Rheem RTGH-84DVLN-2 Use And Care Manual Download Page 1

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95% CONDENSING

TANKLESS

WATER HEATER

AP18161-1 (11/16)

Do not destroy manual. Please read

carefully and keep in a safe place

for future reference.

CERTIFIED

WARNING:

This water heater is not suitable

for use in manufactured (mobile)

homes.

WARNING:

If the information in these

instructions is not followed

exactly, a fire or explosion may

result, causing death, personal

injury, or property damage.

For Your Safety!

• Do not store or use gasoline

or other flammable vapors and

liquids in the vicinity of this or

any other appliance. To do so

may result in an explosion or

fire.

• Installation and service must

be performed by a qualified

installer, service agency, or the

gas supplier.

What to Do If

You Smell Gas

• Do not try to light any

appliance.

• Do not touch any electrical

switch; do not use any

phone in your building.

• Immediately call your gas

supplier from a neighbor’s

phone. Follow the gas supplier’s

instructions.

• If you cannot reach your

gas supplier, call the fire

department.

• Do not return to your home until

authorized by the gas supplier

or fire department.

DESIGN

CERTIFIED

USE AND CARE MANUAL

With Installation Instructions

for the Installer

Condensing Direct Vent and Outdoor

199,900 Btu/hr, 180,000 Btu/hr and

157,000 Btu/hr Models

Summary of Contents for RTGH-84DVLN-2

Page 1: ...pliance To do so may result in an explosion or fire Installation and service must be performed by a qualified installer service agency or the gas supplier What to Do If You Smell Gas Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you canno...

Page 2: ...ze this symbol as an indication of Important Safety Information This symbol alerts you to potential hazards that can kill or hurt you and others All safety messages will follow the safety alert symbol and either the word DANGER WARNING CAUTION or NOTICE These words mean IMPORTANT SAFETY INFORMATION WARNINGS This water heater is not approved for use in manufactured mobile homes Improper installatio...

Page 3: ... extremely dangerous DO NOT handle use or store gasoline or other flammable or combustible materials anywhere in the vicinity of a water heater or any other appliance Be sure to read and follow the labels on the water heater as well as the warnings printed in this manual Failure to do so can result in death bodily injury or property damage Combustible construction refers to adjacent walls and ceil...

Page 4: ...entive Maintenance can harm the proper operation of this water heater which can cause carbon monoxide dangers excessive hot water temperatures and other potentially hazardous conditions WARNINGS IMPORTANT DO NOT apply heat to the HOT or COLD water connections If sweat connections are used sweat tubing to adapter before fitting adapter to the water connections on heater Any heat applied to the wate...

Page 5: ...heater is not certified for any other fuel type Both natural gas and propane LP have an odorant added to aid in detecting a gas leak Some people may not physically be able to smell or recognize this odorant If you are unsure or unfamiliar with the smell of natural gas or LP ask the gas supplier Other conditions such as odorant fade which causes the odorant to diminish in intensity can also hide or...

Page 6: ...n this label 2 Turn off all electric power to the appliance 3 Do not attempt to light the burner by hand 4 Turn the Gas Shutoff Valve located on the outside of the unit clockwise to the OFF position 5 Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow B in the safety information above on this label If you don t smell gas go to the next step 6 Turn the Gas Shutoff Valve loca...

Page 7: ...ormed only by qualified service personnel Make certain the power to the water heater is OFF before removing the unit cover panel Exposed electrical components and moving parts can cause personal injuries For your safety DO NOT attempt repair of electrical wiring gas piping remote control burners vent connectors or other safety devices Refer repairs to qualified service personnel Safety California ...

Page 8: ...stallation instructions DO NOT attempt to repair or replace any part of your water heater unless it is specifically recommended in this manual All other servicing should be referred to a qualified service technician PRODUCT INFORMATION For Your Records Write down and save the following product information along with the original sales slip and or cancelled check The model and serial numbers can be...

Page 9: ...3 4 248 mm 21 4 59 mm 51 2 140 mm 61 8 156 mm 21 8 54 mm 37 8 98 mm 27 8 73 mm 41 8 105 mm 91 2 241 mm 11 2 38 mm Specifications Direct Vent Models 177 8 454 mm 185 8 473 mm 275 8 702 mm 93 4 248 mm 21 4 59 mm 51 2 140 mm 61 8 156 mm 21 8 54 mm 37 8 98 mm 27 8 73 mm 41 8 105 mm 91 2 241 mm 11 2 38 mm Specifications Outdoor Models ...

