CENTRAL HEATING SmartOne User manual
0800 357 1233 | info@centralheating.co.nz | trade.centralheating.co.nz Page: 1 of 2
Advanced Start Up
Guide
• Ensure the thermostat back plate is wired
as per the below wiring diagram and cables
are adequately inserted and secured into the
terminals. When xing back plate o to ush box
ensure cables are not being pinched or damaged.
• Please be aware when using a SmartOne
thermostat in conjunction with a Chofu heat
pump, the live on/o and heating/cooling
outputs are 230V. An external relay is required to
close the low voltage contacts on the heat pump.
• Power up the SmartOne thermostat and follow
the prompts through to the menu. Press the
symbol in the upper right hand corner of the
screen for Network > WiFi > Scan Network >
Select network (2.4GHz only) > Enter correct
password > Conrm. Now the thermostat is
connected to the WiFi it will update to the latest
software version.
• Press the in the upper right hand corner of
the screen and navigate to Settings. Using the
passcode 264408 you can enter the Advance
Settings menu.
• Under Setup you can select the type of control
the thermostat is going to manage. Heating
Only, Heating and Cooling or Cooling Only.
Factory setting is Heating and Cooling. If the
type is changed the thermostat will restart.
SmartOne Controller
Wiring diagram (backplate)
0-10V RH% Output*
Floor Sensor (NC10k)
A OUT
SENS2
SENS1
GND
RS485 A
RS485 B
Switched Live
Switched Live
Live 230V AC
Neutral
N
L
REL 1
REL 2
Heat pump, Heating/
Cooling changover
(230V output signal)
Heat Source On/O
(230V output signal)
230V
*0-10v RH% Output is Polarity sensitive. A OUT = terminal 17;
GND = terminal 18 on Chofu terminal board.
0800 357 1233 | info@centralheating.co.nz | trade.centralheating.co.nz Page: 2 of 2
• Under Parameters > Temperature ensure
the values are set as follows:
• Switching type = On/O
• Switching Dierential = 1.0°C
• Sensor Selection, Radiators = Built In,
Underoor = Built In and Floor Sensor.
Floor sensing only also available.
• Room Temp > Sensor Oset/Calibration
= Used to calibrate the temperature
measured at the thermsotat
• Floor Temp > Min (Heating) = 20°C,
Max (Heating) = 30°C. This will
vary dependant on oor coverings.
• Floor Temp > Min (Cooling) = 15°C,
Max (Cooling) = 20°C. This will
vary dependant on oor coverings.
• Floor Temp > Sensor Oset/Calibration
= Used to calibrate the temperature
measured at the oor probe.
• Floor Temp > Dew Point Check = Disabled
• Set point > Min = 10°C, Max = 35°C. Can be
adjusted 0-99°C for various applications.
• Optimum Start/Stop = Disabled
• Factory Reset > If required the thermostat can be
set back to the default factory settings by holding
this down for 10 seconds.
Note: If Factory Reset is done the thermostat will
power on in the Stop System state, you will need
to enter the Advanced Settings menu again and
under Setup select Start System.
• Please refer to the user manual for pairing of
App, changing modes and setting up time
schedules etc.
• Note: When thermostat looses power or the
advanced menu is being access the 0-10V
humidity output will drop o. This can cause a L5
error on a Chofu heat pump using humidity input
for radiant cooling. Error must be manually reset
at heat pump controller.
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