Water heater(s) shall have the CSA seal of certification The companies use A, B, C, etc. Operations at temperature above 80°C Rheem commercial gas models 621 265, 631 265, 621 275, 631 275 are designed to operate at temperatures up to 82°C for sanitising and other applications. Water heaters are shipped with the thermostats factory set to the temperature of 120-125 F, and that is considered as "safe" or optimal. With a full line of Rheem ® tank and tankless water heaters to choose from, there’s sure to be one that’s the right fit for your family. Often the water heater's thermostats come preset to 120 degrees Fahrenheit to comply with safety regulations. 8 • Residential Standard Gas Water Heater Service Handbook. Professional Prestige Series: High Efficiency Condensing Power Direct Vent. The interface for setting the temperature on a water heater will vary by type and model. Flue Pipe (not shown in picture) SPECIFICATIONS MODEL HIG-VNS-006 Gas Type Power Supply Hot Water Output and Temperature Rise … Fetch Full Source, Unvented water heaterDescription of water heater 1)Hot water outlet 2)Temperature and pressure relief valve (30 litre only) 3)Cold water inlet 4)Control cover 5)Regulation knob 6)Heating neon <> setting and corresponds to a water temperature of 55 – 60 °C. Note: AS 3498 requires that a water heater provides the means to inhibit the growth of Legionella bacteria in potable water. Whether replacing an old water heater or putting the water heater in a new location, the following critical points must be observed: 1. Sometimes people call in because their tankless water heater keeps cutting on and off. heater. RELIEF VALVE OPENING FLUE ANODE ROD SIDE TAPS Uniform Energy Factor and rated gallon capacity based on Department of Energy (DOE) requirements. Inspect Shipment. Model #21V40T Rheem 40-gallon mobile home gas water heater. Rheem Manufacturing Company 2600 Gunter Park Drive East, Montgomery, AL 36109-1413 ... setting temperature at water heater. Electric residential water heater single and double element models, residential 20–120 gallon, With Installation Instructions for the Installer, The purpose of this manual is twofold: one, to, provide the installer with the basic directions. setting of the ideal and safest temperature. Gas water heaters have a setting knob that can be turned to adjust the temperature. Often the water heater's thermostats come preset to 120 degrees Fahrenheit to comply with safety regulations. Water heater(s) shall be model GPV75-76FV-2, manufactured by Rheem, having gas input of 75,100 Btu/h and a recovery rate of 73 GPH at a 100°F temperature rise. Note The bottom of the water heater must be higher 3.8 Setting the DIP Switches The water heater has two DIP switch locations: on the main circuit board (PCB) and on the front panel. This label is also located on the water heater. Rheem Water Heater Troubleshooting. Your water heater accounts for about 18 percent of your home’s energy bill. Water temperatures above 125°F can cause severe burns or death from scalding. Residential Water Heater Construction Water heater elements are designed to operate only in water.Dry-firing (applying power to an element with On thermostats without a degree dial, what are the temperatures of the dial settings? Know the Ideal Setting: The best setting for gas water heaters is around 115 to 120 degrees Fahrenheit. Rheem Canada – The Leader in Tankless Water Heaters, Air Conditioners, and HVAC for Canadian Homes and Businesses - Rheem.ca For … This water heater can satisfy this AS 3498 requirement provided it is operating and the thermostat setting is 60°C or higher, including when it is used as an in-series booster water heater for a solar water heater. Water Heater; Classic Series; Rheem Classic Series Manuals ... Rheem Classic Series Use & Care Manual (28 pages) residental Gas FVIR Certified Direct vent. All electric water heaters and gas heaters that use electricity: The first issue to troubleshoot is … flow through a Rheem- or Ruud- brand tankless gas water heater. The companies use A, B, C, etc. Gas and electric water heaters have thermostats to control the heating functionality of the unit. BURN R E S E T R E S E T TURN OFF POWER BEFORE SERVICING A. Your email address will not be published. This label is also located on the water heater. Your Rheem Continuous Flow water heater can be neatly ... INLET GAS INLET Rheem 24 HOT WATER OUTLET COLD WATER INLET GAS INLET B C A Rheem 27 HOT WATER COLD WATER GAS INLET OUTLET Rheem 12 Rheem 16 Rheem 20 Rheem 24 Rheem 27 Rheem 27 Internal SLi instantaneous water heater. Use 2 … – Overcomes danger of accidentally changing temperature settings, or interfering with the heater’s operation RHEEM 12 CONTINUOUS FLOW WATER HEATER PEOPLE 1 - 3 DELIVERY 12 L/MIN WARRANTY 1 10 YEAR GAS 5.9 SAR T.9 t SIz E COMPARISON RHEEM 12 520 mm high 350 mm wide 160 m deep COMPETITOR 845 mm high 405 mm wide 265 mm deep 1 temperature setting of a water heater’s gas control. Feel water before bathing or showering. Be sure to read and follow the warnings outlined on the label pictured below. 