| 1) What is a tankless water heater? | | | | detailed installation and venting instructions. |
| Tankless water heaters are compact in size and | | | | 13) Can you adjust the water heater setpoint |
| provide a steady flow of hot water for as long as | | | | temperature setting in 1 degree increments? |
| you need it. Rheem tankless gas water heaters | | | | No, the minimum temperature adjustment for |
| are more energy efficient than conventional | | | | RTG series waters heaters is a 2 degree |
| water heaters, because the tankless models | | | | increments from 100 F up to 120 F and 5 F |
| eliminate the need for re-heating stored water. | | | | increments from 120 F to 140 F. |
| 2) How does the Rheem tankless water heater | | | | 14) What are the temperature setting options for |
| work? | | | | each model? |
| A conventional tank-style water heater stores hot | | | | The minimum temperature adjustment for GT |
| water, and heats the water 24/7, whether you | | | | series water heaters is a 2 degree increments |
| use it or not. The new generation Tankless | | | | from 100 F up to 120 F and 5 F increments from |
| Technology Water Heater from Rheem only | | | | 120 F up to 180 F. |
| heats water on demand. When the faucet is | | | | 15) What safety device is used to prevent |
| opened, the water flows through the Rheem | | | | overheat failure of the heat exchanger? |
| Tankless Water Heater, which heats it to the | | | | An Over Heat Limiting Film wrap is wrapped |
| temperature you've digitally set. When the faucet | | | | around the entire heat exchanger. This monitors |
| is closed, the Rheem Tankless Water Heater | | | | the temperature of the heat exchanger and will |
| senses the command, and goes to standby mode. | | | | shut the unit down if it exceeds a safe |
| 3) Can it be installed in the same place my old hot | | | | temperature. This is an exclusive feature of the |
| water heater was installed? | | | | Rheem tankless water heaters. |
| As long as enough combustion air is provided, | | | | 16) What is the minimum clearance on the back, |
| Rheem tankless water heaters can be installed in | | | | sides, top, bottom, and front of the water |
| a utility room, garage, basement, attic, or placed | | | | heaters? |
| on an outside wall. Plus, they can be installed in | | | | 0" back, 1/2" sides, 12" top, 12" bottom, and 12" |
| locations where a storage water heater may not | | | | front. |
| fit. The Digital Temperature Controller can be | | | | 17) What does the sensing burner do? |
| mounted in any room. | | | | The sensing burner is a device that detects |
| 4) Are tankless water heaters energy efficient? | | | | incomplete combustion during operation of the |
| Yes, tankless water heaters are very energy | | | | water heater. If incomplete combustion is |
| efficient. The Energy Factor, EF, of all Rheem | | | | detected, the water heater corrects the problem |
| tankless water heaters is over .81. By | | | | to provide clean, efficient water heater operation |
| comparison, a standard tank type water heater | | | | at all times. This is an exclusive feature of the |
| has an EF of around .62, so you can see that | | | | Rheem tankless water heaters. |
| they are inherently more efficient than a storage | | | | 18) Is there a standing pilot? |
| type water heater. | | | | No, the direct ignition sends a spark to the main |
| 5) Is a tankless water heater more energy | | | | burner when hot water flow is detected. This |
| efficient than a tank? | | | | feature improves the energy efficiency of the |
| Rheem tankless gas water heaters are more | | | | water heater. |
| energy efficient than conventional water heaters, | | | | 19) Can the water heater be installed at |
| because they eliminate the need to maintain a | | | | elevations that are 5,000 or 6,000 feet above |
| large supply of heated water. A Rheem tankless | | | | sea level? |
| water heater operates only when hot water is | | | | All Rheem tankless water heaters can be |
| needed. Regardless of whether you currently | | | | programmed to operate at elevations up to 9,840 |
| have a conventional electric or gas water heater, | | | | feet. Optional programming chips are available for |
| the Rheem tankless will save money on your | | | | elevations greater than 3,280 feet above sea |
| energy bills. In addition, every Rheem tankless | | | | level. One programming chip is available for |
| water heater qualifies for up to a $300 [tax | | | | elevations between 3,280 - 6,560 feet, and a |
| credit?] | | | | second optional chip is available for elevations |
| 6) What is the Energy Factor for the RTG-42 | | | | between 6,560 - 9840 feet. The chips install on |
| series water heaters? | | | | the water heater circuit board (PCB) in a matter |
