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Installation Manual
TANKLESS GAS WATER HEATER
NR83OD (GQ-2457WS US)
Potential dangers from accidents during installation and use are divided into the following three
categories. Closely observe these warnings, they are critical to your safety.
DANGER
WARNING
CAUTION
WARNING:
If the information in this manual is not followed exactly, a fire or explosion may result
causing property damage, personal injury or death.
Prohibited
Requests to Installers
• In order to use the water heater safely, read this installation manual carefully, and follow the
installation instructions.
• Failures and damage caused by erroneous work or work not as instructed in this manual are not
covered by the warranty.
• Check that the installation was done properly in accordance with this Installation Manual upon
completion.
• After completing installation, either place this Installation Manual in a plastic pouch and attach it to
the side of the Water Heater (or the inside of the pipe cover or recess box if applicable), or hand it
to the customer to retain for future reference.
SBB80YR-1
Rev. 11/20
DANGER indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation which,
if not avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which,
if not avoided, may result in minor or moderate injury.
Disconnect
Power
CAUTION
Low NOx
Approved by
SCAQMD
14 ng/J or 20 ppm
(Natural Gas Only)
(Outdoor Installation)
Ground
FOR USE IN RESIDENTIAL OR MANUFACTURED HOME APPLICATIONS.
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
Be sure to do
*SBB80YR*
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Related Manuals for Noritz proTOUGH NR83OD
Summary of Contents for Noritz proTOUGH NR83OD
- 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. SBB80YR-1 Rev.
- Page 2 Isolation Valves* (includes pressure Outdoor each relief valve) Junction Box Pipe Cover (PC-2S) Recess Box (RB-700-1) Noritz Connect Wireless Adapter NWC-ADAPTER (NAW-1 US) * Isolation valves are necessary for flushing the Heat Exchanger. They allow for easy flushing of the system.
- Page 3 Quick Connect Multi System Installation • The Quick Connect Multi System allows the installation of two units together utilizing only the Quick Connect Cord. The Quick Connect Cord is 6 ft.(2m) long. Install the units 2-18" (50 - 457mm) apart from each other to ensure the cord will be able to reach between the units.
- Page 4 Before Installation WARNING Check the Gas • Check that the rating plate indicates the correct type of gas. • Check that the gas supply line is sized for 180,000 Btuh. Check the Power • The power supply required is 120VAC, at 60Hz. May result in fire or electric shock.
- Page 5 WARNING • Avoid places where fires are common, such as those where gasoline, benzene and adhesives are handled, or places in which corrosive gases (ammonia, chlorine, sulfur, ethylene compounds, acids) are present. Prohibited Using the incorrect voltage may result in fire or cracking. •...
- Page 6 Installation Clearances WARNING Before installing, check for the following: Install in accordance with relevant building and mechanical codes, as well as any local, state or national regulations, or in the absence of local and state codes, to the National Fuel Gas Code ANSI Z223.1/NFPA 54 –...
- Page 7 Clearance Requirements from Vent Terminations to Building Openings * All clearance requirements are in accordance with ANSI Z21.10.3 and the National Fuel Gas Code, ANSI Z223.1 and in Canada, in accordance with the Natural Gas and Propane Installation Code CSA B149.1. Vent Terminal Air Supply Inlet Area Where Terminal...
- Page 8 Installation Securing to the wall • The weight of the device will be applied to the wall. If the strength of the wall is not sufficient, reinforcement must be done to prevent the transfer of vibration. • Do not drop or apply unnecessary force to the device when installing. Internal parts may be damaged and may become highly dangerous.
- Page 9 The installer must be professionally trained to do such work and must always follow all local and national codes and regulations. Gas line sizing calculations must be performed for every installation. Please contact Noritz America at 866-766-7489 if you have any questions or concerns. Gas Type The gas type indicated on the water heater rating plate (NG or LP) must match the type of gas being supplied to the water heater.
- Page 10 Refer to the NFPA 54 for details. Please contact Noritz for details. For corrugated stainless steel tubing (CSST) capacity tables, please consult with the manufacturer.
- Page 11 Gas is approximately equivalent to 1000 BTU. Sample Gas Line Instructions 1. Size each outlet branch starting from the furthest Noritz Tankless Gas Water Heater using the Btuh required and the length from the meter. Barbecue (180,000 Btuh) 2. Size each section of the main line using the length to...
- Page 12 Installation and service must be performed by a qualified plumber. In the Water Piping Commonwealth of Massachusetts, this product must be installed by a licensed plumber or gas fitter in accordance with the Massachusetts Plumbing and Fuel Gas Code 248 CMR Sections 2.00 and 5.00. Observe all applicable codes. This appliance is suitable for combination potable water and space heating applications.
