HRO20
Specification & Installation Instructions
5
Step Display
Description
Values
16
Minimum voltage of AO4 output:
Display shows
“min vdc analog ao4 output”
and the value of the
minimum voltage of the signal “
0.0
” for 0 to 10 Vdc or “
2.0
” for 2 to 10
Vdc. Humidify symbol is also displayed.
Please select the desired value of the minimum voltage of AO4 output.
Range: 0.0 or 2.0 Volt
Default value: 0.0 Volt
17
Set AI1 input signal:
Display shows
“select AI1 input signal”
.
Select which signal you want for AI1 input.
You can choose:
•
OFF
(input not used),
•
EHS.0
(external humidity sensor 0-10 Vdc),
•
EHS.2
(external humidity sensor 2-10 Vdc),
•
SPS
(external set point from Neptronic humidifier),
•
HIL.0
(high limit 0-10 Vdc),
•
HIL.2
(high limit 2-10 Vdc).
If you have selected OFF or SPS, go directly to step #20.
Note: If SPS is selected, the dehumidify set point will be disabled.
Default value: OFF
18
%RH
External humidity sensor offset calibration:
(If ‘’
EHS.0
’’, ‘’
EHS.2
’’, ‘’
HIL.0
’’ or ‘’
HIL.2
’’ has been selected at step #17)
Display shows
“extern humidty sensor offset”
and relative humidity
percentage read by external humidity sensor. Humidify symbol is also
displayed.
If the sensor is not connected or short circuited, the display shows
“
Eror
”
.
You can adjust the calibration of the sensor by comparison with a known
humidistat. For example if humidistat has been installed in an area where
humidity is slightly different than the room typical humidity.
Range: 10 to 90%RH
(max. offset ± 5%)
Increment: 0.1%RH
0.0%RH = no humidity sensor
19
%RH
Adjust high limit set point:
(If ‘’
HIL.0
’’ or ‘’
HIL.2
’’ has been selected at step #17)
Display shows
“adjust setpnt high limit”
and the high limit set point.
Select the desired high limit humidity set point; this one should be within
the high limit range.
Set point range: 10 to 90%RH
Increment: 1%RH
Default value: 80%RH
20
Set AI2 input signal:
Display shows
“select AI2 input signal”
.
Select which signal you want for AI2 input.
You can choose:
•
OFF
(input not used),
•
Wts
(Window Temperature Sensor 10K
Ω
),
•
OtS
(Outside Temperature Sensor 10K
Ω
).
If you have selected OFF, go directly to step #1.
Default value: OFF
21
C
External temperature sensor calibration:
(If ‘’
WtS
’’ or ‘’
EtS
’’ has been selected at step #20)
Display shows
“extern temper sensor offset”
and the temperature read
by the external temperature sensor (if connected on the selected input).
If the sensor is not connected or short circuited, the display shows
“
Eror
”
.
You can adjust the calibration of the external sensor by comparison with a
known thermometer.
Range: -30 to 90ºC [-22 to 194ºF]
(max. offset ± 5ºC)
Increment: 0.1ºC [0.2ºF]
22
Window temperature sensor compensation factor:
(If ‘’
WtS
’’ has been selected at step #20)
Display shows
“window temper sensor compens”
and the value of the
compensation factor.
You can adjust the compensation factor to avoid condensation on the
window.
The lower the compensation factor, the lower the maximum humidity set
point can be.
Range : 25 to 90
Increment: 5
Default value: 80
