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Summary of Contents for Rinnai Reu-VRM1120WD-E
- Page 1 Service Manual Continuous Flow Water Heater Important. Read these instructions carefully before attempting installation or use of this appliance. All work must be carried out by competent persons.
- Page 3 June 2010—Issue 1 This manual is intended for use by Gas Safe Regisetred Engineers...
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Page 4: Table Of Contents
CONTENTS Glossary of terms and Symbols…………..………..…….…………………………..….5 Introduction …………………….………...……...………………….……………6 Specification ……………….…………..….…..………………….………………7 Water Flow Rates and Pressures …………..…..……………………………...… 9 Dimensions …………………………………...…...……………………………10 Remote Controls……………………………….………………...……………..11 Cutaway Diagram……………………………….……………………………..14 Operational Flow Chart……………………….……………………………….….16 Main Components……………………………….…….…………………………..17 Wiring Diagram………………………………………..………………………..19 10. Dip Switch Setting……………………………………..……………………...…..20 11. Error Codes……………………………………………………………………..….21 12. Diagnostic Points………………………...…..…………………………..….…..…22 13. -
Page 5: Glossary Of Terms And Symbols
Glossary of Terms and Symbols... -
Page 6: Introduction
Introduction... -
Page 7: Specification
Specification... - Page 8 Specification...
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Page 9: Water Flow Rates And Pressures
Water Flow Rates and Pressures... -
Page 10: Dimensions
Dimensions... -
Page 11: Remote Controls
Remote Controls... -
Page 12: Temperature Controls - Operating
TEMPERATURE CONTROLS - OPERATING Using 2 or more Universal Temperature Controllers. Switching the system ON. The hot water system and all controllers can be switched ON and OFF from any controller by pressing the ON/OFF button as shown. When the system is turned ON the water temperature display will be lit. - Page 13 TEMPERATURE CONTROLS - INFORMATION Do not push the ON/OFF button on the Temperature priority cannot be switched Master controller after transferring priority to another controller when the water is of temperature selection to a Secondary flowing through the water heater. controller as the system will shut down.
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Page 14: Cutaway Diagram
Cutaway Diagram... - Page 15 Cutaway Diagram...
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Page 16: Operational Flow Chart
Operational Flow Chart... -
Page 17: Main Components
Main Components... - Page 18 Main Components...
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Page 19: Wiring Diagram
Wiring Diagrams... -
Page 20: Dip Switch Setting
Dip Switch Settings... -
Page 21: Error Codes
Error Codes... -
Page 22: Diagnostic Points
Diagnostic Points... -
Page 23: Gas Pressure Setting
Gas Pressure Setting... - Page 24 Gas Pressure Settings...
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Page 25: Servicing
Servicing Burner... - Page 26 Servicing ANNUAL SERVICE See Page 25 Isolate gas supply and electric supply Remove Front Panel by means of 4 corner screws Remove all screws around outer edge of manifold (11) and remove Inspect and clean injectors on inside of manifold (B). If heavily contami- nated remove front cover plate (A) and clean from inside out DO NOT RE-DRILL or ENLARGE ORIFICE Remove Ignition lead and Ionisation lead...
- Page 27 Servicing Isolate water connections below heater Remove Filter (14) Inspect and clean as required Replace and re-instate water supply Remove gas valve (15) test nipple (K) and connect manometer Re instate Gas supply & Electric Supply Open water outlet and get maximum water flow possible Check burner pressure as per page 23 1.68 1.68...
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Page 28: Spares List
Spares... - Page 29 Spares...
- Page 30 Spares...
- Page 31 Spares...
- Page 32 Spares...
- Page 33 Spares...
- Page 34 Spares...
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Page 35: Warranty
U K Warranty... -
Page 36: Contact
U K Contact Ver 1 19/10/21 RUK Tech Dept Ian Jenkins...
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Questions and answers
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If you have low water pressure with the Rinnai REU-VRM1120WD-E, check if your water supply pressure meets the minimum requirement of 1.2 bar at the appliance inlet. If the supply pressure exceeds 10 bar, install an approved pressure-reducing device. Keep in mind that high-temperature setpoints can reduce the available flow rate. If pressure remains low, inspect for possible restrictions or leaks in the water supply system.
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