Noritz NR71-SV Owner's Manual
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Noritz NR71-SV Owner's Manual

Tankless gas water heater
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TANKLESS GAS WATER HEATER
Owner's Guide
* FOR USE IN RESIDENTIAL, COMMERCIAL, 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.
CERTIFIED
R
Low NOx
Approved by
SCAQMD
Accepted For Use
City of New York
Department of Buildings
MEA 19-03-E
SBA8344
Rev. 09/09
Models: NR71-SV
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.
Completely fill out the warranty registration card (included separately) and
mail the detachable portion to Noritz America Corporation.
Keep this manual (and the remainder of 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.
When applicable, installation must conform with the Manufactured Home Construc-
tion and Safety Standard, Title 24 CFR, Part 3280 or the Canadian Standard CAN/
CSA-Z240 MH Mobile Homes, Series M86.(NR71-OD, NR66-OD only)
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
NR71-OD*
NR66-SV
NR66-OD*
*SBA8344*

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Summary of Contents for Noritz NR71-SV

  • Page 1 Read this manual completely for operation instructions. CERTIFIED Completely fill out the warranty registration card (included separately) and Low NOx mail the detachable portion to Noritz America Corporation. Approved by Keep this manual (and the remainder of the warranty registration card) where it SCAQMD can be found whenever necessary.

  • 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 (Continued) [NR71-SV, NR66-SV] [NR71-OD, NR66-OD] Do not use the water heater if Do Not Install Indoors. the exhaust pipe is displaced, Prohibited Prohibited has holes, is clogged or is corroded. This will cause carbon monoxide poisoning and Indoor a potential fire hazard.
  • Page 4 Left side: gas on the rating plate. Be sure Min. 6" Right side: to do. Min. 6" Ex. For Natural Gas NR71-SV Front: Sug. 24" NR71-SV [When installing indoors (NR71-SV, NR66-SV)] 180,000 BTU 25,000 BTU Sug. 3" from 10.5...
  • Page 5 (Continued) Do not use hair spray or spray Contact Noritz before using with detergent in the vicinity of the a solar pre-heater. heater. Prohibited Be sure to do. Do not allow small children to play California Proposition 65 lists chemical unsupervised in the bathroom.
  • 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. 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.

  • Page 7: Table Of Contents

    Contents Important Safety Information ............... 2 Contents ......................7 General Parts Main Unit ....................8 Remote Controller ..................9 Initial Operation ................... 10 How to Use (Not using the remote controller) Setting and Using the Water Heater ............11 How to Use (Using the remote controller) Setting and Using the Water Heater ............

  • Page 8: General Parts

    General Parts Main Unit NR71-SV, NR66-SV Indoor/Outdoor Wall Mounted, Power Vented Model Flue Collar Front Cover Air Inlet Water Drain Valve (with Water Filter) (Inside Water Inlet) p.21) Pressure Relief Valve Water Supply Valve Gas Supply Valve (Ex. NR71-SV) NR71-OD, NR66-OD...

  • Page 9: Remote Controller

    Remote Controller (RC-7649M) <Optional> The illustration below shows the remote controller display. 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.

  • Page 10: 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. NR71-SV)

  • Page 11: How To Use (Not Using The Remote Controller)

    How to Use (Not using the remote controller) Setting and Using the Water Heater The factory temperature setting is 120°F (fixed). Mix with cold water with a mixing valve or at the fixture for desired temperature. Check that electrical power is connected. Turn on hot water.

  • Page 12: How To Use (Using The Remote Controller)

    How to Use (Using the remote controller) 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 control thermostat. Previous set temperature (Ex.: 110°F) DANGER To prevent scalding: High Temperature Hot Water Heater temperatures over 125°F can cause severe burns instantly or death from scalding.
  • Page 13 Set temperature. Turn off the hot Turn on hot Always check the water. water. temperature setting before use. Cold Check the indicator lights. Water temperature The temperature settings below are examples. The temperature setting °F : necessary depends on the usage, the length of piping and the time of year. The maximum output tempera- Contact the installer or Noritz ture can be set using the re-...

  • Page 14: Flow Meter Alarm

    How to Use (Using the remote controller) Flow Meter Alarm (Starting with the power off) Set temperature. Press the Power Preparation Always check On/Off Button temperature setting before use. Plug the bath drain. Cold The temperature will be displayed on the remote control thermostat. Check the indicator lights.
  • Page 15 Water Temperature An alarm will sound for ten seconds when the flow The temperatures settings below are only examples. The °F : temperature setting necessary will depend on the usage, reaches the set level. the length of piping and the time of year. Warm Warmer The water will continue to run unless it is...

