Zehnder Rittling CALADAIR EDT2 Manual

Designer radiator Controlled indoor ventilation Radiant ceiling heating and cooling Clean air solutions
Installation, Service and User Manual
Zehnder
EDT2
always the best climate

Zehnder EDT2
2Z-CALADAIR-V1122-CSY-INM-EDT2
Safety and environmental guidelines
In accordance with the regulations in force, the installation of the equipment must only be carried out by technically
qualified personnel authorised for this type of appliance and work.
Do not use the appliance for any purpose other than that for which it is designed. This appliance can only be used in
combination with the CLD-283 electronic controller which is part of the EASY 5.0 system.
Before any intervention, make sure that the appliance connected to the Zehnder EDT2 Wall-Mounted Touchscreen User
Controller is de-energised and wait for the moving parts of the ventilation unit to come to a complete stop before
opening the doors, panels and access hatches.
The appliance can only be switched on and off via the proximity switch.
The safety and control equipment of the appliance connected to the Zehnder EDT2 Wall-Mounted Touchscreen User
Controller must not be removed, short-circuited or disabled.
All waste produced must be handled in accordance with the regulations in force.
We accept no liability for damage resulting from misuse of the equipment, unauthorised repair or modification or failure
to observe these instructions.
Reminder and definition of the pictograms used
Danger and warning :
- Operation or situation that may be hazardous
- Warning that there are instructions to be observed
Reading the documentation that accompanies the product is mandatory.

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3Z-CALADAIR-V1122-CSY-INM-EDT2
2. Receipt of the equipment
2.1. Checks upon receipt
Check the condition of the packaging and the equipment upon receipt. In the event of damage, immediately note down
precise and complete details on the carrier's delivery note.
2.2. Unpacking
When unpacking the equipment, check the following points:
■ Presence of total number of packages
■ Presence of the required accessories (support plate)
After unpacking the material, the waste must be disposed of in accordance with the standards in force. No packaging
should be released into the environment.
Supply voltage 24VAC / DC
Consumption 60mA
Protection class IP30
Ambient humidity 10…90% (without condensation)
Indoor temperature 0, 50°C (operation)
-20, 70°C (storage)
Connections Spring terminal strip (max. 1.5mm² – AWG 16)
Maximum distance between Zehnder EDT2
and CLD-283 controller 100 m max.
Display LCD with LED backlight
Dimensions (Width x Height x Depth) 95 x 95 x 23 / 26 mm (see diagram)
Weight (with packaging) 0.17kg
Installation Recessed or surface-mounted on the wall according to mounting plate
Material (housing and pedestal) Polycarbonate (PC)
Fire resistance (material) UL 94 V-0
Housing colour RAL 9003
1. Technical specifications
1.1. General
1.2. Dimensions
26
②
95
95
18

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2.3. Storage
The material should be stored in a sheltered, dry place as the packaging is not suitable for storage in bad weather.
2.4. Supply limit
The Zehnder EDT2 Wall-Mounted Touchscreen User Controller is delivered alone.
Depending on the type of support (wall, partition, breeze block, brick, etc.), it is necessary to provide suitable fixings
(dowels) and screws of the appropriate length and diameter (diameter < 4mm with recommended Phillips head).
3. Functions
The Zehnder EDT2 Wall-Mounted Touchscreen User Controller is a touch-sensitive room control. It provides the
interface between the machine and the end user (occupant) through the following features:
Settings
Temperature setpoint offset in the
range of -3°C to +3°C (in 0.5°C
increments)
Range changeable from the CLD-283 controller within a limit of -5°C to +5°C.
Activation of a 120-minute restart
Press and hold
Time can be changed from the CLD-283 controller up to 240 minutes (in
1-minute increments). When the restart is activated, it can be stopped at any
time by simply turning off the function manually. It must be reactivated when the
programmed time has elapsed.
Putting the display on standby Press and release
Information (display)
Current ventilation mode* Ventilation running in reduced mode
Ventilation running in normal mode
Current ventilation status* Fixed display (= no ventilation) / flashing display (= active ventilation)
Current operating mode* Operation on a timed schedule or external overruling activated
Current status of external
overruling
At least one external overruling activated (restart, external DI controls reduced /
normal operation, GTC HR796)
Current temperature setpoint Supply temperature setpoint if supply temperature is controlled
Return temperature setpoint if return temperature is controlled
Current measured temperature Supply temperature if supply temperature is controlled
Return temperature if return temperature is controlled
Presence of alarms
The presence of an alarm is indicated by a small flashing light bulb. AXXX is
displayed instead of the temperature when an alarm that causes the machine to
stop is active (XXX represents the ID number of the alarm - e.g. A168 for alarm
no. 168).
* This display does not exist when the Zehnder EDT2 is connected to the CLD-283-WEB-5.0 controller with Prog
version: 5.0-1-07, display from Prog version : 5.0-1-08.
AUTO

