- ENGLISH -
THW02B0000SE 027077 070616
1
BATTERY POWERED WEEKLY DIGITAL PROGRAMMABLE THERMO-HYGROSTAT
GENERALITIES
This device is a battery powered weekly digital programmable thermo-
hygrostat for the control of room temperature and relative humidity on
three levels: Comfort, Economy or Off / Antifreeze. The device can be
used in heating and cooling plants.
The programmable thermo-hygrostat has a large backlit LCD display
for all functional indications, the program schedule set, the room
temperature reading, the relative humidity reading, or, as desired, the
actual time.
Allows to set up to 7 different programs, one for each day of the
week, with a minimum intervention time of 1/2 hour over 24 hours.
In addition, the device offers the possibility of setting the Antifreeze
temperature value, dew point control and sensor Offset value
adjustment.
DESCRIPTION OF CONTROLS
Fig. 1
F
G
H
I
B
A
C
D
E
LEGEND
A
Button with double function:
-
In normal operation: activates the function 24 hours Manual /
Permanent Manual / Automatic.
-
In schedule programming: sets the regulation temperature into
Economy mode.
B
Button with double function:
-
In normal operation: turns on and off the programmable thermo-
hygrostat.
-
In schedule programming: sets the regulation temperature into
Off / Antifreeze mode.
C
Button with triple function:
-
In normal operation: displays current time or temperature.
-
In schedule programming: sets the regulation temperature into
Comfort mode.
-
In ‘Set-Point temperatures settings’, shows either the Comfort or
the Economy temperature
D
Changes the setpoint temperature and the configuration
parameters (increasing the value).
E
Changes the setpoint temperature and the configuration
parameters (decreasing the value).
F
Gives access to the user parameters list.
G
Button with double function:
- In normal operation updates the values sampled by the
thermostat.
- In ‘User parameters settings’, enables the selected parameter
modification and confirms the modified value.
H
Screw hole for fixing the programmable thermo-hygrostat body to
the wall mount plate
I
Battery compartment
DISPLAY SYMBOLS
In the following is explained the meaning of some symbols which may
appear on the display:
Battery status indication.
Flashing:
Batteries discharged; replace batteries.
Temperature regulation in Comfort mode.
Temperature regulation in Economy mode.
Temperature regulation in Off / Antifreeze mode.
Chronostat off: antifreeze function active, the display shows
‘OFF’.
Heating mode enabled.
Cooling mode enabled.
Activation in de-humidificationor humidification.
24h
Temperature regulation in Comfort mode for 24 hours.
24h
Permanent temperature regulation in Comfort mode.
P
Fixed
: shows access to the user parameters
Flashing
: meansthat the selecteduserparameter can be modified
Flashing:
Cleaning program active (the remaining time is shown on the
display).
Flashing:
Vacation program active (the remaining time is shown on the
display).
Fixed:
Indicates that the telephone interface is active.
Flashing:
Indicates that the remote command received by the
telephone interface has been overridden by another local
request through the chronostat buttons.
Fixed:
The temperature shown on the display is the one measured by
the internal sensor, yet the temperature regulation takes place
according to the remote sensor.
Flashing:
Both temperature shown and room temperature regulation refer
to the internal sensor.
Fixed:
The temperature shown on the display is the one measured by the
remote sensor, yet the temperature regulation takes place according
to the internal sensor.
Flashing:
Both temperature shown and room temperature regulation refer to
the remote sensor.
STARTING UP
When starting up for the first time:
- Insert the batteriesobserving the polarity markings shown in the battery
compartment (see ‘INSERTION / BATTERIES REPLACEMENT’).
- Set the time and day of the current week.
- Set the operating mode of the thermostat (user parameter ‘
C-H
’):
Heating (factory set) or Cooling.
Setting the current time and day
To set the clock of the programmable thermo-hygrostat carry out the
following steps:
1.
Open the flap of the battery compartment.
2.
Keep the ‘
OK
’ button pressed for at least 2 seconds; the hour digits
will start flashing.
3.
Set the hour using buttons ‘ ’ and ‘ ’.
4.
Confirm by pressing ‘
OK
’; the minute digits will start flashing.
5.
Set the minutes using buttons ‘ ’ and ‘ ’.
6.
Confirm with ‘
OK
’; the display shows the word ’dAY’ and the
square symbol corresponding to the current day flashes.
7.
Set the current day of the week using buttons ‘ ’ and ‘ ’
(the current day is highlighted by a box surrounding the number
corresponding to the day of the week, 1 Monday .. 7 Sunday )
8.
Confirm by pressing ‘
OK
’; the output of the time and day setting is
automatic.
