Dimplex DWT431W Non-Programmable Thermostat 4000W Owner’s Manual

Dimplex DWT431W Non-Programmable Thermostat 4000W

Congratulations on your purchase of this Dimplex line-voltage thermostat. Your new thermostat is preprogrammed by the installer and ready to use. Please take the time to read and understand this manual so you can begin to enjoy the convenience this product offers.

Features

• CSA C828 Performance Certified
•  High Power up to 4000W
•  Ideal for baseboard heaters, convectors, radiant ceilings and electric fanforced heating systems
• Temperature setting and display in °C or °F
• Manual, precise temperature control set in half degrees
• TRIAC system (quiet operation)
• Cycle rates for proportional heating
• Room Temperature and Set Point Temperature display
• Built-in surge protection
• Memory back-up for settings
• Setting range: +5°C to +35°C (41°F to 95°F)
• Heating Power Level display
• Simple 2-wire installation

Specifications

Rating: 120V~240V AC, 60Hz
Maximum Load: 16.6A, 4000W @ 240V, 2000W @ 120V
Minimum Load: 300W @ 240V

Keep this manual in a safe place for future reference.

| This product is for use with high voltage system (120V~240V) with a minimum load of 300W; it is not  designed for use with low voltage (24V) central heating & air conditioning systems or wall mounted furnaces
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| In order to avoid fire, shock or death, shut off power supply at the circuit breaker or fuse and test that the power is off before wiring.
| This product must be installed in accordance with the Canadian Electrical Code, and in the province of Quebec, by a qualified electrician. Dimplex assumes no responsibility for damages caused by improper wiring. Improper installation automatically voids the warrant

• Verify that the heating appliance that is being connected is within the specified load range. 
• Confirm voltage is within the device rating.
• For wiring, use copper conductors only.
• Must be mounted on a certified electrical box

Step-by-step Installation

1. Remove the old thermostat carefully and identify the two wires from the wall box
2. Gently remove the faceplate from the right side of the new thermostat
   Note: Do not remove the screws from the back of the unit as these screws hold the thermostat together.| Remove Faceplate
   To remove the faceplate, genly pull the right side of the thermostat. The faceplate should come off easily
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3. Using the wire nuts provided, securely fasten each wire from the new thermostat to a  wire in the wall box. Rever to the wiring diagram on the next page.
   Note: Ensure no bare wire is exposed
   

4. Mount the new thermostat onto the wall box using the two screws provided through the mounting holes, and then replace the faceplate. (Place 2 screws in the right side or 2 left holes).
   | If mounting on a single gang box, use the two mounting holes on the left side, in order to avoid fire or shock.
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5. Reconnect power supply

LCD Display / Buttons

LCD Display

❶ Current Temperature
❷ Temperature Unit (°C or °F)
❸ Heating Power Level
❹ Heat “On” Indicator
❺ Set Temperature

Location of Buttons

A Down Button
B Up Button

Selecting the Temperature Unit (°C or °F)

This thermostat features an adjustable display setting that can display the temperature in either Celsius or Fahrenheit.

• To enter the setting mode, press the UP and DOWN buttons at the same time for 3 seconds. The screen will display CR (cycle rate) and a number on the bottom pane along with the Fahrenheit or Celsius temperature reading on the top pane.
• Press the UP button to toggle between the °C or °F display.

Note: The default temperature unit is °C.
Every time the temperature unit is changed, the thermostat will revert to the default temperature setting: 20.0°C or 68.0°F

Selecting the Heat Cycle Rate

To provide precise, consistent and economical heating, this thermostat has an adjustable heat cycle rate. The cycle rate determines the on/off time cycles that the thermostat uses to reach and maintain the desired temperature.

Certain cycle rates are more efficient when used with certain types of electric heating systems. Selecting the correct cycle rates help maintain an even temperature, which has been proven to reduce energy usage while improving comfort.

