Vemer Mithos Color Wi-Fi User manual

Digital
Chronothermostat
Mithos Wi-Fi
User Manual

- 1 -
Mithos Wi-fi Chronothermostat User Manual
■Dimensions Page 3
■Connection diagram Page 3
■Safety warnings Page 4
■Technical characteristics Page 4
■Control elements / display indications Page 6
■Installation Page 8
■Initial start-up of the Mithos Wi-Fi Page 9
The app Page 13
Off-line operation of Mithos Wi-Fi Page 21
■Clock setting Page 22
■Programs setting Page 24
■Temperatures setting Page 26
■Manual operation Page 27
■Summer / winter operation Page 28
■Programmable thermostat deactivation Page 29
■Timings Page 29
■Advanced programming Page 31
■Advanced functions Page 37
■Regulation type Page 39
■Reference standards Page 40
■Winter programs Page 41
■Summer programs Page 42
Index

Mithos Wi-Fi Digital Programmable thermostat
- 2 -
Mithos Wi-fi Chronothermostat User Manual
• Comfort and control of
consumptions are ensured both in
winter and in summer (heating/air
conditioning)
• Power supply: 230 Vac
(with backup battery)
• Wall-mounting or coverage of the
503 box (3 modules)
• Remote control through app for iOS
systems and Android or from PC
• All programming occurs remotely
through app or via internet with pc/
mac
• Weekly programming with
7 different customizable programs
and 3 temperature levels
Profile of a program

DIMENSIONS
CONNECTION DIAGRAM
- 3 -
Mithos Wi-fi Chronothermostat User Manual
1
2
3
4
5
6
7
230V ~
Input for
COM
NO
NC
N
L
X.Temp or DIG
T3
T2
T1
132 36
95
T3
T2
T1
132 36
95

SAFETY WARNINGS
TECHNICAL CHARACTERISTICS
- 4 -
Mithos Wi-fi Chronothermostat User Manual
■During installation and operation of the product, it is necessary to comply
with the following instructions:
1) The instrument must be installed by a skilled person, in strict compliance with
the connection diagrams.
2) Do not power on or connect the instrument if any part of it is damaged.
3) After installation, inaccessibility to the connection terminals without
appropriate tools must be guaranteed.
4) The instrument must be installed and activated in compliance with current
electric systems standards.
5) Before accessing the connection terminals, verify that the leads are not live.
6) In the electrical system of the building where the instrument must be
installed, a protection device from the overcurrents must be present
• Power supply: 230 V AC ( -15% ÷+10%) 50/60Hz
• Charge reserve: 1 hour about thanks to the backup battery
• Backup battery: rechargeable AA NiMH type, capacity 2000 mAh or higher
 Use rechargeable NiMH batteries only
• Auxiliary configurable input to whom to connect alternatively:
– a not powered contact (DIG)
– an external temperature probe X.Temp
■The Mithos Wi-Fi is an electronic weekly programmable thermostat with wi-fi
connection to manage your heating/cooling system.
The integrated wi-fi module allows to connect the Mithos Wi-Fi to home router and so
to internet. Once connected, it’s possible to program the Mithos Wi-Fi also when you
are out of your home through app (available for iOS-Apple systems and Android) or via
internet from pc/mac.
Code Model Description
VE612800 Mithos Wi-Fi Bianco White wi-fi weekly programmable thermostat
VE705000 Mithos Wi-Fi Nero Black wi-fi weekly programmable thermostat
VE323200 FR.Mithos Silver painted front panel

