Noritz America EZ98DV, EZ111DV User Manual
Owner’s Guide
CONDENSING TANKLESS GAS Water Heater
Models : EZ111DV (GQ-C3260WX-FF US)
EZ98DV (GQ-C2860WX-FF US)
Thank you for purchasing this Noritz Tankless Gas Water Heater.
Before using:
• 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
- 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.
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.
If the information in this manual is not followed exactly, a fire or explosion may result
causing property damage, personal injury or death.
• 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.
NORITZ America Corporation
• 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)
SBB8163
Rev. 05/19
Important Safety Information
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.
Closely observe these warnings; they are critical to your safety.
Icons warning of risk level
This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
Obey all safety messages that follow this symbol to avoid possible injury or death.
DANGER
WARNING
CAUTION
NOTICE
Indicates an imminently hazardous situation which, if not avoided, will result in death
or serious injury.
I
ndicates 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
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 in the same
room or area near the Water Heater.
Keep flammable products:
1. Far away from the Water Heater.
2. In approved containers.
3. Tightly closed.
4. Out of children’s reach.
Vapors:
1. Cannot be seen.
2. Vapors are heavier than air.
3. Go a long way on the floor.
4. Can be carried from other rooms to the
main burner by air currents.
After the Water Heater has been out of use
for a long time make sure that you fill the
condensate trap with water.
This is to prevent dangerous exhaust gases
from entering the building.
Failure to fill the condensate trap could result
in severe personal injury or death.
(Refer to page 15 for further instructions.)
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.
Feel water temperature
before bathing or showering.
Temperature limiting valves
are available, consult with
installer.
Do not use the Water Heater if the intake/
exhaust pipe is displaced, has holes, is clogged
or is corroded.
This will cause carbon monoxide poisoning
and a potential fire hazard.
Do not allow anyone to change the water
temperature while hot water is being used.
To prevent scalding, do not change the water
temperature to a higher setting.
[When supplying combustion air from the
indoors]
Check whether or not the air supply vent is
blocked with dust, trash, a towel, or the like.
Blocking the opening may result in incomplete
combuson.
2
Important Safety Information
WARNING
A. 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.
B. BEFORE OPERATING smell all around the
Water Heater area for evidence of leaking
gas. Be sure to smell next to the floor
because some gas is heavier than air and
will settle on the floor.
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.
C. Use only your hand to turn the gas valve
knob. Never use tools. If the knob will not
turn by hand, don’t try to repair it. Call
a qualified service technician. Force or
attempted repair may result in a fire or
explosion.
D. Do not use this Water Heater if any part
has been under water. lmmediately call a
qualified service technician to inspect the
Water Heater and to replace any damaged
parts.
When a gas leak is noticed:
1. Stop use immediately.
2. Close the gas valve.
[Indoor Installation]
3. Open windows and doors.
If you detect abnormal combustion or
abnormal odors, or during an earthquake,
tornado or fire:
1. Turn off the hot water supply.
2. Turn off the power to the Water Heater.
3. Turn off gas and water supply valves.
4. Call the nearest Noritz agent.
Explosion Hazard;
If the temperature and pressure relief valve
is dripping or leaking, have a qualified service
technician replace it. Do not plug or remove
the valve.
Failure to follow these instrucons can result in
re or explosion, and personal injury or death.
Check the temperature of the running hot
water before entering the shower.
Check the temperature before stepping into
the bathtub.
Do not place the exhaust vent terminal in an
indoor environment by means of adding walls
and ceiling (Do not enclose using corrugated
sheets, etc.).
Carbon monoxide poisoning or re may occur
as a result.
Leave the proper clearance between the
Water Heater and nearby objects (trees,
timber, boxes with flammable materials, etc.).
[Indoor Installation]
Top:
12 in.(300 mm)
or more
Left side:
3 in. (76 mm)
or more
Front:
24 in. (610 mm)*
[Outdoor Installation]
Top:
36 in. (910 mm) or more
Left side:
3 in. (76 mm)
or more
Front:
24 in. (610 mm)*
*Indicates suggested clearances for maintenance.
Do not place combustibles such as laundry,
newspapers, oils etc. near the heater or the
exhaust vent terminal.
Do not install this Water Heater in a
recreational vehicle or on a boat as this may
be a Carbon Monoxide Poisoning Hazard.
Do not install this Water Heater in a mobile
home when using SV conversion kit (“-SV”
configuration).
Do not use combustible chemicals such as oil,
gasoline, benzene etc. in the near the heater
or the exhaust vent terminal.
Do not store or use gasoline or other
flammable vapors and liquids in the vicinity of
this or any other appliance.
Do not place or use a spray can near the
Water Heater or the exhaust vent terminal.
3 in.(76 mm)
from exhaust
vent pipe*
Right side:
3 in. (76 mm)
or more
Right side:
3 in. (76 mm)
or more
To prevent burns or scalding, turn off the
button and wait until the appliance cools
before performing maintenance.
Important Safety Information
3
WARNING
Be sure the gas/power supplied matches
“Type of Gas” and “Electrical Rating” on the
rating plate.
[When supplying combustion air from the
indoors]
Check the air supply opening for dust or
obstructions.
To prevent injury or death, do not allow small
children to bathe or play in the bathroom
unsupervised.
