Water Supply Connections, continued

CAUTION: This water heater must only be used with the following water supply system conditions:

●With clean, potable water free of corrosive chemicals, sand, dirt or other contaminates.

●With inlet water temperatures above 32°F (0°C), but not exceeding 120°F (49°C).

●Free of lime and scale deposits.

●DO NOT reverse the hot and cold water connections. The water heater will

not operate.

Water Filter

Clean the

Water Filter

Water Inlet

Check Valve

Nipple

Water

Notice: Use only teflon tape on cold and hot water connections and

Air

lines.Relief

Valve

Hot

Water

Tap

Drain Valve

This appliance is not intended for space heating application. Do not connect this heater to waterlines previously used for space heating

or non-potable water distribution. All water piping and components shall be suitable for potable water.

Notice: If the water flow resistance of a shower head is too high, the burner in the water heater will fail to ignite. Keep the shower head clean from debris that could cause additional pressure drop.

Notice: If using mixing valves on the outlet, choose one that prevents cold water pressure from overcoming hot water line pressure.

Notice: If multiple water heaters are installed in a manifold system, the water piping must be in “Parallel”. A water pressure of 40 psi (276 kPa) is recommended for each water heater for proper operation of the water heaters.

Alternate Water Piping Arrangement with Optional Valve Kit

Valve kits may be purchased and installed as optional items. Contact your distributor or place of purchase for details.They allow for one person full diagnostic testing and ease of flushing the system. The kit includes two full port isolation valves, one for the cold side and one for the hot side. Refer to page 23.

Install a shutoff valve near the inlet of the water heater for service and draining purposes.

It is not recommended to use pipes with smaller diameters than the water supply connection of the water heater.

Before connecting the water supply pipe to the water heater, open the shutoff valve and clean out sand, debris, air, caulking material, etc. inside the pipe. Connect to the water inlet, then check water flow. Close the shutoff valve and clean the water filter.

Be sure to connect the water inlet and the hot water outlet as shown on the water heater. If reversed, the water heater will not function.

Installation of unions or flexible copper connections are recommended on the HOT and COLD water lines, so that the water heater may disconnect easily for servicing, if necessary.

Install a Check Valve between the water heater and the water shutoff valve (see the top left diagram).

The following should be addressed in regards to the HOT WATER OUTLET:

●Connections between the water heater and point(s) of use should be as short and direct as possible.

●DO NOT use lead or plastic pipe.

●To conserve energy and minimize heat loss, insulation of hot water piping is recommended (see Hot and Cold Pipe Insulation Installation on page 24).

Notice: The flow rate of hot water may vary when more than two faucets (appliances, fixtures, etc.) are being used simultaneously.

Notice: The pipes MUST be completely drainable. If the hot water faucets are located at a point higher than the water heater, place a drain valve at the lowest point (see diagram at the left).

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Rheem RMTG2-53-(PVN)(PVP)(XN)(XP), PTG2-42(PVN)(PVP), PH-16(FISN)(FISP), RUTG2-42(PVN)(PVP), RTG2-42(PVN)(PVP) Lines.Relief
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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.
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