Noritz EZ111DV Owner's Manual

Condensing tankless gas water heater

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CONDENSING TANKLESS GAS WATER HEATER

Models: EZ111DV

EZ98DV

EZ71DV

(Example of EZ111DV (GQ-C3261WX-FF US))

FOR USE IN RESIDENTIAL 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.

NORITZ America Corporation

Owner's Guide

(GQ-C3261WX-FF US)

(GQ-C2861WX-FF US)

(GQ-C2661WX-FF US)

If the information in this manual is not followed exactly, a fire or explosion can result

causing property damage, personal injury, or loss of life.

• 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.

NRCR111DV

NRCR92DV

Thank you for purchasing this Noritz tankless gas water heater.

Before using:

• Read this manual completely for operation instructions.

• (When a remote controller (RC-9018M) is installed) Please

also read the information on how to operate the remote

controller provided in the remote controller user's manual.

• To ensure full coverage by the Noritz America Limited

Warranty service, see the warranty registration information

(see page 30), and then visit the Noritz website (www.

noritz.com/warranty) to register your product.

• Keep this manual where it can be found whenever necessary

because the warranty registration information is included.

(See page 30)

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.

SBB81HC

Rev. 01/24

(GQ-C3261WXQ-FF US)

(GQ-C2661WXQ-FF US)

• Installation and service

must be performed

by a qualified installer,

service agency or the gas

supplier.

Low NOx Approved by SCAQMD

14 ng/J or 20 ppm

(Natural Gas Only)

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Summary of Contents for Noritz EZ111DV

