Vemer VE312500 User manual

Cronotermostato
Digitale
Mithos
Manuale d’Uso
User Manual
DIGITAL PROGRAMMABLE THERMOSTAT

English
- 31 -
Mithos Programmable Thermostat User Manual
■Assembly Page 33
■Dimensions Page 34
■Connection diagrams Page 34
■Safety warnings Page 35
■Technical characteristics Page 35
■Control elements / display indications Page 37
■Initial start-up / Reset Page 39
■Clock setting Page 39
■Programs setting Page 41
■Temperatures setting Page 43
■Manual operation Page 44
■Summer / winter operation Page 45
■Keypad On-Off command Page 46
■Timing Page 46
■Advanced programming Page 48
■Advanced functions Page 53
■Regulation type Page 56
■Battery replacement Page 57
■Reference standards Page 58
■Winter programs Page 59
■Summer programs Page 60
)NDEX

English
- 32 -
Mithos Programmable Thermostat User Manual
-ITHOS$IGITAL0ROGRAMMABLETHERMOSTAT
s 0OWERSUPPLYX6BATTERY
!!TYPEALKALINE
s #OMFORTANDCONTROLOF
CONSUMPTIONSAREENSUREDBOTHIN
winter and in summer (heating/air
conditioning)
s)NTERCHANGEABLESILVERCOLOREDFRONT
PANELAVAILABLEASACCESSORY
CODE6%
s )NSTALLATIONCANBEWALLORBOX
COVERAGEMODULES
s $ISPLAYOFTHEOPERATIONSTATUSTIME
DAYANDINTERNALAND
EXTERNALTEMPERATURE
s 7EEKLYPROGRAMMINGWITHTHREETEMPERATURE
VALUESCONTROLLABLEDURINGTHEDAY
4 ª#
4ª#
4ª#

English
- 33 -
Mithos Programmable Thermostat User Manual
!33%-",9
s It is advisable to place the programmable
thermostat in an area that mirrors, as much
as possible, the conditions of average
temperature of the entire environment.
Avoid installing too close to doors, windows,
heat sources, direct sunlight radiation, and
positions with excess or total lack of air inlet.
It is moreover advised to install the
environment programmable thermostat at
about 150 cm from the floor.
Assembly can be wall or box 503 coverage

English
- 34 -
Mithos Programmable Thermostat User Manual
DIMENSIONS
T3
T2
T1
132
95
26
CONNECTION DIAGRAM
1
2
3
4
5
6
7
X.Temp
X.Code
COM
NA
NC

English
- 35 -
Mithos Programmable Thermostat User Manual
■$URINGINSTALLATIONANDOPERATIONOFTHEPRODUCTITISNECESSARYTOCOMPLY
WITHTHEFOLLOWINGINSTRUCTIONS
 4HEINSTRUMENTMUSTBEINSTALLEDBYASKILLEDPERSONINSTRICTCOMPLIANCEWITH
the connection diagrams.
 $ONOTPOWERONORCONNECTTHEINSTRUMENTIFANYPARTOFITISDAMAGED
!FTERINSTALLATIONINACCESSIBILITYTOTHECONNECTIONTERMINALSWITHOUT
APPROPRIATETOOLSMUSTBEGRANTED
4HEINSTRUMENTMUSTBEINSTALLEDANDACTIVATEDINCOMPLIANCEWITHCURRENT
ELECTRICSYSTEMSSTANDARDS
"EFOREACCESSINGTHECONNECTIONTERMINALSVERIFYTHATTHELEADSARENOTLIVE
TECHNICAL CHARACTERISTICS
s Power supply: 1x1.5V AA stilo alkaline battery
s "ATTERYLIFEABOUTMONTHS
s #HARGERESERVEMINUTEFORBATTERYREPLACEMENT
s "ATTERYCHARGELEVELINDICATION
s !UXILIARYINPUTS
- telephone activator
- X.Temp external probe signal
s /UTPUT
- bistable relay with change-over contact 8A / 250V AC
s TEMPERATURESETTINGS
- 4, 4,4 for automatic regulation
- 4 antifreeze temperature setting in advanced programming
- T temperature in manual operation
3!&%497!2.).'3
■Mithos is an electronic wall-mounting weekly programmable thermostat that executes
B1 type actions with a class A software and is suitable for environments with a pollution
degree of 2 and overvoltage category III (EN 60730-1).
 #ODE -ODEL $ESCRIPTION
 6% Mithos Black
Wall-mounting weekly programmable thermostat
6% Mithos White Wall-mounting weekly programmable thermostat
6% FR.Mithos Silver painted front panel

