ELEKTRA ETN4-1999 User manual

© 2012 OJ Electronics A/S
1
Contents
MCS4-10 / MSD4-1999 / MSA4-10
67153 01/12 (MBC)
ETN4-1999
English
MANUAL
Introduction ................................................................................ 1
Thermostat operation .............................................................. 1
Temperature setting .................................................................. 1
Settings ...................................................................................... 1
Max. temperature .................................................................... 2
Min. temperature ..................................................................... 2
Max. limit temperature ............................................................. 2
Min. limit temperature .............................................................. 2
Frost protection ....................................................................... 2
Night setback / energy-saving function ................................... 2
Measured floor temperature .................................................... 2
Measured room temperature ................................................... 2
Application ............................................................................... 2
Scale ........................................................................................ 2
Temperature reading ................................................................ 2
Oset ....................................................................................... 2
Control method ........................................................................ 2
PWM cycle time ....................................................................... 2
Dierential temperature ........................................................... 2
Backlighting ............................................................................. 2
Relay function .......................................................................... 2
Program version ...................................................................... 3
Child lock .................................................................................. 3
Control signal ............................................................................. 3
Factory settings ......................................................................... 3
Error messages ......................................................................... 3
Introduction
ETN4-1999 is an all-in-one thermostat for DIN-rail mounting in an
approved cabinet. It covers the needs of a variety of applications
in which maximum comfort and minimum energy consumption are
required, e.g. electric floor heating, frost protection, cooling, etc.
The thermostat allows a required temperature to be set within the
range -19.5 to +70 °C. The large backlit display provides a clear
view of status, while the three navigation buttons allow easy menu
operation.
1 234567
8 9 10 11 12 13 14
All-in-one Thermostat
Centremost
button
Programming
ON/OFF
switch
Left-hand button
Lower tempera-
ture
Right-hand
button
Raise tempera-
ture
ETN4-1999 THERMOSTAT
Thermostat operation
The ON/OFF button is used to turn the thermostat o “0” or on “I”.
When the ON/OFF switch is in position “0”, the relay is deactivated.
All settings are saved.
The thermostat is easily operated using the navigation buttons.
Basic functions like temperature and thermostat settings are sim-
ple to perform. Whenever a button is pressed, the backlighting will
come on and stay lit for 30 seconds after a button is last pressed.
Temperature setting
The thermostat has a temperature setting range of -19.5 to +70 °C.
The menu allows limits to be defined for the range within tempera-
ture may be set (factory setting = 0-40 °C). The required temperature
is set using the left- or right-hand button. The temperature setting
flashes on the display. Five seconds after the setting has been made,
the required temperature will be shown on the display continuously.
Settings
To set parameter values, press and hold the centremost button for
three seconds. SCA  Hi  40 will appear on the display. Firstly,
SCA will be displayed for 1 second, followed by Hi, and finally 40.
The required value can now be set using the navigation buttons. To
access the next parameter, press the programming button again.
If no button is pressed for 30 seconds, the program returns to the
initial display.

2© 2012 OJ Electronics A/S
ETN4-1999 English
Frost protection = 8 °C means temp. setting = 8 °C.
Night setback / energy-saving function
The number of degrees the temperature setting is to be reduced.
The night setback setting must be preceded by a minus sign (-). Is
controlled via an external signal (fig. 3 in instructions).
Example: The setpoint is 25 °C.
Energy-saving function = -5 °C means temp. setting = 20 °C.
Energy-saving function = +3 °C means temp. setting = 28 °C.
Measured floor temperature
Displays actual floor temperature (if a floor sensor is fitted).
Measured room temperature
Displays actual room temperature.
Application
Sets thermostat function. Select the required control type. Four
alternatives exist:
Floor (F): The thermostat controls floor temperature
alone.
A floor sensor must be fitted.
Room (A): The thermostat controls room temperature
alone.
Room/limit (AF): The thermostat controls room temperature
while respecting min. and max. limits for floor
temperature. A floor sensor must be fitted.
Regulator (C): The thermostat functions as a simple regulator
and no sensors are used. The setting is in per
cent.
Limit function (Li): Controls only on floor sensor temperature with
min. and max. limits. (Li Lo = -19,5/0 °C)

  



