Rinnai REB-A1847FF-US User Manual

Rinnai I-Series Condensing Boiler Combi Manual
Central Heang and Domesc Hot Water
INSTALLATION AND OPERATION MANUAL
I-Series Condensing Boiler
Wall-Mounted, Gas-Fired Combi Boiler
Cered to ANSI Z21.13
and CSA 4.9
COMBI MODELS
i060C (REB-A1847FF-US)
i090C (REB-A2647FF-US)
i120C (REB-A3558FF-US)
READ AND SAVE THIS MANUAL
If the informaon in these instrucons are not followed exactly, a re or explosion may
result causing property damage, personal injury, or loss of life.
 Do not store or use gasoline or other ammable vapors and liquids in the vicinity of this or any other appliance.
 WHAT TO DO IF YOU SMELL GAS
 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 neighbor’s phone. Follow the gas supplier’s instrucons.
 If you cannot reach your gas supplier, call the re department.
 Installaon and service must be performed by a qualied installer, service agency or the gas supplier.
WARNING
K H167-0771-1(00)

Rinnai REB-A1847FF-US Specifications

General

Category	Boiler
Model	REB-A1847FF-US
Fuel Type	Natural Gas
Vent Type	Direct Vent
Weight	82 lbs
Warranty	12 years heat exchanger, 5 years parts
Water Connection Size	1-1/4" NPT
Vent Size	3" PVC

Summary

Boiler Installation and Setup

Installation Guidelines

Covers requirements for installation, codes, grounding, pressure testing, and combustion air.

Choose Installation Location

Discusses clearances, environmental factors, and water quality considerations for site selection.

Venting Guidelines

Connect Gas Supply

Covers checking gas type/pressure, leak testing, pipe sizing, and connecting the supply line.

DHW System Piping

CH System Piping

Power Supply Connection

Explains electrical requirements, grounding, and connection procedures for safe operation.

Commissioning and Filling Process

Covers safety, filling, and deaeration steps necessary before initial boiler operation.

Boiler Operation

Start-Up Information

Diagnostic Codes and Troubleshooting

Lists common error codes, their causes, and basic troubleshooting steps for diagnosis.