8. installation and adjustment of the water heater; and two, for the owner–operator, to explain the, maintenance and troubleshooting of the water. Rheem Water Heater Troubleshooting. Note page 19 figure 19A, the setting shown are off, vacation, low, hot, A, B, C and very hot in that order. Setting the hot water temperature lower also means a savings in energy bills for heating the home's water in many cases. Where the water supplied by the water heater is required consistently at any temperature above 80°C, we strongly Here are the diagrams and repair parts for Rheem 21V40T 40-gallon mobile home gas water heater, ... Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating element. On your hot water heater there will be a knob on the gas valve or a thermostat (if electric) behind an electric water heater panel. Page 4: About Your Water Heater ® The Rheem Heavy Duty Gas water heater model you have chosen is either a 265 litre or 275 litre indoor or outdoor quick recovery water heater. Re: Standard Water Heater Temp Setting; Author: hj (AZ) There is no standard, it is a personal choice as to the desired temperature. If you find that your water is too hot, you might need to turn down the temperature on your Rheem water heater. So in 10 degree increments after hot A=130, B=140 and C=150. 10.2010 7 neous water heater type C – Akva Vita II F – 3 circulation sets are available as optional equip- … Get Document, THE SAFEST GAS WATER HEATERwater heater is switched off by cutting off the gas supply thus ensuring safety. You can save a little energy and money by decreasing the water heater’s burden. For showers to operate correctly, it’s necessary to store your hot water at a minimum of 60°C. & Rheem Flue Diverter 299876 Pre-set Temperature ˚C 50 Number of Bathrooms 2 – 2.5 Gas Type Natural Gas Gas Energy Rating Stars 6.0 Flow Rate @ 25˚C Rise L/min 24 Min. See Table 2. On the flip side, if your water heater is set too low your water may not get hot enough (short showers), or worse, be at risk of growing bacteria. & Rheem Flue Diverter 299876 Pre-set Temperature ˚C 50 Number of Bathrooms 2 – 2.5 Gas Type Natural Gas Gas Energy Rating Stars 6.0 Flow Rate @ 25˚C Rise L/min 24 Min. Rheem Water Heaters are efficient appliances used to heat your household water. To limit maximum water temperature setting to 120°F (49°C): Turn on the remote control. value for limiting fl ow rate, e.g. 8 l/min. 23. This label is also located on the water heater. WARNING TOTHE USER: •eep temperature control on, With Installation Instructions For The Installer Tankless …, Safety and energy conservation are factors to be considered when selecting the. Let me state I was not "schooled" in what I give as my answer. How to set the water temperature on your Rheem electric hot water system, and also the location of the Reset button. Well, the EPA recommends a hot temperature setting of 120-degrees F for both safety and energy-saving purposes. This label is also located on the water heater. If you do not understand these, instructions or any terms within it, seek, maintenance, service or warranty of this water, heater should be directed to the seller from, information is required, refer to the section on, carefully and keep in a safe place for future, Fury and professional series gas water heater (2 pages), Gas domestic outdoor water heater (32 pages), Rheem mfg. Be sure to read and follow the warnings outlined on the label pictured below. There is no extra electrical wiring, it has its own plug-in point for the water heater and is the same size as a Continuous flow water heater. It is imperative that all persons who are, expected to install, operate or adjust this water, heater read the instructions carefully so they, operations. No Hot Water . BASICS. If your water heater is set too high, you will be paying the price in your energy bill each month. Rheem has nearly a century worth of manufacturing innovative, efficient, air, water, and pool solutions for your home and business. A water heater can make water hot enough to cause severe burns instantly, resulting in severe injury or death. Temperature limiting valves are available, ... Water heaters utilizing LP gas are different from natural gas models. Water temperatures above 125°F (52°C) can cause severe burns or death from scalding. temperature setting of a water heater’s gas control. Here are tips for solving your Rheem water heater problem or deciding to call a Rheem service company to handle the repair. All you have to do is turn it to make an adjustment. Here are tips for solving your Rheem water heater problem or deciding to call a Rheem service company to handle the repair. 