- 5 -
Mithos Wi-fi Chronothermostat User Manual
• Output:
– bistable relay with change-over contact 8A / 250 V AC
• Type of action: 1B
• 5 temperature settings:
- T3, T2,T1 for automatic regulation
- T0 antifreeze temperature settable in advanced programming
- T temperature in manual operation
• Temperature regulation:
- ON/OFF with differential settable between 0.1°C and 1°C
- PROPORTIONAL with settable proportional band and regulation period
• Weekly programming
• Daily resolution: 1h
• Activation delay settable between 15, 30 or 45 minutes (independent for each hour)
• Measured temperature scale:
– 0°C ÷ +50°C (internal probe)
– -40°C ÷ +60°C (external probe)
• Measured and displayed temperature resolution: 0.1°C
• Temperature regulation range: 2.0°C ÷ +35°C
• Measurement update: every 20 seconds
• Measurement precision: ± 0.5°C
• Heating (winter) or cooling (summer) operation
• Automatic change CET / DST
• Password protected keypad lock for installation in public places
• Wall mounting (or on 503 type box)
• Terminal strips:
- Output: 3 poles 1.5 mm
2
for bistable relay
- Input: 2 poles 1.5 mm
2
for external probe or digital input
2 poles 1.5 mm
2
for power supply connection
• Operating temperature: 0 °C ÷ +50 °C
• Operating humidity: 20% ÷ 90% noncondensing
• Storage temperature -10°C ÷ +65°C
• Degree of protection: IPXXD
The preset temperature values (expressed in °C) are the following:
funct. winter funct. summer
T1 5.0 OFF
T2 15.0 23.0
T3 18.0 25.0
TMANUAL 20.0 24.0
Regulation of temperature levels is subjected to the following condition: T1 ≤ T2 ≤T3.
In summer mode, T1 cannot be set and corresponds to the air conditioning OFF.

CONTROL ELEMENTS / DISPLAY INDICATIONS
- 6 -
Mithos Wi-fi Chronothermostat User Manual
➔
5
➔
10
➔
2
➔
1
➔
3
➔
4
➔
6
➔
9
➔
11
➔
12
➔
13
➔
8
➔
7
■Control elements
1) “ ” Key: manual operation
2) “ ” Key: increases the selected field
or displays the daily maximum
temperature
3) “ ” Key: decreases the selected field
or displays the daily minimum
temperature
4) “ ” Key: confirms the set data
5) “ ” Key: activation and deactivation of the programmable thermostat
6) “ ” Key: selects temperature T3
7) “ ” Key: selects temperature T2
8) “ ” Key: selects temperature T1
9) “ ” Key: allows to set a timer or an activation delay
10) “ ” Key:programs setting or advanced programming
11) “ ” Key: clock setting
12) “ ” Key: winter operation (preset) or summer operation (the key is reachable
only with a point)
13) “ ” Key: instrument reset (according to the type of reset it’s followed by the
press of another key)
(the key is reachable only with a point)

- 7 -
Mithos Wi-fi Chronothermostat User Manual
■Display indications
14) “Day” Field
15) “External temperature” Field
16) “Environment temperature” Field
17) “Set program” Field
18) “Manual operation activation” Field
19) “Timings” Field
20) “Air conditioning activation” Field
21) “Heating activation” Field
22) “Clock” Field
23) “Data in progress updatel”
Field
24) “Connection to internet on” Field
25) “Unit of measurement”
(°C only) Field
26) “Off” Field
14 24 19
16
26
22
21
20 18
15
25
17
23

INSTALLATION
- 8 -
Mithos Wi-fi Chronothermostat User Manual
• Extract the instrument from the box
and fasten it to wall using the provided
screws. Place it at about 150 cm from the
floor at a point of the room that reflects
the average conditions of the whole
environment, or away from doors or
windows, from heat sources away from
direct radiation.
• Insert the rechargeable battery and make
the connections respecting the diagram
on page 3.
• Power the instrument.

- 9 -
Mithos Wi-fi Chronothermostat User Manual
INITIAL START-UP OF THE MITHOS Wi-Fi
The necessary procedure to prepare the Mithos Wi-Fi to remote operation consists of three
steps, described below.
1. MITHOS Wi-Fi CONNECTION TO INTERNET
1.1. Press the key “R” and immediately after (within 3 seconds) the key “ ”.
The display is as follows:
1.2. Wait for the icons and stop flashing and become
fixed lit (after about one minute)
1.3.
With the help of a smartphone (or pc or mac) equipped with
Wi-Fi connection, start the search of Wi-Fi networks and connect to Mithos network
1.4. Access through browser (Internet Explorer, Safari, Mozilla,…) of your smartphone
the address http://192.168.1.1.
1.5. Enter the parameters of your home network and click “Configure”:
– SSID: name of your Wi-Fi network
– PSK: password of your Wi-Fi network (requested only if the box “Security” is
ticked)
Data insertion of home network Confirmation answer sent by Mithos
1.6. Press the key “R”. The icon flashes: wait about 20 seconds until it stops
flashing and becomes fixed lit (simultaneously the icon starts flashing).
At this point the Mithos Wi-Fi is connected to internet.

