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2 Manual - Rinnai Condensing Water Heaters
Specifications ...................................................... 3
Consumer Safety Information
Safety Definitions ............................................. 4
Safety Behaviors and Practices ....................... 4
Safety Features ................................................ 4
Description of Operation .................................... 5
Operating Instructions
Features Available on Temperature
Controllers ........................................................ 5
Temperature Controller .................................... 6
How to Set the Temperature ............................ 7
Temperature Controller Settings .................. 7, 8
Temperature Options Without
a Temperature Controller ................................. 8
Setting the Sound Volume ............................... 8
Using the Water Smart / Bath Fill Function
Overview...................................................... 9
Setting the Water Volume ........................... 9
Filling the Tub ............................................ 10
Setting Controller to Mute .............................. 10
Setting the Clock ............................................ 10
Maintenance
Cleaning .................................................... 11
Vent System .............................................. 11
Air Intake ................................................... 11
Motors ........................................................ 11
Temperature Controller ............................. 11
Lime / Scale Buildup .................................. 11
Snow Accumulation ................................... 11
Visual Inspection of Flame ........................ 11
Error Codes
Error Code Table ...................................... 12,13
Trouble Shooting for Common Issues ........... 14
Accessing Operating Information ................... 14
Water Quality ................................................. 14
Flushing the Heat Exchanger ......................... 15
(Error Code: LC or 00)
Installation Instructions .................................... 16
General Instructions ....................................... 16
Clearances from Appliance ............................ 17
Attachment of the Water Heater .................... 17
Electrical Connection ..................................... 18
Error Indication or Air Handler Control Switch18
Gas Piping
General Instructions................................. 18
Pipe Sizing Procedure - Example ............ 19
Water Piping
Isolation Valves and
Pressure Relief Valves ............................ 20
General Instructions ................................ 21
Pressure Relief Valve .............................. 21
Freeze Protection .................................... 21
Freeze Protection Piping ................................ 22
Recommended Piping for Basic Installation .. 23
Recommended Piping for
Circulation Systems ....................................... 24
Venting Instructions
Intake / Exhaust Guidelines ..................... 25
Condensate ............................................. 25
Maximum Vent Length ............................. 26
Vent Products .......................................... 26
Flue Terminal Clearances
(ANS Z21.10.3, CSA 4.3
) .............................. 27
Additional Clearances - Vent Terminal
(RC80i, RC98i) ............................................... 28
Additional Clearances
(RC80e, RC98e) ............................................ 29
Flue Installation (RC80i, RC98i) .................... 30
Connecting Multiple Water Heaters ............... 31
High Altitude Installation ................................ 31
Temperature Controller Installation
Location ................................................... 33
Configurations .......................................... 33
Cable Lengths and Size ........................... 33
Mounting the Controller ........................... 34
Operating Instructions .................................... 35
Technical Data
Pressure Drop Curve ..................................... 36
Outlet Flow Data ............................................ 36
Space Heating ................................................ 37
Dimensions .................................................... 38
Ladder Diagram ............................................. 39
State Regulations .............................................. 40
Consumer Support
Warranty Information ..................................... 41
Limited Warranty ...................................... 41, 42
French Version ............................................. 43-62
Table of Contents
California Proposition 65 lists chemical substances known to the state to cause cancer, birth defects, death,
serious illness or other reproductive harm. This product may contain such substances, be their origin from fuel
combustion (gas, oil) or components of the product itself.