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Noritz GQ-C3257WX-FF US, Owner'S Manual, Page: 7 / 32

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Noritz GQ-C3257WX-FF US Owner'S Manual Download Page 7

7

 

Important Safety Information ....................................................................... 2

 Contents......................................................................................................... 7

 

Overview of Condensing Tankless Gas Water Heater  .............................. 8

 

General Parts

 

    Main Unit .................................................................................................... 9 

 

    Remote Controller .................................................................................... 10

 

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 ................................................................................... 21

 

Troubleshooting ........................................................................................... 24

 

Follow-up Service ........................................................................................ 29

 

Specifications ............................................................................................... 31

 

Warranty ........................................................................................................ 32

Contents

Summary of Contents for GQ-C3257WX-FF US

Page 1: ... Thank you for purchasing this Noritz Tankless Gas Water Heater Before using please Read this manual completely for operation instructions To ensure full coverage by the Noritz America Corporation Limited Warranty service see the warranty registration information p 32 and then visit the Thermalux website www thermalux com warranty to register your product Keep this manual because the warranty regi...

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: ...nob 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 not use this water heater if any part has been under water lmmediately call a qualified service technician to inspect the water heater and to replace any damaged parts Continued Prohibited Check the temperature of the runn...

Page 4: ...in the vicinity of the heater Prohibited Prohibited 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 Leave the proper clearance between the water heater and nearby objects trees timber boxes with flammable materials etc Be sure to do Indicates suggested clearances for maintenance Do not place combus...

Page 5: ...ken 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 exhaust vent pipe and exhaust vent terminal during or immediately after operation of the water heater Do not install in locations where excessive dust or debris will be in the air Prohibited Don t touch Prohibited Be sure to do To prevent burns or scalding tu...

Page 6: ...age can occur from frozen water within the device and pipes even in warm environments Be sure to read below for appropriate measures Repairs for damage caused by freezing are not covered by the warranty Take necessary measures to prevent freezing of water and leakage of gas when leaving the unit unused for long periods of time p 19 Do not use parts other than those specified for this equipment If ...

Page 7: ...Remote Controller 10 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 21 Troubleshooting 24 Follow up Service 29 Specifications 31 Warranty 32 Contents ...

Page 8: ...ock the drain line as it must always be allowed to freely flow Note The condensate discharged is acidic with a pH level of approximately 2 3 A condensate neutralizer may be required by local code prior to disposal Drain pipe Installation example Overview of Condensing Tankless Gas Water Heater This water heater is a high efficiency fully condensing appliance Unlike a traditional tankless water hea...

Page 9: ...an example of installation The exact installation configuration may be slightly different Main Unit Front Cover Water Supply Valve Water Drain Valve with Water Filter Inside Water Inlet p 22 Pressure Relief Valve General Parts 1 Intake Pipe Flue Collar Gas Supply Valve Drain Pipe Discharges the condensate ...

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 28 Priority Indicator Burner On Indicator When burning the indicator is lit p 13 and 15 Note As shipped from the fac...

Page 11: ...he following Follow 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 ...

Page 12: ...rns 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...

Page 13: ...emperature The maximum output temperature can be set using the remote controller p 17 C F The temperature settings below are examples The temperature setting necessary depends on the usage the length of piping and the time of year Initial factory setting is 40 C 104 F Shower hot water supply etc Washing dishes etc High temperature 37 38 39 40 41 42 43 44 45 46 47 48 50 55 60 99 100 102 104 106 108...

Page 14: ...g used 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 fro...

Page 15: ... 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 Initial factory setting 110 F or 40 C 104 F Water ...

Page 16: ...uting 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 131 F or higher will not emit a sound when muted ...

Page 17: ...wn The upper limit of the hot water supply temperature can be changed to For Fahrenheit F 100 F 105 F 110 F 115 F 120 F 125 F 130 F 135 F or 140 F For Celsius C 37 C 38 C 39 C 40 C 41 C 42 C 43 C 44 C 45 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: ... 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 Preventing Damage from Freezing 1 Freezing is prevented within the device a...

Page 19: ...o the unit 3 4 5When the water is completely drained replace all drain plugs and close the hot water fixtures 5 Open all drain plugs and drain the water out of the unit 6 Close the gas valve 1 When the water is completely drained replace all drain plugs and close the hot water fixtures Fixture Fixture Ex 120 F Do not touch with wet hands Do not touch with wet hands Drain water into a bucket to pre...

Page 20: ...begin to discharge from the drain pipe within 15 minutes of use However depending on the season and or installation site conditions it may take longer If water does not appear at the end of the drain line a qualified service technician must clean the condensate line After the water heater has been out of use for a long time make sure that you fill the condensate trap with water This is to prevent ...

Page 21: ...to do To prevent burns or scalding turn off the power button and wait until the equipment cools before performing maintenance CAUTION Check For abnormal sounds during operation For abnormalities in external appearance discoloration or flaws For water leaks from the equipment and piping For dust and soot in the exhaust vent or exhaust vent terminal Check Check Check Check For blockage at the drain ...

Page 22: ...es 3 With a bucket ready remove the inlet and outlet drain plugs about 0 45 gallon 1 7 L will drain out 4 Take the water drain valve with water filter out of the inlet See illustration to right 5 Clean the water drain valve with water filter with a brush under running water 6 Replace the water drain valve with water filter and close the drain plugs Take care not to lose the packing 7 Close all hot...

Page 23: ...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 855 960 3434 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 mg L or less Manganese 0 05 mg L or less pH 6 5 8 5 Total Dissolved S...

Page 24: ... 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 25: ...ther 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 mixe...

Page 26: ... meter Can other gas devices such as stoves be used For LP Is there enough gas in the tank Can other gas 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 Other Sounds ...

Page 27: ...s of copper ion contained in the water and fat furring However there are not problems concerning health Coloration of the bath tub wash basin can be prevented by cleaning frequently Continued Frequent water discharge from the drain pipe Condensation forms inside the unit during operation and is discharged from the drain pipe ...

Page 28: ...e gas valve is open 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 Check to see if the condensate drain pipe is clogged or frozen p 8 Contact the installer or Thermalux Customer Care for assistance Clogging of condensate trap or drain pipe The unit may shut off and lock before long Needs to ...

Page 29: ...at 855 960 3434 A request for service may 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 De...

Page 30: ...alified 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 the proper installation of this kit The installat...

Page 31: ... Anchoring Screws Specifications Performance Item Model Name Type Ignition Operating Pressure Minimum Flow Rate Dimensions Height x Width x Depth Weight Water Holding Capacity Accessories Installation Air Supply Exhaust Connection Sizes Power Supply Materials Water Inlet Hot Water Outlet Gas Inlet Condensate Drain Safety Devices Item Gas Consumption Maximum Hot Water Capacity Capacity Range Temper...

Page 32: ...at Noritz s option either the same comparable or better model to be shipped at Noritz s expense or ii a full refund of the purchase price paid for the Product excluding labor or installation costs These remedies are the Buyer s only remedies for breach of Warranty 5 DISCLAIMER OF WARRANTIES THE FOREGOING WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO...

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