While it is still in the Setting mode, press the DOWN button to toggle between the various CYCLE RATES. There are 3 different cycle rates to choose from:

Cr

|

Cycle Rates

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Cr-0

|

OFF (fixed span)

Cr-1

|

20 seconds

Cr-2

|

240 seconds (4 minutes)

Cr 0 is a fixed span (no cycling), with a variance of +/- 0.3°C (+/- 0.6°F). The heating unit
will operate at full power and the power bar will appear full. This function is for users who
do not want their electric heating devices turning on and off frequently. This is the recommended setting for fan-assisted electric heating devices.

Cr 1 (Default) is a 20 second cycle rate with proportional heating. This means the heating will be turned on and off once every 20 seconds to provide a stable room temperature. This cycle rate allows a proportional level of power to the heating device. This is indicated on the thermostat display by the power bar which will be partially filled; indicating the amount of power going to the heater. This setting is recommended for non-fan assisted baseboards and electric heating devices and will provide the most energy efficient heating and a stable temperature.

Cr 2 is a 240 second span. This means the heating will be turned on and off once every 240 seconds. This is the recommended setting for fan assisted heaters, radiant ceilingsand convectors.

Adjusting the Desired Set Temperature

The current /room temperature (A) is normally displayed on the LCD screen. To adjust the setting to the desired set temperature, press the UP (C) or DOWN (B) button.

• The temperature can be set in increments of 0.5°C or 0.5°F.
• The temperature setting range is from 5°C to 35°C (41°F to 95°F.)

Tip : Press and hold the UP or DOWN button to change the setting more rapidly

Heating Power Level Display

When the thermostat activates the heating system, the Heat “On” symbol will appear. Equipped with an intelligent proportional regulation system, this thermostat will determine the amount of power needed by the electric heater to maintain the room temperature at precisely the set temperature. The “Power Bar” (A) will indicate the current output power level. 1 BAR = 20% and 10 BARS = 100%

Troubleshooting

• Make sure the thermostat is fully installed.
• Check that the power supply has been reconnected at the circuit breaker or fuse.
• If the heater or heating appliance has a power switch of its own, check to see that it is in the ON position.

The thermostat housing feels hot to the touch| When working at full capacity, the thermostat housing may reach a temperature of approx. 45°C to 50°C (113°F to 122°F). This is normal and does not affect the operation of the thermostat. The thermostat is rated to operate safely at these temperatures; ensure that the thermostat is not near heat sensitive or flammable materials such as exposed wood or wallpaper.
LCD bottom pane is blinking| If no button is pressed for 16 seconds, the display will automatically return to the “current temperature mode.”
Temperature setting will not change| Make sure the temperature is set to the acceptable range: 5°C to 35°C (41°F to 95°F.)

Limited 2-Year Warranty

This product, excluding battery, comes with a two-year (2) warranty against manufacturer’s defects in workmanship and material. The warranty allows for repair or replacement product at Dimplex’s discretion. Dimplex accepts no liability for labour related costs. (Note: Shipping and handling charges are not included under this warranty).

The product is not guaranteed against wear or breakage due to misuse and/or abuse.

To make a determination as to the serviceability of the unit, please contact our Technical Support Department at 1-888-346-7539 (Hours of Operation: 8:30AM to 4:30PM EST, Monday to Friday) or via email at www.dimplex.com/customer_support.

Should it be determined that a replacement is required, arrangements will be made as to the return or disposal of the original unit and the shipping of the replacement unit.

IMPORTANT NOTICE

TO ENSURE THE SAFE INSTALLATION AND OPERATION OF YOUR THERMOSTAT, IT IS STRONGLY RECOMMENDED THAT IT BE INSTALLED BY A CERTIFIED ELECTRICIAN. The manufacturer assumes no liability or responsibility whatsoever for incorrect wiring or any damages resulting thereof. Improper installation voids this warranty.

| This product is for use with high voltage system (120V~240V) with a minimum load of 300W ; it is not designed for use with low voltage (24V) central heating & air conditioning systems or wall mounted furnaces.
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**Contact us at:**

www.dimplex.com/customer_support
For Troubleshooting and Technical Support
OR
Toll-Free 1-888-DIMPLEX (1-888-346-7539)
Monday to Friday 8:00 a.m. to 4:30 p.m. EST
Please have your model number and product serial number ready.

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