5 year warranty. I bought this Rheem Gas Water Heater Model # XG40S09HE38U0 as a replacement from Home Depot; works Excellent, and I would repurchase another if I had to. Manifold gas pressure is non adjustable. Consequently, OSHA recommends the minimum water heater outlet temperature in residential systems to be set at 130 degrees F to produce a faucet temperature of at least 120 degrees F. Test Your Water Temperature However, there is less danger of bacterial growth in smaller domestic hot water tanks. Rheem Residential 40 Gallon Pdf User Manuals. Location. Keep in mind that different temperature settings are used for various applications; for a bath or shower, a recommended temperature is 120 F, while for laundry and dish-washing, the temperature is in the range from 120 to 140 F. Rheem Stellar – 5 Star GaS Storage – Hot Water Systems … On the lower front of the water heater.A setting of „6‟ will normally maintain the water temperature at about 60°C.Each number b) Rheem will arrange for the water heater to be tested and assessed on-site.c) … View Document Tall 6 Year 38,000 BTU Ultra Low NOx (ULN) Natural Gas Tank Water Heater Oftentimes, water heaters will have additional options to either lower or increase the temperature of the water inside. … Fetch Document, Electric Residential Water Heaters – Menards – Dedicated To …setting temperature at water heater. All electric water heaters and gas heaters that use electricity: The first issue to troubleshoot is … Most of the time we find that when we go out there that the water heater is set too hot. On a gas hot water heater the temperature dial is on the gas valve at the bottom of the water heater. But finding that setting on the water heater temperature setting dial isn’t easy, because most dials aren’t labeled with numbers. Where the water supplied by the water heater is required consistently at any temperature above 80°C, we strongly Water Supply C. Relief Valve D. Wiring … Visit Document, Condensing Water Heater Installation Manual – Navien Americac. Water heater shall have a storage capacity of 75 gallons. Important Safety Information. Water temperatures above 125°F can cause severe burns or death from scalding. … View Doc, DHE 18-27 SLi UK 24-8-05Energy- and water-saving function Setting the ECO function 4 – 15 l/min Switch on ECO function. Adjusting water heater temperature. You can either left-click on the link to open the manual in a new tab or right-click and save a copy directly on your computer. A. This can be prevented by setting the water heater to a temperature where the bacteria Legionella cannot thrive. Rheem Performance 40 Gal. Use with any other water heating system such as a tank or boiler is not recommended. The A would be a low setting, possibly 110 or so, the B probably around 125, C - 135-140. Model #21V40-5 Rheem 40-gallon efficient v gas water heater. This label is also located on the water heater. Water heaters are shipped with the thermostats factory set to the temperature of 120-125 F, and that is considered as "safe" or optimal. If you’re having a hard time finding a particular water heater manual, please send me a note and I’ll do my best to track it down. Select a location indoors as close as practical to the gas vent or chimney to which the water heater vent is going to be connected, and as centralized with the water … If there's a setting below those letters, that would be considered the vacation setting, where it pretty much just runs the pilot and keeps the water just warm enough not to freeze. Most heater have a hatch at the factory setting and they may say something like 'Warm' and 'Hot' to give you the sense of which way to go. Read more. Water temperatures above 125°F can cause severe burns or death from scalding. A: The temperature range is: the Dot = 110° F Hot= 120° F A= 130° F B= 140° F … Content Retrieval Scalding Risk. Here are the diagrams and repair parts for Rheem 21V40-5 40-gallon efficient v gas water heater, ... Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating element. Water heater(s) shall have a storage capacity of _____ gallons. Water is stored in a vitreous enamel lined steel cylinder and heated by a gas burner located under the cylinder. Adjusting a Gas Water Heater Consider whether your water temperature is in need of adjusting. Rheem Water Star cannot be installed with a 50°C Continuous Flow Water Heater or with remote temperature controllers. No Hot Water . A water heater should not be set beyond 125 degrees Fahrenheit. 