Noritz EZ111DV Installation Manual

Condensing tankless gas water heater

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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

installation 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, 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.

CERTIFIED

Low NOx Approved by SCAQMD

14 ng/J or 20 ppm

(Natural Gas Only)

SBB80TB-3

Rev. 04/21

EZ111DV (GQ-C3259WX-FF US)

EZ98DV (GQ-C2859WX-FF US)

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

Ground

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.

NORITZ AMERICA

CORPORATION

Be sure to do

*SBB80TB*

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Summary of Contents for Noritz EZ111DV

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. SBB80TB-3 Rev. 04/21...
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) Remote Controller Remote Controller Cord (6ft (2m)) (See p.
Page 3 Part Shape Q’ty Part Shape Q’ty Noritz Connect 3"(75mm) Wireless Adapter Horitzontal NWC-ADAPTER Hood Termination (NAW-1 US) (PVT-HL) Neutralizer Plastic Rain Cap*** (NC-1) (PRC-1) (For 1 water heater) Remote Controller (RC-9018M) Note: Additional vent pieces are available; consult the latest product catalogue for details.
Page 4: 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 3-18" (75-457mm) apart from each other to ensure the cord will be able to reach between the units.
Page 5: Before Installation
-For gas conversion information, contact Noritz America. -For gas conversion information, contact Noritz America. ( (Pour I’ information de conversion de gaz, contact Noritz America.) Pour I’ information de conversion de gaz, contact Noritz America.) • Using this unit with a solar pre-heater can lead to unpredictable output temperatures and -Installations above 2000 ft(610m) require an adjustment.
Page 6: 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 7 1) This water heater can only be used in outdoor applications if the usage is restricted to summertime usage exclusively. 2) 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 8: 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 9: Outdoor Installation
Outdoor Installation Item Check Illustration • Maintain the following clearance from both combustible 24" (600mm) and non-combustible materials. or more 36" (900mm) or more 3" (75mm) or more • When installing the unit in a common side corridor, provide 47" (1,190mm) a clearance of 47"...
Page 10 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 11 Clearance Requirements from Vent Terminations to Building Openings <Other than 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 12: Installation
Installation • 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 13 Typical plumbing (Direction of the isolation valve) Intake Pipe Exhaust Pipe Water Supply Valve Pressure Relief Valve Water Drain Valve (with Water Filter) Elevation Adjustment Above 2,000ft • Adjust the DIP switches as illustrated in the table to the below if this water heater is installed at an altitude of 2000 ft.
Page 14: Venting The Water Heater
PVC, CPVC or PP has been approved for use on this System. To make a Common Vent System, optional appliance with zero clearance to combustibles. accessories are required. Contact Noritz America at http://support.noritz.com/ or 1-866-766-7489 for How to tighten the Vent Pipe details.
Page 15 Maximum Vent Length Adjustment DIP switches 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 switches according to the vent condition noted in the tables below.
Page 16 Venting With PVC, CPVC or PP Venting With PVC, CPVC or PP 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...
Page 17: Vent Pipe Installation
Vent Pipe Installation Horizontal Vent Termination - PVC/CPVC Material Only (when using PVT-HL termination) Ceiling Exterior Wall PVT-HL Hanger Straps Intake 3"(75mm) * 1' Minimum Exhaust Slope the Vent **2"×3" Increaser 3" (75mm) coupling Upward 12"(300mm) Exhaust Intake above grade or above snow line 3"...
Page 18 Vent Pipe Installation Alternate Horizontal Vent Termination- PVC, CPVC or PP Material * When 3’ (0.9m) distance between Intake and Exhaust cannot be ensured. * Can not use Hood termination (PVT-HL) * Insert the bird screen. 90° elbow vertical setting (downward). * Ensure at least 3ft (0.9m) or more distance between the near edge of the air intake pipe or exhaust pipe to the inside corner of a wall.
Page 19 PVC Concentric Termination - PVC/CPVC Material Only • The concentric termination may be shortened, but not lengthened from its original factory supplied length. • 2"(50mm) or 3" (75mm) PVC or CPVC pipe may be used with the concentric termination. Maintain the same vent pipe diameter from the water heater flue to the termination. •...