Scale
Choose between degrees Celsius and a numerical scale. If the
numerical scale is selected, temperature is set on a scale from
0.0 to 10.0 where 0.0 corresponds to min. temperature (SCA Lo)
and 10.0 corresponds to max. temperature (SCA  Hi).
Temperature reading
Defines which temperature is to be shown on the start display: the
setpoint (SP) or the actual, measured temperature.
Offset
If the actual temperature (measured using a thermometer) diers
from that displayed by the thermostat, the thermostat can be
adjusted to oset the dierence.
Control method
PWM or ON/OFF control can be selected. PWM is an advanced
control method which calculates the most eective and economi-
cal way to heat homes and other buildings. ON/OFF control is
traditional dierential control (e.g. 0.3 °C) for other tasks.
PWM cycle time
Allows cycle time to be set when using PWM control. At least 20
min is recommended.
Differential temperature
Allows temperature dierential to be set when using ON/OFF con-
trol. The higher the dierential temperature, the lower the number
of relay operations.
Relay function
When used for heating purposes, the relay should be in normally
open position (NO). If the thermostat is used for cooling purposes,
the relay should be turned to normally closed (NC).
Parameter Shown on display Factory settings
Max. temperature SCA  Hi  40 40 °C
(-19.5/+70 °C)
Min. temperature SCA  Lo  0 0 °C
(-19.5/+70 °C)
Max. limit temperature
FLOOR *1 Li  Hi  28 28 °C (-19.5/+70 °C + OFF)
Min. limit temperature
FLOOR *1 Li  Lo  15 15 °C
(-19.5/+70 °C + OFF)
Min. limit temperature
Limit function *2 Li  Lo  -19,5 -19,5 °C
(-19.5/0 °C + OFF)
Frost protection dEF  8.0 8 °C
(0/+10 °C)
Night setback nSb  -5.0 -5 °C
(-19.5/+30 °C)
Measured floor tem-
perature FLo  24.5 (example) *3
Measured room
temperature ro  21.5 (example) *3
Application APp  F (Floor sensor)
 A (Room sensor)
 AF (Room sensor with
floor temperature
limits)
 C : Regulator
F : Floor
Scale LCd  C C = Celsius
(nU = numerical)
Temperature reading in
start display dF  SP SP = Setpoint (tP = actual temp.)
Oset OFF  0 0
(+/- 10 °C)
Control method PWM  On On
(OFF)
PWM cycle time *4 cyc  20 20 minutes
(10-60 min)
Dierential tempera-
ture *5 dIF  0.3 0.3 °C
(0.3/10 °C)
Relay function rEL  no
no = normally open
(nc = normally
closed)
Software version SU  1.0
*1 : Only available if APp  AF is selected under Application.
*2 : Only available if APp  Li is selected under Application.
*3 : With no or disconnected sensor, - - is shown on the display
*4 : Only available if PWM is ON under Control Method.
*5 : Only available if PWM is OFF under Control Method.
If Regulator (C) is selected under Application, the floor and room sensors are discon-
nected and heating is controlled on a scale of 0-10, corresponding to 0-100% of full
power.
Max. temperature
The highest temperature to which the thermostat can be set.
Min. temperature
The lowest temperature to which the thermostat can be set.
Max. limit temperature
Allows the highest permissible floor temperature to be set for
wooden and other floor types when control type has been set to
room sensor with floor limit (AF).
Min. limit temperature - Floor
Allows the lowest permissible floor temperature to be set for tiled
and other floor types when control type has been set to room sen-
sor with floor limit (AF).
Min. limit temperature - Limit function
Allows the lowest permissible temperature to be set in Limit func-
tion.
Frost protection
The lowest temperature for frost protection when the function is
activated via an external signal (fig. 4 in instructions).
Example: The setpoint is 25 °C.

© 2012 OJ Electronics A/S 3
Software version
Displays thermostat software version.
Child lock
Allows thermostats in public and other places to be locked, thus
preventing unauthorised alteration of the settings. Press and hold
the left- and right-hand buttons simultaneously for 10 seconds. A
symbol indicates that the thermostat is locked.
The child lock can be released by pressing the left- and right-hand
buttons simultaneously for 10 seconds.
Factory settings
Allows factory settings to be restored. Your personal settings will
be deleted from the thermostat.
Press and hold the centremost button for 10 seconds. The display
is switched o and then on again. Application is shown on the
display (APp F) followed by the temperature setting.
Error messages
If a fault occurs, the master/thermostat will display one of the fol-
lowing error codes:
Error code Fault Remedy
E0 Internal fault. Thermostat defective. Replace thermostat.
E1 External room sensor defective or short-
circuited (terminals 10-11).
Replace sensor/sensor cable. To continue to operate the system without
sensor, set control type to Regulator under Application (APp C).
E2 External floor sensor defective or short-circuited
(terminals 8-9).
Replace sensor/sensor cable. To continue to operate the system without
sensor, set control type to Regulator under Application (APp C).
E5 Internal overheating. Thermostat shuts o heat-
ing.
Check installations. Check that heating cables are not overloaded or
that ambient temperature is excessive. When internal temperature drops,
the thermostat automatically reactivates.
ETN4-1999 English