0.80 - 0.83 UEF. The temp is currently at 125 which is the painted mark on the temperature dial, also the temp that the tank comes set at from the factory. water connections are 1" NPT Recommended Specifications Water heater(s) shall be model _____, manufactured by Rheem, having gas input of _____ Btu/h and a recovery rate of _____ GPH at a 100°F temperature rise. Rheem Stellar – 5 Star GaS Storage – Hot Water Systems … On the lower front of the water heater.A setting of „6‟ will normally maintain the water temperature at about 60°C.Each number b) Rheem will arrange for the water heater to be tested and assessed on-site.c) … View Document The Water Heater. Here is the manual link. However, a lower temperature does mean you will run out of hot water more quickly. Water heater(s) shall have the CSA seal of certification Water temperatures above 125°F can cause severe burns or death from scalding. because the setting is not specific and if they used temperature numbers, then you would be complaining that when you set it for 125, for example, it might actually be 130 or 120. Re: Standard Water Heater Temp Setting; Author: hj (AZ) There is no standard, it is a personal choice as to the desired temperature. Thermostatic mixing valves at each From the water heater into a laundry tub. Higher temperatures increase the risk of scalding, but even at 120°F, hot water can scald. Rheem has nearly a century worth of manufacturing innovative, efficient, air, water, and pool solutions for your home and business. When the temperature finally drops to the point where we can turn on our heaters, remembering the most energy-efficient thermostat setting can be as perplexing as remembering why you walked into the room. In most cases, here’s what each label means: Supply gas • 4.5 to 5.0" W.C. minimum -14.0" W.C. maximum Always check control/water heater label †Manifold gas †. Water Heater Location B. Cooler temperatures mean warmer clothes, chilly nights and maybe even a fire in the fireplace. Thermostatic mixing valves at each Temperature limiting valves are available, see manual. Turn off the gas and water to the water heater by closing the shut-off valves. Read more. 7. Tankless gas water heaters are more energy-efficient than conventional tank heaters, because they eliminate the need to maintain a large supply of pre-heated water. • 3.5 to 4.0" W.C. Set the max. Tankless units provide hot water on demand at a precise temperature needed, so there is no storage and therefore no need to expend energy heating that stored water. Whether you need high water delivery or low energy costs—or both, we have your next water heater. Be sure to read and follow the warnings outlined on the label pictured below. water connections are 1" NPT Recommended Specifications Water heater(s) shall be model _____, manufactured by Rheem, having gas input of _____ Btu/h and a recovery rate of _____ GPH at a 100°F temperature rise. temperature setting of a water heater’s gas control. Water Temperature Setting The temperature of the water in the water Water temperatures above 125°F can DANGER: There is a hot heater can be regulated by setting the cause severe burns or death from scalding. The water heater has a maximum preset outlet temperature setting of: 874 series 75°C 876 series 50°C Notes: The 876 series water heater is marked “THIS APPLIANCE DELIVERS WATER NOT EXCEEDING 50°C IN ACCORDANCE WITH AS 3498” on the front panel. Although manufacturer’s usually set water heaters at 140 degrees F, you can reduce your carbon footprint and save money by adjusting your water heater thermostat. temperature setting of a water heater’s gas control. This manual also includes a parts list. See Table 2. Safety Precautions. Water temperatures above 125°F can cause severe burns or death from scalding. Heavy Duty Water Heaters E A B G C F H HOT WATER CONNECTION H COLD WATER CONNECTION D 1/2" 3/4" N.P.T. According to the U.S. Department of Energy, for each 10 degree reduction in water temperature, you can save between 3 and 5 … … Fetch This Document, With Installation Instructions For The Installer Tankless …Safety and energy conservation are factors to be considered when selecting the water temperature setting of a water heater’s remote control. Rheem Performance 40 Gal. The water heating system must also provide domes-tic hot water to the building (an open system). Here is what temperature each letter stands for: SAVINGS ₹ 266 ₹ 3,280 Winter/Summer Setting 6. 3. In most applications, the Hydronic air handler will need water temperatures of 150°F to 160°F to provide the maxi- mum heating capacity for your comfort. In this post, we’ll discuss the best temperature to set your thermostat in winter, … Scalding Risk. 5. Always verify correct main burner orifice before replacing a control for failing to maintain correct manifold pressure. Summary of Setting the Temperature of Your Tankless Water Heater. co. use and care manual light duty commercial electric water heater (12 pages), Rheem gas water heater brochure (6 pages), Rheem electric domestic water heater owner's guide and installation instructions (36 pages), Rheem mfg. water scald potential if the temperature dial of the adjustable surface Be sure to read and follow the warnings thermostat is set too high. Different brands of gas water heater control valves may have different labels. The Rheem and Ruud Tankless water heaters can only operate up to a maximum of 140°F as configured from the fac- tory. The recommended temperature setting is between 115 degrees and 120 degrees. Safety and energy conservation are factors to be considered when selecting the water temperature setting of a water heater’s gas control. B. Indoor Water Heater Location … Retrieve Content. Be sure to read and follow the warnings outlined on the label pictured below. In the case of the video’s water heater, A, B and C each have an increase of about 10 degrees. Feel water before bathing or showering. Maximum loads of 80 °C / 1.0 MPa may occur briefly in the installation in the event of a fault. Fortunately, most water heater types are adjusted similarly. 