Werbung
Verfügbare Sprachen
Verfügbare Sprachen
U 468 931 002 915-05
Installation and
Operating Instructions
Electronic
Clock Thermostat
easy 3p
Warning!
This unit must not be opened and installed
except by authorized persons and in compli-
ance with the circuit diagram provided inside
the cover. It is mandatory in all work on the
unit to observe the current safety regulations.
In order to classify for protection class II it is
necessary to take adequate installation mea-
sures.
This separately mounted unit is designed for
temperature control exclusively in dry and
closed rooms with standard environment. The
unit features radio-interference suppression
in compliance with VDE 0875 T. 14 and
EN 55014, respectively and works according
to operating principle 1 C (EN 60730).
1. Applications
The easy 3p electronic clock thermostat is designed for
room temperature control in conjunction with:
•
heating systems, e.g. hot-water heaters, convector hea-
ters or floor heating
•
electric convector heaters, ceiling and storage heating
•
night-storage heaters
•
circulation pumps
•
burners and boilers
•
heat pumps, etc.
•
Airconditioning applications (cooling only)
other temperature controllers can be controlled
via time switch output.
Features
•
very simple operation
•
comfort and setback temperature adjustable
•
3 operating modes for:
permanent comfort temperature (5...30 °C)
permanent setback temperature (5...30 °C)
clock mode (automatic)
•
Indicator lamps for:
heat demand
setback mode
•
time switch output (for temperature setback of other
temperature controllers)
•
available with daily or weekly timer
•
output signal PWM or ON/OFF regulation (adjustable via
jumper)
•
relay output, 1 x changeover contact
•
hinged cover
•
new design
2. Function description
The clock thermostat is designed to control the room tem-
perature.
In the automatic mode, a changeover is effected between
comfort and setback mode by the built in timer.
In setback mode the green indicator lamp lights up.
If room temperature drops below set value, heating will
start, the red indicator lamp will light up.
Indicator lamps
Red
indicates when controller demands heat,
Green indicates when setback mode is activated.
Red
flashing for failure.
Operating voltage to be switched OFF and ON again.
Temperature setback of other temperature
controllers
Temperature setback inputs of other temperature control-
lers can be connected to time switch output (terminal 28).
They are then controlled by the time switch.
The position of the mode selector switch (see 6.6) influen-
ces this output accordingly.
Controller heat demand at PWM
If room temperature drops below the set value, heating
mode will start. The controller output is in the form of pul-
ses of varying length (PWM). The length of the pulses
depends on the difference between set and actual room
temperature.
The sum of pulse and pause times can be selected with
J 4 (between 10 or 25 min.).
If there are large temperature differences, the controller
will switch ON or OFF permanent, e.g. when changing
over to temperature setback mode. Use PWM only at
current ≤10 A.
On
Off
Temperature
set temperature
10/25 min
Fig. 1: Characteristic of impulse pause ratio depending on temperature
Cycle time setting
For inert applications (e.g. burners) we recommend the
long cycle time.
For quick applications (e.g. electric direct heaters) we
recommend the short cycle time.
Plug-in jumper J4
Time
(right side of board)
Double-pole jumper
25 min
connection
(as-delivered condition)
Single-pole jumper
10 min
connection
Heat demand of the controller at ON/OFF regulation
When room temperature drops below set temperature the
output will be switched on, whereas it will be switched off,
when set value is exceeded.
ON
OFF
Hysteresis
set temperature
temperature
Fig. 2: ON/OFF regulation
Plug-in jumper J3
Regulation
(right side of board)
Double-pole jumper
ON/OFF
connection
Single-pole jumper
PWM
connection
(as delivered condition)
3. Installation
The controller should be arranged in a place within the
room which:
•
is easily accessible for operation
•
is free from curtains, cupboards, shelves, etc.
•
enables free air circulation
•
is free from direct sun radiation
•
is free from draughts (e.g. opening of windows and doors)
•
is not affected directly by the source of heat
•
is not located on an external wall
•
is located approx. 1,5 m above floor level
Mounting directly on conduit box or with adapter
frame ARA easy.
