Nortec RH2+ Manual de usuario descargar pdf (Pagina 30)

27 | Start Up

Nortec Digital Controls

Nortec provides optional On/Off and Modulating digital controls. Figure 26 show the function

and meaning of the Digital Control’s display and buttons. All controls are available either wall

mounted or with a remote sensor for duct mounting.

Figure 26: Modulating and On/Off Digital Control Operation

Modulating Control

The modulating controls use a PI control algorithm to transmit a 0-10V control signal to the

humidifier. Adjust the setpoint to the desired setting by using the up/down arrow buttons on

the controller.

On/Off Control

The On/Off controls use a PI control algorithm to open and close a relay that opens and closes

the humidifier’s On/Off loop. Adjust the setpoint to the desired setting by using the up/down

arrow buttons on the controller.

Output signal is shown on

modulating controller

proportional to the demand.

State of On/Off humidistat

Setpoint (RH%)

Humidity (RH %)

Indicates the

humidistat is on.

A half moon

indicates it is off.

Snowflake indicates the

setpoint is being

overridden by outdoor

temperature.

Option button accesses

sensor calibration.

See troubleshooting

Increase / Decrease Setpoint

Power button turns

off the humidiistat if

pressed for 2 seconds

Note: It is possible to field calibrate Nortec digital controls if the displayed humidity is

found to be different than a known trusted source. See chapter on Troubleshooting.

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Nortec RH2+ Manual de usuario Pagina 30