Dimplex HTC521W User manual

Owners Manual
HTC521W
Non-Programmable Thermostat 3600W
HTC525W
Non-Programmable Thermostat 4000W
7213100100R01

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Congratulations on your purchase of this Dimplex line-voltage thermostat. Your new ther-
mostat 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Certied
• High Power up to 4000W (HTC525W only)
• Ideal for baseboard heaters, convectors, radiant ceilings and electric fan-
forced 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
Specications
Rating: 120V~240V AC, 60Hz
HTC521W Maximum Load: 15A, 3600W @ 240V, 1800W @ 120V
HTC525W Maximum Load: 16.7A, 4000W @ 240V, 2000W @ 120V
Minimum Load: 300W @ 240V
Keep this manual in a safe place for future reference.

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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.
Step-by-step Installation ....................................5
LCD Display / Buttons ......................................7
Selecting the Temperature Unit (°C or °F).......................8
Selecting the Heat Cycle Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Adjusting the Desired Set Temperature........................10
Heating Power Level Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Troubleshooting..........................................12
Limited 2-Year Warranty ...................................13
Table of Contents

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Installation
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.
Inordertoavoidre,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 Electri-
calCode,andintheprovinceofQuebec,byaqualiedelectrician.Dim-
plex assumes no responsibility for damages caused by improper wiring.
Improper installation automatically voids the warranty.
• Verify that the heating appliance that is being connected is
withinthespeciedloadrange.
• Conrmvoltageiswithinthedevicerating.
• For wiring, use copper conductors only.
• Mustbemountedonacertiedelectricalbox.

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Installation
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 ther-
mostat together.
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.
Remove Faceplate
To remove the faceplate, genly
pull the right side of the ther-
mostat. The faceplate should
come off easily.

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*120V~240V AC Lines
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).
Note: If mounting on a single gang box, use the two mounting holes on the left side.
5. Reconnect power supply.
Installation
Step-by-step Installation . . . continued

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Operation
❶ Current Temperature
❷ Temperature Unit (°C or °F)
❸ Heating Power Level
❹ Heat “On” Indicator
❺ Set Temperature
LCD Display / Buttons
LCD Display Location of Buttons
A Down Button
B Up Button
❷
❸❹
❺
❶
AB

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Operation
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efcientwhenusedwithcertaintypesofelectricheatingsys-
tems. Selecting the correct cycle rates help maintain an even temperature, which has been
proven to reduce energy usage while improving comfort.

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Operation
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
Cr-0 OFF(xedspan)
Cr-1 20 seconds
Cr-2 240 seconds (4 minutes)
Cr 0 isaxed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 recom-
mended 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lled;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efcient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 ceilings
and convectors.
Selecting the Heat Cycle Rate . . . continued

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Operation
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.
A
BC

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Operation
Heating Power Level Display
When the thermostat activates the heating system, the Heat “On” symbol will ap-
pear. Equipped with an intelligent proportional regulation system, this thermostat will deter-
mine 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%
A

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Problem Solution
The LCD screen is blank or
abnormal
• 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 tem-
peratures; ensure that the thermostat is not near heat
sensitiveorammable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.)
Troubleshooting

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Limited 2-Year Warranty
This product, excluding battery, comes with a two-year (2) warranty against manufac-
turer'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 ELECTRI-
CIAN. 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.