Technical information Room controller Nea www.rehau.com.au Validity from July 2015 Technical omissions excepted. Construction Automotive Industry
INDEX 1..... Information and safety guidelines.................................................... 4 This technical information of the Room Controller Nea is valid from July 2015. Our current technical documentation can be found and downloaded at www.rehau.com.au This documentation is copyright-protected. Any rights derived from the copyright, in particular those related to translations, reproductions, extractions of illustrations, radio broadcasts, photo-mechanics or similar reproductions and storage on data processing equipment shall be reserved even from partial exploitation thereof. 2..... Room Controller Nea........................................................... 5 2.1.... System Components Nea.......................................................... 5 2.2.... Description of the components....................................................... 6 2.2.1... Room Controller Nea............................................................ 6 2.2.2... Remote Sensor Nea............................................................. 6 2.2.3... Wiring centre Nea.............................................................. 7 2.2.4... Actuator.................................................................. 7 2.2.5... Transformer 50 VA............................................................. 7 2.3.... Notes on planning............................................................. 8 2.4.... Installation and startup procedure...................................................... 9 2.5.... Recommended wiring diagram for NEA system controlling actuators and 2 pumps.............................. 10 All dimensions and weights are reference values. Errors and omissions excepted. 2 3
1 Information and safety guidelines 2 Room controller Nea Notes to this technical information Validity This technical information is valid for and New Zealand. Navigation At the start of this technical information you can find a detailed index with hierarchical headings and page numbers. Images and logos Safety guidelines Legal guidelines Intended use The REHAU Room Controller Nea is only permitted to be planned, installed and operated as described in this technical information. All other use is not compliant and is therefore impermissible. Always observe the applicable national and international laying instructions, installation regulations, accident prevention regulations and safety regulations as well as the guidelines of this technical information. Areas of application not included in this technical information (specific applications) require consultation with our Application Department. Contact them at your REHAU sales office. 2.1 System Components Nea --Room Controller Nea HT, Nea HCT --Remote Sensor Nea --Wiring Centre Nea H --Actuator --Transformer 50 VA System structure 1 Important information that should be taken into consideration Figure 2-1 Room Controller Nea 2 Online information Your advantages Actuality of the technical information Please check periodically for updated versions of the technical information about our products. This ensures correct product application as well as your safety. The issue date of each copy of the Technical Information booklet is printed at the bottom left corner of the cover page. The latest version of the Technical Information document can be found at your REHAU sales office, authorized wholesalers as well as online at: www.rehau.com.au or http://www.rehau.com.au/downloads/ 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. --Attractive design --Backlit LCD Display --Easy to operate --Easy installation --High comfort --Available as 24 V system 5 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 3 4 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. The Room Controller Nea and the thermal control elements are connected to the Wiring Centre Nea but they can also be used without the wiring centre. The Room Controller Nea enables a safe and clear identification of the system in the heating circuit distribution cabinet. The Wiring Centre can be connected to a maximum of 6 room controllers and 12 actuators. Field of application The components of the system Nea are provided for controlling the room temperature from heating panels systems in closed buildings. 4 5
2.2 Description of the components 2.2.2 Remote Sensor Nea 2.2.3 Wiring Centre Nea 2.2.4 Actuator 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. --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 Function overview Room Controller Nea Nea HT Heating Temperature drop through integrated time switch program Notification of the current temperature Notification of the current time and current weekday Setting of 3 daily time programs Party and holiday mode Integrated frost and valve protection function Connectible sensor Tab. 2-1 Function overview Technical data Room Controller Nea Nea HCT 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 A Protection class Class III Max. number of actuators 5 thermal REHAU actuators Protection IP 30 Frost protection mode 5 C Front dimensions 88 x 88 mm Rear dimensions 75 x 75 mm Depth 26 mm Storage temperature 20 +60 C Operating temperature 0 +50 C Field of application In closed areas 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 sensor and 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 in heating mode. In these cases, the Room Controller Nea HCT works as a thermostat, regulating the temperature to match the selected setting. Due to the ground temperature sensor, the temperatures of the ground and the room can be controlled independently of each other. When the minimal heating of the ground temperature is desired - for example in the