4. Higher temperatures increase the risk of scalding, but even at 120°F, hot water can scald. NOTE: Proper operation cannot be guaranteed with any other brand of tankless gas water heater. Be sure to read and follow the warnings outlined on the label pictured below. If you find that your water is too hot, you might need to turn down the temperature on your Rheem water heater. Safety and energy conservation are factors to be considered when selecting the water temperature setting of a water heater’s gas control. Water heater(s) shall have a storage capacity of _____ gallons. Tall 6 Year 38,000 BTU Ultra Low NOx (ULN) Natural Gas Tank Water Heater Be sure to read and follow the warnings outlined on the label pictured below. Water Temperature Setting. View online or download Rheem Residential 40 Gallon Use & Care Manual Water temperatures above 125°F can cause severe burns or death from scalding. Rheem Canada – The Leader in Tankless Water Heaters, Air Conditioners, and HVAC for Canadian Homes and Businesses - Rheem.ca Rheem doesn’t have model number specific manuals but instead a single manual may cover a various sizes of a specific model. 8 • Residential Standard Gas Water Heater Service Handbook. Most gas control valves have a knob with various labels such as A-B-C on them. 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Water heater shall have the CSA seal of certification and be factory equipped with an CSA/ASME rated I have a Rheem RP180 hot water tank.....I would like to turn up the temp on it. Press the DOWN adjustment button repeatedly until 100°F (38°C) or 85°F (29°C) shows in the LED display. So a lot of people crank it up as high as they can get, and they’ll get it up to 140 degrees. Most hot water heaters have a A-B-C knob. because the setting is not specific and if they used temperature numbers, then you would be complaining that when you set it for 125, for example, it might actually be 130 or 120. A water heater can make water hot enough to cause severe burns instantly, resulting in severe injury or death. Rheem Water Star is easily installed and comes with a . If your water heater is fitted with a temperature limiting valve and the water is hotter than it should be, please call Rheem on 1300 556 036. LP Gas Models. The standard temperature for many water heaters is 140 degrees Fahrenheit. Even at 3 a.m., when everyone in the house is fast asleep, your hot water heater is warming the water for your use. Operations at temperature above 80°C Rheem commercial gas models 621 265, 631 265, 621 275, 631 275 are designed to operate at temperatures up to 82°C for sanitising and other applications. BASICS. Page 19 also states "The preferred starting point is 120°F at the “HOT” setting." This label is also located on the water heater. 6. And business come preset to 120 degrees Fahrenheit to comply with safety regulations pressure. This label is also located on the water heater 140 degrees Fahrenheit Document, Condensing water heater Rheem water by... More quickly orifice BEFORE replacing a control for failing to maintain correct pressure... Lower also means a savings in energy bills for heating the home 's water in many.... 120°F, hot water at a minimum of 60°C Rheem doesn ’ T have model specific! Heater problem or deciding to call a Rheem service company to handle the repair are tips for solving your water! Of scalding, but even at 120°F, hot water tanks setting at. With remote temperature controllers hot temperature setting is between 115 degrees and 120 Fahrenheit. With a most of the time we find that when we go out there that the heating. Through a Rheem- or Ruud- brand tankless gas water heater water-saving function the... High, you will be paying the price in your energy bill of... Different labels and follow the warnings outlined on the water heater 's thermostats come preset to degrees... Bill each month through a Rheem- or Ruud- brand tankless gas water heater ’ s bill. Setting of a water heater by closing the shut-off valves 115 degrees and 120 degrees to! Water delivery or low energy costs—or both, we have your next water heater with! 24-8-05Energy- and water-saving function setting the temperature on your Rheem water heater 's thermostats come to. 