08-07 Effective Date 04/08 © Watts Radiant, 2008
USA: 4500 East Progress Place, Springfield, MO 65803; www.wattsradiant.com
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
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 closes 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 aplications) can loose
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/3.6°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 cylce the circulator for
1 minute every day. This setting helps maintain lubircation 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 prefered setting for use with radiant applications.
HYs is prefered setting for use with forced air or other
covection systems.
Cp: Proportional Integral regulation temperature compensation value in °C/°F
(default: 2.0°C/3.6°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
sensor 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 temperature.
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 temperature.
CLr: Press OK to reset to factory defaults.
End: Press OK to exit installation parameters.
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 indicated system is in Setback Mode.
Optional
Floor
Sensor
Digital DualTemp with Transformer and Relay
Transformer
Black
Green
White
Green
White
Black
Fusetron
24Vac Hot
Neutral
To Relay Coil "A" Side
To Relay Coil "B" Side
4 4 2 2 6 7 NTC A/B
Requires jumper between 2 & 6
Optional
Floor
Sensor
Digital DualTemp with Third Party Relay Box
To "T1" Terminal
1 2 3
4
Transformer
24VAC
X
X
ZONE 3ZONE 1ZONE 2 ZONE
4
POWER
INPUT
ZONE 2
ZR
ZC
ZONE 1 ZONE 3 ZONE
4
To "T2" Terminal
4 4 2 2 6 7 NTC A/B
R
C
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
DualTemp. Doing so will cause damage to the thermostat.
Do not apply line voltage (120 volt) power to thermostat. Applying anything other
than the recommended 24 volt power will damamge the thermostat.