Page 10: ...ter A Model Number B Serial Number C Data Bar Code D Heater Type E Installation Type F Type of Gas G Max Inlet Gas Pressure H Min Inlet Gas Pressure J Recovery Rating K Max BTU Input Rating L Min BTU Input Rating M Manifold Gas Pressure N Certification Stamp P Alternate Approval Stamp Q Clearances English Rating Label English French Rating Label ...

Page 11: ...wer Switch To Hot Water Faucet s Drain Valve Water Filter Cold Water Supply Shut Off Valve Note A flexible drain tube can be used To Suitable Drain To Suitable Drain Power Supply Cord Union Union Manual Gas Supply Line Shut Off Valve Manual Gas Shut Off Valve Supplied Condensate Pipe Cap Sediment Trap Service Valve Relief Valve Relief Valve ...

Page 12: ...rd Union Union Manual Gas Supply Line Shut Off Valve Manual Gas Shut Off Valve Supplied Condensate Pipe Cap Sediment Trap Service Valve Relief Valve Relief Valve Hard Wire Water Filter Flue Terminal This water heater is for OUTDOOR installation only DANGER DO NOT install this water heater indoors or in a confined space It is designed for outdoor installation only Any other type of installation wil...

Page 13: ...ly or death from scalds Children disabled and elderly are at highest risk of being scalded See instruction manual before setting temperature at water heater Feel water before bathing or showering Temperature limiting valves are available see manual BURN Time Temperature Relationship in Scalds Water Temperature Time to Produce a Serious Burn 120 F 49 C More than 5 minutes 125 F 52 C 1 1 2 to 2 minu...

Page 14: ...heater may not operate with a small water flow Increase the water flow and recheck If it still does not operate with the hot water faucet completely open increase the temperature setting on the remote control Water Heater Facts DANGER Water temperatures above 125 F 52 C will result in death and or severe burns from scalding The hottest temperature water will be at the faucet closest to the water h...

Page 15: ... Condensate is known to be acidic refer to federal state provincial and local codes for proper handling and discharge methods DO NOT operate without the condensate collector drain connected and routed to a proper drain that can handle corrosive condensate This could cause the system to malfunction or fail On a regular basis inspect the condensate drain line to ensure the condensate is draining pro...

Page 16: ... the unit cover panel Turn on a hot water faucet While the water heater is operating inspect the main burner flames through the burner sight glass The flames should be blue when the main burner is firing NOTICE If the flames are not blue or you observe unusual burner operation shut off the water heater and contact a qualified service technician Turn off the hot water faucet and reinstall the unit ...

Page 17: ...ical power supply disconnected Vacuum around the water heater to remove any dust dirt and or lint buildup Clean the water heater and the remote control with a damp soft cloth and mild detergent Gently wipe and completely dry all surfaces Check the air intake and vent outlet for blockage and or debris NOTICE The air intake requires a minimum of 12 in 30 cm of clearance between the air intake openin...

Page 18: ... out of the line Clean the water filter under running water To remove severe sediment and dirt use a soft brush CAUTION DO NOT overtighten the water filter Overtightening can deform and or damage the filter Replace the filter in the cold water inlet line and tighten until it is snug Turn on the water supply reconnect the electrical supply and turn on the water heater 4 7 5 6 Care and Cleaning cont...

Page 19: ...he pressure relief valve on the hot water heater discharges periodically this may indicate a problem in the water system Contact the water supplier or a plumbing contractor to correct the problem DO NOT plug the relief valve outlet Inspect and keep the area around the water heater clear and free of flammable materials such as gasoline and other flammable vapors and liquids Visually inspect the wat...

Page 20: ...ll hot water faucets Run the water until it is COLD then shut off the faucet Close the water shut off valve Using a suitable container to catch the water remove the water drain plug located at bottom of the water heater the water drain valve from the base of the hot water outlet line and the water filter from the base of the cold water inlet line Connect a garden hose to the drain valve in the hot...

