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500650

400-115-015-D 20/12/06 2/2

6.3

Floor Temperature Limits (AF mode only)

NOTE

: To avoid damaging your floor, follow your floor supplier’s rec-

ommendations regarding floor temperature limits.

The minimum and maximum floor temperature limits are 41 °F (5 °C)
and 82 °F (28 °C) by default. To modify these limits, proceed as fol-
lows:

Switch the thermostat to Standby.

Press and hold the button.

Switch the thermostat back to On.

Release the button when the minimum temperature
limit (

FL:LO

) appears.

Set the minimum temperature limit using the

buttons.

Press the button to display the maximum
temperature limit (

FL:HI

Set the maximum temperature limit using the

buttons.

Press

Mode/Ret

to exit.

The thermostat has 3 modes of operation.

7.1

Automatic Mode

The thermostat follows the programmed schedule. To place the ther-
mostat in this mode, press

Mode/Ret

until is displayed. The data of

the current schedule period are also displayed.

Temporary Bypass

If you modify the setpoint temperature (by pressing the

, or

button) when the thermostat is in automatic mode, the new tempera-
ture will be used until the beginning of the next period. flashes dur-
ing the bypass. You can cancel the bypass by pressing

Mode/Ret

Programmed Schedule

The schedule consists of 4 periods per day which represents a typi-
cal week day. You can program the thermostat to skip the periods
that do not apply to your situation. For example, you can skip periods
2 and 3 for the weekend.

The Comfort ( ) temperature is used in periods 1 and 3 and the
Economy ( ) temperature is used in periods 2 and 4. For example,
when the period changes from 1 to 2, the setpoint automatically
changes from Comfort ( ) temperature to Economy ( ) temperature.
You can have a different program for each day of the week; i.e., each
period can start at different time for each day of the week. The
thermostat has been programmed with the following schedule.

To modify the schedule:

Press

Pgm

to access the programming mode. Period 1 is

selected.

Press

Day

to select the day to program (hold for 3 seconds to

select the entire week).

Press

Hour

and

Min

to set the start time of the selected period,

or press

Clear

if you want to skip the period (--:-- is displayed).

Press

Pgm

to select another period, or press

Day

to select

another day. Then repeat step 3.

Press

Mode/Ret

to exit the programming mode.

NOTE:

If no button is pressed for 60 seconds, the thermostat will

automatically exit the programming mode.

7.2

Manual Mode

The programmed schedule is not used. The temperature must be set
manually. To place the thermostat in this mode:

Press

Mode/Ret

until is displayed.

Set the temperature using the

, or button.

7.3

Vacation Mode

In this mode, the thermostat is set to Vacation temperature. There
are two ways to place the thermostat in Vacation mode:

By pressing the button on the thermostat. When the Vacation
mode is activated using the button, the icon appears on the
screen without flashing.

From any remote control device equipped with a dry contact.
When the contact closes, the Vacation mode is activated and the

icon flashes on the screen. All buttons on the thermostat are

locked. When the contact opens, the thermostat returns to the
preceding mode.

NOTE

: When the Vacation mode is activated using a remote

control device, it can only be deactivated using the device

The measured temperature is below the thermostat’s display
range. Heating is activated.

The measured temperature is above the thermostat’s display
range. Heating is deactivated.

Verify the thermostat and sensor connections.

Power supply

: Refer to the power base’s installation guide.

Display range

: 32 °F to 158 °F (0 °C to 70 °C)

Ambient setpoint range (A/AF modes)

: 40 °F - 86 °F (5 °C to 30 °C)

Floor setpoint range (F mode)

: 40 °F - 104 °F (5 °C to 40 °C)

Floor limit range (AF mode)

: 40 °F - 104 °F (5 °C to 40 °C)

Display resolution

: 1 °F (0.5 °C)

Operating temperature

: 32 °F to 120 °F (0 °C to 50 °C)

Storage temperature

: -4 °F to 120 °F (-20 °C to 50 °C)

Heating cycle length

: Refer to the power base’s installation guide

Data backup

: In the event of a power failure, most settings are

saved. Only the time must be re-adjusted if the power failure lasts
more than 6 hours. The thermostat will return to the mode that was
active prior to the power failure.

WATTS RADIANT, INC. ONE (1) YEAR LIMITED WARRANTY

This product is warranted against material defects and workmanship
in normal use for a period of one year, from the date of the original
purchase from authorized dealers. During this period, Watts Radiant,
Inc. will replace the product or refund the original cost of the product
at Watts Radiant option, without charge, any product proven defec-
tive in normal use.
This warranty does not cover transportation costs. Nor does it cover
a product subjected to misuse or accidental damage. This warranty
does not cover the cost of installation, diagnosis, removal or reinstal-
lation.
This limited warranty is in lieu of all other warranties, obligations or
liabilities expressed or implied by the company. In no event shall
Watts Radiant, Inc. be liable for consequential or incidental damages
resulting from installation of this product. Some states or provinces
do not allow limitations on how long an implied warranty lasts, or the
exclusion or limitation of incidental or consequential damages, so the
above exclusions or limitations may not apply to you. This warranty
gives you specific legal rights and you may also have other rights
which vary from state to state.
The defective product and the original sale receipt must be returned
to the original dealer.

Watts Radiant, Inc.
4500 E. Progress Place
Springfield, MO 65803-8816

If you have any questions concerning the installation or programming
of this product, please call our technical assistance at

800-276-2419

Modes of Operation

Period

Description

Associated temperature setting

Wake-up

Away from home

Return home

Sleep

Period

Setting

6:00
a.m.

8:30
a.m.

--:--

5:00
p.m.

--:--