Room Humidistat
Specification & Installation Instructions
HRO20/100921
1
Technical Data
HRO20
Outputs
Actual humidity (0-100%RH), 0-10 Vdc / 2-10 Vdc
Humidity set point (0-100%RH), 0-10 Vdc / 2-10 Vdc
Humidification proportional control signal, 0-10 Vdc / 2-10 Vdc
Dehumidification proportional control signal, 0-10 Vdc / 2-10 Vdc
Humidification dry contracts 24 Vac, 1 A max, 3 A in-rush
Dehumidification dry contracts 24 Vac, 1 A max, 3 A in-rush
Inputs
Window temperature sensor or outside temperature sensor (10 K
Ω
)
External set point from Neptronic humidifier,
external humidity sensor (0-10 Vdc / 2-10 Vdc) or high limit (0-10 Vdc / 2-10 Vdc)
1 alarm status digital input (24 Vac or dry contact)
Power supply
22 to 26 Vac 50/60 Hz or 28 to 32 Vdc
Power consumption
1 VA
Set point range
10 - 90%RH (in 1% increments)
Sensor precision
± 3% or better at 40%RH and 23ºC [73ºF]
Proportional band
2 % - 10 % for control signal
Electrical connection
0.8 mm
2
[18 AWG] minimum
Operating condition
0ºC to 40ºC [32ºF to 104ºF], 0-95%RH
Storage condition
-10ºC to 50ºC [14ºF to 122ºF], 0-95%RH
temperature compensation
reset feature
Automatic readjustment of set point from a window temperature sensor (SHW0-11)
or external temperature sensor (STC8-11)
Housing degree of protection
IP 30 (EN 60529)
Weight
130 g. [0.3 lb]
Interface
C
F
%RH
MO TU WE TH FR SA SU
AM PM
..
..
Symbols on display
Humidification ON
33,66,100% output
C
or
F
ºC: Celsius scale
ºF: Fahrenheit scale
Alarm status
Dehumidification ON
33,66,100% output
Menu set-up Lock
%RH
Percentage of
humidity
Programming mode
(Technician setting)
Dimensions
Dimension
Imperial (in)
Metric (mm)
A
2.85 73
B
4.85 123
C
1.00 24
D
2.36 60
E
3.27 83
Features:
•
Attractive modern look with large LCD and backlight
•
Icons driven information and 1 line of text
•
External humidity sensor input
•
Humidification and dehumidification indicator
•
Multi level lockable access menu
•
Lockable Set point / Control mode
•
Window/outside temperature sensor input
•
Celsius or Fahrenheit scale selectable
HRO20
A
B
C
D
E