Time/Temperature/Humidity Display
By repeatedly pressing the ‘
‘ the display can alternately show the
actual time, the room temperature (in °C) read by the internal sensor,
distinguished by the ‘ ‘ icon, the room temperature (in °C) read by
the remote probe (if connected) distinguished by the ‘
‘ icon and the
room humidity (in %RH) read by the internal sensor, distinguished by
the ‘ ‘ icon. The temperature and humidity readings are displayed
corrected by the Offset value set.
Note:
If the ‘
rEG
’ parameter is set at ‘
In
‘, but an error is detected on the
internal sensor, the display will show ‘
SEnS E xx
’. In this situation
the adjustment will be automatically interrupted and both relays will
be placed in the Normally Open position.
If the ‘
rEG
’ parameter has been set at ‘
Out
‘ but the remote
probe has not been connected or is damaged, the display will show
the respective wording ‘
SEnS OPEN
‘ or ‘
SEnS SHrt
‘ with the
‘
‘ icon on.
ATTENTION: In order to optimise battery duration, the
programmable thermo-hygrostat performs sensor readings
and error controls every 3 minutes or when ‘Ok’ is pressed and
consequently, decides on activation or deactivation of the relay.
Any error message must disappear within 3 minutes or on
pressing the ‘Ok’ key. If the message does not disappear then
problems have been detected on the sensors.
Comfort and Economy temperatures/humidity adjustment
During normal operation, the display shows the room temperature
and humidity reading and the icon relative to the current setting mode
‘ ‘ or ‘ ‘.
The programmable thermo-hygrostat reads the room temperature
from the internal or external sensor (depending on the setting made in
the ‘
rEG
’ parameter), while the humidity is only read on the internal
sensor.
The flashing ‘
‘ icon indicates that the adjustment (temperature or
humidity) takes place on an internal sensor, while the flashing ‘
‘
icon indicates that the adjustment (temperature only) takes place on
the remote probe.
Activation of the relay that controls the room humidity management
system is indicated on the display by switch-on of the ‘ ‘ icon.
The activation of the relay that controls the room heating/cooling
management system is indicated on the display by the switch-on of
the ‘ ’ icon for heating and the ‘ ’ icon for cooling.
Proceed as follows to adjust:
- Display the actual time.
- Press the ‘ ’ or ‘ ’ key once: the display shows the comfort
temperature set (distinguished by ‘ ‘ icon) and the ‘
SET °C
’ icon
(indicating that the setpoint temperature is being displayed).
- Press the ‘ ’ and ‘ ’ keys to modify the setpoint temperature
displayed.
- Press the ‘
‘ key, the display shows the economy temperature
set (distinguished by the ‘ ‘ icon and the ‘
SET °C
’ icon (indicating
that the setpoint temperature is being displayed).
- Press the ‘ ’ and ‘ ’ keys to modify the setpoint temperature
displayed.
- Press the ‘
‘ key, the display shows the comfort humidity set
(distinguished by the ‘ ‘ icon) and the ‘
SET %RH
’ icon (indicating
that the setpoint humidity is being displayed).
- Press the ‘ ’ and ‘ ’ keys to modify the setpoint humidity
displayed.
- Press the ‘
‘ key, the display shows the economy humidity set
(distinguished by the ‘ ‘ icon) and the ‘SET %RH’ icon (indicating
that the setpoint humidity is being displayed).
- Press the ‘ ’ and ‘ ’ keys to modify the setpoint humidity
displayed.
- Press the ‘ ‘ key or after a few seconds of inactivity, the display
goes back to showing the room temperature, memorising the values
set.
Note: Normally, in order to have night -time adjustment, the
economy temperature/humidity must have a value lower than
the comfort value.
The programmable thermo-hygrostat will adjust the room temperature
in comfort or economy mode in agreement with the hourly program set
(see ‘ USER PARAMETER SETTING ‘ paragraph).
Dew point control
The dew point (managed in the user parameter ‘
C-dP
’), represents
the temperature below which condensate forms on the surfaces and
depends on the temperature and humidity present in the room.
ATTENTION
- The dew point control is only active if the ‘ C-dp ’ (Dew Point
control) parameter has been activated.
- The dew point control is only managed in cooling and/or
dehumidification mode.
- If the conditions listed above are true, on the basis of the dew
point, the cooler and dehumidifier command will have priority
with respect to normal adjustment (i.e. with dew point control
disabled).
The table blow (table 1) shows the dew point value (expressed in °C),
depending on the room temperature and relative humidity, expressed
as ‘
%RH
’.
Via Prosdocimo, 30 I-36061 BASSANO DEL GRAPPA (VI)
Tel.: +39.0424.567842 - Fax.: +39.0424.567849
http://www.seitron.it - e-mail: [email protected]
T.HYGROS
Cod. THW02B
