Noritz GQ-2457WS US Owner'S Manual Download Page 9 | Manualshive

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Noritz GQ-2457WS US Owner'S Manual Download Page 9

9

Main Unit

NR83OD (GQ-2457WS US)

(Outdoor Wall Mounted, Power Vented Model)

Air Inlet

Gas Supply Valve

Pressure Relief Valve

Exhaust Vent

Front Cover

Water Drain Valve

(with Water Filter)

(Inside Water Inlet)

( p.20)

Water Supply Valve

* The above illustration shows an example of installation.

The exact installation configuration may be slightly different.

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Summary of Contents for GQ-2457WS US

Page 1: ...CTURED HOME APPLICATIONS SBB80YQ Thank you for purchasing this Noritz Tankless Gas Water Heater Before using please Read this manual completely for operation instructions Completely fill out the warranty registration card included separately and mail the detachable portion to Noritz America Corporation Keep this manual and the remainder of the warranty registration card where it can be found whene...

Page 2: ...ous situation which if not avoided may result in property damage CAUTION Be sure to do Ground Electric Shock DANGER Icons warning of risk level Important Safety Information 1 This is the safety alert symbol It is used to alert you to potential personal injury hazards Obey all safety messages that follow this symbol to avoid possible injury or death Vapors from flammable liquids will explode and ca...

Page 3: ... 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 C Use only your hand to turn the gas valve knob Never use tools If the knob will not turn by hand don t try to repair it Call a qualified service technician Force or attempted repair may result in a fire or explosion D Do no...

Page 4: ...ter heater or the flue terminal Do not use hair spray or spray detergent in the vicinity of the heater Prohibited Prohibited NR83DVC Do not place outdoors Rain may enter the unit or the burner fire may be blown by the wind causing malfunction or fire as a result Prohibited Outdoor Do not place combustibles such as laundry newspapers oils etc near the heater or the flue terminal Prohibited Do not u...

Page 5: ...near it or in any way block the flow of fresh air to the unit Do not turn off the water heater while someone is bathing Prohibited Do not use a broken or modified power cord Do not bind bend or stretch power cords Do not scratch modify or subject them to impact or force Do not touch the flue terminal and concentric pipe during or immediately after operation of the water heater Do not install in lo...

Page 6: ...or damage to the internal electrical components For single handle fixtures you d turn the handle to the left If the water supply is in excess of 12 grains per gallon 200 mg L of hardness acidic or otherwise impure treat the water with approved methods in order to ensure full warranty coverage p 21 Preventing damage from freezing p 18 Damage can occur from frozen water within the device and pipes e...

Page 7: ... Initial Operation 11 How to Use Setting and Using the Water Heater 12 Flow Meter Alarm 14 Muting the Remote Controller 16 Adjusting the Maximum Output Temperature 17 Preventing Damage from Freezing 18 Regular Maintenance 20 Troubleshooting 22 Follow up Service 26 Specifications 28 Contents ...

Page 8: ...The exact installation configuration may be slightly different Main Unit Front Cover Water Supply Valve Gas Supply Valve Water Drain Valve with Water Filter Inside Water Inlet p 20 In this Owner s Guide this panle will be referred to as the Remote Controller Pressure Relief Valve General Parts 1 Operation Panel Concentric Pipe ...

Page 9: ... Air Inlet Gas Supply Valve Pressure Relief Valve Exhaust Vent Front Cover Water Drain Valve with Water Filter Inside Water Inlet p 20 Water Supply Valve The above illustration shows an example of installation The exact installation configuration may be slightly different ...

Page 10: ... F Flow Meter Setting The display will flash after hitting the flow meter alarm set button p 15 Error Code When this indicator is lit the hot water temperature can be set p 12 What is actually displayed depends on how the water heater is set A number will flash if a failure occurs p 25 Priority Indicator Burner On Indicator When burning the indicator is lit p 13 and 15 Note As shipped from the fac...

Page 11: ...ollow steps 1 through 4 1 Open the water supply valve Open a hot water fixture to confirm that water is available and then close the fixture again 3 Open the gas supply valve Hot water fixture 2 Turn on the power CLOSED 4 OPEN Do not touch with wet hands Ex NR83DVC GQ 2457WS FFA US ...

Page 12: ...instantly or death from scalding Children disabled and elderly are at the highest risk of being scalded Feel water temperature before bathing or showering Temperature limiting valves are available ask professional person When setting the unit to 125 F 55 C in C mode or higher the temperature display will flash for 10 seconds and emit a tone as a high temperature warning Take caution when using the...

Page 13: ...igh temperature 46 47 48 50 55 60 115 117 118 122 131 140 The maximum output temperature can be set using the remote controller page 16 When using F mode When using C mode Initial factory setting is 115 F 115 120 125 130 135 140 Shower hot water supply etc High temperature The maximum output temperature can be set using the remote controller page 16 F The temperature settings below are examples Th...

Page 14: ...ed to indicate when a tub is full If any hot water is being used besides what is going into the tub the alarm will sound before the tub is full If there was water in the tub before the fill began or if the water is not shut off manually when the alarm sounds the tub may overflow If there was water in the tub before the fill began the temperature in the tub after it is full may be different from th...

