the total load of the heaters being connecting to the thermostat. The maximum wattage at 240 Volt is 3840, 208 Volt is 3328, 120 Volt is
1920 and 16 Amps/480 Watts at 30 Volt DC. It is important to stay below this total wattage when connecting the thermostat. Lower wattage
prolongs the the life of the contacts in the relay.

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

3. Remove cover of thermostat by placing thumb on LCD display and fingers on top edge of cover. Pull towards you. This will expose the top

mounting screw. Put thumb on the lower part of the battery cover and pull down to expose mounting screw and battery compartment.

4. There may be a pair of white wires connected in your junction box. If so, leave them alone and work with the black wires. If there is only a black
wire and white wire use them - this is called a switch leg (see wiring diagram #3).

5. Take a black lead from the panel and attach it to the black lead on the thermostat. Take the white wire from the panel and attach it to the other
black lead on the thermostat.

6. Attach the black heater lead to the red thermostat lead. Take the white lead to the heater and attach to the red thermostat lead. This will provide
power to the heater when the thermostat calls for heat.

7. Push the wires carefully into the junction box making sure no wires are pinched or will obstruct the screws mounting the thermostat. Now attach
the thermostat to the wall using the #6-32 Phillips head screws provided. Replace cover. Do not over tighten screws.

8. Install AA batteries to start display. Replace cover. Batteries operate relay and display only; they are not charged by line voltage power and
should last one year. A half-filled battery shape icon saying “Lo” will appear on the LCD to indicate battery replacement is necessary.

9. Turn on power. Test by increasing 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. You will hear a small click and “Heater On” will appear in the LCD; the heater should be on now. Turn the thermostat down
by tapping on the Down arrow. (NOTE: to turn power off push the button.

10. You have now verified the thermostat is in perfect working order and ready for years of trouble-free operation.

11. Mounting tips: Make sure nothing is nearby (i.e. plumbing pipes in the wall, a lamp close by, direct sunlight, a T.V. set, and/or cold drafts from

a door opening) that could affect the average room temperature sensing of the thermostat. Typically the best, most convenient location is on
inside walls above the light switch for that room.

12. Cleaning: Canned compressed air works great to clear any dust accumulation, while a damp cloth will additionally clean the plastic case surface
of finger prints. Strong spray cleaners may damage the plastic case or remove writing or arrows screen-printed on case. Blow out any dust that
may accumulate on top or bottom air vents. Good air circulation is key to long life and accurate operation.

13. Humid locations: Mildly humid location like bathrooms may reduce life due to corrosion on the contact and lint from towels getting into
thermostat air vents. To extend life blow out vent regularly and mount thermostat away from shower locations.

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

ECP2P installation.ai : 6/10