Rinnai RGBCTWHRX User Manual

3
Recess Box Part Number RGBCTWHRX
For Use with Rinnai Tankless
Water Heater Models:
Item # Item Qty
Recess Box
1
Front Door Panel
1
Vent Bracket
1
Vent Cap
1
8-32 Lock Nut with Washer 3
10-32 Lock Nut 3
Locking Bracket 1
Installaon Instrucons (this document) 1
• Standard plumbing tools, such as pliers, pipe wrenches and screwdrivers
• Isolaon Valve Kit
• Sealant and Caulk Gun
• Drill (for drilling the piping connecons)
• Screws (galvanized or stainless steel to secure the recess box to the building structure)
• Phillips Head Screwdriver
Before installaon, please make sure all parts are located inside the product box.
WARNING
• Failure to correctly assemble the components according to these instrucons may result in electric shock, injury,
or death.
• A trained and qualied professional must install and inspect the recess box before use.
• Warranty will be voided due to any improper installaon.
• For outdoor installaon only.
• Make sure the recess box is accessible for servicing and maintenance of the water heater.
• RX199i (REU-NB3237FF-US)
• RX180i (REU-NB2934FF-US)
• RX160i (REU-NB2530FF-US)
• RX130i (REU-NB2024FF-US)
• RXP199i (REU-NBP3237FF-US)
• RXP160i (REU-NBP2530FF-US)
• CX199i (REU-NB3237FFC-US)
• CX160i (REU-NB2530FFC-US)
• CXP199i (REU-NBP3237FFC-US)
• CXP160i (REU-NBP2530FFC-US)
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Rinnai RGBCTWHRX Specifications

General

Brand	Rinnai
Model	RGBCTWHRX
Category	Control Unit
Language	English

Summary

Rinnai Recess Box Product Information

Compatible Water Heater Models

Lists Rinnai Tankless Water Heater models compatible with the recess box.

Included Components

Details all parts included inside the product box for the recess box.

Required Field-Supplied Tools

Lists tools and materials needed from the user for installation.

Critical Safety Warnings

General Installation Hazards

Warns about electrical shock, injury, death from incorrect assembly or professional installation.

Installation Steps - Location and Wall Preparation

Determine Location and Clearances

Specifies requirements for choosing a safe installation location based on clearances.

Prepare the Wall for Installation

Details the outer dimensions and framing preparation needed for the recess box.

Installation Steps - Recess Box and Framing

Framing Layouts

Provides suggested framing layouts for recess box installation.

Prepare the Recess Box

Instructions for removing the front door panel and drilling mounting holes.

Installing the Recess Box

Piping Cutout Template

Details the template for determining cutout locations for piping on the recess box.

Sealant Application and Mounting

Instructions for applying sealant and securing the recess box to the building structure.

Install Water Heater into Recess Box

Prepare Recess Box

Remove vent bracket from recess box for later use.

Prepare Water Heater

Remove exhaust adapter ring and install vent cap on water heater.

Position Water Heater

Lift water heater into recess box, aligning bottom bracket.

Secure Water Heater and Install Vent Bracket

Secure Water Heater

Push water heater in, align top bracket with studs, and secure with nuts.

Install Vent Bracket

Reassemble vent bracket through exhaust vent, aligning slots and installing locking bracket.

Connecting Utilities and Sealing

Connect Water Heater Pipes

Remove caps, install isolation valve kit, and route pipes through access holes.

Connect Gas, Water, and Electric

Connect gas, water, and electric service, ensuring compliance with codes.

Seal Recess Box Openings

Seal all access hole penetrations with sealant to prevent moisture leaks.

Adjust Parameter Settings

Safety Precautions

Provides caution, warning, and important notes regarding parameter adjustments.

Option 1: Bluetooth Smart Device Setup

Guides for adjusting settings using the Rinnai Central app via Bluetooth.

Adjust Parameter Settings via Controller

Option 2: Integrated Controller Setup

Steps for adjusting settings directly on the tankless water heater's integrated controller.

Final Assembly and Inspection

Installation Checklist

Complete the post-installation checklist from the manual.

Check for Leaks and Install Door

Check for gas/water leaks and install the recess box front door panel.

Appendix A: Termination Clearances

Clearance Requirements Table

Details required clearances for vent termination based on Canadian and US codes.