Rheem Tankless Water Heater manual

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Safety Inf ormation Safety Precautions . . . . . . . 3–6 LP Gas Models . . . . . . . . . . . 5 Installation Instructions Location, Outdoor . . . . . . . . . . 7 Location, Indoor . . . . . . . . . 8, 9 V enting . . . . . . . . . . . . . . 10-15 W ater Connections . . . . . 16-18 Gas Supply . . . . . . . . . . . . . . 19 High Altitude . . . . . . .[...]

Be sure to r ead and understand the entir e Use and Care Manual bef or e attempting to install or operate this water heater . It may sav e y ou time and money . Pay particular attention to the Safety Instructions. Failur e to f ollow these warnings could r esult in serious bodily injury or death. Should y ou ha v e problems understanding the instru[...]

Time/T emperatur e Relationship in Scalds W ater T emperature T ime T o Produce a Serious Burn 120°F (49°C) More than 5 minutes 125°F (52°C) 1 1 / 2 to 2 minutes 130°F (54°C) About 30 seconds 135°F (57°C) About 10 seconds 140°F (60°C) Less than 5 seconds 145°F (63°C) Less than 3 seconds 150°F (66°C) About 1 1 / 2 seconds 155°F (68°C[...]

5 Both LP and natural gas ha ve an odorant added to aid in detecting a gas leak. Some people may not physically be able to smell or r ecognize this odorant. If y ou ar e unsure or unfamiliar with the smell of LP or natural gas, ask the gas supplier . Other conditions, such as “odorant fade”, which causes the odorant to diminish in intensity , c[...]

6 Ha ve the installer show y ou the location of the gas shut-off v alve and how to shut it off if necessary . T urn off the manual shut-off valve if the water heater has been subjected to overheating, f ir e, flood, ph ysical damage or if the gas supply fails to shut off. ● Read this manual entirely bef or e installing or operating the water heat[...]

Installing the (OUTDOOR) water heater: This water heater must be installed in accordance with these instructions, local codes, utility company requir ements and/or in the absence of local codes, use the latest edition of the American National Standard/National Fuel Gas Code. A copy can be purchased fr om either the American Gas Association, 400 Nor[...]

W ARNING: Follow vent manufacturer’ s instruction while installing vent. If requir ed, pro vide additional clearances from v ent to combustibles per v ent manufacturer’ s instruction. ! 8 Installing the (INDOOR) water heater : This water heater must be installed in accordance with these instructions, local codes, utility company requir ements a[...]

Manual Appliance Gas Shut-off V alve W ood Screw x 5pcs. W asher x 4 pcs. Use & Care Manual Tankless Unit FOR YOUR SAFETY! — Do not store or use gasoline or other flammable vapors or liquids or other combustible materials in the vicinity of this or any otherappliance. To do so may result in an explosion orfire. — WHATTO DO IF YOU SMELLGAS ?[...]

10 Installing the (INDOOR) water heater: The water heater must be installed with a 4” diameter UL appro ved Category III Stainless Steel appliance vent pipe and an appr opriate adapter . V enting The installation of venting must comply with national codes, local codes and the vent manufacturer’ s instructions. The water heater must be vented to[...]

V enting Through Closed Spaces If the vent piping passes through a closed space, a minimum clearance of 8” (20 cm) when installed horizontally or 6” (15 cm) when installed v ertically should be maintained between the v ent pipe and combustibles and noncomb ustibles. Be sure to follo w local codes and v ent manufacturer’ s installation instruc[...]

12 D V V E F IX ED C L OS ED O P E R AB LE O P E RA B LE FIXE D CLO S ED v v B L F C B v v v X B B B A J B I H X v M K v G A The following information should be used for determining the proper location of the v ent terminal for indoor and outdoor tankless water heaters. V V V E E N N T T T T E E R R M M I I N N A A L L X A A I I R R S S U U P P P P[...]

Additional Considerations Do NO T install v ent terminal under any patio or deck. T o help prev ent moisture from freezing on walls and under eav es, do not locate vent terminal on the side of a b uilding with prev ailing winter winds. T o help prev ent water lines from freezing, do not locate v ent terminal on the side of a building with pre v ail[...]

Example A: T ypical Horizontal T ermination w/ 1/4” per f oot DO WNW ARD Slope 14 Installing the (INDOOR) water heater: V ent Horizontal W all Thimble Installation An approv ed 4 inch (10 cm) V ent Horizontal W all Thimble must be used. The W all Thimble requires mechanical support from the wall suf ficient to support an y incidental loads on the[...]

V ertical V ent Installation A fire stop plate should be installed at e v ery penetration of a floor or ceiling if the vent is not running in a fire-rated shaft. Maintain the recommended air space clearance to combustible materials and b uilding insulation. Once the vent terminal location has been determined, make a hole through the roof and interi[...]

16 W ater Supply Connections IMPOR T ANT : Do not apply heat to the HO T or COLD water connections. If sweat connections are used, sweat tubing to adapter befor e f itting adapter to the water connections on heater . Any heat applied to the water supply fittings will permanently damage the internal components of the water heater . Mounting the W at[...]

W ater Supply Connections, continued Notice: If the water flo w resistance of a shower head is too high, the b urner in the water heater will fail to ignite. K eep the shower head clean from debris that could cause additional pressure drop. Notice: If using mixing valv es on the outlet, choose one that prev ents cold water pressure from ov ercoming[...]

Relief V alve A new pressur e relief v alve, complying with the Standard for Relief V alves and A utomatic Gas Shut-Off De vices f or Hot W ater 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 gover n the installation of relief v alves. For[...]

