User Guide

2 RH180 Manual
Table of Contents
This is the safety alert symbol. This symbol alerts you to potenal hazards that can kill or hurt you
and others.
Indicates an imminently hazardous situaon which, if not avoided, will result in death or
serious injury.
Indicates a potenally hazardous situaon which, if not avoided, could result in death or
serious injury.
Indicates a potenally hazardous situaon which, if not avoided, could result in minor or
moderate injury. It may also be used to alert against unsafe pracces.
DANGER
CAUTION
WARNING
Safety Denions
NOTICE: Rinnai somemes shares customer contact informaon with businesses that we believe provide
products or services that may be useful to you. By providing this informaon, you agree that we can
share your contact informaon for this purpose. If you prefer not to have your informaon shared with
these businesses, please contact customer service and ask not to have your informaon shared. We
will however, connue to contact you with informaon relevant to the product(s) you registered and/
or you account with us.
If you have any quesons or feel that the manual is incomplete contact Rinnai at 1-800-621-9419.
Safety Denions ............................................. 2
Safety Behaviors and Pracces
for the Consumer and Installer ...................... 3-5
Installaon Instrucons
Installer Qualicaons ..................................... 6
General Instrucons ......................................... 6
Determine Installaon Locaon....................... 8
Installaon Locaon ......................................... 9
Checklist to Determine Locaon .................... 10
Minimum Clearances ..................................... 11
Typical Installaon Illustraon ....................... 12
Combuson Air Requirements ................. 13-15
Venng Requirements ............................. 16-19
Checklist for Combuson Air
and Venng ................................................... 20
Installaon of Plumbing ................................. 21
Checklist for Plumbing ................................... 22
Massachuses-Required Plumbing ............... 23
Installaon of Gas Supply ......................... 24-25
Connect Electricity ......................................... 26
Adjust for High Altude ................................. 26
Checklist for Gas and Electricity .................... 26
Final Checklist ................................................ 27
Technical Data
Specicaons ................................................. 28
Dimensions .................................................... 29
Wire Diagram ................................................. 30
Parts Breakdown ............................................ 31
Operaon
Consumer Operaon Guidelines
for the Safe Operaon of
your Water Heater ......................................... 32
How to use the Temperature Controller ....... 33
Diagnosc Codes and Remedies ............... 35-36
Required Maintenance
Air Screen ....................................................... 37
Water Filter .................................................... 38
Required Maintenance .............................. 39-40
Consumer Support
Warranty Registraon Informaon ............... 41
Limited Warranty ...................................... 41-43