Table of Contents
Advertisement
Quick Links
TANKLESS GAS WATER HEATER
Owner's Guide
FOR USE IN RESIDENTIAL OR MANUFACTURED HOME APPLICATIONS.
WARNING
- 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. Follow the
gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
- Installation and service must be performed by a qualified installer, service
agency or the gas supplier.
Low NOx Approved
by SCAQMD
14 ng/J or 20 ppm
(Natural Gas Only)
SBB80YQ-1
Rev.11/20
Models : NR83DVC (GQ-2457WS-FFA US)
NR83OD (GQ-2457WS US)
If the information in this manual is not followed exactly, a fire or explosion
may result causing property damage, personal injury, or death.
Thank you for purchasing this Noritz Tankless Gas Water Heater.
Before using, please:
Read this manual completely for operation instructions.
See the warranty registration card (included separately), and then visit
the Noritz website (www.noritz.com/warranty) to register your product.
Keep this manual (and the warranty registration card) where it can be
found whenever necessary.
Installation must conform with local codes, or in the absence of local
codes, the National Fuel Gas Code, ANSI Z223.1/NFPA 54 - latest edition
and/or the Natural Gas and Propane Installation Code CSA B149.1 -
latest edition.
When applicable, installation must conform with the Manufactured
Home Construction and Safety Standard, Title 24 CFR, Part 3280 or the
Canadian Standard CAN/CSA-Z240 MH Mobile Homes, Series M86.
Noritz America reserves the right to discontinue, or change at any
time, the designs and/or specifications of its products without notice.
NORITZ America Corporation
*SBB80YQ*
Advertisement
Table of Contents
Related Manuals for Noritz GQ-2457WS-FFA US
Summary of Contents for Noritz GQ-2457WS-FFA US
- Page 1 Home Construction and Safety Standard, Title 24 CFR, Part 3280 or the Canadian Standard CAN/CSA-Z240 MH Mobile Homes, Series M86. Noritz America reserves the right to discontinue, or change at any time, the designs and/or specifications of its products without notice.
-
Page 2: Important Safety Information
Important Safety Information-1 To prevent damage to property and injury to the user, the icons shown below will be used to warn of varying levels of danger. Every indication is critical to the safe operation of the water heater and must be understood and observed. Potential dangers from accidents during installation and use are divided into the following four categories. - Page 3 Be sure 1. Turn off the hot water supply to do. will settle on the floor. 2. Turn off the power to the water WHAT TO DO IF YOU SMELL GAS. heater • Do not try to light any 3. Turn off gas and water supply valve. appliance. 4. Call the nearest Noritz agent • Do not touch any electrical switch; do not use any phone Explosion Hazard ; in your building. • Immediately call your gas If the temperature and pressure relief supplier from a neighbor’s valve is dripping or leaking, have a Prohibited phone. Follow the gas supplier’s qualified service technician replace it. instructions. Do not plug or remove the valve. • If you cannot reach your gas Failure to follow these instructions can supplier, call the fire department.
- Page 4 Be sure to do. Leave the proper clearance between Ex. For Natural Gas the water heater and nearby objects (NR83DVC (GQ-2457WS-FFA US)) (trees, timber, boxes with flammable Be sure materials etc.). to do. Upper: [NR83OD] Min. 36" (900mm) Left side: Min. 6" (150mm) Right side: Min.
- Page 5 Do not touch the power origin from fuel combustion (gas, oil) or cord with wet hands. components of the product itself. Don’t touch The gas conversion kit shall be installed by a Electric with a wet hand. Shock. qualified service agency in accordance with Consult the nearest Noritz agent if the manufacturer’s instructions and all applicable codes and requirements of the the water heater location needs to authority having jurisdiction. The be changed. Be sure information in the instructions must be to do. followed to minimize the risk of fire or Contact a qualified service explosion or to prevent property damage, technician for any necessary personal injury, or death. The qualified...
- Page 6 Important Safety Information CAUTION This unit is only approved for installation Do not drink water that has been inside the up to 4500 ft. (1350m) above sea level. unit for an extended period of time. Do not drink the first use of hot water from the For installations at higher elevations, contact Noritz unit in the morning. America for Instructions. Do not disassemble the Remote Controller. Clean the filter on the water inlet as frequently as required by the quality of Do not use benzene, oil or fat detergents your local water. ( p.20 and p.21) to clean the Remote Controller. Keep the area around the unit clean. This may cause deformation. If boxes, weeds, cobwebs, cockroaches etc. are in Do not get the Remote Controller wet. the vicinity of the unit, damage or fire can result.
-
Page 7: Table Of Contents
Contents Important Safety Information ............... 2 Contents......................7 General Parts Main Unit ....................8 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 ........ -
Page 8: General Parts
General Parts-1 Main Unit NR83DVC (GQ-2457WS-FFA US) (Indoor Wall Mounted, Power Vent/Sealed Model) Concentric Pipe Front Cover Operation Panel In this Owner’s Guide, this panle will be referred to as the “Remote Controller”. Water Drain Valve (with Water Filter) (Inside Water Inlet) p.20) Pressure Relief Valve Gas Supply Valve Water Supply Valve * The above illustration shows an example of installation. The exact installation configuration may be slightly different. - Page 9 Main Unit NR83OD (GQ-2457WS US) (Outdoor Wall Mounted, Power Vented Model) Exhaust Vent Front Cover Air Inlet Water Drain Valve (with Water Filter) (Inside Water Inlet) p.20) Pressure Relief Valve Water Supply Valve Gas Supply Valve * The above illustration shows an example of installation. The exact installation configuration may be slightly different.
