Noritz EZ98DV User manual

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.

Contact Noritz America at 1-866-766-7489, if you have any questions or concerns.

CONDENSING TANKLESS GAS WATER HEATER

Installation Manual

Models : EZ111DV (GQ-C3260WX-FF US)

EZ98DV (GQ-C2860WX-FF US)

NORITZ America Corporation

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 Noritz America Limited Warranty.

• Check that the installation was done properly in

accordance with this Installation Manual upon

completion.

• After completing installation, either place this

Installation Manual and Owner’s Guide (the

warranty registration information included) 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. For the

warranty conditions and limitations, see the

Owner’s Guide.

CAUTION

If the information in these instructions is not

followed exactly, a fire or explosion may result

causing property damage, personal injury or

death.

• 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.

WARNING

Low NOx Approved by SCAQMD

14 ng/J or 20 ppm

(Natural Gas Only)

SBB8164-1

Rev. 11/20

Contents

1 Before Installation 3

2 About the Water Heater 5

2.1 Included Accessories ....................... 5

2.2 Optional Accessories ....................... 5

2.3 Specifications................................... 7

2.4 Dimensions ...................................... 8

2.5 External View................................... 10

3 Choosing an Installation Location 11

4 Installation Clearances 13

4.1 Indoor Installation ........................... 13

4.2 Outdoor Installation ........................ 14

4.3 For Quick Connect Multi-System..... 14

5 Installation of the Water Heater 15

5.1 Mounting the Water Heater

to the wall ........................................ 15

5.2 Elevation Adjustment Above

2,000 ft............................................. 16

5.3 Filling the condensate container

with water........................................ 16

6 Venting the Water Heater 17

6.1 Venting Installation Sequence......... 17

6.2 General Requirements..................... 17

6.3 Select a Vent Type............................ 23

6.4 Vent Pipe Installation

(Direct Vent)

.. 24

6.5 Vent Pipe Installation

(Non-Direct Vent) ............................ 30

6.6 Outdoor Installation ........................ 36

7 Connecting the Gas Supply 37

8 Connecting the Water Supply 41

8.1 Installation ....................................... 41

8.2 Water treatment.............................. 43

9 Connecting the Condensate Drain 45

10 Connecting Electricity 47

10.1 Water Heater ................................... 47

10.2 Remote Controller ........................... 47

10.3 Recirculation Pump.......................... 48

10.4 Quick Connect Cord-2 ..................... 49

Installation of the Remote Controller

11.1 General Requirements..................... 50

11.2 RC-7651M-A .................................... 50

11.3 RC-9018M ........................................ 52

12 Setting the DIP Switches 56

13 Trial Operation 57

14 Checklist After Installation 59

15 Plumbing Applications 61

16 Installation of the Quick Connect

Multi-System 63

17 Maintenance 64

17.1 Periodic Check ................................. 64

17.2 Procedure for Flushing the Heat

Exchanger ........................................ 65

Contents

1 Before Installation

Potential dangers from accidents during installation and use are divided into the following four categories.

Closely observe these warnings, they are critical to your safety.

Indicates an imminently hazardous situation which, if not avoided, will result in death

or serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in death

or serious injury.

Indicates a potentially hazardous situation which, if not avoided, may result in minor or

moderate injury.

Indicates a potentially hazardous situation which, if not avoided, may result in property

damage.

DANGER

WARNING

CAUTION

NOTICE

Checkup

Check the fixing brackets and vent pipe yearly for damage or wear. Replace if necessary.

DANGER

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.

Refer to the “Venting the Water Heater” section

for details. If PVC, CPVC, or Category IV listed pipe

is already installed, check for punctures, cracks,

or blockages and consult with the vent pipe

manufacturer before reusing.

If the flexible PP pipe is already installed, replace to

the new flexible PP pipe.

Improper venting may result in fires, property

damage or exposure to Carbon Monoxide.

Snow Precaution

If this product will be installed in an area where

snow is known to accumulate, protect the vent

termination from blockage by snow drifts or

damage from snow falling off of roofs.

Check the Gas

• Check that the rating plate indicates the correct

type of gas.

• Check that the gas supply line is sized for

199,900 Btu/h or 180,000 Btu/h.

199,900 Btu/h: EZ111DV (GQ-C3260WX-FF US)

180,000 Btu/h: EZ98DV (GQ-C2860WX-FF US)

Check the Power

The power supply required is 120 VAC, at 60 Hz.

Using the incorrect voltage may result in fire or

electric shock.