Page 21: ...s thawed To put the water heater back in service Disconnect drain hose Make sure the drain valve is closed Reinstall the water filter in the base of the cold water inlet line the water drain valve and the water drain plug Open the water shut off valve Open all hot water faucets and let run until all air has been purged from the lines Close all hot water faucets Plug in the power cord or reconnect ...

Page 22: ... heater down to an ambient temperature of approximately 30 F 34 C These temperatures are all based on temperatures without wind The heater only protects the internal components of the water heater NOTICE Unplugging or disconnecting the power supply to the water heater will also disconnect the power to the freeze protection electric heater External piping and valves require additional freeze protec...

Page 23: ...on Not enough or no hot water 1 Unit is not ON 1 Turn on the unit by pressing the POWER ON OFF button 2 Water shut off valve is not completely opened 2 Check shut off valve and open com pletely 3 Hot water faucet is not completely opened 3 Open hot water faucet completely The main burner goes off when incoming water volume is inadequate 4 Water piping is frozen 4 Allow piping to thaw 5 Electrical ...

Page 24: ...ng size 4 Bleed over in one of the hot water fixtures 4 Contact a dealer or a qualified service technician Water too hot 1 Temperature is set too high 1 Decrease the temperature setting at the remote control 2 Water shut off valve is not completely opened 2 Check and completely open the water shut off valve 3 Small amount of water has been heated 3 Increase the hot water flow at the faucet to allo...

Page 25: ...r repairs to a qualified service technician When an error code is displayed Turn off all the hot water faucets Turn off the water heater by pressing the POWER ON OFF button on the remote control Wait about 5 minutes then restart the water heater by pressing the POWER ON OFF button Turn on a hot water faucet and recheck the remote control display If the error code remains in the display 1 Turn off ...

Page 26: ... technician 93 The neutralizer must be replaced The unit cannot be used until the neutralizer is replaced Contact a dealer or qualified service technician P1 Not enough water flow to operate the unit Increase the water flow from the fixtures 88 Reminder of flushing the heat exchanger and or replacing the water treatment filter Contact a dealer or qualified service techni cian Service Error Code Ch...

Page 27: ...INSTALLATION INSTRUCTIONS FOR THE CONTRACTOR 27 Installation ...

Page 28: ...m where they are used or stored The open flame of the water heater s main burner can ignite these vapors causing an explosion or fire NOTICE Elevating a gas fired water heater will reduce but NOT eliminate the possibility of lighting the vapor of flammable liquids which may be improperly stored or accidentally spilled NOTICE DO NOT connect power until venting installation is complete see Venting i...

Page 29: ... 0 cm for rear with support bracket s 12 in 30 cm from the bottom top and front 0 in 0 cm for vent or air intake pipe NOTICE Preferred maintenance clearance is 24 in 61 cm from top bottom and front of unit 12 min 300 mm 12 min 300 mm 1 2 min 13 mm 12 min 300 mm 0 0 mm 0 min 0 mm Sealing Plate DO NOT install the water heater in areas prohibited by National Fuel Gas Code in U S installation or CAN C...

Page 30: ...following locations beauty shops dry cleaning establishments photo processing labs and storage areas for liquid and powdered bleaches or swimming pool chemicals These locations often contain such halogenated hydrocarbons The air supply containing halogenated hydrocarbons is safe to breathe but when passed through a gas flame corrosive elements are released that will shorten the life of any gas bur...

Page 31: ...Water Filter Cold Water Supply Shut Off Valve Power Supply Cord Union Union Union Manual Gas Supply Line Shut Off Valve Upward Slope to outside termination Manual Gas Shut Off Valve Supplied Cap Sediment Trap Outside Wall 90 Elbow Relief Valve Note A flexible drain tube can be used To Suitable Drain To Suitable Drain Condensate Drain Air Intake Pipe Exhaust Vent Pipe To Suitable Drain Condensate D...

Page 32: ...ld Water Supply Shut Off Valve Hard Wire not supplied Union Manual Gas Supply Line Shut Off Valve Flue Terminal Cap Sediment Trap Manual Gas Shut Off Valve Supplied Water Filter Union Union Service Valve Service Valve Relief Valve Relief Valve Condensate Drain WARNING DO NOT install this water heater indoors or in a confined space It is designed for outdoor installation only Any other type of inst...

