Watts Dual Sensing Thermostat Guide

Dual Sensing Air & Floor Thermostat with sensor
Dimensions: 3-3/8" x 3-3/8" (85.7 mm x 85.7 mm)
The Watts Dual Sensing Thermostat has the ability to sense the
temperature of the air, floor or a combination of air and floor. Each Dual
Sensing Thermostat comes with an internal air sensor. The optional
external 10k sensor which allows detection of floor temperatures is
included. The external sensor does not have to be used if the Dual
Sensing Thermostat is to detect air temperatures only.
Dual Sensing Thermostat
Optional Floor Sensor (included)
Installation & Operation
To mount the thermostat remove the thermostat cover by removing the
white Screw Cover (located in the center of the thermostat cover) and
the Cover Screw. Secure the Base Unit to the wall. Be sure to feed the
electrical wiring (18-2) through the provided slot in the Base Unit and
connect to appropriate terminal block(s). Replace the Cover, Cover Screw
and Screw Cover.
If floor sensing is desired, make sure the floor sensor is connected to the
corresponding floor sensor terminals (labeled NTC, the first two terminals
on the left terminal block). It may be necessary to adjust the J6 setting.
See wiring diagrams for details.
Change batteries when the Low Battery indicator appears on the
display. Batteries can be changed before indicator appears if necessary.
Changing Values
To enter the parameter menu, press and hold the OK button for
5 seconds.
Use the +/- keys to select the installation parameter to be adjusted. Press
OK to toggle the parameter setting or to edit its value. When the value
begins to blink, use the +/- keys to adjust its value. Press OK to select the
adjusted value. Use the +/- keys to select the next parameter and repeat.
Toggle to “End” and press OK to exit the installation parameter menu.
√ Description Order #
Dual Sensing Thermostat, Air/Floor w/sensor 0955317
Description Property
Operation Voltage AA Battery
Contact 10A Relay
Sensor NTC 10K Thermistor
Static Differential 1.0ºF (0.6ºC)
Proportional 10 min. for 3.5ºF (1.9ºC)
Built-in manual setback 7.0ºF (3.9ºC)
Air Temp Range 41.0 - 99.0ºF (5.0ºC - 37.2ºC)
Floor Temp Range 41.0 - 99.0ºF (5.0ºC - 37.2ºC)
Screw Cover
Cover Screw
+/- Adjustment and
Temperature Set Buttons
Mounting Screw
Base
Digital Display
Cover
ES-Dual-Sensing-Thermostat
For Residential or Commercial Radiant Heating Applications
Job Name ––––––––––––––––––––––––––––––––––––––––––– Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location ––––––––––––––––––––––––––––––––––––––––– Approval –––––––––––––––––––––––––––––––––––––––––––––
Engineer ––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. –––––––––––––––––––––––––––––––––––
Approval ––––––––––––––––––––––––––––––––––––––––––––– Representative ––––––––––––––––––––––––––––––––––––––––
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts
Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any
obligation to make such changes and modifications on Watts products previously or subsequently sold.
ºC ºF
10.0 50.0
15.0 59.0
20.0 68.0
25.0 77.0
30.0 86.0
35.0 95.0
!CAUTION
This Engineering Sheet is not intended to provide full installation
instructions and safety information. In order to avoid property
damage or injury, please refer to the complete installation manual
and product safety information provided with the product.

Comfort Operating Mode (Sun): Press +/- button(s) to adjust the
desired setpoint.
Night Setback Mode (Moon): Sets the operating temperature to a lower point.
Use the +/- button(s) to adjust the setback temperature.
Timer (Clock): Thermostat can be tied into an external timer to control system
operation.
Blinking sun indicates system is in Comfort Mode.
Blinking moon indicates system is in Setback Mode.
J1
°F
°C
Operating Mode Menu
(power, comfort, set-back, timer)
Heat/Cool Operation Indicator
Indicates Display is Showing
Current Temperature
Shows Measured or Set Temperature
Operation Parameter (see chart for details)
Note: Do not apply power to the relay ("dry" contact) terminals on the
Dual Sensing Thermostat. Doing so will cause damage to the thermostat.
Wall Anchor Point
"Dry" Contacts
Electrical Access
Sensor Connections
18-2
Electrical Wire
Optional External
Floor Sensor Wire
Battery
Transformer
Optional Floor Sensor
To Relay Box TT Terminals
24V Digital DualTemp
1 2 3 4
24VA
C
POW
X X
ZONE 3ZONE 1ZONE 2 ZONE 4
POWER
INPUT
ZONE 2
ZR ZC
ZONE 1 ZONE 3ZONE 4
Optional Floor Sensor
Transformer
Black
Green
White
Green
White
Black
Fusetron
To Relay Coil "B" Side To Relay Coil "A" Side
24V Digital DualTemp
ES-Dual-Sensing-Thermostat 1142 © 2011 Watts Radiant
USA: No. Andover, MA • Tel. [phone] • Fax: [phone] • radiant.watts.com
Canada: Burlington, ONT. • Tel. [phone] • Fax: [phone] • radiant.watts.com
CONTROL SETTINGS AND PARAMETERS
J0: °C/°F Temperature display section.
J1: Hot/Cold regulation mode. Select Hot for Heating, Cold for cooling.
Hot: opens actuator when temperature rises above setpoint.
Cold: closes actuator when temperature drops below setpoint.
Cy: Proportional Integral regulation time cycle, value in minutes
(default: 15 minute cycle).
This setting adjusts how frequently the control monitors the sensor
readings. Lower mass systems (frame floor applications) can lose heat
faster than high mass systems (slabs) and may require a faster cycle
time.
bp: Proportional Integral regulation band amplitude value in degrees °C/°F
(default: 2.0°C/35.6°F).
J4: NO/NC Normally Open or Normally Close actuator selection.
NC: If using an isolation relay and/or a relay box.
NO: if connecting to a Watts Zone Valve control.
J5: Select PMP (Pump Maintenance Program) to perform a 1 minute exercise
everyday.
Use this setting to allow the thermostat to cycle the circulator for 1
minute every day. This setting helps maintain lubrication during no-heat
periods.
J6: Air: Air (room) setpoint. Displays air temperature with floor low (FL) and high
(FH) limits.
Flr: Floor (external sensor) setpoint. Displays floor temperature without floor
low/high limits. Air temperature is not a control boundary.
J7: rEG (proportional Integral) or HYs (0.3°C Hysteresis) regulation type selection.
rEG is preferred setting for use with radiant applications.
HYs is preferred setting for use with forced air or other convection
systems.
Cp: Proportional Integral regulation temperature compensation value in °C/°F
(default: 2.0°C/35.6°F).
Adjusts the calibration between the displayed temperature reading and
the calibrated temperature reading. Do not adjust this value unless
necessary.
Ao: Air Sensor offset adjustment (default: no offset), display measure air sensor
value.
Adjust the display reading to match the air sensor reading.
Fo: Floor sensor offset adjustment (default: no offset), display measure floor sen-
sor value.
Adjust the display reading to match the floor sensor reading.
FL: Floor temperature LOW limitation (default: 5°C/41°F), effective only if floor
sensor present and set J6 to Air.
This setting keeps the floor from dropping below the designated tem-
perature.
FH: Floor temperature HIGH limitation (default: 28°C/82°F), effective only if floor
sensor present and set J6 to Air.
This setting keeps the floor from rising above the designated tempera-
ture.
CLr: Press OK to reset to factory defaults.
End: Press OK to exit installation parameters.
Dual Sensing Thermostat
Dual Sensing Thermostat