Use Extreme Caution if Using With a Solar Pre-

Heater

Using this appliance with a solar pre-heater can

lead to unpredictable output temperatures and

possibly scalding. To ensure outlet temperatures

do not exceed 120°F (49°C) at faucets, mixing valve

must be installed.

Do not use a solar pre-heater with the Quick

Connect Multi-System because the system may not

operate properly.

Precautions for Mobile Home Installation

• Verify that the gas supply type matches the gas

type listed on the rating plate. If a gas conversion

must be done, follow the instructions listed in

the gas conversion kit manual.

• If this product will be installed indoors, usage

of the SV conversion kit (SV-CK-2) and the Flex

Vent 2 in. Conversion Kit (EZ2-CK) are prohibited.

Make sure to follow all clearance and venting

requirements outlined in this manual.

Chemicals

This product can expose you to chemicals including

lead, lead compounds and carbon bisulfide which

are known to the State of California to cause

cancer, birth defects or other reproductive harm.

For more information go to

www.P65Warnings.ca.gov.

WARNING

e.g. EZ111DV (GQ-C3260WX-FF US)

Before Installation

• 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.

NOTICE

Do Not Use Appliance for Purposes Other Than

Those Specified

Do not use for other than increasing the

temperature of the water supply, as unexpected

accidents may occur as a result.

Check Water Supply Quality

If the water supply is in excess of 12 grains

per gallon (200 mg/L) of hardness, acidic or

otherwise impure, treat the water with approved

methods in order to ensure full warranty

coverage.

CAUTION

Please read if installing in Massachusetts

Massachusetts requires manufacturers of Side

Wall Vented products to provide the following

information from the Massachusetts code:

• A hard wired carbon monoxide detector with

an alarm and battery back-up must be installed

on the floor level where the gas equipment is to

be installed AND on each additional level of the

dwelling, building or structure served by the side

wall horizontal vented gas fueled equipment.

• In the event that the side wall horizontally vented

gas fueled equipment is installed in a crawl space

or an attic, the hard wired carbon monoxide

detector with alarm and battery back-up may be

installed on the next adjacent floor level.

• Detector(s) must be installed by qualified licensed

professionals.

• APPROVED CARBON MONOXIDE DETECTORS:

Each carbon monoxide detector shall comply with

NFPA 720 and be ANSI/UL 2034 listed and IAS

certified.

• SIGNAGE: A metal or plastic identification plate

shall be permanently mounted to the exterior of

the building at a minimum height of eight (8) ft

above grade directly in line with the exhaust vent

terminal for the horizontally vented gas fueled

heating appliance or equipment. The sign shall

read, in print size no less than one-half (1/2) in. in

size, “GAS VENT DIRECTLY BELOW. KEEP CLEAR

OF ALL OBSTRUCTIONS”.

• EXEMPTIONS to the requirements listed above:

- The above requirements do not apply if the

exhaust vent termination is seven (7) ft or more

above finished grade in the area of the venting,

including but not limited to decks and porches.

- The above requirements do not apply to a

product installed in a room or structure separate

from the dwelling, building or structure used in

whole or in part for residential purposes.

• This installation manual shall remain with the

product at the completion of the installation.

See the latest edition of Massachusetts Code

248 CMR for complete verbiage and also for

additional (non-vent related) requirements (248

CMR is available online). If your installation is NOT

in Massachusetts, please see your authority of

jurisdiction for requirements that may be in effect

in your area. In the absence of such requirements,

follow the National Fuel Gas Code, ANSI Z223.1/

NFPA 54 and/or CAN/CSA B149.1, Natural Gas and

Propane Installation Code.

Before Installation

Anchoring Screw (× 7)

Remote Controller (× 1)

[RC-7651M-A]

(See page 50)

Owner’s Guide, Installation Manual (this

document) (1 each)

Remote Controller Cord (6 ft (1.8 m)) (× 1)

Wall Mounting Bracket (× 1)

Quick Connect Cord (× 1)

[QC-2]

Remote Controller Cord (26 ft (7.9 m)) (× 1)

[RC-CORD26]

Isolation Valves (1 each)

(includes pressure relief valve)

Isolation valves are

necessary for flushing the

Heat Exchanger.

They allow for easy flushing

and troubleshooting of the

system.

PVC Concentric Termination (× 1)

2 in. (50 mm) : [PVC-2CT]

3 in. (75 mm) : [PVC-3CT]

2 in. SV Conversion Kit (× 1)

[SV-CK-2]

• 90° Elbow

(With Inlet Screen)

• 2 in. × 3 in. Increaser

coupling

• 2 in. Pipe

• Installation Manual

(Check List)

Outdoor Vent Cap (× 1)

[VC-6]

2 About the Water Heater

The following accessories are included with the

Water Heater.