Page 15: ... sound if it is set for 990 gallon Note The alarm will not sound if it is set for 990 gallon On Flow meter setting will be flashing ex 45 gallon Off The alarm will sound when the set level has been reached Stop the water The level can only be adjusted while the indicator is flashing After ten seconds the remote will again display the temperature On Flow meter setting will be flashing ex 180L Off I...

Page 16: ...ing the Remote Controller Initial factory setting is with sound Sound Muted No sound after 5 sec 1 Hold the Power On Off Button for five seconds Tone sounds after 5 sec The flow meter alarm cannot be muted The high temperature warning tone when setting the unit to 125 F 55 C in C mode or higher will not emit a sound when muted ...

Page 17: ...til a sound is heard 2 sec Up Down The upper limit of the hot water supply temperature can be changed to For Fahrenheit F 115 F 120 F 125 F 130 F 135 F or 140 F For Celsius C 46 C 47 C 48 C 50 C 55 C or 60 C 2 Turn off the power Off 1 Set the Power button to ON when continuing to use the unit as is Otherwise let the unit sit for 30 sec 4 Tone sounds after 2 sec ...

Page 18: ...s not advisable to run water through the unit when it is OFF p 6 but in this case freeze prevention is more important Remember to set mixing valves and fixtures to their original levels before using the unit again to prevent scalding If there is still a risk that the unit will freeze drain the unit as shown on the next page 0 2 4mm thick Hot Water Fixture Preventing Damage from Freezing Freezing i...

Page 19: ... open and then remove 7 Check that the water is completely drained close all the drain plugs and the hot water fixtures after 10 minutes or more pass from operation of 6 Drain water into a bucket to prevent water damage Fixture Do not touch with wet hands Drain Plugs Each drain plug mignt not be visible if insulation is installed around the piping To prevent damage from freezing the water heater m...

Page 20: ...ean the filter as explained below To avoid burns wait until the equipment cools down before draining the water The appliance will remain hot after it is turned off Water Drain Valve with Water Filter 1 Close the water supply valve 2 Open all hot water fixtures 3 With a bucket ready remove the inlet and outlet drain plugs about 0 2 gallon 0 95L will drain out 4 Take the water drain valve with water...

Page 21: ...e is flashing on the Remote Controller the Heat Exchanger needs to be flushed to prevent damage from Scale Build up Please contact Noritz America for more information about flushing the Heat Exchanger http support noritz com or 866 766 7489 1 2 3 4 F 0 1 2 3 4 5 6 7 8 9 Total Hardness 200 mg L 12 gpg or less Aluminum 0 05 to 0 2 mg L or less Chloride 250 mg L or less Copper 1 mg L or less Iron 0 3...

Page 22: ... than the temperature set on the Remote Controller If only a small amount of hot water is demanded it is possible for the temperature to be higher than the temperature set on the Remote Controller The water is too hot Have you allowed enough time for the cold water in the pipes to drain out Water takes time to become hot when turning the hot water fixture No water is available when a fixture is op...

Page 23: ...other fixtures while filling the bath tub the tub will not fill as much If there is water in the tub already or when filling is stopped and restarted the tub will fill more The flow meter alarm does not sound even when filled to the set amount The flow meter alarm is set to sound when hot water is continuously discharged for the set volume of water If mixing valves are used or if cold water is mix...

Page 24: ...s devices such as stoves be used This is normal The white smoke is actually steam White smoke comes out of the exhaust vent on a cold day The hot water is turbid This is harmless Small bubbles appear as the air in the water is heated and depressurized rapidly to atmospheric pressure The water appears blue The bath tub wash basin has turned blue Coloration to a blue color may be noticed from small ...

Page 25: ...en Press the power button to turn the unit off open a hot water fixture and turn the unit back on If the flashing number doesn t return the problem is solved The unit may shut off and lock before long Needs to be flushed the Heat Exchanger to remove the Scale Build up If the unit will shut off and locked for this error the unit can temporarily operate by disconnecting electrical power until the He...

Page 26: ...y be rejected if the water heater is installed in a location where working on the unit may be dangerous Contact a plumber We will need to know The Model check the rating plate See p 4 for the location of the label Date of purchase see the warranty Details of problem flashing error codes etc in much detail as possible Your name address and telephone number Desired date of visit Noritz will stock re...

Page 27: ...e gas conversion kit shall be installed by a qualified service agency in accordance with the manufacturer s instructions and all applicable codes and requirements of the authority having jurisdiction The information in the instructions must be followed to minimize the risk of fire or explosion or to prevent property damage personal injury or death The qualified service agency is responsible for th...

Page 28: ... Prevention Device Fan Rotation Detector Anchoring Screws Remote Controller Remote Controller Cord Anchoring Screws Specifications Performance Item Model Name Type Ignition Operating Pressure Minimum Activation Flow Rate Minimum Operating Flow Rate Dimensions Height x Width x Depth Weight Water Holding Capacity Accessories Installation Air Supply Exhaust Connection Sizes Power Supply Materials Wat...

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