Noritz EcoTOUGH NRC661A-DV Installation Manual
  1. Manuals
  2. Brands
  3. Noritz Manuals
  4. Water Heater
  5. EcoTOUGH NRC661A-DV
  6. Installation manual

Noritz EcoTOUGH NRC661A-DV Installation Manual

Condensing tankless gas water heater
Hide thumbs Also See for EcoTOUGH NRC661A-DV:
Table of Contents

Advertisement

Quick Links

Download this 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
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
Low NOx Approved by SCAQMD
14 ng/J or 20 ppm
(Natural Gas Only)
SBB806U-2
Rev. 08/15
NRC711-DV
(Indoor Installation)
NRC661A-DV
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 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.
(Indoor Installation)
Ground
NORITZ AMERICA
CORPORATION
Be sure to do
*SBB806U*

Advertisement

Table of Contents
loading

Related Manuals for Noritz EcoTOUGH NRC661A-DV

Summary of Contents for Noritz EcoTOUGH NRC661A-DV

  • Page 1 14 ng/J or 20 ppm 3280 or the Canadian Standard CAN/CSA-Z240 MH Mobile (Natural Gas Only) 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. SBB806U-2 Rev. 08/15...

  • Page 2: Included Accessories

    Included Accessories The following accessories are included with the unit. Check for any missing items before starting installation. Part Shape Q’ty Part Shape Q’ty Owner's Guide, Warranty, Anchoring Screw Installation Manual 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 DANGER Checkup • Check the fixing brackets and vent pipe yearly for damage or wear. Replace if necessary. WARNING Precautions on Vent Pipe Replacement • The vent system will almost certainly need to be replaced when this appliance is being installed. Only use vent materials that are specified in this Installation Manual for use on this appliance.

  • Page 4: Choosing Installation Site

    Choosing Installation Site * Locate the appliance in an area where leakage from the unit or connections will not result in damage to the area adjacent to the appliance or to the lower floors of the structure. When such installation locations cannot be avoided, a suitable drain pan, adequately drained, must be installed under the appliance.
  • Page 5 Contact local utilities for code requirements in your area or call: 1-866-766-7489 and request instructions. The Commonwealth of Massachusetts: The water heater can be used for hot water only and not in a combination of domestic and space heating. For Venting Manufacturers Requirements, see websites listed below: Noritz N-Vent www.noritz.com...

  • 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 <When supplying combustion air from the outdoors (Direct Vent)> * 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.
  • Page 8 Clearance Requirements from Vent Terminations to Building Openings <When supplying combustion air from the indoors (Non-Direct Vent)> * 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.
  • Page 9 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 10 Filling the condensate trap with water When initial start up, make sure that you perform the following procedures. DANGER This is to prevent dangerous exhaust gases from entering the building. Failure to following procedure could result in severe personal injury or death. After installing the drain pipe, make sure that the area around the unit is well ventilated;...

  • Page 11: Vent Pipe Installation

    Vent Pipe Installation (Indoor Installation Only) WARNING CARBON MONOXIDE POISONING Follow all vent system requirements in accordance with relevant local or state regulation, or, in the absence of local or state code, in the U.S. to the National Fuel Gas Code ANSI Be sure to do Z233.1/NFPA 54 –...
  • Page 12 Maximum Vent Length Adjustment DIP switch The unit can be adjusted to accommodate longer vent runs; refer to the below table to find the maximum vent length based on the number of elbows. Adjust the DIP switch according to the vent condition noted in the tables below.
  • Page 13 Venting With PVC or CPVC This appliance can be vented with non cellular core plastic pipe materials as specified in the below table. Vent installations in Canada which utilize plastic vent systems must comply with ULC S636. Item Material United States Canada Schedule 40 PVC ANSI/ASTM D1785...
  • Page 14 Vent Pipe Installation Horizontal Vent Termination- PVC/CPVC Materials Only • As illustrated on the left, make sure to keep a distance of 3' (0.9m) or wider between the intake and exhaust when installing the vent piping. Hanger Insert Bird Screen* * If 3’...
  • Page 15 Horizontal Vent Termination- 3" (75mm) Concentric PVC/CPVC Termination • The concentric termination may be shortened, but not lengthened from its original factory supplied length. Hanger The concentric termination may only be used Intake Straps for horizontal terminations. 1" (25mm) to Strap •...
  • Page 16 Vent Pipe Installation Horizontal Vent Termination- PVC/CPVC Materials Only * When 3’ (0.9m) remote distance between Intake and Exhaust cannot be ensured. * Can not use Hood termination (PVT-HL) • Intake and exhaust should face the same direction. Intake and exhaust should keep the same 5.9”...
  • Page 17 Vent Pipe Installation (When supplying combustion air from the indoors (SV, non-direct vent)) DANGER When installing this water heater in an area with a large amount of lint such as a commercial Laundromat, direct-vent ("-DV") system must be used. The "-SV" configuration (using an SV conversion kit) is prohibited. When installing this water heater in a mobile home, all combustion must be drawn directly from the outdoors.
  • Page 18 Supply combustion air to the units as per the National Fuel Gas Code, ANSI Z223.1 Combustion Air and in Canada, in accordance with the Natural Gas and Propane Installation Code CSA B149.1. • Provide two permanent openings to allow cir- culation of combustion air. 9" (225mm) • Make each opening 180 square inches if they provide indoor air, and 100 square inches for 20" (500mm) outdoor air.