- 10 -
Mithos Wi-fi Chronothermostat User Manual
2. CREATION OF YOUR ACCOUNT
After connecting the Mithos Wi-Fi to internet it’s necessary to create a personal account
to which to associate all Mithos Wi-Fi that you want to control.
2.1. Access the store of your smartphone/tablet, install and start the free app
Vemer-Mithos Wi-Fi
2.2. Choose “Register” to create a new account
2.3. Fill in the fields and confirm. The system sends an email to the specified address
with the link to confirm the activation of the account.

- 11 -
Mithos Wi-fi Chronothermostat User Manual
3. ASSOCIATION MITHOS / ACCOUNT
The last phase expects to associate the Mithos Wi-Fi to the created account.
3.1. Go to the page of PIN configuration of Mithos Wi-Fi (see “What is the pin” on
page 12).
3.2. Start the app, enter the username (email address) and password chosen during
registration phase and press “Access”
3.3. Press “Add Thermostat” to add a new Mithos Wi-Fi.
Enter the following data and press “Save”:
– Serial (PIN)
– A name which identifies the Mithos Wi-Fi (enter a name you like.
For example: if it is a Mithos Wi-Fi installed in office, a possible name could be
“Mithos Office”)
– An image which will appear as background during the use of the app

- 12 -
Mithos Wi-fi Chronothermostat User Manual
What is PIN
The serial (PIN) is a number of 4 digits generated automatically by Mithos Wi-Fi.
To view it:
– press the key “PRG” for at least 3 seconds to access the menu or advanced
programming
– press several times the key “ ” until reaching the page of PIN
3 s
d1f 0ff adj Est Sns
The start-up is complete. From now on the icon
is on to indicate that Mithos Wi-Fi
is connected to internet while the icon
lights up only during the data exchange
between Mithos Wi-Fi and app (usually once a minute).

- 13 -
Mithos Wi-fi Chronothermostat User Manual
THE APP

- 14 -
Mithos Wi-fi Chronothermostat User Manual
Page “Login”
Page “Mithos List”
Pagina “Elenco Mithos”
The APP Mithos Wi-Fi allows you to control remotely and in a simple way your chrono-
thermostat Mithos Wi-Fi.
Access using the access credentials (email,
password) chosen during registration phase of your
account (see on page 10).
From this screen it’s possible to choose which
Mithos Wi-Fi to control.
: allows you to record a new Mithos
Wi-Fi to control.
: allows you to group several
Mithos Wi-Fi in the same directory (for example it’s
possible to group several Mithos Wi-Fi in a building
of 3 floors according to the logic “Floor 1”, “Floor
2” and “Floor 3”).

- 15 -
Mithos Wi-fi Chronothermostat User Manual
Main Page
This screen shows the status of Mithos Wi-Fi:
: indication of the measured
temperature (18.9°C) by the internal probe (INT), of
the operating mode (HEATING) and of the status of
the heating system
(flame red = heating on,
flame grey = heating off).
: operating mode.
Touch to change the operation (heating or cooling)
and the mode (automatic, manual or off).
: setpoint currently programmed and
name of the running program.
Touch to change the running program.

- 16 -
Mithos Wi-fi Chronothermostat User Manual
How to associate a program
From the screen “Programs list” it’s possible:
: to create a new program
: to select, to modify, to delete or to rename
an existing program
Note: the padlock next to the program WINTER
DEFAULT indicates that the program can not be
modified or deleted.
Programs list

- 17 -
Mithos Wi-fi Chronothermostat User Manual
To modify an existing program, select the day to be modified. On the screen that opens,
assign at any time of day one of the three available temperature levels (marked by
blue, green and red colours).
Created a program for a day, it’ s possible to copy it to any other day of the week
(“Copy” function).
Note: the image refers to the version of the app for smartphone.
On the tablet the whole weekly programming is visible on a single screen.
Modify a program

- 18 -
Mithos Wi-fi Chronothermostat User Manual
Mithos settings
MENU
Touch the symbol in the upper right to access the advanced menu.
From this screen it’s possible:
- to change the name of the Mithos Wi-Fi
- to change the image that identifies it
- to change the temperature values for automatic
operation
- to modify advanced settings
(alarm setting, temperature regulation mode,
input configuration).