Rheem PTG2-42(PVN)(PVP), PH-16(FISN)(FISP), RUTG2-42(PVN)(PVP) warranty Relief Valve, Inlet

Page 18

Installing the water heater:

Drain Valve

shown on

right without tubing (barb fitting on indoor models only)

Drain

Valve

Relief Valve

A new pressure relief valve, complying with the Standard for Relief Valves and Automatic Gas Shut-Off Devices for Hot Water Supply Systems, ANSI Z21.22/ CSA 4.4, must be installed at the hot water outlet connection of the water heater at the time of installation. Local codes shall govern the installation of relief valves.

For safe operation of the water heater, be sure that:

The end of the discharge line should not be threaded or concealed and should be protected from freezing. No valve of any type, restriction or reducer coupling should be installed in the discharge line.

Notice: Local codes govern the installation of relief valves. If local codes require that a temperature and pressure relief valve should be installed, the manufacturer recommends a type 40XL Watts T&P relief valve or an equivalent model be used.

Pressure

Relief

Valve

 

Union

 

 

 

Water

 

 

 

Shutoff

 

 

 

Valve

 

 

Relief

 

 

 

Valve

Hot Water

 

 

Discharge

Drain

 

Supply

Cold

Line

Tube to

Outlet

 

suitable

Water

 

 

 

 

drain

Supply

 

 

(indoor

Inlet

 

 

models

 

 

 

only)

 

Notice: The above illustrates a pressure-only relief valve. If local codes require a combination temperature and pressure relief valve be installed, an extension piece may be needed to ensure that the valve probe is not directly in the flow path of the water.

The pressure rating of the relief valve must not exceed 150 psi (1034 kPa), the maximum working pressure of the water heater as marked on the rating plate.

The BTUH rating of the relief valve must equal or exceed the BTUH input of the water heater as marked on its rating plate.

No valve of any type should be installed between the relief valve and the water heater

Discharge from the relief valve should be piped to a suitable drain to eliminate potential water damage. Piping used should be of a type approved for the distribution of hot water.

Hot and cold water lines should be insulated up to the water heater. Refer to page 24 for details.

The discharge line must be NO SMALLER than the outlet of the relief valve and must pitch downward to allow complete drainage (by gravity) of the relief valve and discharge line.

Notice: Manual operation of relief valves should be performed at least once a year. Turn off the electrical power and gas shutoff valve. Lift and release lever on the relief valve and check the manual operation of the relief valve. You should take precaution to avoid contact with the hot water coming out of the relief valve and to prevent water damage.

Notice: If the relief valve on the system discharges periodically, a problem exists and service to the water system is required.

The vinyl tubing as shown is supplied only with indoor water heaters and connects to the drain valve located at the hot water outlet as shown in the diagram at left. Route the other end of the vinyl tubing to the drain pan or a suitable drain where leakage from the heater will not result in damage to the area adjacent to the heater or to lower floors of the structure.

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Contents Tankless Water Heater Defects or other reproductive harmYou can find them on a label on the appliance That will result in death or seriousInjury 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 ventingVenting Through Closed Spaces Appliance Vent AdapterDraining the Condensate Canadian Installations Horizontal Vent Terminal LocationIndoor Water Heater Additional ConsiderationsVent Horizontal Wall Thimble Installation Vertical Vent Installation Vertical Vent Termination LocationMounting the Water Heater Thermal ExpansionWater Supply Connections 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 heaterElectrical Connection Indoor water heaters onlyIndoor or Outdoor water heaters 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… Routine Preventative Maintenance HousekeepingDrain heater. See Draining Water Heater section on 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.