English
- 36 -
Mithos Programmable Thermostat User Manual
s4EMPERATUREREGULATION
- ON/OFF with differential setting between 0.1°C and 1°C
- PROPORTIONAL with proportional band and regulation period setting
s7EEKLYPROGRAMMING
s$AILYRESOLUTIONH
s !CTIVATIONDELAYSETTINGBETWEENANDMINUTESINDEPENDENTFOREVERYHOUR
s-EASUREDTEMPERATURESCALE
– 0°C ÷ +50°C (internal probe)
– -40°C ÷ +60°C (external probe)
s-EASUREDANDDISPLAYEDTEMPERATURERESOLUTIONª#
s4EMPERATUREREGULATIONRANGEª#ª#
s-EASUREMENTUPDATEEVERYSECONDS
s-EASUREMENTPRECISION¢ª#
s7INTERORSUMMERORMANUALOPERATION
s/PTIONALDISPLAYINª&
s!UTOMATICCHANGE#%4$34
s0ASSWORDPROTECTEDKEYPADLOCKFORINSTALLATIONINPUBLICPLACES
s7ALLMOUNTINGORONTYPEBOX
s4ERMINALSTRIPS
- Output: 3 poles 1.5mm
2
for bistable relay
- Input: 2 poles 1.5mm
2
for external probe
2 poles 1.5mm
2
for connection to telephone activator
s/PERATINGTEMPERATUREª#ª#
s/PERATINGHUMIDITYNONCONDENSING
s3TORAGETEMPERATUREª#ª#
s$EGREEOFPROTECTION88$
The preset temperature values (expressed in °C) are the following:
funct. winter funct. summer
T1 5.0 /&&
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.

English
- 37 -
Mithos Programmable Thermostat User Manual

5

10

2

1

3

4

6

9

11

12

13

8

7
■Control elements
 " +EY: manual operation
  +EY: increases the selected field
or displays the daily maximum
temperature
  +EY: decreases the selected field
or displays the daily minimum
temperature
4) " +EY: confirms the set data
  +EY: activation and deactivation of the programmable thermostat
6) " +EY: selects temperature4
7) " +EY: selects temperature 4
  +EY: selects temperature 4
9) " +EY allows to set a timer or an activation delay
  +EY:programs setting or advanced programming
  +EY: clock setting
 +EY: winter operation (preset) or summer operation (the button is
reachable only with a point)
  +EY: deletes date and time but not the set programs (to do this see
"Restoring default parameters" page 56)
(the key is reachable only with a point).
#/.42/,%,%-%.43$)30,!9).$)#!4)/.3

English
- 38 -
Mithos Programmable Thermostat User Manual
■display indications
$AY Field
%XTERNALTEMPERATURE Field
%NVIRONMENTTEMPERATURE Field
3ETPROGRAM Field
-ANUALOPERATIONACTIVATION Field
4IMER Field
!IRCONDITIONINGACTIVATION Field
(EATINGACTIVATION Field
#LOCK Field
0HONEDIAL
Field
2ADIOFREQUENCYTRANSMISSION Field (not used)
5NITOFMEASUREMENT Field
/FF Field
  




 





English
- 39 -
Mithos Programmable Thermostat User Manual
INITIAL START-UP / RESET
s  Insert the battery and press the "R" key
using a point.
All the display segments will turn on and
the relay will be activated for 3 seconds;
after this, the clock fieldwill start at
12:00 and will flash until the clock is set.
Attention
IFTHECLOCKISNOTSET
THEPROGRAMMABLETHERMOSTAT
will not adjust; it will start doing
SOONLYONCETHECLOCKISSET
CLOCK SETTING
s Press the " " key; on field seconds
will run flashing, while field will
display digits for minutes and hours.
Press the ""key to reset seconds and
increase the minute field by 1 or "" to
reset the seconds field.
Press the ""key to confirm.
(In case the setting of the clock takes
place after a reset, the "seconds" field
is not adjustable. Therefore, the first
parameter to set will be the "minutes"
field).

