Miller Optima Wifi Basic User manual

Thermostat Optima Wifi Basic
Thank you for purchasing our
smart thermostat Optima Wifi
Basic.
Features:
•Programmable/operatable by app
•Compatible with Amazon Alexa, Google Assistant and IFTTT
•Easy to install
•No display
•Surface mounting
•Weekly program 4 switching times per day (App)
•External sensor or room sensor
•Open window detection only with room sensor
Technical data:
•Operating voltage: 230V/AC
•Switching capacity: 2000W/8A (resistive load) / 1000W/4A (capacitive load)
•Switching contact: NO / NC (potential-free contact)
•Backup memory: EEPROM
•WLAN frequency: 2.4Ghz, Wi-Fi 802.11 b/g/n
•WLAN Security: WPA2 personal (TKIP and AES)
•Temperature sensor: internal or external sensor
•Open window detection: yes only with room sensor, not with connected external sensor
•Temperature setting: 5°C - 35°C (0.5°C steps)
•Operating temperature: +5 ~ 65°C
•Accuracy: +/- 0.5°C (+/- 1°F)
•Dimensions: 86mm x 86mm x 30mm
•Colour: White
•IP protection class: 21 (sensor IP44).
•Certification: CE, ROHS, WEEE

Important information before commissioning:
-Please read the complete instructions before starting to install the thermostat.
-The thermostat must be installed by a qualified person.
-Only use the thermostat as described in this manual.
-Always disconnect the power supply during installation work.
Safety notes:
When handling products which are supplied with electrical voltage, the applicable VDE regulations must be
observed, in particular VDE 0100, VDE 0550/0551, VDE 0700, VDE 0711 and VDE 0860.
- Before opening the device, make sure that it is de-energized.
- Tools may only be used on the device if it has been ensured that it is disconnected from the supply
voltage and that any residual electrical charges stored in components have been discharged beforehand.
- Live cables or lines to which the device is connected must always be checked for insulation faults or
breakages.
- If a fault is detected in the supply line, the device must be taken out of operation immediately until the
defective line has been replaced.
If these instructions is not clearly state for non-commercial end users in regard to, which electrical
characteristic values apply to the device, how external wiring is to be carried out, or which external
components or accessories may be connected and what connected loads these external components may
have, a specialist must always be requested for information. Before commissioning the device, check
whether it is suitable for the planned application!
In case of doubt, it is absolutely necessary to consult experts or the manufacturers of the modules used!
Please note that operating and connection errors are beyond our control. We assume no liability for any
damage resulting therefrom.
Description of Device keys and LEDs
1. Pairing key for pairing with the WLAN via
the Tuya app.
2. On/Off button to switch thermostat
completely off or on.
3. Status LED lights up if the load is switched
on.
4. Status LED lights up if the thermostat is
switched on.

Connecting the thermostat:
The Optima W Basic can be used for various applications, as the thermostat has a voltage-free (potential-
free) output! The external sensor is used for temperature measurement e.g. in the floor in combination
with an electric underfloor heating system.
Description Terminals
1. Input terminal for the 230V/AC supply
voltage of the thermostat
2. Output terminal for connecting the
load (potential-free), for connection
options, see "Connection of the
thermostat".
3. Input terminal to connect the external
temperature sensor

App integration and programming:
In order to setup or program the thermostat via Smartphone App, the free TuyaSmart App must first be
downloaded and installed from the respective App Store.
Minimum Smartphone requirements: iOS9 or newer, Android 4.1 or newer
TuyaSmart (Tuya Inc.)
App für Android
App für Apple iOS
The following steps show the setup of the TuyaSmart App as well as the integration and programming of
the thermostat.
When starting the app for the first time,
you have to create a Tuya user account.
Agree to privacy policy to continue.
Select your country, enter your email
address, and then tapping on "Get
Verification Code". Alternatively, the code
can also be requested by SMS by tapping
on "Mobile Phone Number" at the top.

Enter the verification code you received by
e-mail or SMS.
Set the password for the Tuya user
account and press "Finish".
Now the thermostat can be integrated by
touching "Add device".
To integrate a thermostat, tap on "Small
Home Appliance" on the left and then
select "Thermostat" on the right.
Set the thermostat to teach-in mode: Press
the Pairing Key on the thermostat for
approx. 3 seconds until. The Status LED
„Heating On“ should now flash and the
thermostat is in learning mode.
Select the WLAN network (SSID) of the
existing router and enter the
corresponding WLAN password.

The app now searches for devices that are
in learning mode.
If a device was found, a name can now be
assigned. After touching "Done", the
integration of the thermostat is
successfully completed.
The picture shows the main view of the
thermostat. The setpoint temperature is
displayed in the middle and the current
room temperature below it. The setpoint
temperature can be adjusted manually
using the Plus/Minus button. The functions
of the "Switch", "Mode", "Settings" and
"Pen symbol" buttons are explained in
Figs. 13, 14, 15 and 18.
The thermostat can be switched off or on
by touching the "Switch" button.
By touching "Mode" the operating mode
of the thermostat can be changed
(Manual/ECO/Program).
By touching "Settings" you can set the
parental control, the weekly program (fig.
16) and the timer (fig. 17).

An individual heating profile can be stored
for each day of the week.
Here different timers can be programmed
for time-controlled switching on and off.
Shows further settings and integration
options in the voice control systems
Amazon Alexa and Google Assistant.
Standard values:
The thermostat operates internally with the following standard values. It is not possible to change these
values.
Nr.
Function
Adjustment
range
Standard value
01
Room sensor Temperature Offset
-
0°C
02
Max. temperature
-
35°C
03
Min. temperature
5°C
04
Internal or external sensor
-
If an external sensor is connected, the
internal sensor is not active.
05
Antifreeze Temperature
-
5°C
09
Hysteresis
-
0°C
12
ORD function (detection of open
windows)
-
ON (active for room sensor)
13
ORD detection time
30 seconds
14
ORD Temperature difference
selection (in the recorded time)
-
2°C
15
Delay time for ORD selection
(return to normal state)
-
2min
3140
Software-Version
0110

Disposal notes
Do not dispose of this device in household waste! Electronic devices must be
disposed of at the local collection points for electronic waste in accordance with
the Waste Electrical and Electronic Equipment Directive.
Note on conformity
The CE mark is a free trade mark that is exclusively addressed to the authorities
and does not contain any assurance of properties.
Documentation © 2019 Mi-Heat Heizsysteme GmbH
All rights reserved. No part of this manual may be reproduced in any form or by any means without the
written permission of the publisher. This manual may contain typographical defects or misprints. We
assume no liability for technical or printing errors and their consequences.
V1.0 (09/2019)
Mi-Heat Heizsysteme GmbH
Ol Streek 39a
26607 Aurich
Deutschland
Internet: mi-heat.de
E-Mail: [e-mail]