Zehnder EDT2
5Z-CALADAIR-V1122-CSY-INM-EDT2
4. Display zone
5. Compatibility
The Zehnder EDT2 Wall-Mounted Touchscreen User Controller is an optional remote room control for use with the EASY
5.0 system, It is for use with:
■ Zehnder Carma
■ Zehnder Neotime
■ Zehnder Silvertop
■ Zehnder Freetime
■ Zehnder Hexamotion
It is not compatible with the older 3.6 version (and earlier) controllers used in these units.
6. Installation
Step Description
1Check that the support (wall) is suitable to accommodate the Zehnder EDT2 Wall-Mounted Touchscreen User
Controller and the power / communication cable.
2
Position the support plate in the desired location
using a spirit level (or equivalent) and observing
the orientation (indication "UP" with arrow pointing upwards)
see accompanying image:
3Mark the position of the 4 drill holes for fixing the support plate to the wall, and the central hole for feeding the
power / communication cable.
4Drill the support (wall) taking into account the diameter of the screws and the diameter of the electric cable.
5Fix the support plate with the screws.
6Connect the wires to the back of the Zehnder EDT2 Wall-Mounted Touchscreen User Controller according to the
wiring diagram (see VII ELECTRICAL CONNECTION).
7Fit the Zehnder EDT2 Wall-Mounted Touchscreen User Controller onto the support plate.
8Connect the power supply and the communication bus to the ventilation unit.
9Activate the connection from the CDL-283 controller.
Information display
Settings
Ventilation is running in reduced mode
Ventilation is running in normal mode
Current measured or setpoint temperature (supply or return)
Or alarm number (example A168)
Setpoint offset downwards
Setpoint offset upwards
Switching between setpoint and measured temperature display
(supply or return temperature depending on the configuration of
the temperature control mode in the controller)
Press and release: display on standby / engaged
Press and hold: activation / deactivation of the restart
Temperature displayed = current measured temperature (supply or
return)
Temperature displayed = current setpoint temperature (supply or
return)
Alarm presence (flashing display)
Fixed display: fans are off
Flashing display: fans are on
Operation on a timed schedule or external overruling activated
Overruling active
(restart, external DI controls reduced / normal, GTC HR796*)
*see Modbus / BACnet exchange table in the EASY 5.0 control manual
Information display

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6Z-CALADAIR-V1122-CSY-INM-EDT2
7. Electrical connection
Only one Zehnder EDT2 Wall-Mounted Touchscreen User Controller can be connected to the CLD-283 controller.
It is important to keep the data transfer cable away from power cables and sources that produce regular power outages
(contactors, relays, frequency inverters, etc.) to avoid interference that could affect the quality of data transmission.
Zehnder EDT2 side:
■ Connect the data wires (twisted pair) to terminals (B) and (A), and the shielding to (N) of port P2 of the controller.
■ Connect the power leads to terminals (+24) and (N).
Ventilation unit side:
■ Connect the power leads to terminals (7) and (8) taking into account the polarity.
■ Connect the data wires (twisted pair) to terminals (B) and (A) of port P2 of the controller.
Ventilation unit
(electric board)
Central
internal
terminal strip
24VDC
7
(G0)
+24V N B A
8
(+C)
1G
-
+
2GD
P1 RxTx
P2 RxTx
TCP/1P
P/B
B 50
A 51
P
1
P
2
N 52
E 53
B 60
A 61
N 62
E 63
DI1a 71
DI2a 72
DI3a 73
DI4a 74
DI5a 75
DI6a 76
DI7a 77
DI8a 78
AO1a 91
AO2a 92 AO3a 93 AO4a 94 AO5a 95
ANGD 90
Ext.
Disp.
4+C
10 GDO
11 DO1b
12 DO2b 13 DO3b 14 DO4b 15 DO5b 16 DO6b
17 DO7b
30 AGND 33 AGND 40 AGND 43 AGND
31 AI1a
32 AI2a 34 AI3a 35 AI4a
41 UI1a
42 UI2a 44 UI3a 45 UI4a
3
CLD-283

Zehnder EDT2
7Z-CALADAIR-V1122-CSY-INM-EDT2
Select "Port 2" from the drop-down menu bar:
Access path to the function (Access level: user)
Step 1 →Step 2 →Step 3
From
screen
Area to
click
Symptom Possible cause Remedy
The screen does not light
up There is no power supply
Check the power supply to the ventilation unit (24VDC between
terminals (7) and (8) of the unit).
Check the wiring and connections of the power supply cables between
the ventilation unit and the Zehnder EDT2 Wall-Mounted Touchscreen
User Controller (24VDC between terminals (+24) and (N) of the
Zehnder EDT2).
The screen displays OFFL There is no communication
Check that communication is enabled in the CLD-283 controller.
Check the wiring and the connection of the communication between
the ventilation unit and the Zehnder EDT2 Wall-Mounted Touchscreen
User Controller ((A → A, B → B, N shielding).
8. Configuration of the CLD-283 controller
It is necessary to activate communication with the CLD-283 controller from here.
9. Diagnosis
Remote room control
Restart time (min)
Min. temperature offset (°C):
Max. temperature offset (°C):
120
-3
3
Settings
Restart time (min)
Min. temperature offset (°C):
Max. temperature offset (°C):
Settings:

Z-CALADAIR-V1122-CSY-INM-EDT2, en, Zehnder Caladair reserves the right to change its production without notice.
Zehnder Caladair International
61, Rue Saint-Véran
71000 Mâcon France
[e-mail]
www.caladair.com