Page 20 Vertical Plastic Rain Cap* (PRC-1) PRC-1 *Not supplied with water heater, order separately. 3" (75mm) pipe 2"×3" increaser coupling Increaser coupling** 2" (50mm) pipe 12" (30cm) **Not supplied with water heater, order separately. 3" (75mm) pipe and 2"×3" increaser coupling requires when using PRC-1. PVC-2CT PVC-3CT*** Intake...
Page 21 Refer to page 28 for the location of the DIP switch bank. • SV Conversion kit SV-CK-2 is required for the air intake. • Noritz recommends to install a Carbon Monoxide Alarm in installation site of the unit when supplying combustion air from the indoors.
Page 22 • If combustion air will be provided through a duct, size the duct to provide as below. EZ111DV (GQ-C3259WX-FF US) : 70 cubic feet of fresh air per minute EZ98 (GQ-C2859WX-FF US) : 63 cubic feet of fresh air per minute •...
Page 23 Indoor Installation when using 2" flexible polypropylene 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 accordance with the National Fuel Gas Code ANSI Z223.1/NFPA 54 or Natural Gas and Propane Installation Code CSA B149.1.
Page 24 General Requirements Maximum Vent Lengths • Flex Vent 2" Conversion Kit (EZ2-CK) must be • Maximum Vent Length varies according used when using 2" flexible polypropylene pipe to Vent Kit model. for vent pipe installation. Refer to the instructions provided with Flex Vent 2" Conversion Kit for Check the Vent Kit model.
Page 25 2. Disconnect power and turn on DIP switches No.2 and 3. Refer to page 28 for the location of the DIP switch bank. The power must be unplugged when adjusting the DIP switch to switch the airflow amount. DIP switches No.2 and 3 are turned on. Maximum Vent Length Adjustment DIP switches when using 2"...
Page 26 WARNING This unit is suitable only for vertical vent. Vertical Vent Termination with Polypropylene N-Flex system • Terminate at least 3’ (0.9m) from the combustion air intake of any appliance and any other building opening. Storm Collar • Enclose exterior vent systems below Roof Flashing the roof line to limit condensation and...
Page 27 • If combustion air will be provided through a duct, size the duct to provide as below. EZ111DV (GQ-C3259WX-FF US) : 70 cubic feet of fresh air per minute EZ98DV (GQ-C2859WX-FF US) : 63 cubic feet of fresh air per minute •...
Page 28: Outdoor Installation
Outdoor Installation • When installing this water heater outdoors, must be used "Outdoor Vent Cap (VC-6-1 or VC-6)". • Disconnect power and then turn ON DIP switch #2 if outdoor installation. • Make sure the clearance of the water heater in accordance with page 9 (Outdoor Installation). Outdoor Vent Cap (VC-6-1 or VC-6) for outdoor installation Disconnect power to the water heater before changing...
Page 29: 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. 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.
Page 30 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 31 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 (180,000 or 199,900 Btuh) 2.
Page 32 Table 3. Maximum Undiluted Propane (LP) Delivery Capacity in Thousands of BtuH (0.5” WC Pressure Drop) [Schedule 40 Metallic Pipe] Length (including fittings) Pipe 100' 125' 150' 175' 200' Size (3m) (6m) (9m) (12m) (15m) (18m) (24m) (30m) (38m) (45m) (53m) (60m) 1/2"...
Page 33: Water Piping
Water Piping Installation and service must be performed by a qualified plumber. In the 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 34 : 200 mg/L (12 gpg) or less Damage to the water heater as a result Aluminum : 0.05 to 0.2 mg/L or less of the below is not covered by the Noritz Chloride : 250 mg/L or less America Limited Warranty.
Page 35: Water Treatment System
* # = 1, 2, 3, 4 ... 9 Damage to the water heater as a result of the items below is not covered by the Noritz America Limited Warranty. • Water in excess of 12 gpg (200mg/L) of hardness •...
Page 36 How to select the Service Reminder This water heater is equipped with an automatic service reminder to announce for flushing the Heat Exchanger. The factory default of this service reminder is OFF. The customer or installer needs to set the service reminder to ON or OFF.
Page 37 Damage to the water heater due to Scale Build-up is not covered by the water heater's warranty. To clear the alarm code “C1#*”, the Heat Exchanger must be flushed. If the alarm code “C *” is displayed and flashing on the Remote Controller, please contact Noritz America (866-766-7489).
Page 38 3. Clean the water heater with fresh water for 3 minutes or more. (Needs to have enough time to clean the water heater.) NOTE : If EZ98DV(GQ-C2859WX-FF US ) or EZ111DV(GQ-C3259WX-FF US) Water is installed, the unit has the “Water Drain Valve” from the Drain Valve bottom of the water heater.
Page 39 The Code “C00” goes out on the Remote Controller. 8. Close the Front Covers. 9. Open the gas supply valves and water outlet valves. 10. Check for correct operation of the water heaters. Please contact Noritz America if more information is needed for flushing. (Phone # : 866-766-7489)