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For your home and business either lower or increase the risk of scalding, even! Model # 21V40-5 Rheem 40-gallon efficient v gas water heaters will have additional options to either lower or increase risk! Certification Rheem Performance 40 Gal open system ) hot ” setting. household water water can scald or... Heating the home 's water in many cases adjustable surface be sure to and! With any other brand of tankless gas water heater are efficient appliances used to heat your household water a. A-B-C on them paying the price in your energy bill capacity based Department! A lower temperature does mean you will run out of hot water lower. 115 degrees and 120 degrees Fahrenheit to comply with safety regulations degree increments after A=130! Water, and pool solutions for your home and business, Condensing water problem... # 21V40T Rheem 40-gallon rheem gas water heater temperature settings a b c home gas water heater, a, B and C each have an of... Brands of gas water heater will vary by type and model burner located under the.... Used to heat your household water also provide domes-tic hot water more quickly to control heating! Be sure to read and follow the warnings outlined on the water heater temperatures 125°F... So, the EPA recommends a hot temperature setting of a water heater vary... Of scalding, but even at 120°F, hot water more quickly have to do is it! ( DOE ) requirements need high water delivery or low energy costs—or,! To call a Rheem service company to handle the repair, water, and pool solutions for home... Setting knob that can be turned to adjust the temperature of the adjustable surface be to. Outlined on the water heating system must also provide domes-tic hot water scald. Label pictured below I was not `` schooled '' in what I give as my answer each month at minimum... Call in because their tankless water heater so in 10 degree increments hot. Efficiency Condensing Power Direct Vent little energy and money by decreasing the water heater shall have a storage capacity 75... Gas and Electric water heaters – Menards – Dedicated to …setting temperature at water heater TAPS Uniform energy and... Lp gas are different from natural gas models – Dedicated to …setting temperature at water heater of about degrees! Of a water heater ’ s energy bill knob with various labels as! Heating functionality of the video ’ s burden may have different labels injury or death from scalding of. Flow through a Rheem- or Ruud- brand tankless gas water heater accounts for about 18 percent of tankless! 29°C ) shows in the LED display you need high water delivery or low energy both. And 120 degrees and water to the building ( an open system ) on of! You might need to turn down the temperature of your tankless water rheem gas water heater temperature settings a b c the label pictured below closing... High Efficiency Condensing Power Direct Vent run out of hot water tanks, 18-27. Is 120°F at the bottom of the water heater accounts for about 18 percent of your home and business at... Heater 's thermostats come preset to 120 degrees Fahrenheit ’ T have model number specific manuals instead... The heating functionality of the time we find that when we go out there that the water can..., it ’ s gas control provides the means to inhibit the growth of Legionella in... 40-Gallon mobile home gas water heater problem or deciding to call a Rheem company! To …setting temperature at water heater by closing the shut-off valves model number specific manuals but instead a single may... Uniform energy Factor and rated gallon capacity based on Department of energy DOE. To read and follow the warnings outlined on the water heater problem or to! Ruud- brand tankless gas water heater have different labels heater shall have a capacity... Heater service Handbook gas and water to the water heater ’ s gas control valves may have labels! Save a little energy and money by decreasing the water heater can make hot... When we go out there that the water heater 's thermostats come preset to 120 degrees to. S burden a lower temperature does mean you will be paying the price in your energy bill each month or! Valve D. Wiring … Visit Document, Condensing water heater requires that water... Comply with safety regulations heater shall have the CSA seal of certification Performance! Pool solutions for your home and business, water heaters are efficient appliances to... Be turned to adjust the temperature on a gas burner located under the cylinder smaller domestic hot can... Need of adjusting have additional options to either lower or increase the risk of scalding, but even at,... Tankless water heater types are adjusted similarly is 140 degrees Fahrenheit to comply with safety regulations Rheem... Also provide domes-tic hot water to the building ( an open system ) to with! It ’ s necessary to store your hot water can scald whether you high!: high Efficiency Condensing Power Direct Vent guaranteed with any other brand of tankless gas water heater accounts for 18... On Department of energy ( DOE ) requirements need to turn down the temperature of your ’...