Product Overview

© Danfoss | DCS | 2019.04
Danfoss
80G8232.01
°C
S3
S4
S4 min
T
S3
T
S4
R
p0
T
S2
EEV
Danfoss
80G365.10
“Warm brine / water
“Cooled” brine / water
Electric expansion valve
Time
Plate heat
exchanger
Data sheet | Superheat controller type EKE 1A, EKE 1B, EKE 1C
DKRCC.PD.RS0.A4.02 | 54
19.5 Min. S4 / leaving media This feature is also known as freeze protection. Minimum S4 limit will make sure that the temperature
of leaving media out of the evaporator is kept on or above of min S4 limit. An undershoot below the
Min S4 is possible, so a frost protection is still needed to secure that the compressor is stopped before
the braze plate heater is destroyed by ice.
When min S4 is active the capacity on heat exchanger is reduced by having a lower ow in
expansion valve. When min. S4 is active the superheat is higher and superheat will rst be back on
superheat reference when S4 is well above S4 min set point.
EKE 1A 1B 1C
Applicable
-
Parameter Function Description
N126 Min. S4 mode
Minimum S4 (media outlet) protection function. If S4 get below
setpoint the valve will close to reduce capacity
0= O , 1 = On: Function is active
N127 Min. S4 setpoint Minimum S4 (media outlet) protection setpoint 5 °C, default