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www.rehau.com.auValidity from July 2015Technical omissions excepted.

Technical informaTionroom conTroller nea

32

This technical information of the Room Controller Neais valid from July 2015.

Our current technical documentation can be found anddownloaded at www.rehau.com.au

This documentation is copyright-protected. Any rightsderived from the copyright, in particular those related totranslations, reproductions, extractions of illustrations,radio broadcasts, photo-mechanics or similar reproduc-tions and storage on data processing equipment shall bereserved even from partial exploitation thereof.

All dimensions and weights are reference values. Errorsand omissions excepted.

inDeX

1 � � � � � Information and safety guidelines � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4

2 � � � � � Room Controller Nea � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 52.1 . . . . System Components Nea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.2 . . . . Description of the components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.2.1 . . . Room Controller Nea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.2.2 . . . Remote Sensor Nea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.2.3 . . . Wiring centre Nea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.2.4 . . . Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.2.5 . . . Transformer 50 VA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.3 . . . . Notes on planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82.4 . . . . Installation and startup procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92.5 . . . . Recommended wiring diagram for NEA system controlling actuators and 2 pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

54

Notes to this technical information

ValidityThis technical information is valid for Australia and New Zealand.

NavigationAt the start of this technical information you can find a detailed index withhierarchical headings and page numbers.

Images and logos

Safety guidelines

Legal guidelines

Important information that should be taken into consideration

Online information

Your advantages

Actuality of the technical informationPlease check periodically for updated versions of the technical informationabout our products. This ensures correct product application as well as yoursafety.The issue date of each copy of the Technical Information booklet is printed atthe bottom left corner of the cover page.The latest version of the Technical Information document can be found at yourREHAU sales office, authorized wholesalers as well as online at:www.rehau.com.au or http://www.rehau.com.au/downloads/

Safety guidelines and operating instructions - Before beginning an installation read carefully through the safety guidelines

and operating instructions for your own safety and the safety of others. - Save the operating instructions and keep them at your disposal. - If you do not understand any of the installation instructions or safety

guidelines, contact your REHAU sales office. - Ignoring these or any other safety guidelines may cause damage to property

or endanger lives.

Intended useThe REHAU Room Controller Nea is only permitted to be planned, installed andoperated as described in this technical information. All other use is not com-pliant and is therefore impermissible.

Always observe the applicable national and international laying instructions,installation regulations, accident prevention regulations and safety regulationsas well as the guidelines of this technical information.Areas of application not included in this technical information (specificapplications) require consultation with our Application Department. Contactthem at your REHAU sales office.

Personal requirements - The installation of our systems should be executed only by authorized and

trained people. - The work of the electrical installations and the pipe segments should be executed only by trained and authorized people.

General precautions - Keep your work station clean and free from obstructing objects. - Ensure good ventilation of the work station. - Keep children and animals as well as unauthorized people from tools and

assembly areas. This applies in particular to renovations underway in inhabited areas. - Use only included components with the REHAU control system. The use of

components alien to the system can cause accidents or other hazardous conditions.

1 informaTion anD safeTy guiDelines 2 room conTroller nea

Figure 2-1 Room Controller Nea

- Attractive design - Backlit LCD Display - Easy to operate - Easy installation - High comfort - Available as 24 V system

2�1 System Components Nea

- Room Controller Nea HT, Nea HCT - Remote Sensor Nea - Wiring Centre Nea H - Actuator - Transformer 50 VA

System structure

Figure 2-2 Adjustment system structure Nea 24 V 1)

1 Room Controller Nea 4 Remote Sensor Nea 2 Wiring Centre Nea 5 Transformer 3 Actuator

The Room Controller Nea and the thermal control elements are connectedto the Wiring Centre Nea but they can also be used without the wiring centre. The Room Controller Nea enables a safe and clear identification ofthe system in the heating circuit distribution cabinet.The Wiring Centre can be connected to a maximum of 6 room controllersand 12 actuators.

Field of applicationThe components of the system Nea are provided for controlling the roomtemperature from heating panels systems in closed buildings.

1

2

3

45

76

2�2 Description of the components

2�2�1 Room Controller Nea

- Flat housing mountable on a flush mounted box or directly on the wall. - White backlit display. - With a visible status indicator in clear symbols. - Operations are performed through 3 buttons. - Set point adjustment in 0.5 degree steps. - Adjustment range 6-37 degree, adjustable lowering. - Max. 5 actuators connectible. - Choose different modes: Automatic, Normal, Reduced and optional Off. - Key block possible.