Check for any missing items before starting

installation.

The accessories listed below are not included

with the Water Heater, but may be necessary for

installation.

2.1 Included Accessories 2.2 Optional Accessories

NOTE Additional vent pieces are available;

consult the latest product catalogue

for details.

About the Water Heater

Flex Vent 2 in. Conversion Kit

[EZ2-CK]

Flex Vent 2 in. Kit – 25 ft

[EZ2FVK-1]

Flex Vent 2 in. Kit – 35 ft

[EZ2FVK-2]

Flex Vent 2 in. Kit – 35 ft*

[EZ2FVP35-3]

(*Including only flex pipe)

During the installation of

Flex Vent 2 in. Kit, ambient

temperatures must be

greater than 40°F (5°C).

Afterwards, installation

site ambient temperature

must be greater than -4°F

(-20°C). Flex vent pipe

breakage may occur if these

temperature requirements

are not observed.

Remote Controller (× 1)

[RC-9018M]

(See page 52)

Noritz Recirculation System

[RPK-EXT]

Bird Screen for 2 in. (50 mm) PVC

[VT2-PVCS]

Bird Screen for 3 in. (75 mm) PVC

[VT3-PVCS]

3 in. (75 mm) Horizontal Hood Termination

[PVT-HL]

Universal Concentric Vent Kit

[PVC-UCVK]

Low Profile Termination Kit

2 in.: [PVC-2LPT]

3 in.: [PVC-3LPT]

ULC S636 / UL 1738

certified for use in both

Canada and USA

Plastic Rain Cap

[PRC-1]

Not approved for use in

Canada.

Noritz Connect Wireless Adapter

NWC-ADAPTER (× 1)

[NAW-1 US]

Noritz Connect Wireless

Adapter enables users to:

• Remote control (Power

ON/OFF, Adjust set

temperature)

For more information, visit

the Noritz America website

(http://wifi.noritz.com/).

Neutralizer (× 1)

[NC-1S]

(For 1 Water Heater)

About the Water Heater

2.3 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.

* Minimum flow rate may change by setting temperature and water temperature.

Item Specification

Model Name EZ111DV (GQ-C3260WX-FF US) EZ98DV (GQ-C2860WX-FF US)

Type Installation Indoor / Outdoor Wall mounted

Air Supply / Exhaust Power Vented

Ignition Direct Ignition

Operating Pressure 15-150 psi

(Recommended 50 to 80 psi for maximum performance)

Minimum Activation Flow Rate*

Minimum Operating Flow Rate*

0.5 GPM (2.0 L/min)

0.29 GPM (1.1 L/min)

Dimensions (Height) × (Width) × (Depth) 27.0 in. (687 mm) × 18.5 in. (471 mm) × 14.1 in. (359 mm)

Weight 70 lbs. (32 kg)

Water Holding Capacity 0.83 Gallon (3.1 L)

Connection

Sizes

Water Inlet NPT 3/4 in.

Hot Water Outlet NPT 3/4 in.

Gas Inlet NPT 3/4 in.

Condensate Drain NPT 1/2 in.

Power

Supply

Supply 120 VAC (60 Hz)

Consumption NG: 96 W LP: 80 W

Freeze Prevention: 114 W

NG: 75 W LP: 64 W

Freeze Prevention: 114 W

Maximum Current 4 Amps

Materials

Casing

•Front Cover: Hot-dipped zinc-aluminum-magnesium-alloy-coated

steel w/ Polyester Coating

•Casing: Zincified Steel Plate / Polyester Coating

Flue Collar PP

Primary Heat Exchanger Stainless Steel Sheeting, Stainless Steel Tubing

Secondary Heat Exchanger Stainless Steel Sheeting, Stainless Steel Tubing

Safety Devices Flame Rod, High Limit Switch, Lightning Protection Device (ZNR),

Freezing Prevention Device, Fan Rotation Detector

Included Accessories Remote Controller, Remote Controller Cord, Anchoring Screws, Wall

Mounting Bracket

Item Performance

EZ111DV (GQ-C3260WX-FF US) EZ98DV (GQ-C2860WX-FF US)

Maximum Minimum Maximum Minimum

Gas Consumption NG 199,900 Btu/h 18,000 Btu/h 180,000 Btu/h 18,000 Btu/h

LP 199,900 Btu/h 18,000 Btu/h 180,000 Btu/h 18,000 Btu/h

Maximum Hot Water Capacity

(45°F (25°C) Rise) 8.7 GPM (33 L/min) 7.6 GPM (29 L/min)

Capacity Range 0.5-11.1 GPM (2-42 L/min) 0.5-9.8 GPM (2-37 L/min)

