STEP 20 – Minimum Voltage of AO3 Output
Do not change setting for Aprilaire Model 801 Modulating
Steam Humidifier.
Display shows min vdc analog ao3 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.
Select the desired value of the minimum voltage of AO3
output.
If you have selected dehumidify only at STEP 6, go directly
to STEP 17.
VALUES
Range: 0.0 or 2.0 Volt
Default setting: 0.0 Volt
STEP 21 – Minimum Voltage of AO4 Output
Do not change setting for Aprilaire Model 801 Modulating
Steam Humidifier.
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.
Select the desired value of the minimum voltage of AO4
output.
VALUES
Range: 0.0 or 2.0 Volt
Default setting: 0.0 Volt
STEP 22 – Set AI1 (Duct Sensor) Input Signal
Display shows select AI1 input signal. Use when
installing the duct humidity sensor.
If duct sensor is not installed select the default setting, OFF.
To configure the duct sensor as the primary control sensor
(installed in the return duct) select EHS.0.
If you have selected OFF, go directly to STEP 20.
VALUES
Default setting: OFF
STEP 23 – 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 duct humidity sensor.
Humidify symbol is also displayed.
If the sensor is not connected or short circuited, the display
shows Error.
You can adjust the calibration of the sensor by comparison
with a known humidistat.
VALUES
Range: 10 to 90%RH
(max. offset ± 5%)
Increment: 0.1%RH
0.0%RH = no humidity
sensor
STEP 16 – Dehumidity Derivative Time
Display shows DEHUMI DERIVAT TIME and its value.
Display shows if Auto or dEHu are selected at STEP 6 “Adjust
Control Mode.”
Dehumidify symbol is displayed.
Set the derivative time for the dehumidify ramp. Many
control applications can run with just P and I control. The
derivative control adds a factor to time scale in order to brake
or dampen the control effort.
VALUES
Derivative Time range:
0.0 to 300.0 seconds
Increment: 0.5 seconds
Default setting:
0 seconds
STEP 17 – Humidity Dehumidity Locked Time
Display shows HUMIDTY DEHUMI LOCKED TIME and its value.
Display shows if Auto is selected at STEP 6 “Adjust Control
Mode.”
Represents a delay before switching from one mode to
the other. For example, if set to 2 minutes and the system
is currently humidifying, the system will only switch to
dehumidification if the demand for dehumidification is active
for 2 consecutive minutes.
VALUES
Locked Time range:
0 to 120 minutes
Increment: 1 minute
Default setting:
0 minutes
STEP 18 – Minimum Voltage of Humidify Modulating Output
Do not change setting for Aprilaire Model 801 Modulating
Steam Humidifier.
Display shows min vdc analog ao1 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.
If you have selected humidify only at STEP 6, go directly
to STEP 15.
VALUES
Range: 0.0 or 2.0 Volt
Default setting: 0.0 Volt
STEP 19 – Minimum Voltage of Dehumidify Modulating Output
Do not change setting for Aprilaire Model 801 Modulating
Steam Humidifier.
Display shows min vdc analog ao2 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. Dehumidify symbol is also
displayed.
Select the desired value of the minimum voltage of AO2
output.
VALUES
Range: 0.0 or 2.0 Volt
Default setting: 0.0 Volt
English 1716 English
