Noritz NC250-DV-ASME Owner'S Manual Download

Page: 7 / 32

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

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

General Parts

Main Unit .................................................................................................... 8

Remote Controller .................................................................................... 9

Initial Operation ........................................................................................... 10

How to Use

Muting the Remote Controller ................................................................. 11

Setting and Using the Water Heater ........................................................ 12

Flow Meter Alarm ...................................................................................... 14

Adjusting the Maximum Output Temperature ........................................ 16

Preventing Damage from Freezing ............................................................ 17

Regular Maintenance ................................................................................... 19

Troubleshooting .......................................................................................... 21

Follow-up Service ........................................................................................ 26

Specifications .............................................................................................. 28

Contents

Summary of Contents for NC250-DV-ASME

Page 1: ...tinue or change at any time the designs and or specifications of its products without notice Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance 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...

Page 2: ...rdous 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 ...

Page 3: ...eath Prohibited Continued A This water heater does not have a pilot It is equipped with an ignition device that automatically lights the burner Do not try to light the burner by hand B BEFORE OPERATING smell all around the water heater area for evidence of leaking gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor WHAT TO DO IF YOU SMELL GAS Do...

Page 4: ...other appliance Prohibited Prohibited Do not place or use a spray can near the water heater or the exhaust vent terminal Prohibited When installing indoors NC250 SV ASME Left side Min 6 Right side Min 6 Upper Min 36 Front Sug 24 When installing outdoors NC250 SV ASME Sug 3 from vent pipe Upper Min 12 NC250 SV ASME WARNING When installing indoors NC250 DV ASME only Left side Min 6 Right side Min 6 ...

Page 5: ...ary repairs service or maintenance Consult the nearest Noritz agent if the water heater location needs to be changed Don t disassemble the equipment Be sure to do Be sure to do California Proposition 65 lists chemical substances known to the state to cause cancer birth defects death serious illness or other reproductive harm This product may contain such substances be their origin from fuel combus...

Page 6: ...on up to 4500 ft above sea level For installations at higher elevations contact Noritz America for Instructions Check ignition during use and extinction after use Take necessary measures to prevent freezing of water and leakage of gas when leaving the unit unused for long periods of time p 18 Do not use parts other than those specified for this equipment If it is snowing check the air inlet exhaus...

Page 7: ... Initial Operation 10 How to Use Muting the Remote Controller 11 Setting and Using the Water Heater 12 Flow Meter Alarm 14 Adjusting the Maximum Output Temperature 16 Preventing Damage from Freezing 17 Regular Maintenance 19 Troubleshooting 21 Follow up Service 26 Specifications 28 Contents ...

Page 8: ...in Unit Flue Collar Front Cover Air Inlet Water Supply Valve Gas Supply Valve Water Drain Valve with Water Filter Inside Water Inlet p 20 Pressure Relief Valve General Parts NC250 DV ASME Indoor Wall Mounted Power Vent Sealed Model Flue Collar Front Cover Water Drain Valve with Water Filter Inside Water Inlet p 20 Pressure Relief Valve Intake pipe Water Supply Valve Gas Supply Valve ...

Page 9: ...Buttons Before use remove the protective sheet from the remote controller surface Temperature Setting Ex 110 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 24 Prior...

Page 10: ...reparations 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 Ex NC250 SV ASME ...

Page 11: ...Use Muting 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 or higher will not emit a sound when muted ...

Page 12: ...vere burns 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 or higher the temperature display will flash for 10 seconds and emit a tone as a high temperature warning Take caution when using the uni...

Page 13: ...ime of year Initial factory setting is 110 F If fixtures incorporate mixing valves set the temperature higher than usual For most residential applications the recommended setting temperature is 120 F or less For applications that occasionally require a higher temperature setting locate the remote controller in a convenient location Consult local codes for minimum operating temperatures 100 105 110...

Page 14: ...f Button Plug the bath drain Preparation Starting with the power off Always check temperature setting before use Hot Cold On The temperature will be displayed on the remote control thermostat Previous set temperature example 110 F On Check the indicator lights Water temperature 1 ...