English
- 40 -
Mithos Programmable Thermostat User Manual
At this point, the minutes digit will start flashing.
Use the ""and " " keys to increase or decrease the field and press " " to
confirm.
Repeat the procedure to set the hours.
Once the value for the hours is set, field will display a flashing value of the year,
field the value of the month and field the value of the day.
Press the ""and " " keys to modify the values and " " to confirm.
Once the day is set, press the ""key to exit the menu.
Upon exiting such procedure the clock indication will not flash any more; field  will
display the environment temperature again, while, if the external probe is connected,
field  will display the external temperature.

English
- 41 -
Mithos Programmable Thermostat User Manual
PROGRAMS SETTING
s Pressing the "PRG" key on field will
display the indication regarding Monday,
field  will display the selected program
flashing (in the example: P1), field will
display "Pro", field  will display the
graphic trend of the corresponding program
and will activate symbol  or 
depending on the set operation (summer or
winter).
If the selected program is correct, press the
"”key to continue to the next day.
s )FTHESELECTEDPROGRAMISNOTCORRECTFOR
that day, you can create another one using
the ""and " " keys which modify
value 0X contained in field ; as the
program changes, so does the content of
field regarding the selected program.
The default programs are listed at the end
of this manual.
Once the correct program is selected, press
the "”key to move on to the next day.
s 
If no program satisfies the user's needs,
choose any program and press the
"PRG"
key again; this will bring the segment of
the corresponding field
 to flash.

English
- 42 -
Mithos Programmable Thermostat User Manual
With the 4 , 4 and 4 keys, it is possible
to modify the temperature selected for
that hour and, at the same time, move on
to the next one. Using the
" " and
""
keys, it is possible to move from
one hour to the next without modifying
the set temperature.
Pressing the
" " key, it is possible to set
the activation delay for that specific hour.
Each pressure of the
" " key increases
the delay by 15 minutes.
Pressing the " " key confirms the
modified program and returns to the
situation with
0Xv flashing on field  .
Pressing the
" " key confirms the
program for that day and moves on to the
next until Sunday appears, after which
operation goes back to normal mode.

English
- 43 -
Mithos Programmable Thermostat User Manual
TEMPERATURES SETTING
s  In any of the operation modes, pressing
the
4 , 4 and 4 keys will bring field 
to display the writing corresponding to the
temperature that is being modified; on
field
 the value of the aforementioned
temperature will flash.
With the
" " and " " keys, it is
possible to modify the value and with
the
"” key it is possible to confirm the
change and return to normal operation.
The setting limits are reported in the
technical characteristics.

English
- 44 -
Mithos Programmable Thermostat User Manual
MANUAL OPERATION
s During automatic operation, when pressing the " " key, the system will act as a
normal thermostat with operating temperature Tm.
Field
 will show the current time.
Field
 will show the current date.
Field
 will display the writing "SEt" .
The symbol
 will appear.
Field
 will disappear. On field  the
set manual temperature value will flash.
With the
" " and " " keys, it is
possible to change the value from 2.0°C
to 35°C.
Pressing the
" " key or after 45 seconds
from the last operation, field
 will
display the value of the environment
temperature, while field
 will display
the external temperature value (if probe is
connected).
At any time, it is possible to verify the
set temperature pressing the
" " key
or the
" " key; pressing one of the 2
keys again will allow modification of the
temperature setting. To move from the
manual program to the automatic one,
simply press the
" " key again for at
least 3 seconds.

