Noritz NRC98-OD Installation Manual
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Noritz NRC98-OD Installation Manual

Noritz NRC98-OD Installation Manual

Tankless gas water heater
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Installation Manual
TANKLESS GAS WATER HEATER
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 in-
stallation 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, please 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. Also, be sure to fill in all of the required
items on the warranty and to hand the warranty to the customer along with the Owner's Guide.
CERTIFIED
R
SBA8677
Rev. 06/11
NRC98-OD
NRC83-OD
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
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 CSA B149.1,
Natural Gas and Propane Installation Code (NSCNGPIC).
When applicable, installation must conform with the Manufactured Home
Construction and Safety Standard, Title 24 CFR, Part 3280 or the Canadian
Low NOx
Standard CAN/CSA-Z240 MH Mobile Homes, Series M86.
Approved by
Noritz America reserves the right to discontinue, or change at any time, the
SCAQMD
designs and/or specifications of its products without notice.
(Outdoor Installation)
Ground
NORITZ AMERICA
CORPORATION
Be sure to do
*SBA8677*

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Summary of Contents for Noritz NRC98-OD

  • Page 1 Installation Manual NORITZ AMERICA CORPORATION TANKLESS GAS WATER HEATER NRC98-OD (Outdoor Installation) NRC83-OD 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 indicates an imminently hazardous situation which, DANGER if not avoided, will result in death or serious injury.

  • Page 2: Included Accessories

    The following accessories are included with the unit. Included Accessories Check for any missing items before starting installation. Q’ty Q’ty Part Shape Part Shape Owner's Guide, Warranty, Cross Recessed Installation Manual Head Screw each (this document) Remote Controller Remote Controller (See p.

  • Page 3: Quick Connect Multi System Installation

    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

    Check the Gas • Check that the rating plate indicates the correct type of gas. • Check that the gas supply line is sized for NRC98-OD (eco TOUGH) 180,000 Btuh for NRC98-OD, 157,000 Btuh 180,000 BTU for NRC83-OD. 16,000 BTU 10.5"...
  • 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

    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 NSCNGPIC. Vent Terminal Area Where Terminal is Not Permitted Air Supply Inlet Outdoor Installation Clearance...
  • Page 8 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 NSCNGPIC. Maintain the following clearances to any Illustration opening in any building: For installations in the USA, •...

  • Page 9: Securing To The Wall

    Installation Securing to the wall • The weight of the device will be applied to the wall. If the strength of the wall is not suffi- cient, 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 10: Gas Piping

    Outlet D: 25' (7.5m) (Use 30' (9m)), 25,000 Btuh requires 1/2" Section 3: 45' (13.5m) (Use 50' (15m)), 175,000 Btuh requires 1" Natural Gas Outlet E: 25' (7.5m) (Use 30' (9m)),180,000 Btuh requires 3/4" (NRC98-OD), Meter **See next page for the pipe capacity charts.
  • Page 11 Gas Line Sizing for a Noritz Condensing Tankless Gas Water Heater Adapted from UPC 1997 Maximum Natural Gas Natural Gas Delivery Capacity in Cubic Feet per Hour (0.60 Specific Gravity, 0.5" WC Pressure Drop) Length in Feet Pipe 10' (3m) 20' (6m) 30' (9m) 40' (12m) 50' (15m) 60' (18m) 70' (21m) 80' (24m) 90' (27m) 100' (30m) 125' (37.5m) Size 1/2"...

  • Page 12: Water Piping

    Z21.22, or The ANSI/ASME Boiler and Pressure Vessel Code, Section IV ( Heating Boilers ). This pressure relief valve must be capable of an hourly Btu rated temperature steam discharge of 180,000 Btuh(NRC98-OD), 157,000 Btuh(NRC83-OD). Multiple valves may be used. The pressure relief capacity must not exceed 150 psig. No valve shall be placed between the relief valve and the water heater.
  • Page 13 • If this model is installed in an area where the outside temperature can approach freezing conditions of -4°F (-20°C) or below for NRC98-OD, NRC83-OD, then additional freeze protection measures must be used. For temporary freeze protection measures, refer to the Owner's Guide.