  • Page 19: Gas Piping

    Gas Piping Follow the instructions from the gas supplier. CAUTION The guidelines and examples we have provided in this manual section are for reference only. The sizing and installation of the gas system for this water heater, as with any gas appliance, is the sole responsibility of the installer. 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. Gas Conversions If the gas type supplied does not match the gas type on the rating plate, contact your water heater supplier for a replacement unit with the proper gas type. If a gas type conversion must be made, there are conversion kits available for some models. [The conversion kit shall be installed by a qualified service agency in accordance with the manufacturer’s instructions and all applicable codes and requirements of the...
  • Page 20 • For NG installations with the initial supply pressure at point of delivery (at the meter, for example) is less than 8” WC, use the 0.5” WC pressure drop table (Table 1). • For NG installations with the initial supply pressure at point of delivery is greater than or equal to 8” WC, use the 3.0” pressure drop table (Table 2). • For all LP installation use (Table 3) The inlet pressure must be at least 5” WC for NG or 8” WC for LP for all appliances in the gas system. If the inlet gas pressure drops below 5” WC for NG or 8” WC for LP, the heater may continue to operate, but the other appliances in the house may experience flame loss or ignition failure, which can result in gas leakage into the home. 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 21 BTU/Cubic Foot ratings. For simplification of your calculations, 1 Cubic Foot of Gas is approximately equivalent to 1000 BTU. Sample Gas Line Instructions Noritz Condensing Tankless Gas Water Heater 1. Size each outlet branch starting from the furthest (NRC711-DV series : 157,000 Btuh) using the Btuh required and the length from the meter.
  • Page 22 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 23: 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. It cannot be used for space heating applications only. Do not use this appliance if any part has been underwater. Immediately call a qualified service technician to inspect the appliance and replace any part of the control system and gas control which has been under water.
  • Page 24 • The freeze prevention heaters will not prevent the plumbing external to the unit from freezing. Protect this plumbing with insulation, heat tape or electric heaters, solenoids, or pipe covers. • In order for the freeze prevention heaters to operate, the water heater must have power at all times. Damage to the water heater as a result Total Hardness* : 200 mg/L (12 gpg) or less of the below is not covered by the Noritz Aluminum : 0.05 to 0.2 mg/L or less America Limited Warranty. Chloride : 250 mg/L or less •...

  • Page 25: Water Treatment System

    "* will flash in the Display Window. When the error code " "* is displayed, the Heat Exchanger needs to be flushed to prevent damage from Scale Build-up. Refer to the "Procedure for flushing the Heat Exchanger" on page 26 or contact Noritz America for more information. (http://support.noritz.com/ or 866-766-7489) * = 1, 2, 3, 4, F...
  • Page 26 Heat Exchanger must be flushed. is set to "Flushing Mode". from an authorized Noritz wholesaler.
  • Page 27 located...

  • Page 28: 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. The water heater incorporates a collection and removal system which must be properly drained in order to ensure proper operation of this appliance. •...
  • Page 29 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 30: Plumbing Applications

    Combination Potable Water and Space Heating System If the Air Handler does not control the water flow automatically, the Scale detection feature will not work. 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 31: 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. In Canada, the latest CSA C22.1 Electrical Code. Caution: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improp- er and dangerous operation. Verify proper operation after servicing. Field wiring to be performed at time of appliance installation. WARNING Electrical Shock Hazard Do not turn power on until electrical wiring is finished. Disconnect power before servicing. Failure to do so may result in death or serious injury from electrical shock. • Do not let the power cord contact • The electrical supply required by the water heater is the gas piping.
  • Page 32 * High temperature. 120 F (50 C) 130 F (55 C) 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. 37). * Only one remote controller can be connected to the water heater. A malfunction may occur if two or more remote controllers are connected. * The water heater has been factory set to allow a maximum temperature setting of [120 °F / 50 °C].
  • Page 33 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. • Use a Y type terminal with a resin sleeve. (Without the sleeve, the copper wire may corrode and cause problems).

  • Page 34: 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. • If the flame does not appear normal, the burner may need to be cleaned. •...

  • Page 35: 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. Do not try to light the burner by hand. 1. Read the safety information in the installation manual or on the side of the water heater. 2. Turn off all electrical power to the unit. 3. Do not attempt to light the burner by hand. 4. Turn the gas control manual valve (external to the unit) clockwise to the off position. 5.

This manual is also suitable for:

Ecotough nrc711-dv

Table of Contents