Page 15: ...ons 10 60 In 5 gallon intervals 70 100 In 10 gallon intervals or 990 gallons Note The alarm will not sound if it is set for 990 gal Note The alarm will not sound if it is set for 990 gal On Flow meter setting will be flashing ex 45 gal The level can only be adjusted while the indicator is flashing After ten seconds the remote will again display the temperature Off If the flow meter alarm is being ...

Page 16: ...temperature can be changed to 100 F 105 F 110 F 115 F 120 F 125 F 130 F 135 F 140 F 145 F 150 F 160 F 170 F or 180 F 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 When 2 or more units are connected with a system controller the upper limit function is disabled The full range of temperature ...

Page 17: ... or about 0 2 thick If there is a mixing valve set it to the highest level When linking multiple units discharge water equivalent to 0 1 gal minute per unit 5 The flow may become unstable from time to time Check the flow 30 minutes later 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 fr...

Page 18: ...f the unit 6 When the water is completely drained replace all drain plugs and close the hot water fixtures If the water heater will not be used for a long period of time Drain the water Drain the water as follows To avoid burns wait until the equipment cools down before draining the water The appliance will remain hot after it is turned off High Temperature Drain water into a bucket to prevent wat...

Page 19: ...ot water proof Keep it as dry as possible Regular Maintenance 1 Periodic Inspection Check For laundry newspaper timber oil spray cans and other combustible materials Equipment Remote Controller Wipe the surface with a wet cloth For abnormal sounds during operation For abnormalities in external appearance discoloration or flaws For water leaks from the equipment and piping For dust or debris in the...

Page 20: ... 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 water fixtures 8 Open the water supply valve and check that water does not leak from the drain plugs or water drain valve with water filter Water Supply Valve Inlet Packing Water drain valve with water filter Optional Main...

Page 21: ...t water is demanded it is possible for the temperature to be higher than the temperature set on the remote controller If the supply water goes through a solar pre heating system 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 ho...

Page 22: ... used for 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 wa...

Page 23: ...e hot water fixture sufficiently open Is the gas being cut off by the gas 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 Other Sounds The plastic on the surface or buttons of the remote controller has torn p...

Page 24: ...ll leak from the drain plugs as a safety so that the unit is not damaged by the high pressure åÃè ï é Ç Ç í Ç Ç ÇæÇ Ç åÃè ï é Ç Ç í Ç Ç ÇæÇ Ç Water Quality Damage to the water heater as a result of poor water quality is not covered by the Limited Warranty To ensure full warranty coverage treat or condition water that exceeds the target levels provided in this table Source EPA National Secondary Dr...

Page 25: ...sional check the gas supply pressure Contact the nearest Noritz agent Abnormal combustion low gas supply pressure Error Code Cause Action Ignition error Check whether the 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 Contact the nearest Noritz agent Abnormal combustion Con...

Page 26: ... are filled in Read the content carefully and keep the warranty card in a safe place For repairs after the warranty period there will be a charge on any service and service will only be performed if the unit is deemed repairable Period of Time for Stocking Repair Parts Noritz will stock repair and maintenance parts for this unit within twelve 12 years of the date of original installation Reinstall...

Page 27: ...ce 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 installation is not pr...

Page 28: ...ews Specifications Specifications Performance Item Model Name Type Ignition Operating Pressure Minimum Flow Rate Dimensions Weight Water Holding Capacity Connection Sizes Accessories Installation Air Supply Exhaust Power Supply Materials Water Inlet Hot Water Outlet Gas Inlet Supply Consumption Casing Flue Collar Heat Exchanger Safety Devices Item Gas Consumption Maximum Hot Water Capacity Capacit...

Page 29: ...ion Operating Pressure Minimum Flow Rate Dimensions Weight Water Holding Capacity Connection Sizes Accessories Installation Air Supply Exhaust Power Supply Materials Water Inlet Hot Water Outlet Gas Inlet Supply Consumption Casing Flue Collar Heat Exchanger Safety Devices Item Gas Consumption Maximum Hot Water Capacity Capacity Range Temperature Settings Default Temperature Options NG LP 45 F Rise...

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