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35-130
45-190
Installation Installation
User and User and
Service Manual Service Manual
W WA AT TE ER R P PR RO OD DU UC CT TS S
C CO OM MP PA AN NY Y
A A D DIIV VIIS SIIO ON N O OF F A A.. O O.. S SM MIIT TH H C CO OR RP PO OR RA AT TIIO ON N
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www.aosmithinternational.com your installer
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Instruction manual TWI 35-130 G/TWI 45-190 G 1
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2 Instruction manual TWI 35-130 G/TWI 45-190 G
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Carefully read this manual Warning Carefully read this manual before starting up the device. Not reading this manual and not following the instructions in this manual may lead to personal injuries and damage to the device. Copyright © 2007 A.O. Smith Water Products Company All rights reserved. Nothing from this edition may be copied, reproduced and/or made public by means of press, photocopying or in any other way without prior permission in writing from A.O. Smith Water Products Company. A.
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4 Instruction manual TWI 35-130 G/TWI 45-190 G
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Table of content 1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7 1.1 About the device - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7 1.2 What to do when you smell gas - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7 1.3 Regulations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -7 1.4 Target groups - - - - - - - -
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Table of content 11 Warranty (certifi cate)- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 51 11.1 Warranty general- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 51 11.2 Warranty tank- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 51 11.3 Conditions of installation and use - - - - - - - - - - - - - - - - - - - - - - - - - - - - 51 11.4 Exclusions- - - - - - - - - - - - - - - - - - - - - - -
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1 Introduction 1.1 About the device This manual describes the installation, service and use of the TWI-device. The TWI-device is a condensating boiler with a fan in the air supply. The TWI can be installed both as a closed and as an open device. The device typically has a concentric chimney connection. The device can also be connected as a parallel system. The possible device types are B23, C13, C33, C43, C53 and C63. The information in this manual is applicable to the TWI 35-130 and TWI 4
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1 Introduction Remark Supplements or later adjustments and/or additions to any regulations, requirements and guidelines are applicable at the moment of installing. 1.4 Target groups The three target groups for this manual are: • (end) users; • installation engineers; • service and maintenance engineers. Symbols indicate on every page for which target group the information is intended. See the table. Symbols per target group Symbol Target group (End) user Installation engineer Service an
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1.6 Notation system This manual makes use of the following notation system: Remark Attention: important notice. Caution Ignoring this text may result in damage of the device. Warning Ignoring this text may lead to serious damage of the device and to situations that are dangerous to people. 1.7 Overview of this The table provides an overview of the content of this document. document Content of this document Chapter Target groups Description 2. Operation of the device This chapter describe
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1 Introduction Chapter Target groups Description 11. Warranty (certifi cate) This chapter contains the terms of warranty. 12. Annexes This chapter contains the electrical circuit diagram. 10 Instruction manual TWI 35-130 G/TWI 45-190 G
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2 Operation of the device 2.1 Introduction This chapter will cover in the given order: • General operation of the device; • Heating cycle of the device; • Security of the device; • Safety of the installation. 2.2 General operation The fi gure shows a cross section of the device. of the device Cross section of the device Legends IMD-0527 1. Temperature sensor / ECO 2. Insulating layer 3. Air pressure switch 4. Burner 5. Venturi 6. Air supply pipe 7. Gas control 8. Co
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2 Operation of the device In this device the cold water is supplied through the cold water inlet (16) at the bottom of the tank. The tap water heated by the combustion chamber (15) and heat exchanger (13) leaves the tank at the hot water outlet (12). If the device is maximally fi lled with water, there is a constant water piping pressure. When tapping hot water from the device, cold water is immediately added again. The device has been provided with an e premix burner (4) with 1:1 gas/air rat
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2.4.2 Security of the water temperature The safety switch or ECO (Energy Cut-Off) switches off the device when the water temperature exceeds 95 ºC. As soon as the temperature has suffi ciently dropped, the ECO is reset automatically. Contact the installation engineer if the ECO repeatedly switches off the device. 2.4.3 Gas control The electronic control opens the gas control allowing supply of gas to the burner. The gas control has two valves as a safety device. Both valves shut off the ga
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2 Operation of the device 2.5 Safety of the installation Apart from the standard security of the device, the installation shall further be protected using an expansion vessel, an expansion valve, a pressure reducing valve, a non-return valve and a T&P valve. The use of an expansion vessel, expansion valve and/or pressure reducing valve is dependent on the type of installation: unvented or vented. 2.5.1 Unvented installation With an unvented installation an expansion valve and an expansion v
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3 Installation Warning The installation shall be carried out by an authorised installation engineer in accordance with the generally and locally applicable regulations of gas, water, electricity companies and the fi re brigade. The device shall only be installed in an area that amply meets the national and local ventilation regulations (1.3 “Regulations”). 3.1 Introduction This chapter describes the installation activities to be carried out before defi nitely starting up the device (7 “Sta
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3 Installation 3.3.1 Air humidity and ambient temperature The installation area should be frost-free or be protected against frost. The table gives the ambient conditions that shall be observed in order to be able to ensure the functioning of the applied electronics. Specifi cations for air humidity and ambient temperature Air humidity and ambient temperature Air humidity max. 93% RH at +25°C Ambient temperature Functional: 0 ≤ t ≤ 60°C 3.3.2 Maximum fl oor loading In view of the weight of the
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Remark When installing the device, make sure that the device cannot damage the immediate surroundings or lower fl oors in case of leakage of the tank and/or connections. If this is the case, install the device near a fl oor discharge or in a metal drip tray of the right size. A drip tray shall have a solid discharge and be at least 5 cm deep with a length and width of at least 5 cm larger that the diameter of the device. Working area IMD-0528 R0 Instruction manual TWI 35-130 G/TWI 45-190 G
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3 Installation 3.4 Technical specifi cations The tables below contain the technical data. 3.4.1 Dimensions of the device Top and bottom views of the device Legends See the table. IMD-0529 R1 Dimensions (all sizes in mm, unless stated otherwise) Dimension Description TWI 35-130 TWI 45-190 A Overall height 1270 1620 D Device diameter 560 560 E Depth 730 730 G Diameter fl ue gas discharge/air supply 80/125 80/125 H Height fl ue gas discharge/air supply 385 385 Hx x-position fl ue gas discharge 300 30
