Condair DL
Hybrid humidifier for air handling units with nozzle spray and ceramic evaporation stage.
The Condair DL is a hybrid humidifier that humidifies the air in air handling units with atomising nozzles and a ceramic evaporation stage. This Modbus RTU template reads status, errors, capacity, pressures and water values, and lets you change the setpoint, capacity limit and remote enable from ModbusCloud.
- Protocol
- Modbus RTU
- Connection
- RS485, 19200 baud
- Registers
- 41, read and write
- Brand
- Condair
- Key readings
- Actual humidity or demand · Humidification capacity · Device status · Error code · Inlet and nozzle pressure · Water conductivity · Operating hours
- Available commands
- Humidity setpoint · Capacity limitation · Demand signal · Remote enable · Remote flushing
- Compatible models
- DL · DL II
- Last updated
Registers (41)
41 read, 8 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| Actual Humidity Or Demand | % | Read | |||
| Actual Humidification Capacity | Read | ||||
| Max Humidification Capacity | Read | ||||
| Device Status | Read | ||||
| Maintenance And Error Status | Read | ||||
| Error Or Warning Code | Read | ||||
| Safety Loop | Read | ||||
| PS4 Inlet Pressure | Read | ||||
| PS5 Nozzle Pressure | Read | ||||
| Water Temperature | Read | ||||
| Water Conductivity | µS/cm | Read | |||
| Pump Current | A | Read | |||
| Ag-Ion Current | mA | Read | |||
| Target Ag-Ion Current | mA | Read | |||
| Remaining Ag-Ion Capacity | Read | ||||
| Operating Hours | h | Read | |||
| Next Maintenance | h | Read | |||
| DL Type | Read | ||||
| Y1 Inlet Valve | Read | ||||
| Y2 Reserve | Read | ||||
| Y3 Valve Air Cleaning | Read | ||||
| Y4 Valve External Pipe Flush | Read | ||||
| Y5 Spray Valve | Read | ||||
| Y6 Spray Valve | Read | ||||
| Y7 Spray Valve | Read | ||||
| Y8 Spray Valve | Read | ||||
| Y9 Spray Valve | Read | ||||
| Y10 Drain Valve | Read | ||||
| Y11 Auxiliary Outlet Valve | Read | ||||
| Frequency Converter Enable | Read | ||||
| Frequency Converter Status | Read | ||||
| Fan | Read | ||||
| Disinfection Pump | Read | ||||
| Setpoint | % | Read and write | |||
| P-Band | % | Read and write | |||
| I-Time | min | Read and write | |||
| Capacity Limitation | % | Read and write | |||
| Actual Humidity Or Demand Via Modbus | % | Read and write | |||
| Remote Enable | Read and write | ||||
| Remote Flushing | Read and write | ||||
| Remote Ceramic Wash Over | Read and write |
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Use cases
- Show actual humidity, humidification capacity and device status of every humidifier in one dashboard.
- Send an email when the error code is not 0 or the maintenance status shows that service is due.
- Track nozzle pressure and water conductivity over months to spot clogged nozzles or bad water treatment early.
- Raise the capacity limitation or the humidity setpoint remotely when the building use changes.
- Plan maintenance from the hours until the next service and the remaining silver ion capacity.
Installation
Connect Data+, Data- and GND of the controller to the RS485 port of the ModbusCloud Gateway, with termination at both ends of the bus.
On the controller, open Menu, password 8808, Network, Modbus Settings, choose Modbus/RTU and check address, baud rate and parity.
In ModbusCloud, add a Modbus device with address 10, 19200 baud, 8 data bits, even parity and 1 stop bit, and import this template.
Check that device status and actual humidity show plausible values.
To control the humidifier via Modbus, set Source and Remote Enable to Modbus in the control settings.
Things to watch for
The humidifier does not answer. What should I check?
Check that Modbus Protocol is set to Modbus/RTU (the controller restarts after changing it), that address, baud rate and parity match ModbusCloud, and that Data+ and Data- are not swapped. Settings only take effect after a restart.
Why are the float values like pressure or capacity nonsense?
The 32-bit values follow the Register Sequence setting. The template expects MSR first, the factory setting. If someone set LSR first, set it back or change the word order of these registers.
The humidifier stops with warning W35 after writing a demand signal.
When the demand or humidity signal comes via Modbus, it must be written again within the signal timeout (default 300 s). Make sure your automation rewrites it well within that time, or use the setpoint with the built-in humidity control instead.
Writing Remote Enable has no effect. Why?
Remote Enable only works when the control settings have Remote Enable set to Modbus and the controller runs software 1.4.0 or higher. Without that, the register is ignored.
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