Page 33: ...be installed inside or outside of the wall Use wood screws to secure brackets to wall If mounting to a concrete wall use lag bolts designed for concrete Make sure the proper electrical outlet or supply 120 VAC 60 Hz is available and located near the unit Direct vent models come with a 6 ft 1 8 m power cord while the outdoor models require hard wiring or the addition of a plug Position the upper mo...

Page 34: ...enting materials for product installed in Canada must meet ULC S636 The use of cellular core PVC ASTM F891 cellular core CPVC or Radel polyphenolsulfone in non metallic venting systems is prohibited and that covering non metallic vent pipe and fittings with thermal insulation is prohibited Acceptable materials or equivalent InnoFlue PP PVC Schedule 40 ASTM D 1785 CPVC Schedule 40 ASTM F 441 ABS Sc...

Page 35: ...system must be performed prior to any installation work Verify that the correct materials vent lengths and terminal locations as described in this manual have been met Carefully inspect the entire venting and air intake system for any signs of cracks or fractures particularly at the joints between elbows or other fittings and the straight runs of vent pipe Check the system for signs of sagging or ...

Page 36: ...nce with the above provisions shall comply with NFPA 720 and be ANSI UL 2034 listed and IAS certified 3 SIGNAGE A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight 8 feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment The sign shall read i...

Page 37: ...ontal Vent Terminal Location Venting Outside Walls Fixed Closed Fixed Closed Operable Operable V V V V V V X X V V Inside Wall Vent Terminal Air Supply Inlet Area Where Terminal is Not Permitted B B A J I B M M F C K H V V D E B L G A X ...

Page 38: ...han 10 000 Btuh 3 kW and less than or equal to 50 000 Btuh 15 kW 12 in 30 cm for water heaters greater than 50 000 Btuh 15 kW 3 6 in 15 cm for water heaters less than or equal to 10 000 Btuh 3 kW 12 in 30 cm for water heaters greater than 10 000 Btuh 3 kW and less than or equal to 100 000 Btuh 30 kW 36 in 91 cm for water heaters greater than 100 000 Btuh 30 kW K Clearance to mechanical air supply ...

Page 39: ...llation DO NOT terminate vent directly on brick or masonry surfaces Use rust resistant sheet metal backing plate behind the vent The vent for this appliance shall not terminate Over public walkways or Near soffit vents or crawl space vents or other area where condensate or vapor could create a nuisance or hazard or cause property damage or Where condensate or vapor could cause damage or could be d...

Page 40: ...asses through an unheated space Cleaner Primer and Medium Body Solvent Cement All joints in vent piping must be properly sealed and we recommend using the following material PVC materials should use ASTM D 2564 grade cement CPVC materials should use ASTM F 493 grade cement ABS materials should use ASTM D 2235 grade cement ABS is not allowed for exhaust vent in Canada Cementing Joints 1 Cut pipe en...

Page 41: ...a coupling to prevent the pipe from being pushed back into the structure The standard horizontal exhaust outlet termination is a 2 inch or 3 inch pipe which terminates 12 inches from the air intake termination Insert a small length of vent pipe through the wall and connect the coupling Connect vent cap or terminal to the vent pipe on the exterior of the building 1 Observe minimum clearances Vent t...

Page 42: ...age 26 Call for Assistance for the telephone number to speak to a Customer Service Representative Optional vent diagram no kit required Exhaust Vent Pipe Air Intake Pipe Inspection Access Panel Optional Inspection Access Panel Optional Ceiling 1 from wall is recommended To Suitable Drain Condensate Drain Upward Slope to Termination Condensate Trap Flat Termination Kit Air Intake Vent Exhaust Vent ...

Page 43: ...es another means of support from a second location Determine the vent terminal height and install the vent pipe accordingly Refer to Vertical Vent Terminal Location on page 44 for clearance requirements Install adequate flashing where the vent pipe passes through the roof Air Intake Condensate Trap For vertical terminations or where the air intake pipe slopes down towards the water heater it is re...

Page 44: ...ft 1 2 m D Required vent clearance from any forced air inlet including dryer and furnace air inlets 10 ft 3 m 6 ft 1 8 m E Minimum maximum horizontal dis tance between vent terminals 5 5 in 14 cm 24 in 61 cm 5 5 in 14 cm 24 in 61 cm 1 In accordance with current ANSI Z223 1 NFPA 54 National Fuel Gas Code 2 In accordance with current CAN CSA B149 1 Installation Codes The vertical intake air terminat...