Electric connection
Warning! Disconnect electric circuit from supply
Proceed as follows:
•
pull off temperature setting knob
•
push retaining hook outwards using screwdriver
•
remove housing cover
•
make connection in compliance with wiring diagram (see
housing cover).
•
watch notes
4. Technical data
Temperature setting range:
comfort temperature
5...30°C
setback temperature
5...30°C
Regulation
proportional controller (due to
PWM quasi-continuous, see Fig. 1)
Cycle period
adjustable 10 or 25 min.
(sum of PWM ON and OFF times)
Proportional band
1.5 K
~0,5 K ≤10 A (see fig. 2)
Hysteresis at
~2,5 K at 16 A
ON/OFF regulation
adjustable via jumper
Output
relay, 1 volt-free*
changeover contact
10 mA...16 A cos ϕ = 1
Switching current
max. 4 A cos ϕ = 0,6
max. 10 electro-thermal actuators
Switching voltage
24...250 V AC
Time switch output
max. 20 temperature setback inputs,
230 V: max. 50 mA,
24 V: max. 150 mA
Mode selector switch
comfort / automatic / setback
Indicator lamp:
red
controller demands heat
green setback mode
Temperature sensor
internal
Range limitation
inside setting knob
Clock: accuracy
<10 min./year
switching time setting every 15 min. with daily timer
every hour with weekly timer
power reserve
approx. 100 h
Protection class of housing IP 30 / insulated
Degree of protection
II (see Warning)
Ambient temperature
–10...40°C, without condensation
Storage temperature
–25...65 °C
Dimensions
160 x 80 x 36 mm
Weight
approx. 220 g
* The volt-free contact of this mains-operated unit does not
ensure the requirement for the use of safety extra-low voltage
(SELV).
For units with 230 V supply voltage
Type
easy 3pt with daily timer
easy 3pw with weekly timer
Article-Nr.
easy 3pt
517 2703 51 100
easy 3pw
517 2704 51 100
Operating voltage
195...253 V AC 50/60 Hz
Power consumption
<1.5 W
For units with 24 V supply voltage
Type
easy 3pt/24 with daily timer
easy 3pw/24 with weekly timer
Article-No.
easy 3pt/24 517 2703 21 100
easy 3pw/24 517 2704 21 100
Operating voltage
20...30 V AC 50/60 Hz
Power consumption
< 1.5 W
For units with low voltage output
Type
easy 3pt with daily timer
easy 3pw with weekly timer
Article No.
easy 3pt
517 2713 51100
easy 3 pw
517 2714 51100
Operating voltage
195...253 V AC 50/60 Hz
Switching current
>1V/>1 mA...max 250 V/AC 10 A
Power consumption
<1.5 W
5. Wiring diagram
Symbol explanation
U
Heating
P
Cooling
TA
Temperature set-back for other controllers
Note
For heating applications
•
connect n/c actuators to terminal 2.
•
connect n/o actuators to terminal 3.
For cooling applications
•
connect n/c actuators to terminal 3
•
connect n/o actuators to terminal 2
•
To use the red lamp U as indicator for "Ccooling
ON", connect n/o actuators to terminal 2
6. Operation
Temperature setting
Comfort temperature (daytime temperature)
1
is set by means of externally visible setting knob (1)
Setback temperature (night temperature)
2
is set by means of adjustment knob (2) beneath
cover.
Time setting
by putting one finger on dial (3) and turning in any
3
direction, you can set the time.
Arrow (4) points to the selected time.
4
Switching time setting
Bring movable tappets (5) into required position
5
using a pointed object.
Outer ring = comfort temperature
Inner ring =
setback temperature
6
Mode selector switch (6) – internally
É Comfort temperature, permanent
2
Automatic mode, time-controlled changeover
between comfort and setback temperature
Ñ
Setback temperature, permanent
6
3
4
5
21
2
1
Werbung
