Product Overview

© Danfoss | DCS | 2019.04
Data sheet | Superheat controller type EKE 1A, EKE 1B, EKE 1C
DKRCC.PD.RS0.A4.02 | 17
6.0 Installation
6.1 General installation
6.2 Sensor mounting
6.2.2 Pressure transmitter
mounting
This section describes a typical installation in brief, for detail please refer to the EKE Installation guide
Installation of the pressure transmitter is less critical. but mounting of pressure transmitter should be
closer to the temperature sensor right after the evaporator and with its head in “upright position”.
Note:
Always install compatible
electronic sensors and
expansion valve of suitable
capacity as close to the
evaporator as possible.
Under size or over sized valve
in the system may impact
the performance of the
system. Installation of sensors
away from evaporator may
impact precision and system
performance.
Evaporator
6.2.1 Temperature sensor
3
Danf
oss
84N365.11
Danfoss 60G496.11
OD
OD
OD
OD
1
/
2
-
5
/
8
in.
12 - 16 mm
3
/
4
-
7
/
8
in.
18 - 22 mm
1 - 1
3
/
8
in.
25 - 35 mm
1
3
/
8
in. and higher
35 mm and higher
Danfoss 84N366.12
21
conductive
paste
evaporator
outlet
Note:
• Mount sensor on a clean surface
without any paints.
• Remember to put on heat
conducting paste and insulate
the sensor.
• Sensor mounting max. 5 cm from
the outlet of the evaporator to
get the precise measurements.
• Physical temperature sensor
can’t be shared.
In EKE 1A and EKE 1B, it is allowed to share one ratiometric pressure transmitter between maximum
ve controllers.
If several evaporators are sharing the same suction line, the signal from the pressure transmitter
can be used by max of 5 controllers as shown below. In order to get a correct acquisition on all the
units all the three wires (GND, 5V and transmitter signal, output) must be routed to every unit.
In EKE 1C, a physical pressure transmitter is not allowed to share between multiple EKEs, however
the pressure signal values can be shared via CANbus
6.2.3 Sharing pressure
sensor
AKS
32R
EKE 1B
EKE 1B
EKE 1B
Danfoss 80G335.10
COM 5V+ DI2 DI1 COM AI4 AI3 AI2 DI3 COM
Com AI1/ DI3 Ai2 AI3 AI4 Com DI1 DI2 +5V Com COM
Supply
GND
Signal
Note:
In EKE 1C, physical pressure
can not be shared. Pressure
values can be shared via
CANBus only
Danfoss
84N403.10
Close to the
evaporator