Temperature Settings °F Mode 100-140°F (In 5°F intervals) (9 Options)

°C Mode 37-48°C (In 1°C intervals), 50-60°C (In 5°C intervals) (15 Options)

Performances

About the Water Heater

2.4 Dimensions

11.2”[284]

0.3”[8] 14.1”[359]

27.4”[696]

2.3”[59]

(VIEW FROM BOTTOM)

(AC120V)

16.0”[406]

10.2”[260]

5.1”[130]

2.3”[58]

2.0”[52]

27.1”[690]

0.5”[12]

3×0.5”[12]×1.6”[40]RECTANGLE HOLE

10.2”[260]

1.6”[40]

2.2”[56]

3.9”[100]

5.2”[132]

6.7”[169]

8.1”[206]

4×Φ0.5”[Φ13]

2×0.4”×0.24”[10×6]OBLONG HOLE

4×0.24”×0.6”[6×15]OBLONG HOLE

0.4”[10]

26.0”[661]

25.9”[658]

1.1”[27]

3.5”[89]

HOT WATER OUTLET(3/4”)

WATER DRAIN VALVE

(WATER FILTER)

COLD WATER INLET(3/4”)

WATER DRAIN VALVE

17.8”[452]

14.2”[362]

8.7”[220]

2.4”[60]

27.0”[687]

AIR INLET FLUE COLLAR

I.DΦ2.4”[Φ61]I.DΦ2.4”[Φ61]

10.5”[266]5.1”[130]

18.5”[471]

17.8”[451]

WIRING THROUGHWAY CONDENSATE DRAIN(1/2”)

GAS INLET(3/4”)

WATER DRAIN VALVE

WIRING THROUGHWAY

9.7”[246]

11.3”[288]

1.7”[42]

5.7”[144]

2.2”[56]

3.3”[83]

6.0”[152]

15.4”[392]

15.6”[397]

WALL MOUNTING BRACKET

(INCLUDED ACCESSORY)

7.2”[183]

2.1”[5.3]

7×Φ0.2”[Φ6]

About the Water Heater

2.4 Dimensions

HEIGHT OF EACH FITTING FROM CASE

HOT WATER OUTLET TOP 1.9”[49]

COLD WATER INLET TOP 2.1”[53]

CONDENSATE DRAIN BOTTOM 1.7”[42]

GAS INLET BOTTOM 2.2”[56]

11.2”[284]

0.3”[8] 14.1”[359]

27.4”[696]

2.3”[59]

(VIEW FROM BOTTOM)

(AC120V)

16.0”[406]

10.2”[260]

5.1”[130]

2.3”[58]

2.0”[52]

27.1”[690]

0.5”[12]

3×0.5”[12]×1.6”[40]RECTANGLE HOLE

10.2”[260]

1.6”[40]

2.2”[56]

3.9”[100]

5.2”[132]

6.7”[169]

8.1”[206]

4×Φ0.5”[Φ13]

2×0.4”×0.24”[10×6]OBLONG HOLE

4×0.24”×0.6”[6×15]OBLONG HOLE

0.4”[10]

26.0”[661]

25.9”[658]

1.1”[27]

3.5”[89]

HOT WATER OUTLET(3/4”)

WATER DRAIN VALVE

(WATER FILTER)

COLD WATER INLET(3/4”)

WATER DRAIN VALVE

17.8”[452]

14.2”[362]

8.7”[220]

2.4”[60]

27.0”[687]

AIR INLET FLUE COLLAR

I.DΦ2.4”[Φ61]I.DΦ2.4”[Φ61]

10.5”[266]5.1”[130]

18.5”[471]

17.8”[451]

WIRING THROUGHWAY CONDENSATE DRAIN(1/2”)

GAS INLET(3/4”)

WATER DRAIN VALVE

WIRING THROUGHWAY

9.7”[246]

11.3”[288]

1.7”[42]

5.7”[144]

2.2”[56]

3.3”[83]

6.0”[152]

15.4”[392]

15.6”[397]

WALL MOUNTING BRACKET

(INCLUDED ACCESSORY)

7.2”[183]

2.1”[5.3]

7×Φ0.2”[Φ6]

About the Water Heater

2.5 External View

Indoor Installation Indoor Installation

Water Supply Valve

Condensate Drain Pipe

Water Drain Valve

(with Water Filter)

Pressure Relief

Valve

Hot Water

Valve

Intake Pipe Exhaust Pipe Flex Vent 2 in. Conversion Kit

Gas Supply Valve

Outdoor Vent Cap

Outdoor Installation

About the Water Heater

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