Dimplex HTC621W User manual
Owners Manual
HTC621W
7-Day Programmable Thermostat 3600W
HTC625W
7-Day Programmable Thermostat 4000W
7213110100R02
2
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
• CSAC828PerformanceCertied
• 7 day programming with 4 settings per day
• High Power up to 4000W (HTC625W only)
• Ideal for baseboard heaters, convectors, radiant ceilings and electric fan-forced
heating systems
• Temperature setting and display in °C or °F
• Precise temperature control set in half degrees
• TRIAC system (quiet operation)
• Cycle rates for proportional heating
• Usage Monitor (tracks total run time)
• Maximum temperature limit set point feature
• Pre-comfort recovery system (begins to warm up before preset time)
• Room Temperature and Set Point Temperature display
• Heating Power Level display
• Clock display in 12 or 24-hour format
• Backlit LCD screen
• Internal Rechargeable backup for clock and settings
• Built-in surge protection
• Setting range: +5°C to +35°C (41°F to 95°F)
• Simple 2-wire installation
Specications - Rating: 120V~240V AC, 60Hz
HTC621W Maximum Load: 15A, 3600W @ 240V, 1800W @ 120V
HTC625W Maximum Load: 16.7A, 4000W @ 240V, 2000W @ 120V
Minimum Load: 300W @ 240V
3
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 condi-
tioning systems or wall mounted furnaces.
Inordertoavoidre,shockordeath,shutoffpowersupplyatthecircuitbreakeror
fuse and test that the power is off before wiring.
This product must be installed in accordance with the Canadian Electrical Code, and
intheprovinceofQuebec,byaqualiedelectrician.Dimplexassumesnorespon-
sibility 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-
edloadrange.
• Conrmvoltageiswithinthedevicerating.
• For wiring, use copper conductors only.
• Mustbemountedonacertiedelectricalbox.
Keep this manual in a safe place for future reference.
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.
4
Step-by-step Installation ..........................................5
LCD Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Location of Buttons ..............................................8
Option Settings .................................................9
Option 1: Choosing 12- or 24-hour Format .........................9
Option 2: Selecting the Heat Cycle Rate ...........................9
Option 3: Enabling the Pre-Comfort Recovery Feature ............... 11
Option 4: Selecting the Temperature Unit (°C or °F) .................12
Setting Time and Day ...........................................12
Program Periods ...............................................13
Samples of Temperature Settings ..................................14
Default Setting ..............................................14
Custom Setting .............................................14
Setting Program Schedules.......................................15
Copy Program Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Restoring Default Programs and Options ............................17
Temporary Temperature Override ..................................17
Hold Function .................................................18
Heating Power Level Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Usage Monitor .................................................19
Memory Back-Up...............................................19
High Limit Function .............................................20
Troubleshooting................................................21
Limited 2-Year Warranty .........................................23
Table of Contents
5
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. Refer 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.
6
*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 either the 2
right holes or the 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
7
LCD Display
8
Location of Buttons
9
Option Settings
This thermostat has 5 OPTION settings that you can change. The OPTION data will appear
on the lower pane of the screen.
Option 1: Choosing 12- or 24-hour Format
• PressandholdSETfor3secondstoentertheOptionSettingmode.willash
on screen. (Note: The 12-hour format is the default setting.)
• Press or to toggle between the 12- and 24-hour format.
Option 2: 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.
Certaincycleratesaremoreefcientwhenusedwithcertaintypesofelectricheating
systems. Selecting the correct cycle rates help maintain an even temperature, which has
proven to reduce energy usage to reduce energy usage while improving comfort.
Cr Cycle Rates
Cr-0 OFF(xedspan)
Cr-1 20 seconds
Cr-2 240 seconds (4 minutes)
10
Operation
Cr 0 isaxedspan(nocycling),withavarianceof+/-0.3°C(+/-0.6°F).Theheatingunit
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
thethermostatdisplaybythepowerbarwhichwillbepartiallylled;indicatingtheamount
of power going to the heater. This setting is recommended for non-fan assisted baseboards
andelectricheatingdevicesandwillprovidethemostenergyefcientheatingandastable
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.
1. While it is still in the Options Setting mode, press SET again to advance to the
secondoption(CR:1willashonscreen).
2. Press or to select the cycle rate
Option 2: Selecting the Heat Cycle Rate . . . continued
This manual suits for next models
3
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