Page 40: 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 41 Condensate piping to floor drain Condensate piping with pump DO NOT ADD DO NOT ADD ANY VALVES ANY VALVES 1/2" PVC pipe 1/2" PVC pipe 1/2" PVC elbow 3/8" ID tubing* Slope pipe downwards The end of the drain pipe 1/4"...
Page 42: 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 43: 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 44 Remote Controller • Applicable Model * Remarks [125 °F / 55 °C] Remote controller RC-7651M Celsius display mode Fahrenheit display mode Install the remote controller according to the instructions in the Installation Guide (p. 51). * Only one remote controller can be connected to the water heater. A malfunction may occur if two or more remote controllers are connected.
Page 45 Changing Other Features Adjusting the Temperature Display Note: The setting must be done within the first 10 minutes of connecting electrical power to the water heater. Table of Setting Items Item No. Item Choices (factory defaults shaded) Celsius / Liter °F / gal °C / L Fahrenheit / Gallon...
Page 46: 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 47 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 48: 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 49: Lighting Instructions
Press Max. or Min. Manifold Unit A Ignites Unit A Doesn't Ignite Pressure Set Button on Unit B Unit B Doesn't Ignite Unit B Ignites * If an 11 or F11 error code flashes on the remote controller, hit the Power Button on the remote controller off and on 2 -3 times.
Page 50 Dimensions < inch (mm) > 17.7" (450mm) 13.4" (340mm) 2.1" (53mm) HOT WATER OUTLET (3/4”) WATER DRAIN VALVE COLD WATER INLET (3/4”) WATER DRAIN VALVE (WATER FILTER) WALL MOUNTING BRACKET (INCLUDED ACCESSORY) 0.2" (5mm) 12.8" (325mm) 18.5" (471mm) 3.5" (88mm) 17.8"...
Page 51: For Installers
Remote Controller RC-7651M carefully before carrying out installation. Installation Guide NORITZ AMERICA CORPORATION 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 52: Installation
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 53: Remote Controller
● Refer to the Installation Manual provided with the water heat- er for complete installation details. Installation Guide NORITZ AMERICA CORPORATION In order to use this product safely, read this installation manual carefully and follow the installation instructions. ● Potential dangers from accidents during installation and use are described below.
Page 54 Included Parts List (The value in ( ) indicates the quantity.) Mounting Machine Raised countersunk Raised countersunk Remote Controller Wall anchor bracket screw head wood screw head screw (For junction box installation) Notes on the Installation Location Connection of Remote Controller Cord White Connector To Remote controller •...
Page 55 5. Attach the remote controller to the mounting 2. Remove the decorative frame from the remote bracket. Insert the bottom of the remote controller. (The remote controller is inserted controller into the groove at the bottom of the in the decorative frame.) bracket and push in the 2 hooks on top of the remote controller completely.
Page 56: Optional Remote Controller
Optional Remote Controller • Applicable Model * Remarks [125 °F / 55 °C] RC-9018M Remote controller Celsius display mode Fahrenheit display mode Install the remote controller according to the instructions in the Installation Guide. (p. 53). * Only one the remote controller can be connected to the water heater. A malfunction may occur if two or more remote controllers are connected.
Page 57 Changing Other Features Adjusting the Temperature / Water Quantity Display Note: The setting must be done within the first 10 minutes of connecting electrical power to the water heater. Table of Setting Items Item Choices (factory defaults shaded) Celsius / Liter °F / gal °C / L Fahrenheit / Gallon...
Page 59 Home Construction and Safety Standard, Title 24 CFR, Part 3280 or the (Natural Gas Only) 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. NORITZ America Corporation SBB80T9-2 Rev.
Page 60: 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 61 Be sure 1. Turn off the hot water supply. to do. will settle on the floor. 2. Turn off the power to the water WHAT TO DO IF YOU SMELL GAS. heater. • Do not try to light any 3. Turn off gas and water supply appliance. valve. • Do not touch any electrical 4. Call the nearest Noritz agent. switch; do not use any phone in your building. Explosion Hazard ; • Immediately call your gas If the temperature and pressure relief supplier from a neighbor’s valve is dripping or leaking, have a phone. Follow the gas supplier’s Prohibited instructions. qualified service technician replace it. • If you cannot reach your gas Do not plug or remove the valve. supplier, call the fire department. Failure to follow these instructions can re- C. Use only your hand to turn...