Page 45: ...ard Slope Support Hanger Air Intake Pipe Exhaust Vent Pipe Note Condensate trap should be installed as close as practical to the water heater Condensate Drain Optional Condensate Trap To Suitable Drain A similar condensate trap is allowed as long as it prevents rain condensate or any other liquid from entering into the water heater ...

Page 46: ...should the exhaust pipe and the air intake pipe be connected together Venting Support Hanger Adjustable Roof Flashing Support Clamp Upward Slope Air Intake Pipe Exhaust Vent Pipe Minimum Clearance 18 inches above roof Concentric Vent Termination Condensate Drain Condensate Trap Note Condensate trap should be installed as close as practical to the water heater To Suitable Drain A similar condensate...

Page 47: ...tions in the table below If you nonetheless install this water heater where the water conditions are not within the levels specified in the table below Rheem recommends that you take the following steps Install a water treatment device or water softener at the same time as the original installation of the water heater Rheem offers a water treatment accessory that can be installed with the water he...

Page 48: ...hould be set to ensure a minimum system pressure of 40 psi 276 kPa The pressure should remain constant and stable during the operation of the water heater Gravity water pressure is not recommended When the water is supplied from a water supply tank the height of the tank the diameter of the supply pipes and their relation to water pressure need to be taken into consideration Thermal Expansion Dete...

Page 49: ... supply line and connect it to the water inlet on the water heater Open the shut off valve in the COLD water Inlet line to check the water flow through the water heater Close the shut off valve and remove clean and replace the water filter NOTICES Be sure to connect the COLD water inlet and the HOT water outlet as shown on the water heater If reversed the water heater will not function The flow ra...

Page 50: ...ual or exceed the BTUH input of the water heater See the rating plate on the water heater No valve of any type should be installed between the relief valve and the water heater Discharge from the relief valve should be piped to a suitable drain Piping used should be of a type approved for the distribution of hot water HOT and COLD water lines should be insulated up to the water heater See page 51 ...

Page 51: ...alve Water Outlet Water Outlet Water Inlet Water Inlet Drain Drain Condensate Drainage Be sure the condensate runs freely to a drain and does not accumulate inside the water heater In cold climates precautions may need to be taken to ensure that the condensate drain does not freeze All condensation must be drained and disposed of per local codes and requirements If the condensate drain gets blocke...

Page 52: ... Failure to ensure the gas system meter regulators and piping are properly sized could result in improper operation of this or other gas appliances Insufficient gas pressure supply can cause pilot outages lockouts or operating conditions that could lead to an appliance failure improper combustion carbon monoxide sooting or fire Gas line sizing is based on gas type the pressure drop in the system t...

Page 53: ...er to Table s 2 3 or 4 and find the number closest to but higher than the total cubic feet per hour requirement calculation This will tell you the minimum size that the trunk line must be Each branch line must be sized to carry the load of the appliance s attached to it If more than one appliance is on a branch total the BTU and as with the trunk line divide that by the heating value of the fuel R...

Page 54: ...12 Table 6 2 c Table 3 Pipe Sizing Natural Gas Schedule 40 Metallic Pipe Black Iron Inlet System Pressure Less than 2 PSI 55 inches W C Allowable Pressure Drop 0 5 inches W C Specific Gravity 0 60 Capacity in cubic feet per hour Length Pipe Size Inches 1 1 1 10 172 360 678 1390 2090 20 118 247 466 957 1430 30 95 199 374 768 1150 40 81 170 320 657 985 50 72 151 284 583 873 60 65 137 257 528 791 70 ...

Page 55: ...e to the end of the gas supply line Using the proper size piping fittings and components build the gas supply line to the water heater NOTICE The gas supply line should be a minimum of 3 4 in 1 9 cm black steel pipe or other approved gas piping material Install a sediment trap at the lowest portion of the gas line The inlet gas pressure to the water heater must NOT exceed 10 5 in w c 2 6 kPa for n...

Page 56: ...d Contact a qualified service technician Pressure Testing the Gas Supply System WARNING If inlet gas pressure is out of allowable range 4 0 w c 1 0kPa 10 5 w c 2 6kPa for Natural Gas or 8 0 w c 2 0kPa 13 0 w c 3 2kPa for LP gas a gas pressure regulator must be installed to maintain the allowable inlet gas pressure The water heater and its manual gas shut off valve must be disconnected from the gas...