Function overview Room Controller Nea

Nea HT Nea HCTHeatingTemperature drop through integratedtime switch programNotification of the current temperatureNotification of the current time andcurrent weekdaySetting of 3 daily time programsParty and holiday modeIntegrated frost and valve protectionfunctionConnectible sensor –

Tab. 2-1 Function overview

Technical data Room Controller Nea

Nea 24 V

Color Front casing: Traffic White (RAL 9016) Back casing: Anthracite Grey (RAL 7016)

Operating voltage 24 V AC -10 % / +20 %Switching current 1 A (Ohmic load)Safety T 1 AProtection class Class IIIMax. number ofactuators

5 thermal REHAU actuators

Protection IP 30Frost protectionmode

5 °C

Front dimensions 88 x 88 mm

Rear dimensions 75 x 75 mmDepth 26 mmStoragetemperature

–20 … +60 °C

Operatingtemperature

0 … +50 °C

Field of application In closed areas

Tab. 2-2 Technical data

2�2�2 Remote Sensor Nea

Figure 2-3 Remote Sensor Nea

A Remote Sensor is optionally connected to the Remote Controller Nea HCT,which is suitable in special applications like as ground temperature sensorand for the measurement of the room temperature.

When used as a ground temperature sensor, it can:

-comply with the minimum or the maximum value of ground temperature inheating mode.

In these cases, the Room Controller Nea HCT works as a thermostat,regulating the temperature to match the selected setting. Due to the groundtemperature sensor, the temperatures of the ground and the room can becontrolled independently of each other. When the minimal heating of theground temperature is desired - for example in the bathroom - the groundheat output will be adjusted so that the desired ground temperature will beachieved without affecting the current room temperature.

It is possible to control and regulate the ground temperature without changingthe dominant room temperature.

An installed remote sensor can also be used, instead of the built-in controllersensor, to adjust the temperature controls.

Technical data Remote Controller Nea

Sensor type NTC 10K (10 kOhm, 1 % with 25 °C)Cable length 4 mProtection IP 67

Tab. 2-3 Technical data

2�2�3 Wiring Centre Nea

Figure 2-4 Wiring Centre NEA 24V

Performance

Type Operating mode Integratedsafety

Wiring Centre Nea H 24 V Heating T 2 A

Table 2-4 Performance

- For the connection of maximum 6 room controllers and 12 thermal actuators in 24 V AC - Screwless connection through clamps and plug-in connections

for rail or wall installation in the power distribution cabinet - Wiring Centre with integrated pump control - Automatic temperature drop, available for 2 heating programs on external

digital timers - Integrated strain relief - Visible ordered connections

The Wiring Centre Nea 24 V have to be used with the Transformer 50 VA.

Color lower housing and top section Black Grey similar RAL 7021Color casing cover Light Grey similar RAL 7035

2�2�4 Actuator

- Thermal actuator, closed currentless - Clear status display - Light installation - Overhead installation possible - “First-Open-Function” for the operation of the heating surface in the

construction phase (before the installation of the regulator) - Adjustments for different valves and distribution products - Safety degree IP 54 - 24 V or 230 V model deliverable

2�2�4 TRANSFORMER 50 VA

The Transformer 50 VA is used for the power supply of the 24 V Wiring Centre Nea.

InputRated AC input voltage 230 - 240V ACRated AC input frequency 50 Hz

OutputNominal output voltage 24V ACMaximum load current 2.5AMaximum output power 48.0W

Housing Dimensions110 (L) X 83 (W) X 65 (H) mm

Input Cord2 X 0.75 mm2 18AWG LD flat double insulated 800mm flex with 2-pin AS/NZS3112:2000 mains plug

Output Cord2 conductor figure-8 18AWG X 1800 mm

Output TerminationStrip length 50mm, tinned length 5 mm Australian ComplianceElectrical safety Certificate number N16680EMC ACA supplier code N692

Figure 2-5 Transformer

98

2�3 Notes on planning

Depending on the controller type and the desired function, connection cablesare required with the following minimum number of wires:

HeatingHT

Without external timing 3With external timing 4

Please note: When connecting the Room Controller Nea, the PE wire (yellow-green) should not be used. The PE conductor is provided exclusively for thepurpose of protecting the line.

For the connection of the Room Controller Nea HT, a 4-wire cable is generally recommended (one wire for the external timing control is provided).

Recommended conductors

Nea HCT

24 V1)

4-wire cable 5-wire cableup to 40 m cable length: at least 1 mm²up to 70 m cable length: at least 1.5 mm²

1) It is recommended to use rigid pipes also for the 24-V-System, since these can beeasily inserted into the plug without wire end terminals.

- The controller should be installed in the most commercially available recessed conduit boxes (DIN 49073) or directly on the wall. - The power supply to the Wiring Centre should be attached to a fuse. - When installing the Controller in the bathroom (see DIN VDE 100 part 701)

the 24-V-System should be preferably used.

PositionTo ensure trouble-free operation and efficient control, the Room Controller Neamust be installed in a draft-free area at a height of 130 cm from the ground.