| Answer: 0.83 | | | | of minutes and are available from the Rheem |
| 7) What is the Energy Factor for the RTG-53, | | | | Service Parts Department. This again is an |
| RTG-74 and 199 series water heaters? | | | | exclusive Rheem feature and is designed to insure |
| Answer: 0.82 | | | | proper combustion at these higher altitudes. |
| 8) Does this mean tankless water heaters have | | | | 20) Can I convert the water heater from LP to |
| lower operating costs? | | | | natural gas or natural gas to LP? |
| A higher EF is only one of many reasons why | | | | No, these units can not be converted from one |
| tankless water heaters cost less to operate. A | | | | fuel source to another. |
| Rheem tankless water heater has no standing | | | | 21) Where in my home can I install a Rheem |
| pilot light, no stand by loss, and the burners | | | | tankless water heater? |
| modulate to maintain maximum efficiency. | | | | The RTG-42PV, RTG-74PV, and GT-199PV indoor |
| 9) How do I ensure that I select a tankless water | | | | units are very versatile, and can be installed in a |
| heater in the appropriate size for my home? | | | | utility room, a garage, a basement, or an attic as |
| It's as easy as 1-2-3! If your home has only one | | | | long as enough combustion air is provided. As with |
| bathroom, a Rheem tankless RTG42 series water | | | | any appliance, consult local codes and the |
| heater provides an ample supply of continuous | | | | manufacturer Use and Care manual prior to |
| hot water for your needs. If your home has two | | | | choosing the site for installation. They may not be |
| bathrooms, a Rheem RTG-53 series water heater | | | | installed in a bedroom or bathroom, and are not |
| provides an ample supply of continuous hot water | | | | designed for use in mobile homes. The |
| for your needs. If your home has three | | | | RTG-53DV, RTG-74DV, and GT-199DV may be |
| bathrooms, choose a Rheem RTG74 series, which | | | | installed in all locations, including bedrooms and |
| can supply up to 3 showers simultaneously. | | | | bathrooms. These units obtain combustion air |
| Homeowners with 3 or more bathrooms and/or | | | | from the outdoors. These models are not |
| large volume multi-head showers should consider | | | | designed for use in mobile homes. The RTG-74X |
| linking (manifolding) 2, 3, or more of our tankless | | | | and GT-199X outdoor models are for outdoor |
| water heaters together. | | | | installations only, and are a great alternative if |
| 10) Does Rheem offer customer service for their | | | | your climate is appropriate. This saves space and |
| tankless water heaters? | | | | the cost of venting. |
| Yes! Rheem Customer Service is available 7 days | | | | 22) What are some reasons to use a tankless |
| a week/7 a.m. to 7 p.m. Central Time. The | | | | water heater over a standard storage-type |
| professional staff provides fast, reliable service. | | | | water heater? |
| Customer service options are available, please call | | | | Tankless water heaters can provide a continuous |
| 1-866-720-2076 or visit | | | | supply of hot water, while a tank will run out of |
| 11) What is the minimum water flow rate required | | | | hot water. Tankless products also have a longer |
| for the tankless water heater to ignite? | | | | life; lower operating costs, precise delivery |
| All Rheem tankless water heaters require a | | | | temperature, and can be installed in many |
| minimum flow rate of .66 GPM to ignite the | | | | locations where a storage water heater may not |
| burner. Too little flow will not activate the main | | | | fit. |
| burner. | | | | 23) How much can I expect to save on my |
| 12) What type of exhaust venting do these | | | | monthly bill if I install a tankless water heater? |
| products require? | | | | Test results have shown that a tankless gas |
| The venting must be Category III, Stainless steel, | | | | water heater costs about 40% less to operate |
| and it applies to the adapter, the vent pipe, all | | | | than an electric water heater, and about 30% less |
| elbows, and terminal vent. This is important | | | | than a natural gas water heater. |
| because the flue gases and by-products of | | | | 24) How much more do they cost to purchase? |
| combustion can cause condensation. Stainless steel | | | | Generally, a tankless water heater will cost about |
| will not deteriorate like type B venting under | | | | 2 to 2-1/2 times as much as a standard water |
| these conditions. The RTG-53X, RTG-74X and | | | | heater to purchase and install. Keep in mind that in |
| GT-199X outdoor models do not require any | | | | addition to lower operating costs, useable square |
| venting materials. Always consult the Use and | | | | footage is gained by choosing tankless! |
| Care Manual provided with the water heater for | | | | |