- Page 13 Source: EPA National Secondary Drinking Water Total Dissolved Solids : 500 mg/L or less Regulations (40 CFR Part 143.3) Zinc : 5 mg/L or less Sulfate ion : 250 mg/L or less Residual chlorine : 4 mg/L or less * Maximum limit suggested by Noritz.
- Page 14 = 1, 2, 3, 4, F # = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 Damage to the water heater as a result of the items below is not covered by the Noritz America Limited Warranty. • Water in excess of 12 gpg (200mg/L) of hardness •...
- Page 15 Procedure for Flushing the Heat Exchanger This procedure is only intended for use by a qualified service professional or authorized Noritz Service Representative. Any unauthorized use of this procedure may result in voiding the warranty.Please contact Noritz America (866-766-7489) for additional support.
- Page 16 Flushing the Heat Exchanger (For Single Unit) 1. Open the Front Cover. 2. Connect the blue connector**** marked "FLUSH" for flushing near the Circuit Board. Water Heater Circuit Board Connect **** The connector color is blue and labeled “FLUSH”. Manifold Plate FLUSH 3.
- Page 17 1. Connect the blue connector marked "FLUSH" for unit needing to be flushed. (The water heater is isolated from Quick Connect Multi system when the blue connector marked "FLUSH" for flushing is connected. Not need to disconnect the Connect Cord.) Sub Water Heater Main Water Heater Connect...
- Page 18 3. Set the Aquastat to 10˚F below the set output temperature. An aquastat is the minimum pump control requirement in order to maintain the full recirculation waranty. Expansion Tank 4. Noritz recommends the use of an Isolation Kit with (Install according the installation. Isolation...
- Page 19 Electrical Wiring Consult a qualified electrician for the electrical work. Do not connect electrical power to the unit until all electrical wiring has been completed. Disconnect Power This appliance must be electrically grounded in accordance with local codes, or in the absence of local codes, with the National Electrical Code, ANSI/NFPA 70.
- Page 20 Remote Controller • Applicable Model * Remarks [125 °F / 55 °C] RC-7651M Remote controller Celsius display mode Fahrenheit display mode Install the remote controller according to the instructions in the Installation Guide (p. 26). * Only one remote controller can be connected to the water heater. A malfunction may occur if two or more remote controllers are connected.
- Page 21 Connecting Remote Controller Cord to Unit • Keep the remote controller cord away from the freeze prevention heaters in the unit. • Tie the redundant cord outside the water heater. Do not put the extra length inside the equipment. • The remote controller cord can be extended up to 300' (90m) with 18AWG wire. •...
- Page 22 * This feature is not available when using the Quick Pump Wiring Connect Multi System feature. Connecting the pump control wire 1. Leave enough slack so that the pump control wires will stay connected if the unit is removed from the wall. Pump Control 2.
- Page 23 Maintenance Periodically check the following to ensure proper operation of the water heater. • The venting system must be examined periodically by a qualified service technician to check for any leaks or corrosion. Yellow Flame or • The burner flame must be checked periodically Lifting Flame for a proper blue color and consistency.
- Page 24 * If both units do not ignite, switch which unit will ignite first by pressing the Max. or Min. Mani-fold Pressure Set Button on the circuit board. (*2) Press Max. or Min. Manifold Unit A Ignites Unit A Doesn't Ignite Pressure Set Button on Unit B Unit B Doesn't Ignite Unit B Ignites...
- Page 25 Dimensions 13.2" (336mm) < inch (mm) > 4 x Ø0.5" (Ø13mm) 2 x 0.3 x 0.5" (6.5 x 13mm) OBLONG HOLE 13.8" (350mm) 9.4" (240mm) 4.7" (120mm) 0.4" (10mm) 0.4" (10mm) 13.1" (334mm) 9.9" (252mm) 2.4" (61mm) 3.3" (85mm) 1.6" (41mm) 2.0"...
- Page 26 For Installers: Read this installation guide Remote Controller RC-7651M carefully before carrying out installation. Installation Guide NORI T Z AMERI C A CORPORATI O N Note Do not connect power to the water heater before the remote controller has been properly installed. Recommended installation location of the remote controller is in a bathroom.
- Page 27 Installation 3. Remove the cover of the remote control, 1. Apply Wall Packing to the rear side of the remote controller. mark the location of the screw holes, and drill holes for the wall anchors. 2. Connect the remote controller wires to the separate remote controller cord.
- Page 28 Installing the Remote Controller Outdoor Junction Box 5. Slide the box nut over the remote controller 1. Insert the remote controller wires through wires and screw it onto the wall pipe. the wall pipe and secure the wall pipe to the remote controller.
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