This water heater is certif ied for installations up to 3,280 feet (1000 m) abov e sea le vel. The input rating of this water heater is based on sea le vel operation. At higher elev ations, the actual input rate may be lo wer than the value listed on the rating label. NO TICE: Select High Altitude models ar e a vailable. One model is av ailable f o[...]

Remote Control Installation One (1) remote control is provided with the water heater . Additional remote controls may be purchased separately . Up to three (3) remote controls can be used with this water heater . The following are considerations for determining the location of the remote control(s): ● ● DO NO T install any remote control outdoo[...]

21 W ARNING: Field wiring connections and electrical grounding must comply with local codes, or in the absence of local codes, with the latest edition of the National Electrical Code, ANSI/NFP A 70, or in Canada, Canadian Electrical Code, CSA C22.1 Part 1.[...]

Installing the Main Remote Contr ol: Electrical Connection PO WER CORD (Indoor water heaters only): ● The electric power supply requirement for this water heater is 120 V AC/60HZ, 2 Amps. ● The water heater comes with a three (3) pin power supply cord (INDOOR MODELS ONL Y). Use only a power outlet with a ground terminal. ● The installation of[...]

23 Installing the water heater: T ypical Installation of W ater Heater (V enting Required f or Indoor Models Only) T o Hot W ater Faucet(s) Relief V a lve Union Drain V alve 6" (15 cm) Air Gap Manual Gas Appliance Shut-off (supplied) Sediment Tr a p Manual Gas Supply Line Shut-off Va l v e Union Cap Cold W ater Supply Shut-off Va l v e Check V[...]

24 Installing the water heater: For increased ener gy ef ficienc y , use pipe insulation. Please install the insulation according to the diagram abov e, making sure to insulate all the way to the top. Do not cov er any drain or pressure relief v alv e(s). Do’ s ❑ Do follow all installation instructions cov ered in this manual. ❑ Do check inle[...]

A. Outdoor W ater Heater Location ❑ Outdoor water heaters must be installed outdoors. ❑ Protected from freezing temperatures. B. Indoor W ater Heater Location ❑ Close to area of vent termination. ❑ Indoors and protected from freezing temperatures. C. Outdoor and Indoor W ater Heater Location ❑ Proper clearance from combustible surf aces o[...]

26 Lighting the water heater: Bef ore operating this water heater , be sure to read and f ollo w the instructions on the label pictured belo w and all other labels on the water heater , as well as the warnings printed in this manual. F ailure to do so can result in unsafe operation of the water heater , resulting in property damage, personal injury[...]

Time/T emperature Relationship in Scalds W ater T emperature T ime T o Produce a Serious Burn 120°F (49°C) More than 5 minutes 125°F (52°C) 1 1 / 2 to 2 minutes 130°F (54°C) About 30 seconds 135°F (57°C) About 10 seconds 140°F (60°C) Less than 5 seconds 145°F (63°C) Less than 3 seconds 150°F (66°C) About 1 1 / 2 seconds 155°F (68°C)[...]

28 W ater T emperature Setting… Maximum water temperature occurs while the burner is on. T o determine the water temperature, turn on a hot water faucet and place a thermometer in the water stream. W ater temperature at the faucet may v ary depending on season and length of pipe from the water heater . The factory setting of the remote control te[...]

Car e and cleaning of the water heater: Routine Pre v entativ e Maintenance Properly maintained, your water heater will provide years of dependable trouble- free service. It is recommended that a periodic inspection of the burner , relief valve, air intake f ilter , water f ilter and v enting system should be made by service personnel qualified in [...]

CA UTION: Do not operate without the condensate trap connected to the vent and r outed to the proper drain. ! 30 Condensate T rap Inspection On a regular basis, inspect the condensate trap to ensure there is enough water in the trap and the condensate is draining properly . Ensure that condensate is disposed of per local codes and regulations. If t[...]

Draining the W ater Heater W ARNING: Failure to drain the water heater can cause serious damage to the water heater as well as personal injury . Below are instructions for draining w ater out of the water heater . T urn of f the switch on the remote control. Close the gas shut-off v alv e(s). Unplug the power supply cord (or disconnect breaker) at [...]

32 Bef or e Y ou Call For Ser vice… T roubleshooting T ips Sav e time and money! Re vie w the charts on the follo wing pages first and you may not need to call for service. CA UTION: F or y our safety , DO NOT attempt r epair of electrical wiring, gas piping, remote contr ol, bur ners, vent connectors or other safety devices. Refer r epairs to qu[...]

Err or Code Guide: When an error code is displayed: ● Close the hot water faucet, turn of f the switch on the remote control. ● W ait for about 5 minutes before turning the switch on again. ● Open the hot water faucet. If the error code remains in the display: ● Close the hot water faucet and turn of f the switch on the remote control. ● [...]

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Required adjustment f or up to 140°F (60°C) f or Light Duty or 180° (82°C) f or Hea vy Duty water heater temperature settings W ARNING: Refer to scald potential warnings on page 4 before making adjustment. Changing this setting is done at your own risk. DO NO T alter the #4 DIP Switch if the setting of up to 140°F (60°C) is not required. Foll[...]

36 IF Y OU NEED SER VICE 1. Should you hav e an y questions about your new w ater heater , or if it requires adjustment, repair , or routine maintenance, it is suggested that you first contact your installer , plumbing contractor or previously agreed upon service agenc y . In the ev ent the f irm has mov ed, or is unav ailable, refer to the telepho[...]