-
Page 10: Remote Controller
General Parts-2 Remote Controller (RC-7651M) What is actually displayed depends on how the water heater is set. Setting Buttons Burner On Indicator When burning, the For setting the hot indicator is lit. water temperature, p.13 and 15) the flow meter alarm, and other settings. Priority Indicator When this indicator is lit, the hot water temperature can be set. p.12) Power On/Off Button Temperature Setting... -
Page 11: Initial Operation
Open the water supply valve. OPEN CLOSED Open a hot water fixture to confirm that water is available, and then close the fixture again. Hot water fixture Open the gas supply valve. Turn on the power. Do not touch with wet hands. (Ex. NR83DVC (GQ-2457WS-FFA US)) -
Page 12: How To Use
How to Use Setting and Using the Water Heater (Starting with the Power Off) Press the Power On/Off Button. The temperature will be displayed on the Remote Controller. Previous set temperature (Ex.: 120°F) DANGER To prevent scalding: High Temperature Hot Water Heater temperatures over 125°F (52°C) can cause severe 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. - Page 13 Note : An error code will be displayed when this water heater detects scale build-up in the heat exchanger. The error code may be more frequently displayed when the unit is set to a high temperature. (125°F or higher) Noritz recommends that water temperature is set as low as possible to prevent scale build-up in the heat exchanger.
-
Page 14: Flow Meter Alarm
How to Use Flow Meter Alarm If the flow meter alarm is being 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. •... - Page 15 Water Temperature An alarm will sound for ten °F : The temperatures settings below are only examples. The seconds when the flow temperature setting necessary will depend on the usage, the length of piping and the time of year. reaches the set level. 115 °C (°F) : The temperatures settings below are only examples.
-
Page 16: Muting The Remote Controller
How to Use Muting the Remote Controller The Remote Controller will emit a sound when any button is pushed. This sound can be muted if it is desired. * Initial factory setting is with sound Hold the Power On/Off Button for five seconds. Sound Muted No sound Tone sounds after 5 sec. -
Page 17: Adjusting The Maximum Output Temperature
How to Use Adjusting the Maximum Output Temperature Change the Turn off the Press and hold the flow temperature using power. meter alarm set button until the setting buttons. a sound is heard (2 sec.). Tone sounds after 2 sec. 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. -
Page 18: Preventing Damage From Freezing
(Freezing will be prevented regardless of whether the operation switch is ON or OFF.) * In normal operation, freezing is prevented within the device automatically unless the outside temperature without wind is below -30°F (-35°C) for NR83DVC (GQ-2457WS-FFA US) or -4°F (-20°C) for NR83OD (GQ-2457WS US). - Page 19 If the water heater will not be used for a long period of time, drain the water. Drain the water as follows: CAUTION 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 To prevent damage from freezing, the water heater must be plugged into power at all times. If power is unplugged, drain the water completely from the water heater.
-
Page 20: Regular Maintenance
For proper operation of Check pressure relief valve. (Ex. NR83DVC (GQ-2457WS-FFA US)) Periodic Maintenance Water Drain Valve (with Water Filter) If the water drain valve (with water filter) is covered with debris, the hot water may not run smoothly, or the unit may put out cold water. Check and clean the filter as explained below. - Page 21 When the error code " "* 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)
-
Page 22: Troubleshooting
Troubleshooting-1 Initial Operation • Check for reversed plumbing or crossed pipes. Unit does not attempt to ignite when water is running. • Check the water drain valve filter. ( p.20 ) Unit attempts to ignite but fails • Reset unit and try again. There may be air in the gas line. •... - Page 23 (Continued) • The unit will not heat the water if the flow rate is less than The water is cold when only a single fixture is open. 0.5 gallons (2L) per minute. Open the fixture more or open other fixtures so that a greater flow passes through the unit, and the unit should begin heating again.
- Page 24 Troubleshooting-2 Remote Controller The light on the power button does • Has there been a power failure? not come on. • Is the power connected properly? The water temperature changes • The temperature setting and the flow meter alarm setting after a power failure or when the may both need to be reset after a power outage.
- Page 25 Heat Exchanger can be flushed. Contact Noritz America for more information about flushing the Heat Exchanger. (866-766-7489) The unit detects the Scale The unit is locked because of repeated Scale Build- Build-up in the Heat up error codes.
-
Page 26: Follow-Up Service
Period of Time for Stocking Repair Parts Noritz will stock repair and maintenance parts for this unit for the time period from the date of the original installation as follows: twelve (12) years for the heat exchanger and ten (10) years for remaining parts. - Page 27 This work must be performed by either Noritz or a qualified service agency and will be charged for even during the warranty period. The qualified installer will also be responsible for purchasing the gas conversion kit directly from the manufacturer.
-
Page 28: Specifications
• The capacity may differ slightly, depending on the water pressure, water supply, piping conditions, and water temperature. Specifications Item Specification Model Name NR83DVC (GQ-2457WS-FFA US) NR83OD (GQ-2457WS US) Installation Indoor Wall Mounted Outdoor Wall Mounted Type Air Supply/Exhaust Power Vented...