Page 57: ...te power outlet with a ground terminal Keep any excess length of the power supply cord on the outside of the water heater If local codes require hard wiring see instructions for Hard Wiring the Electrical Connections below Hard Wiring the Electrical Connections Wiring should be performed by a qualified electrician in accordance with local codes The water heater requires a properly grounded 120 VAC...

Page 58: ...58 INSTALLATION INSTRUCTIONS Wiring Diagram Electrical ...

Page 59: ...any remote control outdoors or where it can come in contact with water Avoid installing the remote control in the following areas and or conditions area exposed to heat area exposed to steam area exposed to oil area exposed to direct sunlight areas near stored or used flammable products Place remote control out of children s reach The remote control should be installed in a convenient location e g...

Page 60: ...ote control cable between the location of the remote control and the water heater Remove the remote control from the base plate Feed the remote control cable through the large center hole in the base plate Install the base plate to the wall using suitable screws and wall anchors NOTICE The tabs on the base plate should always point out Connect the remote control to the remote control cable Positio...

Page 61: ...on cables from the remote control to the remote control connection terminals NOTICE The remote control wire connection terminals are not polarity sensitive Firmly tighten the terminal screws by hand Secure the remote control extension cable on the hook located on the side of the remote control connection base Reinstall the remote control connection cover and secure with the one screw NOTICE DO NOT...

Page 62: ...ered in this manual Check the inlet gas pressure to make sure it is within the range specified on the rating plate Make sure there is adequate air for combustion and ventilation as described on pages 37 38 or page 44 in this manual Maintain proper clearances to combustibles and noncombustibles as specified on the rating plate Make sure the venting system complies with local codes National Fuel Gas...

Page 63: ...nt and airtight All vent runs are properly installed Vent terminal is properly installed Maximum vent length is observed Water supply has sufficient pressure Air has been purged from the water heater and the piping Water connections tight and free from leaks Water filter is clean and in place All piping has been assembled as described on pages 48 and 49 Water pipes are insulated and protected from...

Page 64: ...ot water needs and hot water for space heating purposes DO NOT connect the heater to an existing heating unit or components of a heating system that have previously been used with a nondrinking water system Toxic chemicals such as those used for boiler treatment may be present and will contaminate the drinking water supply causing possible health risks Never introduce toxic chemicals such as glyco...

Page 65: ... heater installations The maximum temperature setting is 140 F 60 C in recirculation control Pump Requirements Voltage 120V 60Hz In rush current Less than 2 5 amps Amperage less than 2 0 amps WARNING A control board can be damaged if amperage exceeds 2 0 amps Pump Size The pump should be sized for about 2 5 gpm at the pressure drop through the tankless water heater and the supply and return plumbi...

Page 66: ...o connect to the pump cut the blue connector splice the wires and add a 4 amp fuse to the hot wire of the pump Rheem recirculation pump kit includes a molex connector and a 4 amp fuse so splicing wires is not required Connect the ground wire from the pump to a screw at the base of the water heater cabinet NOTICE Follow any applicable electrical code and the pump manufacture installation instructio...

Page 67: ...r heater and the pump will turn OFF The cycle will restart at the approximate time interval in the table below based on the temperature thermistor readings Energy Saver Mode The Energy Saver mode operates as follows Less energy consumption due to fewer pump cycles Pump cycles ON every 30 to 69 minutes Performance Mode The Performance mode operates as follows Higher energy consumption due to more p...

Page 68: ...he appliance 3 Do not attempt to light the burner by hand 4 Turn the Gas Shutoff Valve located on the outside of the unit clockwise to the OFF position 5 Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow B in the safety information above on this label If you don t smell gas go to the next step 6 Turn the Gas Shutoff Valve located on the outside of the unit counterclockwise...

Page 69: ...e operating label or on the front cover of this manual Turn the gas shut off valve counterclockwise to the ON position Turn on all electric power to the water heater The water heater burner will automatically light when there is a demand for hot water WARNING DO NOT attempt to light the burner by hand Lighting the burner by hand is an unsafe operating condition that can result in death personal in...

