TRV

TRV

Commercially available TRVs of possible interest

• Danfoss Living Connect
• ELV FS20/FHT
• ELV MAX!
• Eurotronic SPARmatic Premium
• Heat Genius
• HomeWizard
• Honeywell Evohome
• Honeywell Hometronic
• HeatSave
• iHome
• LightwaveRF Connect
• nCube
• Pegler Terrier i-temp
• RWE Smarthome
• Smartwares TRV
• Telefunken Joonior
• ThermaLogic
• TrickleStar

Anatomy

TRV Anatomy

2013/03/27 Stuart P said (with a small addition from Damon) "thought it would be well worth covering just exactly what a TRV actuator is, and its parts. I'm hoping to turn this into a graphical representation in the future. Consider it a brain dump, not all TRVs need all parts."

Valve Body Actuator

• Motor, Gear Train, actuator Pin

Motor Drive

• H Bridge Circuit
• Optical Rotational Sensor

User Interface

• Push buttons
• LCD Display
• Rotary knob
• LED Indicators

Power Supply

• 2xAA Batteries (typically)
• 5V USB (Optional)

Communication Interface

• RF
• Serial
• USB
• Ethernet
• Xbee
• ZWave
• Wired connections such as RS232/RS423/1-Wire (DHD)
• Others such as IR and ultrasound and PLT (eg X-10) (DHD)

Brains

• Microprocessor