Page 1 (GQ-C2861WX-FF US) (GQ-C2661WXQ-FF US) EZ71DV (GQ-C2661WX-FF US) Thank you for purchasing this Noritz tankless gas water heater. Before using: • Read this manual completely for operation instructions. • (When a remote controller (RC-9018M) is installed) Please also read the information on how to operate the remote controller provided in the remote controller user’s manual.
Page 2 Important Safety DANGER Information Vapors from flammable liquids will explode and catch fire causing death or severe burns. Do not use or store flammable products such as gasoline, solvents or adhesives To prevent damage to property and injury to the in the same room or area near the water user, the icons shown below will be used to warn of heater.
Page 3 3. Turn off gas and water supply valves. exhaust vent terminal. 4. Call the nearest Noritz agent. Do not install this water heater in a Explosion Hazard; recreational vehicle or on a boat as this may If the temperature and pressure relief valve be a carbon monoxide poisoning hazard.
Page 4 Consult the nearest Noritz agent if the water other reproductive harm. This product may heater location needs to be changed. contain such substances, be their origin from...
Page 5 This may cause damage or failure. If the water supply is in excess of 12 gpg Contact Noritz before using with a solar pre- (200 mg/L) of hardness, acidic or otherwise heater. impure, treat the water with approved...
Page 6 Contents About the Water Heater Important Safety Information ....2 This illustration shows an example of installation. Contents ..........6 The exact installation configuration may be slightly different. About the Water Heater ....... 6 Initial Operation ........8 1. Intake Pipe 7.
Page 7 (Example of NRCR models, direct vent installation) Outdoor Installation (Example of EZ models) Outdoor Vent Cap (VC-6-1) Display Window Indicate the status of water heater or error codes. * Best viewed directly in front of the water heater as the display angle is limited. •...
Page 8 Initial Operation The condensing tankless gas water heater discharges condensate. When heat from the exhaust gas is collected within the secondary heat exchanger, condensation occurs from moisture in the exhaust gas and the resulting water is discharged Before the first use, do the following: from the condensate drain pipe (approximately 2 gallons/h (7.5 L/h) maximum).
Page 9 This page is intentionally left blank.
Page 10 • Connect the equipment into an outlet on a trademarks owned by Bluetooth SIG, Inc. and any circuit different from that to which the receiver use of such marks by NORITZ is under license. Other is connected. trademarks and trade names are those of their •...
Page 11 iPhone®/iPad® NOTE • When a dialog such as “Allow EZ • iOS 15.0 or later Start Plus to ..” is displayed, select • Resolution: “Allow only while using the app”, Smartphone Tablet “Allow”, etc. Min. 750 × 1,334 1,536 × 2,048 •...
Page 12 How to Use EZ Start Plus Heater Information Terms of Use Unit Operation History Allows you to view product Displays Terms of Use. Displays app activity history. information. Register Warranty About Application FAQs Redirects you to the Register Warranty Redirects you to the FAQ site.
Page 13 Using the Water Heater *1: • Displayed on NRCR models (except for when in on- demand mode) and the units that are set to control the recirculation pump. • When “Recirculation menu is displayed in unit #1” is displayed, connecting to the other water heater enables recirculation operation.
Page 14 (cancel) from the “MENU” NOTE • Consult local codes for minimum on the RC-9018M. operating temperatures. • Noritz recommends that water temperature is set as low as possible to prevent scale build-up in the heat exchanger. Using the Water Heater / About the Recirculation...
Page 15 When the RC-7651M-A 6. Temperature Setting (Example of 120°F) • The setting temperature displayed may vary Remote Controller Is from the actual temperature at the fixture depending on conditions such as season or Installed length of piping. • When high temperature is set, blink for 10 second.
Page 16 Muting the Remote Controller 5. Turn off the hot water when the alarm sounds to prevent overfilling. The remote controller will emit a sound when any NOTE • The hot water filling temperature button is pressed. This sound can be muted if it is is same as the setting desired.
Page 17 NOTE If the water heater or the piping is covers. If there remains a freezing risk, contact frozen, do not use the water heater or the nearest Noritz agent. it may get damaged. Take the measures below for extremely cold temperatures*.
Page 18 If the water heater will not be used for a 6. Fully open all hot water fixtures/faucets. long period of time, drain the water. Hot water fixture/faucet 7. • For EZ models Open all drain plugs and drain the water out of WARNING the water heater.
Page 19 Manual Draining 4. Open a hot water fixtures/faucets to confirm that water is available, and then close the hot water fixtures/faucets again. 1. Close the gas valve. 5. Open the gas supply valve. 6. Connect power to the water heater. Do not touch with wet hands.
Page 20 Regular Maintenance Check : A [When supplying combustion air from the indoors] For smear or blockage with dust, oil, etc. at the air supply vent. If blocked, remove the build-up with a vacuum cleaner or damp towel. Periodic Inspection NOTE Do not completely remove the inlet screen and the air screen.
Page 21 discoloration, deformation, (For NRCR models) scratches or cracks may occur. • The remote controller is water O-ring resistant but not water proof. Keep it as dry as possible. Water drain valve with water filter Water Drain Valve (with Water Filter) Filter in the hot Filter in the cold water return...
Page 22 1-866-766-7489) • Damage to the water heater as a result of below When the app starts, “New version is available.” is not covered by the Noritz America Limited is displayed. Warranty. To ensure full warranty coverage, treat • App update is required. Tap “OK” to update the or condition water that exceeds the target levels app from the store.
Page 23 Display Window Water takes time to become hot when turning the hot water fixture/faucet. • Have you allowed enough time for the cold water in the pipes to drain out? The surface of the display window on the water The water is too hot. heater has torn, peeled, or air bubbles inside.
Page 24 Amount of Hot Water Hot Water Delivery (NRCR models only) (When a remote controller is installed) The amount of hot water in the tub is less/more Hot water is taking too long. than the set amount. • (“Auto Timer” is selected in “Recirculation •...
Page 25 Action : • Check return line filter. cold day. • Check the crossover valve’s filter. • This is normal. The white smoke is actually • Contact Noritz America if there are any steam. other questions. The hot water is turbid.
Page 26 First follow the instructions in the troubleshooting Contact Noritz America for additional section. (See page 22) information about recommended If the error is not corrected, contact Noritz America maintenance procedures (1-866-766- Technical Support at 1-866-766-7489. 7489). We will need to know: •...
Page 27 Gas Conversion Connector the unit will be necessary. This connector is including in only • This work must be performed by Noritz or a CK-85 to convert from Natural Gas to qualified installer, service agency, or the gas Propane.
Page 28 Specifications • Specifications may be changed without prior notice. • The capacity may differ slightly, depending on the water pressure, water supply, piping conditions, and water temperature. Item Specification EZ111DV EZ98DV EZ71DV Model Name (GQ-C3261WX-FF US) (GQ-C2861WX-FF US) (GQ-C2661WX-FF US)
Page 29 Item Specification NRCR111DV NRCR92DV Model Name (GQ-C3261WXQ-FF US) (GQ-C2661WXQ-FF US) Installation Indoor / Outdoor Wall mounted Type Air Supply / Exhaust Power Vented Ignition Direct Ignition 15-150 psi Operating Pressure (Recommended 50 to 80 psi for maximum performance) Minimum Activation Flow Rate* 0.4 GPM (1.5 L/min) Minimum Operating Flow Rate* 0.26 GPM (1.0 L/min)
Page 30 “Warranty Period” for the particular Product component as shown below. The date of Proper Installation must be provided to Noritz as well as a copy of the original receipt for the purchase of the Product to establish the Warranty Effective Date.
Page 31 4. What is Not Covered by this Warranty Please refer to the Installation Manual and Owner’s Guide supplied with your new Noritz Product. In addition, this Warranty becomes null and void if any of the following are determined to be contributing factors to failure of the Product under this Warranty: •...

This manual is also suitable for:

Nrcr111dv Ez98dv Nrcr92dv Ez71dv Gq-c3261wx-ff us Gq-c3261wxq-ff us ... Show all