Page 70: ... the shut off valves Press the UP adjustment button repeatedly until 120 F 49 C shows in the LED display Hold the UP button until the 120 on the display starts to blink NOTICE LED display only shows F Time Temperature Relationship in Scalds Water Time to Produce Temperature 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 s...

Page 71: ...mote control Turn off the gas and water to the water heater by closing the shut off valves Press the DOWN adjustment button repeatedly until 100 F 38 C or 85 F 29 C shows in the LED display Hold the DOWN button until the number on the display starts to blink While the number is blinking press the UP and DOWN adjustment buttons at the same time The number will stop blinking Press the UP or DOWN adj...

Page 72: ...s within 5 seconds The display will show 85 Turn on the gas and water to the water heater by opening the shut off valves NOTICE The maximum flow rate at 85 F 29 C is 1 3 gpm 5 0 L m When the water heater is installed above 2000 ft 610 m the settings on the DIP switch located on the control board need to be changed If these settings are not changed the water heater may not function properly NOTICE ...

Page 73: ...P 2 to the ON position UP If altitude is above 5 400 ft 1650 m and below 8 500 ft 2590 m change the fourth switch to the ON position UP NOTICE DO NOT alter any other DIP switch settings The manifold pressure will be reduced accordingly Some models are not available at higher than 5400 ft 1650m Please contact technical service listed on page 26 of this use and care manual if you have any questions ...

Page 74: ...ollow the steps below to turn ON the water saving control 1 Turn off the gas and water to the water heater by closing the shut off valves 2 Remove the front cover panel on the water heater Control Board Dip Switches 3 Find DIP Switch 1 located in the top right portion at the control board The switch labeled DIP 1 is the top switch Change the third switch on DIP 1 to the ON position UP Replace the ...

Page 75: ...on at the control board The switch labeled DIP 1 is the top switch Change the third switch on DIP 1 to the OFF position DOWN Turn on the gas and water to the water heater by opening the shut off valves 4 INSTALLATION INSTRUCTIONS Water Saving Control cont 5 Start Adjust 2 Control Board Dip Switches 3 ...

Page 76: ...nce activities Turn off the remote control Turn off the gas and water to the water heater by closing the shut off valves Remove the front cover panel on the water heater Find DIP switch 2 located in the top right portion of the control board The switch labeled DIP 2 is the bottom switch The factory settings for this switch should all be in the OFF position DOWN Change the third and fourth switches...

Page 77: ...such as flushing the heat exchanger and or replacing the water treatment filter if applicable After these maintenance activities are made follow the steps below in order to clear error code 88 Turn on the remote control Turn off the gas and water to the water heater by closing the shut off valves Press the DOWN adjustment button repeatedly until the lowest setting temperature shows in the LED disp...

Page 78: ... serial number of the water heater from the rating plate 2 Specify the gas type natural or LP as marked on the rating plate 3 Parts description as shown below and number of parts desired Direct Vent Gas Components Ref Description 1 Control Board 2 Gas Valve 3 Burner Assembly 4 Blower Motor 5 Burner Manifold 6 Gas Inlet Connector 3 4 7 Water Control Valve 8 Water Inlet Connector 3 4 9 Inlet Water F...

Page 79: ...cription 1 Control Board 2 Gas Valve 3 Burner Assembly 4 Blower Motor 5 Burner Manifold 6 Gas Inlet Connector 3 4 7 Water Control Valve 8 Water Inlet Connector 3 4 9 Inlet Water Filter 10 Hot Outlet Connector 11 Remote Control Terminal Block 12 Neutralization kit 13 Front Cover ...

Page 80: ...80 NOTES ...

Page 81: ...81 NOTES ...

Page 82: ...82 NOTES ...

Page 83: ...at the recirculation system is an on demand type system or the pump is controlled with a temperature sensor aquastat and timer Commercial with recirculation uncontrolled loop Three 3 years from the Effective Date for the heat exchanger three 3 years from the Effective Date for the component parts and one 1 year from the Effective Date for certain labor as described under the heading LABOR SHIPPING...

Page 84: ...anty failure water heater must be made available to Rheem with the rating label and all the component parts intact in exchange for the replacement water heater Each defective in warranty component part to be replaced must be returned to Rheem in exchange for the replacement component part Warranty compensation is subject to validation of in warranty coverage by Rheem Claims Department personnel To...

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Rheem RTGH-84DVLN-2, Use And Care Manual

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