Carel iJW handleiding
Handleiding
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ENG
iJW +0300103EN rel. 1.1 - 31.03.2025
Index
7.15.1 Humidity control without probe
If no humidity probe is available, humidity control can be performed in three levels, through evaporator fan duty cycles and
changing the control temperature diff erential. See “Humidity management with evaporator fan cycles”.
7.15.2 Humidity control with probe
Notice: the humidity probe is only available on models with an option that includes the 0-5 V analogue input, see “Intro-
duction”.
Par. Description Def Min Max UOM User User terminal
/FP Assign humidity probe (fi xed on S5) 0 0 5 - S NO
/cP Humidity probe calibration 0 -20 20 % rH S NO
To enable the input, set the value of /Fp to 5, while to disable it, set the value to 0.
The probe reading can be shown on the display by setting parameter /t1 or can be read under item SHu in the direct functions
menu. Furthermore, parameter /ta can be used to alternate the display of the temperature/humidity values.
7.15.3 Humidi cation output settings
To activate the humidifi er, a relay needs to be assigned to the “humidifi er” function.
Par. Description Def Min Max UOM User User terminal
DOu Assign humidifi cation digital output - see DOA ... 0 6 - S NO
rOu Humidifi cation digital output logic - see rOA 0 0 1 - S NO
7.15.4 Dehumidi cation output settings
To activate an external dehumidifi er, a relay needs to be assigned to the “external dehumidifi er” function, and in this case its logic
will be completely uncoupled from the compressor logic.
Par. Description Def Min Max UOM User User terminal
DOz Assign external dehumidifi er digital output - see DOA ... 0 6 - S NO
rOz External dehumidifi er digital output logic - see rOA 0 0 1 - S NO
As well as by an external dehumidifi er, dehumidifi cation can also be controlled through simultaneous action of the compressor
and a heater; in this case, a relay needs to be assigned to the “dehumidifi cation heater” function. To activate dehumidifi cation,
simultaneous cooling (compressor) and heating (heater resistance) are required. The eff ect of cooling is to lower the air relative
humidity, while the heater then off sets the excessive cooling, so as to maintain a virtually constant temperature during the pro-
cess. The dehumidifi cation heater is activated with a fi xed diff erential of 1°C below the temperature control set point, as shown
in the fi gure.
Par. Description Def Min Max UOM User User terminal
DOj Assign dehumidifi cation heater digital output - see DOA ... 0 6 - S NO
rOj Dehumidifi cation digital output logic - see rOA 0 0 1 - S NO
300100_163_R01
TMP
St
1 °C
OFF
ON
SHu
Sth
rrH
DEH
CMP
HTR
OFF
ON
Ref. Description
CMP Compressor
HTR Dehumidifi cation heater
DEH External dehumidifi er
TMP Temperature
SHu Humidity
St Temperature control set point
Sth Humidity control set point
rrH Dehumidification control differential
Fig. 7.af
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Productinformatie
| Merk | Carel |
| Model | iJW |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 14964 MB |
