Noritz NRC711-OD Installation Manual
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Noritz NRC711-OD Installation Manual

Noritz NRC711-OD Installation Manual

Condensing tankless gas water heater
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Download this manual See also: Service Manual, Owner's Manual
Installation Manual
CONDENSING 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
If the information in this manual is not followed exactly, a fire or explosion may result
WARNING:
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.
SBB8068
Rev. 01/14
NRC711-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
Low NOx
Approved by
SCAQMD
14 ng/J or 20 ppm
(Natural Gas Only)
(Outdoor Installation)
Ground
FOR USE IN RESIDENTIAL 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 Pro-
pane Installation Code (NSCNGPIC).
Noritz America reserves the right to discontinue, or change at
any time, the designs and/or specifications of its products with-
out notice.
NORITZ AMERICA
CORPORATION
Be sure to do
*SBB8068*

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Summary of Contents for Noritz NRC711-OD

  • Page 1 54- latest edition and/or CSA B149.1, Natural Gas and Pro- pane Installation Code (NSCNGPIC). Low NOx Approved by Noritz America reserves the right to discontinue, or change at any time, the designs and/or specifications of its products with- SCAQMD out notice.

  • Page 2: Included Accessories

    The following accessories are included with the unit. Included Accessories Check for any missing items before starting installation. Shape Shape Part Q’ty Part Q’ty Owner's Guide, Warranty, Cross Recessed Installation Manual Head Screw each (this document) The accessories listed below are not Optional Accessories included with the units, but may be necessary for installation.

  • Page 3: Before Installation

    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 157,000 Btuh. Check the Power • The power supply required is 120VAC, at 60Hz. May result in fire or electric shock.
  • Page 4 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. Using the incorrect voltage may result in fire or cracking. Prohibited •...

  • Page 5: 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 6 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. Vent Terminal Area Where Terminal is Not Permitted Air Supply Inlet US Non-Direct Vent Description Installations Clearance above grade, veranda, porch,...

  • Page 7: 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 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 8: Gas Piping

    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.
  • Page 9 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 10 BTU/Cubic Foot ratings. For simplification of your calculations, 1 Cubic Foot of Gas is approximately equivalent to 1000 BTU. Sample Gas Line Instructions 1. Size each outlet branch starting from the furthest Noritz Condensing Tankless Gas Water Heater using the Btuh required and the length from the meter. Barbecue (157,000 Btuh) 2.
  • Page 11 Table 3. Maximum Undiluted Propane (LP) Delivery Capacity in Thousands of BtuH (0.5” WC Pressure Drop) Length (including fittings) Pipe 100' 125' 150' 200' Size (3m) (6m) (9m) (12m) (15m) (18m) (21m) (24m) (27m) (30m) (38m) (45m) (60m) 1/2" 3/4" 1"...

  • Page 12: Water Piping

    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 Supply water piping Hot water piping • Do not use PVC, iron, or any piping which has been • Do not use lead, PVC, iron or any piping which treated with chromates, boiler seal or other chemicals. has been treated with chromates, boiler seal or •...

  • Page 14: 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.

  • Page 15: 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 efficiency, fully condensing appliance which produces acidic condensate during operation.
  • Page 16 Condensate piping to floor drain Condensate piping with pump Display window Display window USE NON-CORROSIVE MATERIALS USE NON-CORROSIVE MATERIALS DO NOT REDUCE TO LESS THAN 1/2” DO NOT REDUCE TO LESS THAN 1/2” KEEP AS SHORT AS POSSIBLE KEEP AS SHORT AS POSSIBLE 1/2"...

  • Page 17: Plumbing Applications

    (Model L6006A or L6006C) Combination Potable Water and Space Heating System Notes: 1. Noritz recommends the use of an Isolation Kit with the installation. These kits include an integrated shut-off and service valve with unions and a pressure relief valve.

  • Page 18: Electrical Wiring

    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 19 135 F (57 C) 140 F (60 C) OFF= Check Check • Applicable Model Noritz Condensing Tankless Gas Water Heater * Remarks [125 °F / 55 °C] Celsius display mode RC-7651M Optional remote controller Fahrenheit display mode Install the optional remote controller according to the instructions in the Installation Guide (p. 24).

  • Page 20: Connecting Remote Controller Cord To Unit

    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 83' (25m) with 18AWG wire. •...

  • Page 21: Maintenance

    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. • The burner flame must be checked periodically for a proper blue color and consistency. •...

  • Page 22: Lighting Instructions

    WARNING A fire or explosion may result if these instructions are not followed, which may cause lose of life, personal injury or property damage. Lighting Instructions This water heater does not have a pilot. It is equipped with an ignition device that automatically lights the burner.
  • Page 23 GAS INLET HOT WATER OUTLET WATER DRAIN VALVE WATER DRAIN VALVE HEIGHT OF EACH FITTING CONDENSATE DRAIN (WATER FILTER) FROM BOTTOM OF CASE NRC711-OD (VIEW FROM TOP) CONDENSATE DRAIN 0.8" (20mm) 11.7" (297mm) HOT WATER OUTLET 1.8" (45mm) 10.0" (253mm) COLD WATER INLET 2.3"...
  • Page 24 For Installers: Read this installation guide Optional 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 25 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 26 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 remote controller.

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