bathroom - the ground heat output will be adjusted so that the desired ground temperature will be achieved without affecting the current room temperature. It is possible to control and regulate the ground temperature without changing the dominant room temperature. An installed remote sensor can also be used, instead of the built-in controller sensor, to adjust the temperature controls. Technical data Remote Controller Nea Sensor type NTC 10K (10 kohm, 1 % with 25 C) Cable length 4 m Protection IP 67 Tab. 2-3 Technical data Figure 2-4 Performance Wiring Centre NEA 24V Type Operating mode Integrated safety 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 7021 Color casing cover Light Grey similar RAL 7035 2.2.4 TRANSFORMER 50 VA The Transformer 50 VA is used for the power supply of the 24 V Wiring Centre Nea. Input Rated AC input voltage Rated AC input frequency 230-240V AC 50 Hz Output Nominal output voltage 24V AC Maximum load current 2.5A Maximum output power 48.0W Housing Dimensions 110 (L) X 83 (W) X 65 (H) mm Input Cord 2 X 0.75 mm 2 18AWG LD flat double insulated 800mm flex with 2-pin AS/NZS3112:2000 mains plug Output Cord 2 conductor figure-8 18AWG X 1800 mm Output Termination Strip length 50mm, tinned length 5 mm n Compliance Electrical safety EMC Certificate number N16680 ACA supplier code N692 Tab. 2-2 Technical data Figure 2-5 Transformer 6 7
2.3 Notes on planning Depending on the controller type and the desired function, connection cables are required with the following minimum number of wires: Heating HT Without external timing 3 With external timing 4 Please note: When connecting the Room Controller Nea, the PE wire (yellowgreen) should not be used. The PE conductor is provided exclusively for the purpose 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 4-wire cable 5-wire cable 24 V 1) up to 40 m cable length: at least 1 mm² up 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 be easily 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. Position To ensure trouble-free operation and efficient control, the Room Controller Nea must be installed in a draft-free area at a height of 130 cm from the ground. 130cm --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 notice that the cable outlet is provided on the wall 19 mm above the control center. 2.4 Installation and startup procedure The electrical installation must be in accordance with the applicable national regulations. These instructions require an expert with an officially recognized degree or certification in any of the following professions: Electrician. According to international regularions as much as comparable occupations within your specific national legislation. The controller must be disconnected from the power supply before removing the cover. Turn off the power to the entire room temperature control system for the assembly. Indications for the assembly of the Room Controller Nea and of the Wiring Centre Nea can be found in the products supplied manuals. Function test After completing the installation work, the function of the components and the correct 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 be verified 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. 8 9
2.5 Recommended wiring diagram for NEA system controlling actuators and 2 pumps REHAU Sales Offices REHAU wants to be close to their customers. For quick, satisfactory attention on-site, regional REHAU sales offices are available. On hand are competent staff members to provide expert advice and to process all inquiries and problems. In efficient logistics centers and large bearings, the standard REHAU products are kept ready for you. We support you with advice and assistance as you prepare for, and develop major projects. We are ready to help you through difficult construction projects until success is realized. Take advantage of the REHAU Tours service that delivers the products on time to your house or construction site, or the REHAU distribution centers, that keep the distance, time and disposition costs low. www.rehau.com.au Contact information for individual unit sales offices: - PERTH 46 Tacoma Circuit, 6155 CANNING VALE WA work: 1300 768 033 BRISBANE Level 5 / Seabank Building, 12-14 Marine Parade 4215 SOUTHPORT QLD work: 1300 768 033 ADELAIDE 464 Pulteney Street, 5000 ADELAIDE SA work: 1300 768 03 Perth Sales Office Brisbane Adelaide Sydney Melbourne Auckland MELBOURNE: 9-11 Endeavour Way, 3195 BRAESIDE VIC work: 1300 768 033 NEW ZEALAND 60b Cryers Road, East Tamaki 1701 Auckland New Zealand work: +64 9 272 2264 fax: +64 9 272 2265 sales.auckland@rehau.com 10 11
Shenyang Xi an Chengdu Qingdao Taipei Pune Bangalore Effektive Vernetzung REHAU AG + Co 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. REHAU Branches in Asia/ Regional Office for Asia/ SINGAPORE 1 King George s Avenue, REHAU Building, Singapore 208557 Tel: +65 6392-6006 Fax: +65 6392-6116 AUSTRALIA National Customer Centre Tel: 1300 768 033 Adelaide Tel: +61 8 8100-3500 Brisbane Tel: +61 7 5527-1833 Melbourne Tel: +61 3 9586-3100 Perth Tel: +61 8 9456-0700 Sydney Tel: +61 2 8741-4500 GREATER CHINA Beijing Tel: +86 10 6428-2956 Chengdu Tel: +86 28 8628-3218 Guangzhou Tel: +86 20 8776-0343 / 3646 Hong Kong Tel: +852 2898-7080 Qingdao Tel: +86 532 8667-8190 Shenyang Tel: +86 24 2287-5807 Taicang Tel: +86 512 5337-2815 Taipei Tel: +886 2 8780-3899 Xi an Tel: +86 29 6859-7000 INDIA Bangalore Tel: +91 80 2222-0014 ~ 0015 Mumbai Tel: +91 22 6148-5858 New Delhi Tel: +91 11 4504-4700 ~ 4705 Pune Tel: +91 21 3530-4801 INDONESIA Jakarta Tel: +62 21 5275-177 JAPAN Tokyo Tel: +81 3 5796-2102 KOREA Seoul Tel: +82 2 5011-656 NEW ZEALAND Auckland Tel: +64 9 2722-264 THAILAND Bangkok Tel: +66 2 7443-155 VIETNAM Ho Chi Minh City Tel: +84 8 3823-3030 www.rehau.com REHAU ANZ GT 0077.10.14 EN