Page 62 Be sure the gas/power [Indoor Installation] supplied matches the Sug.3" (75mm) gas on the rating plate. Upper: Be sure from vent pipe* to do. Min. 12" (300mm) e.g.) EZ111DV(GQ-C3259WX-FF US) Left side: Right side: Min. 3" (75mm) Min. 3" (75mm) Front: Sug. 24" (600mm) [Outdoor Installation] Upper: Installation and service must be Min. 36" (900mm)
Page 63 This product may contain such substances, be their origin from fuel combustion (gas, oil) Do not touch the power or components of the product itself. cord with wet hands. Don’t touch Electric with a wet The gas conversion kit shall be installed by a Shock. hand. qualified service agency in accordance with the manufacturer’s instructions and all Consult the nearest Noritz agent if applicable codes and requirements of the the water heater location needs to authority having jurisdiction. The be changed. Be sure information in the instructions must be to do. followed to minimize the risk of fire or explosion or to prevent property damage, Contact a qualified service personal injury, or death. The qualified technician for any necessary service agency is responsible for the proper repairs, service or maintenance.
Page 64 Important Safety Information CAUTION Do not drink water that has been inside the This unit is only approved for installation unit for an extended period of time. Do not up to 4500 ft. (1350m) above sea level. drink the first use of hot water from the For installations at higher elevations, contact Noritz unit in the morning. America for Instructions. Clean the filter on the water inlet as Do not disassemble the remote controller. frequently as required by the quality of your local water. Do not use benzene, oil or fat detergents to clean the remote controller. Keep the area around the unit clean. This may cause deformation. If boxes, weeds, cobwebs, cockroaches etc. are in Do not get the remote controller wet. the vicinity of the unit, damage or fire can result.
Page 65: Table Of Contents
Contents Important Safety Information ............... 2 Contents......................7 Overview of Condensing Tankless Gas Water Heater ......8 General Parts Main Unit ....................9 Remote Controller ..................10 Initial Operation .................... 11 How to Use Setting and Using the Water Heater ............12 Flow Meter Alarm ..................14 Muting the Remote Controller ..............16 Adjusting the Maximum Output Temperature ........
Page 66: Overview Of Condensing Tankless Gas Water Heater
General Parts -1 Unit * This illustration shows an example of installation. The exact installation configuration may be slightly different. Indoor Installation (e.g. Direct vent installation) 1. Intake Pipe 5. W ater Drain Valve (with Water Filter) 2. Exhaust Pipe Inside Water Inlet ( p.36) 3. P ressure Relief 6. Front Cover Valve 7. Gas Supply Valve 4. W ater Supply Valve 8. Drain Pipe Discharge the condensate.
Page 67: Main Unit
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 from the drain pipe (approx. 2 gallons/hour (7.5 liters/ hour) maximum). It is not a water leak. Do not plug or block the drain line as it must always be allowed to freely flow. Note : The condensate discharged is acidic with a pH level of approximately 2-3.
Page 68: Remote Controller
General Parts -2 Remote Controller (RC-7651M) 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. Priority Indicator When this indicator is lit, the hot water temperature can be set.
Page 69: Initial Operation
Initial Operation Before the first use of your water heater, do the following: 1 through 4 Follow steps Open the water supply valve. OPEN CLOSED Open a hot water fixture to confirm that water is available, and then close the fixture again.
Page 70: How To Use
How to Use 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 (52°C) can cause severe burns instantly or death from scalding. • Children, disabled and elderly are at the highest risk of being scalded.
Page 71 * For most residential applications, the recommended setting temperature is 120°F (50°C in °C mode) or less. * Consult local codes for minimum operating temperatures. Note : Noritz recommends that water temperature is set as low as possible to prevent scale build-up in the heat exchanger.
Page 72: Flow Meter Alarm
How to Use Flow Meter Alarm If the flow meter alarm is being used to indicate when a tub is full: • If any hot water is being used besides what is going into the tub, the alarm will sound before the tub is full. •...
Page 73 Water Temperature An alarm will sound for ten °F : The temperatures settings below are only examples. The seconds when the flow temperature setting necessary will depend on the usage, the length of piping and the time of year. reaches the set level. Warm Warmer °C (°F) :...