  • Page 16: Muting The Remote Controller

    How to Use (Using the remote controller) 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.

  • Page 17: Adjusting The Maximum Output Temperature

    How to Use (Using the remote controller) 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.

  • Page 18: Preventing Damage From Freezing

    Preventing Damage from Freezing CAUTION * Damage can occur from frozen water within the device and pipes even in warm environments. Be sure to read below for appropriate measures. * Repairs for damage caused by freezing are not covered by the warranty. Freezing is prevented within the device automatically by the freeze-prevention heater Freezing cannot be prevented when the power plug is unplugged.

  • Page 19: Turning The Unit Back On

    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 Drain water into a bucket to prevent water damage.

  • Page 20: Regular Maintenance

    Check pressure relief valve. For water leaks from the Check equipment and piping. (Ex. NR71-SV) Periodic Maintenance Equipment Wipe the outside surface with a wet cloth, then dry the surface. Use a neutral detergent to clean any stains. Remote Controller Wipe the surface with a wet cloth.

  • Page 21: Periodic Maintenance

    8. Open the water supply valve and check that water does not leak from the drain plugs or water drain valve (with water filter). Water Supply Valve (Ex. NR71-SV) Optional Maintenance Isolation Valves * Isolation valves may be purchased as an accessory from Noritz.

  • Page 22: Troubleshooting

    Troubleshooting-1 Initial Operation Unit does not attempt to ignite • Check for reversed plumbing or crossed pipes. when water is running. • Check the water drain valve filter. ( p.21) • Reset unit and try again. There may be air in the gas line. Unit attempts to ignite but fails •...

  • Page 23: Amount Of Hot Water

    NR66-SV, NR66-OD is 5.3 GPM at a 45°F temperature rise. The maximum flow available from the NR71-SV, NR71-OD is 6.3 GPM at a 45°F temperature rise. • Pressure fluctuations and other plumbing conditions can cause the temperature and pressure at a fixture to be unstable, but it should stabilize after a short time.

  • Page 24: Remote Controller

    Troubleshooting-2 Remote Controller • Has there been a power failure? The light on the power button • Is the power connected properly? does not come on. 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: Water Quality

    åÃè·ï\é¶ÇÇ®í≤Ç◊Ç≠ÇæÇ≥Ç¢ åÃè·ï\é¶ÇÇ®í≤Ç◊Ç≠ÇæÇ≥Ç¢ Water Quality Damage to the water heater as a result Total Hardness* : 200 mg/L (12 gpg) or less of poor water quality is not covered by Aluminum : 0.05 to 0.2 mg/L or less the Limited Warranty. To ensure full Chloride : 250 mg/L or less warranty coverage, treat or condition...
  • Page 26 Check for an Flashing Light on the Unit <Not using the remote controller> [Error displays on the lamp] (NR71-SV and NR71-OD only) If there is a problem with the unit, a lamp will flash on the front of the unit.

  • Page 27: Follow-Up Service

    Follow-up Service-1 Requesting Service First follow the instructions in the troubleshooting section ( p.22 to p.26). If the error is not corrected, contact Noritz America Technical Support at 866-766-7489. We will need to know: The Model ....(check the rating plate) *See p.4 for the location of the label Date of purchase ..

  • Page 28: Gas Conversion

    Do not proceed if this equipment is not immediately available. Manifold Plate O-Ring Damper (NR71-SV only) Conversion Kit Label After the necessary parts have been replaced on the unit, the remote controller is then used to adjust the settings on the water heater for use with the proper gas type.

  • Page 29: Specifications

    • The capacity may differ slightly, depending on the water pressure, water supply, piping conditions, and water temperature. Specifications Specification Item Model Name NR71-OD NR71-SV Outdoor, Wall Mounted Installation Indoor/ Outdoor, Wall Mounted Type Power Vented Air Supply/Exhaust Power Vented...
  • Page 30 Specifications-2 Specifications Specification Item Model Name NR66-OD NR66-SV Installation Indoor/ Outdoor, Wall Mounted Outdoor, Wall Mounted Type Air Supply/Exhaust Power Vented Power Vented Ignition Direct Ignition Operating Pressure 15-150 psi Minimum Flow Rate 0.5 GPM Dimensions 20.5"(Height) x 13.8"(Width) x 6.7"(Depth) Weight 36 lbs.

This manual is also suitable for:

Nr71-odNr66-svNr66-od

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