MTN6830 Series Room Control Accessories - Temperature Sensors and Interfaces

The MTN6830 series provides specialized sensors and interfaces for room climate control, extending the capabilities of MTN room controllers with additional measurement points and control options.

Product Overview:

The MTN683090 provides accurate temperature measurement for locations where the main room controller cannot be optimally placed.

Sensor Specifications:

Applications for Remote Sensing:

Installation Guidelines:

• Mount at 1.5m height (seated head level)
• Avoid direct sunlight
• Avoid near heat sources (radiators, lamps)
• Avoid near air vents
• Allow air circulation around sensor

Enhanced Environmental Monitoring:

The MTN683901 adds humidity measurement for comprehensive climate control:

Humidity Sensor Specifications:

• Type: Capacitive polymer sensor
• Range: 0-95% relative humidity
• Accuracy: ±2% RH (10-90% RH)
• Response time: 30 seconds (63% of step)
• Long-term stability: <0.5% RH per year

Calculated Values:

• Dew point temperature
• Absolute humidity
• Enthalpy
• Comfort index (PMV/PPD)

Applications:

Museum and Gallery:

• Maintain 50±5% RH for artifact preservation
• Prevent condensation on cold surfaces
• Monitor seasonal changes

Swimming Pool Areas:

• Control ventilation based on humidity
• Prevent mold and corrosion
• Optimize energy recovery

Clean Rooms:

• Monitor critical humidity levels
• Alarm on deviation
• Data logging for compliance

Dedicated FCU Control:

The MTN684032 provides complete control of 2-pipe or 4-pipe fan coil units:

Output Configuration:

• Fan: 3-speed (high/medium/low) or 0-10V continuous
• Valve: 2-point or PWM heating
• Valve: 2-point or PWM cooling (4-pipe)
• Auxiliary: Electric heater stage

Control Modes:

Energy Optimization:

• Fan speed follows valve opening (not independent)
• Minimum run time prevents short cycling
• Setback temperature when unoccupied
• Window contact disables conditioning

Variable Air Volume Control:

The MTN684064 manages air flow in VAV boxes for zoned HVAC systems:

Measurement:

• Differential pressure: 0-500 Pa
• Air flow calculation: Based on K-factor
• Temperature: Supply and room air
• Damper position: 0-100% feedback

Control Functions:

• Constant volume: Maintain set flow rate
• Constant temperature: Maintain set room temp
• Dual maximum: Limit both flow and temp
• Night purge: Free cooling with outside air

Pressure Independence: The MTN684064 maintains set flow regardless of duct pressure variations:

• Measures actual flow via pressure drop
• Adjusts damper to compensate
• Stable room conditions despite system changes

Flexible Integration:

The MTN689701 bridges non-KNX devices with KNX systems:

Input Configuration:

• 4* analog inputs: 0-10V, 4-20mA, NTC, dry contact
• 2* digital inputs: Potential-free contacts
• Resolution: 10-bit (1024 steps)
• Update rate: 100ms

Output Configuration:

• 2* analog outputs: 0-10V, max 10mA
• 2* relay outputs: 10A/250V AC
• PWM output: For LED dimming or valve control

Application Examples:

Example 1: Third-Party Sensor Integration

Non-KNX sensor (0-10V) ──► MTN689701 ──► KNX bus
CO2 sensor, air quality monitor, or
Custom sensor becomes KNX-compatible

Example 2: Legacy Equipment Control

KNX command ──► MTN689701 ──► 0-10V output ──► Old actuator
New KNX system controls existing equipment
without replacement

Example 3: Complex Logic

Multiple inputs ──► MTN689701 logic ──► KNX telegram
AND, OR, threshold, timer functions
without separate logic module