- Don’t install the controller: - behind curtains - in places exposed to direct sunlight - in areas with high humidity - near a heat source - in drafty areas - Don’t place the controller on an exterior wall. - For the connection cable of the remote sensor, a suitable conduit must be

provided. The sensing element must be placed so that a good heat transfer is achieved in the measured component.

When installing the controller without a flush-mounting box you must noticethat the cable outlet is provided on the wall 19 mm above the control center.

For your benefit symbol To ensure trouble free operation and efficient control. the room thermostat Neais best positioned behind a door and at 130cm from the floor. (Pic) Do not position the thermostat: 1. Near any heat source (pics)2. Behind curtains(pic)3. Direct Sunlight(pic)4. In a bathroom or area of high humidity(pic) Info symbol· Not to be positioned on exterior wall· Do not install the remote sensor (if applicable) in an empty tube· Only the temperature at the position of remote sensor (if applicable) is measured

130cm

130cm

2�4 Installation and startup procedure

The electrical installation must be in accordance with the applicable nationalregulations. These instructions require an expert with an officially recognizeddegree or certification in any of the following professions:

Electrician.

According to international regularions as much as comparable occupationswithin your specific national legislation.

The controller must be disconnected from the power supply before removingthe cover.

Turn off the power to the entire room temperature control system for theassembly.

Indications for the assembly of the Room Controller Nea and of the Wiring Centre Nea can be found in the products supplied manuals.

Function testAfter completing the installation work, the function of the components and thecorrect assignment of the controller to the valve actuators should be checked.

1. Switch on main fuse.2. Adjust the controller on the highest setpoint.

After 4-5 minutes the valve actuators should be completely open. This can beverified by the outgoing steam at the top of the actuator button.

3. Leave the controller for at least 15 minutes at the highest setpoint to ensure the release of the First-Open function of the actuators.4. Repeat the same procedure on the other room controllers.5. Adjust all the controllers on the smallest setpoint.6. After about 5 minutes, check if the actuators have been closed. Here, also check the correct assembly of the valve actuators and the correct adjustment to the distribution control valves (see Figure 2-5). The circular button on the top of the actuator must be moved out about 0.5 mm.

Figure 2-5 Valve adjustment

7. Adjust the controller to the desired setpoints and operating modes.

1110

REHAU wants to be close to their customers. For quick,satisfactory attention on-site, regional REHAU salesoffices are available. On hand are competent staffmembers to provide expert advice and to process allinquiries and problems.

In efficient logistics centers and large bearings, thestandard REHAU products are kept ready for you. Wesupport you with advice and assistance as you preparefor, and develop major projects. We are ready to helpyou through difficult construction projects until successis realized. Take advantage of the REHAU Tours servicethat delivers the products on time to your house orconstruction site, or the REHAU distribution centers, thatkeep the distance, time and disposition costs low.

www�rehau�com�au

Contact information for individual unit sales offices:

- PERTH REHAU Pty Ltd 46 Tacoma Circuit, 6155 CANNING VALE WA Australia Contact Details: work: 1300 768 033 fax: 1300 760 665

BRISBANE REHAU Pty Ltd Level 5 / Seabank Building, 12-14 Marine Parade 4215 SOUTHPORT QLD Australia Contact Details: work: 1300 768 033 fax: 1300 760 665

ADELAIDE REHAU Pty Ltd 464 Pulteney Street, 5000 ADELAIDE SA Australia Contact Details: work: 1300 768 03 fax: 1300 760 665

MELBOURNE: REHAU Pty Ltd 9-11 Endeavour Way, 3195 BRAESIDE VIC Australia Contact Details: work: 1300 768 033 fax: 1300 760 665

NEW ZEALAND 60b Cryers Road, East Tamaki 1701 Auckland New Zealand Contact Details: work: +64 9 272 2264 fax: +64 9 272 2265 sales.auckland@rehau.com

rehau sales offices

AucklandSydney

Brisbane

Melbourne

AdelaidePerth

Sales Office

AucklandSydney

Brisbane

Melbourne

AdelaidePerth

Sales Office

2�5 Recommended wiring diagram for NEA system controlling actuators and 2 pumps

www.rehau.com © REHAU ANZ GT 0077.10.14 EN

Our verbal and written advice relating to technical applications is based on experience and is to the best of our knowledge correct but is given without obligation.The use of REHAU products in conditions that are beyond our control or for applications other than those specified releases us from any obligation in regard to claims made in respect of the products.We recommend that the suitability of any REHAU product for the intended application should be checked. Utilization and processing of our products are beyond our control and are therefore exclusively your responsibility. In the event that a liability is nevertheless considered, any compensation will be limited to the value of the goods supplied by us and used by you.Our warranty assumes consistent quality of our products in accordance with our specification and in accordance with our general conditions of sale.This document is protected by copyright. All rights based on this are reserved. No part of this publication may be translated, reproduced or transmitted in any form or by any similar means, electronic or mechanical, photocopying, recording or otherwise, or stored in a data retrieval system.

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