Rinnai RC80I Water Heater User Manual

Tankless Water Heater

Operation and Installation Manual

FOR INDOOR APPLICATIONS ONLY

i ... REU-KAFFUD-US

i ... REU-KAFFUD-US

FOR OUTDOOR APPLICATIONS ONLY

e ... REU-KAWD-US

e ... REU-KAWD-US

Table of Contents ...

Consumer Safety Information .. 4

Operating Instructions... call 1-866-RINNAI1 (746-6241)

Maintenance ...

Error Codes ...

Installation Instructions ...

Consumer Support...

French Version ...

INSTALLER: Leave this manual with the appliance.

CONSUMER: Retain this manual for future reference.

WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.

Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

WHAT TO DO IF YOU SMELL GAS

ANS Z21.10.3

Do not try to light any appliance.

Do not touch any electrical switch; do not use any phone in your building.

Immediately call your gas supplier from a neighbors phone.

Follow the gas suppliers instructions.

If you cannot reach your gas supplier, call the fire department.

Installation and service must be performed by a qualified installer, service agency or the gas supplier.

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.

Table of Contents

Specifications ...

Consumer Safety Information

Safety Definitions ...

Safety Behaviors and Practices ...

Safety Features ...

Description of Operation ...

Operating Instructions

Features Available on Temperature

Controllers ...

Temperature Controller ...

How to Set the Temperature ...

Temperature Controller Settings ...

Temperature Options Without

a Temperature Controller ...

Setting the Sound Volume ...

Using the Water Smart / Bath Fill Function

Overview...

Setting the Water Volume ...

Filling the Tub ...

Setting Controller to Mute ...

Setting the Clock ...

Maintenance

Cleaning ...

Vent System ...

Air Intake ...

Motors...

Temperature Controller ...

Lime / Scale Buildup ...

Snow Accumulation ...

Visual Inspection of Flame ...

Error Codes

Error Code Table ...

Trouble Shooting for Common Issues ...

Accessing Operating Information ...

Water Quality ...

Flushing the Heat Exchanger...

(Error Code: LC or 00)

Installation Instructions...

General Instructions ...

Clearances from Appliance ...

Attachment of the Water Heater ...

Electrical Connection ...

Error Indication or Air Handler Control Switch18

Gas Piping

General Instructions...

Pipe Sizing Procedure - Example ...

Water Piping

Isolation Valves and

Pressure Relief Valves ...

General Instructions ...

Pressure Relief Valve ...

Freeze Protection ...

Freeze Protection Piping ...

Recommended Piping for Basic Installation .. 23

Recommended Piping for

Circulation Systems ...

Venting Instructions

Intake / Exhaust Guidelines ...

Condensate ...

Maximum Vent Length...

Vent Products ...