English
- 45 -
Mithos Programmable Thermostat User Manual
35--%27).4%2/0%2!4)/.
To move from winter to summer operation
(or vice versa), press the ""key with a
point .
On field  the writing "rISC" (or
"Cond") will flash and the symbol
" " (or " " ) will appear.
With the
" " and " " keys, it
is possible to select one of the two
operations.
The program will go to the desired
operation pressing the
" " key or after
45 seconds from the last operation.
The potential of the summer operation
is the same as the one of the winter
operation; therefore the setting of
all parameters can be carried out
following the procedures reported in this
instructions manual.

English
- 46 -
Mithos Programmable Thermostat User Manual
s To deactivate the programmable
thermostat press the
" " key.
The display will show the
" " symbol.
Once deactivated, during winter
operation the programmable thermostat
will activate the antifreeze function to
ensure that the temperature does not
decrease below a certain threshold.
Such temperature value is set in
advanced programming (see "Antifreeze
temperature" page 50)
During summer operation, instead, the
deactivated system condition completely
excludes the refrigeration command.
To go back to the operating mode prior to the deactivation, press the
" " key
again.
.OTE4HISCOMMANDHASAHIGHERPRIORITYTHANTHETELEPHONEACTIVATORCOMMAND
THEREFOREIFTHEDEVICEISDEACTIVATEDUSINGTHEKEYITWILLNOTBEPOSSIBLETO
activate/deactivate the instrument with the activator.
+%90!$/./&&#/--!.$
TIMING
The programmable thermostat allows to activate three different timed operation
modes, useful when you want to maintain a certain condition for some hours/days.
The three timed operations are:
-ANUALOPERATION
If in manual status you set a timing, such manual status will be maintained until
the end of the timing; operation will then switch to automatic. If, during the timing,
operation is switched to automatic or off, the timing ends.
!UTOMATICOPERATION
If in automatic status you set a timing, such automatic status will be maintained until

English
- 47 -
Mithos Programmable Thermostat User Manual
To activate timing it is necessary to press
the
h" key
The writing H will flash, indicating the
timing. With the
" " and " " keys it is
possible to choose a value between 0 and
99. Pressing the ""key will allow to
choose the measurement unit between hours
and days.
the end of the timing; operation will then switch to automatic. If, during the timing,
operation is switched to manual or off, the timing ends.
Timed deactivation
If in off status you set a timing, such off status will be maintained until the end of
the timing; operation will then switch to the one active before deactivation. If, during
timing, the system is activated, the timing ends.
In all cases, the timing condition is signalled by the symbol " ".
Setting a timing
Each change in measurement unit implies a
resetting of the set timing value.
Once the value has been set, press
" " to
confirm or wait 45 seconds.
.OTE)NCASETIMEISMODIlEDDURINGTIMINGITWILLNOTBEUPDATED
.OTE)NTHEHOURCOUNTTHEHOURINWHICHPROGRAMMINGISCARRIEDOUTIS
INCLUDED)NTHESAMEWAYIFTHEMEASUREMENTUNITISINDAYSTHECOUNT
ALSOINCLUDESTHECURRENTONE4IMINGINHOURSTERMINATEONTHEHOUR
THEONESINDAYSATMIDNIGHT

English
- 48 -
Mithos Programmable Thermostat User Manual
!$6!.#%$02/'2!--).'
s )NADVANCEDPROGRAMMINGITISPOSSIBLETOACCESSTHEFOLLOWINGOPERATION
parameters:
- regulation type
- parameters for regulation type
- antifreeze temperature
- temperature measurement unit
- external probe presence
- regulation probe selection
- keypad lock password
- system operation hours
- battery charge status
s &IELD will display the writing R%'
and on field  letter "O" (ON-OFF
programming) or "P" (proportional
programming) will flash.
s 4OENTERADVANCEDPROGRAMMINGPRESS
the "PRG" key for more than 3 seconds.
The parameter to be modified will flash;
using
" " and " " it is possible to
modify its value. Use
" " to confirm
the setting and move on to the next
parameter. Once the last parameter has
been confirmed, you will exit the menu
and the programmable thermostat will
restore operation with the previously set
operation.
2EGULATIONTYPE (only for winter operation)