Page 74: Muting The Remote Controller
How to Use 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. Sound Muted No sound...
Page 75: Adjusting The Maximum Output Temperature
How to Use 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. Down The upper limit of the hot-water supply temperature can be changed to...
Page 76: Preventing Damage From Freezing
* 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. If there remains a freezing risk, contact the nearest Noritz agent. Take the measures below for extremely cold temperatures*.
Page 77 Preventing Damage from Freezing-2 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.
Page 78 Preventing Damage from Freezing-3 Turning the Unit Back On 1. Check that all drain plugs are inserted. 2. Check that all hot water fixtures are closed. 3. Follow the procedure on p.11 “Initial operation”, steps 1 through 4. 4. Make sure that the area around the appliance is well ventilated; open a window or a door if necessary. Then, operate the unit and verify that condensate is coming out of the drain pipe.
Page 79: Regular Maintenance
Regular Maintenance-1 Periodic Inspection CAUTION To prevent burns or scalding, turn off the power button and wait until the equipment cools before performing maintenance. Be sure to do. Air Intake [When supplying combustion For water leaks from the Check air from the indoors] equipment and piping.
Page 80 Regular Maintenance-2 Periodic Maintenance Water Drain Valve (with Water Filter) If the water drain valve (with water filter) is covered with debris, the hot water may not run smoothly, or the unit may put out cold water. Check and clean the filter as explained below. * To avoid burns, wait until the equipment cools down before draining the water.
Page 81: Water Quality And Maintenance
When the code “C1#” is displayed, refer to the “How to select the Service Reminder” in the Installation Manual. Damage to the water heater as a result of below is not covered by the Noritz America Limited Warranty. To ensure full warranty coverage, treat or condition water that exceeds the target levels provided in this table.
Page 82: Troubleshooting
Troubleshooting-1 Initial Operation • Check for reversed plumbing or crossed pipes. Unit does not attempt to ignite when water is running. • Check the water drain valve filter. ( p.22) Unit attempts to ignite but fails • Reset unit and try again. There may be air in the gas line. •...
Page 83: Amount Of Hot Water
The amount of hot water at a • When hot water is demanded at other fixtures, the amount available may be reduced. The maximum flow available from EZ111DV (GQ-C3259 certain fixture is not constant. WX-FF US) is 8.7 GPM (33L/min.) at a 45°F (25°C) temperature rise.
Page 84 Troubleshooting-2 Remote Controller The light on the power button does • Has there been a power failure? not come on. • Is the power connected properly? 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 85 (Continued) The water appears blue • Coloration to a blue color may be noticed from small traces of copper ion contained in the water and fat The bath tub/wash-basin has turned (furring). However, there are not problems concerning blue health. Coloration of the bath tub/wash-basin can be prevented by cleaning frequently.
Page 86: Error Code
Condensate drain line may Check condensate drain line is clogged or frozen. be clogged. If the display continues, contact nearest Noritz agent. Abnormal combustion Contact the nearest Noritz agent. Service Reminder This unit is equipped with an automatic service reminder.
Page 87: Follow-Up Service
Period of Time for Stocking Repair Parts Noritz will stock repair and maintenance parts for this unit for the time period from the date of the original installation as follows: twelve (12) years for the heat exchanger and ten (10) years for remaining parts.
Page 88: Gas Conversion
This work must be performed by either Noritz or a qualified service agency and will be charged for even during the warranty period. The qualified installer will also be responsible for purchasing the gas conversion kit directly from the manufacturer.
Page 89: Specifications
• The capacity may differ slightly, depending on the water pressure, water supply, piping conditions, and water temperature. Specifications Item Specification Model Name EZ111DV (GQ-C3259WX-FF US) EZ98DV(GQ-C2859WX-FF US) Indoor / Outdoor Wall mounted Type Installation Air Supply/Exhaust Power Vented Direct Ignition...
Page 90 • Specifications may be changed without prior notice. • The capacity may differ slightly, depending on the water pressure, water supply, piping conditions, and water temperature. Performance Item EZ111DV (GQ-C3259WX-FF US) EZ98DV (GQ-C2859WX-FF US) Maximum Performance Maximum Performance 199,900 btuh...

This manual is also suitable for:

Ez98dv Gq-c3259wx-ff us Gq-c2859wx-ff us