Rheem RUTG2-42(PVN)(PVP), PTG2-42(PVN)(PVP) You can find them on a label on the appliance, Injury

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Safety Information

Safety Precautions . . . . . . . 3–6 LP Gas Models . . . . . . . . . . . 5

Installation Instructions

Location, Outdoor. . . . . . . . . . 7

Location, Indoor . . . . . . . . . 8, 9

Venting . . . . . . . . . . . . . . 10-15

Water Connections. . . . . 16-18

Gas Supply. . . . . . . . . . . . . . 19

High Altitude . . . . . . . . . . . . 19

Remote Control . . . . . . . 20, 21

Electrical Connection . . . . . . 22

Typical Installation . . . . . . . . 23

Pipe Insulation . . . . . . . . . . . 24

Installation Checklist . . . . . . 25

Operating Instructions

Lighting Instructions . . . . . . 26 Water Temperature. . . . . 27, 28

Care and Cleaning

Maintenance. . . . . . . . . . . . . 29

Housekeeping . . . . . . . . 29, 30

Vent Inspection . . . . . . . . . . . 30

Burner Inspection . . . . . . . . 30

Extended Shut-Down . . . . . . 30

Draining . . . . . . . . . . . . . . . . 31

Freeze Protection . . . . . . . . . 31

Troubleshooting Tips

Before You Call

For Service. . . . . . . . . . . 32, 33

FOR YOUR RECORDS

Write the model and serial numbers here:

#

#

You can find them on a label on the appliance.

Staple sales slip or cancelled check here.

Proof of the original purchase date is needed to obtain service under the warranty.

READ THIS MANUAL

Inside you will find many helpful hints on how to use and maintain your water heater properly. A little preventive care on your part can save you time and money over the life of your water heater.

You’ll find many answers to common problems in the Troubleshooting Guide. If you review the chart of Troubleshooting Tips first, you may not need to call for service.

READ THE SAFETY INFORMATION

Your safety and the safety of others are very important. There are many important safety messages in this manual and on your appliance. Always read and obey all safety messages.

This is the safety alert symbol. Recognize this symbol

!as an indication of Important Safety Information! This symbol alerts you to potential hazards that can kill or hurt you and others.

All safety messages will follow the safety alert symbol and either the word “DANGER”, “WARNING”, “CAUTION” or “NOTICE”.

These words mean:

 

! DANGER

An imminently hazardous situation

 

that will result in death or serious

 

injury.

Customer Service

Parts List. . . . . . . . . . . . . . . . 34 If You Need Service . . . . . . . 36

Qualified Installers Only!

Dip Switch Adjustment . . . 35

2

!WARNING

!CAUTION

Notice:

A potentially hazardous situation that could result in death or serious injury and/or damage to property.

A potentially hazardous situation that may result in minor or moderate injury.

Attention is called to observe a specified procedure or maintain a specific condition.

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Contents Tankless Water Heater Defects or other reproductive harmInjury You can find them on a label on the applianceThat will result in death or serious Install and Properly Vent the Water HEATER… N G E R Natural GAS and Liquefied Petroleum Models Read and Follow this Safety Information Carefully Installing the Outdoor water heater Location of the Outdoor water heaterInstalling the Indoor water heater Location of Indoor Water HeaterCorrosive Atmospheres Installing the water heaterCombustion and Ventilation Air Indoor Water Heater Only Inspect ShipmentMaximum Vent Length VentingVenting Lengths Minimum Vent Length The ventingDraining the Condensate Venting Through Closed SpacesAppliance Vent Adapter Canadian Installations Horizontal Vent Terminal LocationIndoor Water Heater Additional ConsiderationsVent Horizontal Wall Thimble Installation Vertical Vent Installation Vertical Vent Termination LocationWater Supply Connections Mounting the Water HeaterThermal Expansion Lines.Relief Relief Valve InletGas Supply Leak TestingPressure Testing the Gas Supply System High AltitudeRemote Control Installation Remote Control Installation Connecting the remote control to the water heaterIndoor or Outdoor water heaters Electrical ConnectionIndoor water heaters only Switch Indoor ModelsInsulation Blankets Hot and Cold Pipe Insulation InstallationDuring Installation of this water heater… Do’sInstallation Check List Lighting the water heater To Turn OFF GAS to ApplianceTime/Temperature Relationship in Scalds Safety PrecautionsWater Temperature Setting Operating the water heaterWater Temperature Setting… Drain heater. See Draining Water Heater section on Routine Preventative MaintenanceHousekeeping Vacation and Extended Shut-Down Venting System InspectionBurner Inspection Condensate Trap InspectionDraining the Water Heater Freeze ProtectionBefore You Call For Service… Indoor Water Heater Only Outdoor Water Heater OnlyReplacement Parts Instructions For Placing a Parts OrderTemperature Setting DIP Switch Adjustment If YOU Need Service

RUTG2-42(PVN)(PVP), RUTG2-53-(PVN)(PVP)(XN)(XP), RTG2-53-(PVN)(PVP)(XN)(XP), PH-16(FISN)(FISP), RMTG2-53-(PVN)(PVP)(XN)(XP) specifications

Rheem’s innovative line of tankless water heaters, including the PTG2-42(PVN)(PVP), RTG2-42(PVN)(PVP), PH20R-(IFSN)(IFSP)(OFN)(OFP), RMTG2-42(PVN)(PVP), and RMTG2-53-(PVN)(PVP)(XN)(XP), represents a significant advancement in residential and commercial water heating technologies. These models are designed to deliver hot water on demand, ensuring efficiency and convenience while minimizing energy consumption.

One of the standout features of these Rheem models is their energy efficiency. Employing advanced condensing technology, they are capable of converting up to 98% of the energy consumed into hot water. This impressive efficiency reduces utility bills and makes them an environmentally friendly choice compared to traditional tank water heaters.

The PTG2 and RTG2 series are particularly versatile, accommodating various installation needs. Their compact design allows for both indoor and outdoor installation, making them ideal for homes with limited space. Additionally, they are equipped with a multiple venting option, which provides flexibility in installation locations.

The PH20R series incorporates Rheem’s proprietary modeling and simulation technologies to optimize performance. These models feature enhanced safety functions and user-friendly digital controls, allowing homeowners to easily set and monitor their water temperatures. The ease of use extends to maintenance as well, as many components are accessible for routine checks and cleaning.

Another significant advantage of the RMTG2 models is their integrated Wi-Fi connectivity, enabling users to manage their water heating systems remotely through Rheem’s mobile app. This smart technology provides real-time data, alerts, and allows for temperature adjustments, ensuring that users always have hot water when they need it.

Rheem’s tankless water heaters also boast a robust warranty, a testament to their durability and reliability. With options that cater to various household sizes and hot water needs, these models can provide continuous hot water for homes with multiple bathrooms and heavy consumption.

For those seeking cost-effective, efficient, and smart water heating solutions, the Rheem PTG2, RTG2, PH20R, RMTG2-42, and RMTG2-53 series stand out as top contenders in the market. Their combination of advanced technology, energy savings, and user-friendly features position them as industry leaders, providing long-term benefits for any homeowner.