SALUS THB23030/THB2430 Auto Balancing Actuator User Guide

: June 6, 2024
: SALUS

Table of Contents

Introduction
Product Compliance
Safety Information
Installation
Normal operation
Re-calibration
Documents / Resources
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)

SALUS THB23030/THB2430 Auto Balancing Actuator

Introduction

The THB23030/THB2430 is an actuator that can be used on Applications including: Underfloor Heating circuits. The THB23030/THB2430 has two temperature sensors that are connected between the Auto Balancing Actuator and the flow & return pipes or the inlet and outlet of the manifold. The Auto Balancing Actuator will measure the sensors temperature and adjust the actuator position to maintain a constant temperature differential between the emitter flow and return pipes (T).

Product Compliance

This product complies with the EN60730-1/EN60730-2-8; EN60335-1; 2014/30/EU;2014/35/EU; 2011/65/EU Directive.

Safety Information

Use in accordance with the regulations. Designed to be used exclusively indoor. Keep your device completely dry. Disconnect your device before cleaning it with a dry towel. This accessory must be fitted by a competent person, and installation must comply with the guidance, standards and regulations applicable to the city, country or state where the product is installed. Failure to comply with the relevant standards could lead to prosecution.

Installation

Attach the Auto Balancing Actuator to underfloor heating manifold thermostatic valves, on the return bar. When installing the THB23030/THB2430 ensure it is fully tightened onto the manifold. Actuator is in fully open position, out of the box, for easy installation.
Attach the two pipe temperature sensors, one on the flow pipe and the other to the return pipe.
Ensure the actuator temperature pipe sensors are placed facing forward to the flow and return pipes 10 cm down from the manifold.
Connect the actuator power cable to the control wiring center or the thermostat. Please note, the THB23030 require 230V connection, and THB2430 require 24V power supply
Fully open the flowmeters or shut-off valves on the supply manifold bar.

| Now actuator is ready for the calibration procedure. The actuator requires first to be calibrated to the manifold valve to ensure optimum performance before use, this may take up to 15 minutes.
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5. Power on the Auto Balancing Actuator, if connected to a thermostat set the demand temperature to maximum. The LED will flash at 0.25 Hz for two minutes, what mean the supercap is charging. After that actuator will open and close the valve to find correct motor pin position. 6. Next, the actuator will slowly open the valve at 2 minute intervals until heated water is detected in the flow pipe, this is the calibrated valve open point (VOP).
| Note: It is important that the flow manifold water temperature is not falling during this period, so ensure the flow temperature is at maximum / higher temperature during the calibration period (>35°C).
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7. Next, the actuator will slowly open the valve at 2 minute intervals until heated water is detected in the flow pipe, this is the calibrated valve open point (VOP). Once the VOP has been found the actuator will restrict the water flow to this minimum point when the ΔT is needed to rise and open beyond this point when the ΔT is needed to fall keeping the UFH circuit in balance.

Normal operation

Once calibrated the Auto Balancing Actuator when powered on will flash the LED for two minutes before fully opening the valve.

The ABA will then begin to modulate the flow by slightly opening / closing the valve once every two minutes to keep the ΔT between the flow and return at 7°C, however if the flow temperature is below 30°C then the ΔT will be lower (4°C ΔT) as the floor will be unable to achieve a higher value at low flow temperatures.

Re-calibration

Before starting the re-calibration procedure, disconnect the actuator from the power source. To re-calibrate, apply power to the actuator and wait at least 20 seconds then switch off the actuator within 1 minute of the power on. Wait until the LED goes out. The actuator will now perform the calibration at the next power on.

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