  • Page 14: Water Treatment

    Water Treatment This water heater is equipped with an optional automatic service reminder function to alert the user when À ushing or a cartridge/¿ lter change is required. Once activated, the unit will display an "05" error code on the remote controller when maintenance is due. The service interval can be set for either 6, 12, or 24 months;...

  • Page 15: Water Treatment System

    If this water heater will be installed in an application where the supply water is hard, the water must be treated with either the Noritz H2Flow or ScaleShield or a water softener. Refer to the below tables for suggested treatment and maintenance measures to be taken based on the water hardness level. Dam- age to the water heater as a result of water in excess of 12 gpg (200 mg/L) of hardness is not covered by the Noritz America Limited Warranty.

  • Page 16: Condensate Piping

    Condensate Piping CAUTION Due to the acidic nature of the condensate, be sure to properly drain and if necessary, treat the condensate prior to disposal. Damage caused by improperly handled condensate is not covered by the warranty. • This water heater is a high ef¿ ciency, fully condensing appliance which produces acidic condensate during operation.
  • Page 17 Condensate piping to floor drain Condensate piping with pump NORITZ NORITZ Condensing Condensing Tankless Gas Tankless Gas Water Heater Water Heater DO NOT ADD DO NOT ADD ANY VALVES ANY VALVES 1/2" PVC pipe 1/2" PVC pipe 3/8" ID tubing* Slope pipe downwards 1/2"...

  • Page 18: Plumbing Applications

    Plumbing Applications Recirculation System Notes: 1. Size the pump to provide a maximum of 2 GPM (7.5 L/min.) through the system at 10 ft (3m) of head plus piping losses. Hot Water Return Adjust the flow using a globe valve and verify the flow rate with the maintenance monitors.

  • Page 19: Electrical Wiring

    • The electrical supply required by the water heater is the gas piping. 120VAC at 60 Hz. The power consumption may be up to 271W (NRC98-OD), Tie the redundant power cord out- 257W (NRC83-OD) or higher if using optional accessories.

  • Page 20: Remote Controller

    To keep the water heater off, let the unit sit for 30 sec. to return to the original display. • The NRC98-OD, NRC83-OD can be programmed so that it will default to one of three temperatures if the remote controller is removed (140, 130, 120 °F (60, 55, 50 °C)). To change the default tempera- ture, adjust the dip switches as described below.
  • 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: Pump Wiring

    * 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 Pump Control wall.

  • Page 23: Connecting Quick Connect Cord

    For Quick Connect Multi System Installation Connecting Quick Connect Cord-2 use part #QC-2 only. (sold separately). Caution The wire coloring on the Quick Connect Cord-2 will not be the same as the wire coloring of the connection plug inside the unit. 1.Red 1.Red 1.White...

  • Page 24: Maintenance

    Periodically check the following to ensure proper Maintenance operation of the water heater. • The venting system must be examined periodically by a quali¿ ed service technician to check for any leaks or corrosion. • The burner À ame must be checked periodically for a proper blue color and consistency. •...

  • Page 25: Lighting Instructions

    CAUTION Handling after trial operation • If the unit will not be used immediately, close off all gas and water shutoff valves, drain all of the water out of the unit and the plumbing system to prevent the unit and system from freez- ing, and bleed the gas out of the gas line.
  • Page 26 Dimensions 17.7" (450mm) < mm [inch] > 4- Ø0.5"(Ø13mm) 6- 0.24" x 0.4" (6 x10mm) OBLONG HOLE 6.7" (170mm) 18.3" (464mm) 5.5" (140mm) 9.4" (240mm) 0.4" (10mm) 0.5" (13mm) 17.6" (448mm) 3.9" (100mm) 10.5" (267mm) 3.9" (99mm) 1.1" (28mm) 2.8" (70mm) 1.4"...
  • Page 27 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 28 Installation 3. Remove the cover of the remote control, 1. Apply Wall Packing to the rear side of the mark the location of the screw holes, and remote controller. drill holes for the wall anchors. 2. Connect the remote controller wires to the 4.
  • Page 29 Installing the Remote Controller Outdoor Junction Box 5. Slide the box nut over the remote controller 1. Insert the remote controller wires through the wires and screw it onto the wall pipe. wall pipe and secure the wall pipe to the re- mote controller.

This manual is also suitable for:

Nrc83-od

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