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Installation Installation
User and User and
Service Manual Service Manual
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w w w . a o s m i t h i n t e r n a t i o n a l . c o m your installer
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gis Read this manual carefully Warning Read this manual carefully before starting up the water heater. Failure to read this manual and to follow the instructions in this manual may lead to accidents, personal injury, and damage to the appliance. Copyright © 2008 A.O. Smith water Products Company All rights reserved. Nothing from this publication may be copied, reproduced and/or published by means of printing, photocopying or by whatsoever means, without the prior written approval of A.O. Smi
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gis 4 Instruction manual SGS
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gis Table of contents 1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - 9 1.1 About the appliance - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9 1.2 What to do if you smell gas- - - - - - - - - - - - - - - - - - - - - - - - - 9 1.3 Regulations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9 1.4 Target groups - - - - - - - - - - -
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Table of contents 7.6 PC connection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 56 8 Status of the appliance - - - - - - - - - - - - - - - - - - - - - 57 8.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 57 8.2 Operating modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 57 8.3 EXTRA - - - - - - - - - - - - - - -
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15 Performing maintenance - - - - - - - - - - - - - - - - - - - - 93 15.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 93 15.2 Preparation for maintenance - - - - - - - - - - - - - - - - - - - - - - - 93 15.3 Water-side maintenance - - - - - - - - - - - - - - - - - - - - - - - - - 95 15.4 Gas-side maintenance - - - - - - - - - - - - - - - - - - - -
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Table of contents 8 Instruction manual SGS
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gis 1 Introduction 1.1 About the appliance This manual describes how to install, service and use the SGS appliance. The SGS appliance is a condensing boiler with a fan in the air intake. The appliance is always supplied including a storage tank fitted with a heat exchanger connected to a solar energy source. The SGS can be installed as either an open or room-sealed appliance. A concentric chimney connector is fitted standard to the appliance, but a parallel system can also be connected. The
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1 Introduction gis Furthermore, the installation must comply with the manufacturer's instructions. Note Later amendments and/or additions to all regulations, requirements and guidelines published on or prior to the moment of installing, will apply to the installation. The three target groups for this manual are: 1.4 Target groups • (end) users; • installation engineers; • service and maintenance engineers. Symbols on each page indicate the target groups for whom the information is intended. S
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gis 1.7 Overview of this document Chapter Target groups Description Working principle of the This chapter describes the working principle of the appliance appliance. Installation This chapter describes the installation activity to be completed before you start the appliance for the first time. Conversion to a different gas This chapter describes the activities required to convert category the appliance to a different gas category. Filling This chapter describes how to fill the appliance. Dr
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1 Introduction gis 12 Instruction manual SGS
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gis 2 Working principle of the appliance 2.1 Introduction Topics covered in this chapter: • General working principle of the appliance; • The appliance's heating cycle; • Protection for the appliance; • Safety of the installation; • Protection for the solar heating system. 2.2 General working The figure shows a cut-away view of the appliance. principle of the In this appliance, the cold water enters the bottom of the tank through the cold appliance water inlet (14). Once the appliance and th
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2 Working principle of the appliance gis Cut-away view of the appliance 19 Legend 1 Only applicable numbers are 25 mentioned. 5 2 1. cover 4 2. hot water outlet 26 3. electrical connector block 27 4. electronic controller 7 5. pressure switch 6 6. control panel 28 7. temperature sensor T 1 3 16 8. combustion chamber 9 9. anode 8 10. tank 11. heat exchanger 18 10 12. inspection and cleaning opening 20 11 13. temperature sensor T 2 17 22 14. cold water inlet 15. drain valve 21 16.
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gis fluid (S ) is a certain (adjustable) value higher than the temperature 1 measured at the appliance (sensor S ). As soon as (T = T = T ), 2 net set solar limit heating via the solar heating system is stopped. There is one exception to this rule, and that is when T is set to a higher value than T . solar limit set • Hysteresis The moment T falls below (T - T - Hysteresis), the controller net set solar diff registers such a heat demand that the gas burner and the solar heating system joint
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2 Working principle of the appliance gis 2.4.2 Appliance water temperature protection The electronic controller uses temperature sensors T (7) and T to monitor 1 2 several temperatures that are important for safety. The table explains the functioning of these temperature sensors. Temperature protection Protection Description Against frost: The frost protection cuts in. The water is heated to 20°C. - T < 5°C 1 - T < 5°C 2 For maximum water temperature: The high-limit safeguard serves to prevent
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gis 2.4.6 Pressure switch The pressure switch ensures the discharge of flue gases and the supply of incoming air during the pre-purge and normal running of the appliance. The default state of the pressure switch is open. When sufficient pressure difference is reached, the pressure switch closes. However, in the event of a fault, the pressure switch is tripped open, and the heating cycle is interrupted. The table shows the trip point per appliance. Note The trip point of the pressure switch
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2 Working principle of the appliance gis appliance is under water supply pressure, cold water will automatically flow into the tank. The valve remains open until the unsafe situation has been rectified. The appliance is fitted standard with a connecting point for a T&P valve (3.7.2 "Hot water side"). 2.5.4 Protection for the solar heating system Drain-back tank The solar heating system may optionally be equipped with a drain-back tank. The tank fills itself with the heating fluid when there
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is 3 Installation Warning Installation work should be carried out by an approved installation engineer in compliance with the general and local regulations imposed by the gas, water and power supply companies and the fire service. The appliance may only be installed in a room that complies with the requirements stated in national and local ventilation regulations (1.3 "Regulations"). This chapter describes the installation activities to be carried out before you 3.1 Introduction actually st
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3 Installation is 3.3.1 Air humidity and ambient temperature The boiler room must be frost-free, or be protected against frost. The table shows the environmental conditions that must be adhered to for correct functioning of the electronics present in the appliance to be guaranteed. Air humidity and ambient temperature specifications Air humidity and ambient temperature Air humidity max. 93% RV at +25°C Ambient temperature Functional: 0 < T < 60°C 3.3.2 Maximum floor load In regard to the total
