Gas Supply, Leak Testing, High Altitude

WARNING: Do not attempt to convert this water heater for use with a different type of gas other than the type shown on the rating plate. Such conversion could result in hazardous operating conditions.

Manual

Gas

Supply

Line

Shutoff

Manual Gas

Appliance

Shutoff

Union

Sediment Trap

Cap

Gas Supply

The supplied Manual Gas Appliance Shutoff Valve must be installed at the gas connection of the water heater at the time of installation (see diagram to the left).

The branch gas supply line to the water heater should be a minimum of 3/4” black steel pipe or other approved gas piping material.

A ground joint union or ANSI design certified semi-rigid or flexible gas appliance connector should be installed in the gas line close to the water heater. The National Fuel Gas Code (NFGC) ANSI Z223.1 and CAN B149 code mandates a manual gas shut-off valve: See NFGC & B149 for complete instructions.

If flexible connectors are used, the maximum length shall not exceed 36” (91 cm).

If lever type gas shut offs are used, they shall be T-Handle type.

Compound used on the threaded joints of the gas piping must be of the type resistant to the action of LP gas. Use compound sparingly on male threads only.

Do not use excessive force (over 31.5 ft lbs. [42.7 Nm]) in tightening the pipe, particularly if teflon pipe compound is used, as the unit may be damaged.

The inlet gas pressure to the water heater must not exceed 10.5” w.c. (2.6 kPa) for natural or 14” w.c. (3.5 kPa) for LP gas. For purposes of input adjustment, the minimum inlet gas pressure (with main burner on) is shown on the water heater rating plate. If high or low gas pressures are present, contact your gas supplier for correction.

NOTICE: To ensure proper operation of the heater the gas pipe and gas meter must be sized correctly.

Gas piping shall be in accordance with local, utility company requirement and/or in the absence of local codes, use the latest edition of the National Fuel Gas Code. In Canada, the latest edition of CSA B149.1 Natural Gas and Propane installation code.

A sediment trap should be installed at the bottom of the gas line.

WARNING: Never use an open flame to test for gas leaks, as property damage, personal injury, or death could result.

Leak Testing

The water heater and its gas connections must be leak tested at normal operating pressures before it is placed in operation.

Turn on the gas shut-off valve(s) to the water heater.

Use a soapy water solution to test for leaks at all connections and fittings. Bubbles indicate a gas leak that must be corrected.

The factory connections should also be leak tested after the water heater is placed in operation.

WARNING: Install a gas pressure regulator, in the gas supply line, which does not exceed the maximum supply pressure.

DO NOT use an industrial type gas regulator.

Pressure Testing the Gas Supply System

The water heater and its manual gas shut-off	The water heater must be isolated from the
valve must be disconnected from the gas	gas piping system by closing the manual gas
supply piping system during any pressure	shut-off valve during any pressure testing of
testing of the system at pressures in excess	the gas supply piping at pressures equal to or
of 1/2 psi (14” w.c. [3.5 kPa]).	less than 1/2 psi (14” w.c. [3.5 kPa]).

High Altitude

This water heater is certified for installations up to 3,280 feet (1000 m) above sea level. The input rating of this water heater is based on sea level operation. At higher elevations, the actual input rate may be lower than the value listed on the rating label.

NOTICE: Select High Altitude models are available. One model is available for use at elevations above 3,280 feet (1,000 m) up to 6,560 feet (2,000 m), and an additional model is available for use at elevations above 6,560 feet (2,000 m) up to 9,840 feet (3,000 m).

NOTICE: For installations above 3,280 feet (1,000 m) elevation, the Altitude Chip on the PC board must be replaced. Do not install this water heater at elevations above 3,280 feet (1,000 m) without installing the proper Altitude Chip. Please contact your installer, local gas supplier, place of purchase or the Customer Service phone number as listed in this Use & Care Manual for more information.

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.

Rheem PH-16(FISN)(FISP) Leak Testing, Pressure Testing the Gas Supply System, High Altitude

Models: 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) RMTG2-42(PVN)(PVP) PH20R-(IFSN)(IFSP)(OFN)(OFP) RTG2-42(PVN)(PVP) PTG2-42(PVN)(PVP)