(e.g. EZ111DV (GQ-C3260WX-FF US))
Installation and service must be performed by
a qualified installer, service agency or the gas
supplier.
Consult the nearest Noritz agent if the Water
Heater location needs to be changed.
If this appliance will be installed in a location
where hair spray or aerosols will be used,
locate the appliance in a separate area that is
supplied with fresh air from outdoors.
Do not use hair spray or spray detergent in the
vicinity of the appliance.
Avoid installation in places where dust or
debris will accumulate.
Dust may accumulate and reduce the
performance of the unit’s fan.
This can result in incomplete combustion.
Do not touch the power cord with
wet hands.
Contact a qualified service technician for any
necessary repairs, service or maintenance.
Do not use parts other than those specified
for this appliance.
California Proposition 65 lists chemical
substances known to the state to cause
cancer, birth defects, death, serious illness or
other reproductive harm. This product may
contain such substances, be their origin from
fuel combustion (gas, oil) or components of
the product itself.
The gas 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
authority having jurisdiction. The information
in the instructions must be followed to
minimize the risk of fire or explosion or to
prevent property damage, personal injury,
or death. The qualified service agency is
responsible for the proper installation of
this kit. The installation is not proper and
complete until the operation of the converted
appliance is checked as specified in the
manufacturer’s instructions supplied with the
kit.
CAUTION
Be sure to electrically ground the appliance.
Keep power cord free of dust.
Do not use the Water Heater for other than
hot water supply, shower and bath.
Do not use a broken or modified power cord.
Do not bind, bend or stretch power cords.
Do not scratch, modify, or subject them to
impact or force.
Do not use condensate, discharged from the
condensate drain pipe, for drinking or for
consumption by animals.
4
Important Safety Information
If the appliance is installed in a location with
very high humidity, condensate may form
inside the unit and/or cause incomplete
combustion, damage to the electrical
components, or electric leakage.
Do not turn off the Water Heater while
someone is bathing.
Do not cover the Water Heater and the
exhaust vent terminal, store trash or debris
near it, or in any way block the flow of fresh
air to the appliance.
Do not touch the exhaust vent pipe and
exhaust vent terminal during or immediately
after operation of the Water Heater.
NOTICE
Do not drink water that has been inside the
appliance for an extended period of time. Do
not drink the first use of hot water from the
appliance in the morning.
Clean the filter on the water inlet as
frequently as required by the quality of
your local water.
Keep the area around the appliance clean.
If boxes, weeds, cobwebs, cockroaches etc. are
in the vicinity of the appliance, damage or fire
can result.
Do not install the appliance where the
exhaust will blow on walls or windows.
If the water supply is in excess of 12 gpg
(200 mg/L) of hardness, acidic or otherwise
impure, treat the water with approved
methods in order to ensure full warranty
coverage. (See page 17)
Problems resulting from scale formation are
not covered by the warranty.
Check ignition during use and extinction after
use.
Do not run water through the appliance when
appliance is not on.
When discharging hot water, make sure the
appliance is ON.
appliance with the appliance
condense inside the appliance and cause
incomplete combustion or damage to the
internal electrical components.
For single-handle fixtures, you’d turn the handle
to the left.
If water is run through the
OFF, water may
Do not disassemble the Remote Controller.
Do not use chlorine-based, acidic, alkaline
detergents, organic solvents such as benzine
and thinner, or Melamin Sponge to clean the
Remote Controller.
This may cause discoloration, deformation,
scratches or cracks.
Do not splash water on the Remote Controller.
Do not expose the Remote Controller to
steam.
Although it is water resistant, too much water
can cause damage.
Do not locate the Remote Controller near
stoves or ovens.
This may cause damage or failure.
Contact Noritz before using with a solar preheater.
Preventing damage from freezing (See page
13)
• Damage can occur from frozen water within
the appliance 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.
Take necessary measures to prevent freezing
of water and leakage of gas when leaving the
appliance unused for long periods of time.
(See page 14)
If it is snowing, check the exhaust vent
terminal for blockage.
This appliance is only approved for installation
up to 4,500 ft (1,350 m) above sea level.
For installations at higher elevations, contact
Noritz America for Instructions.
Important Safety Information
5
Contents
Important Safety Information ............... 3
Contents ............................................... 5
General Parts ........................................ 7
Water Heater ........................................ 7
Remote Controller ................................ 8
Initial Operation ................................... 9
Using the Water Heater ........................ 10
Setting Hot Water Temperature ............ 11
Customizable Settings........................... 12
Limiting the Maximum Output
Temperature .......................................... 12
Muting the Remote Controller ............. 12
Flow Meter Alarm ................................. 12
Preventing Damage from Freezing ....... 13
Regular Maintenance ...........................16
Troubleshooting ................................... 18
Follow-up Service .................................21
Specifications .......................................23
6
Contents
General Parts
Water Heater
Indoor Installation
1 2
4
3
7
Outdoor Installation
5
Flex Vent 2 in. Conversion Kit
Outdoor Vent Cap
6
1. Intake Pipe
2. Exhaust Pipe
3. Pressure Relief Valve
4. Hot Water Valve
5. Water Supply Valve
8
6. Water Drain Valve (with
Water Filter)
Inside Water Inlet (See page 17)
9
This illustration shows an example of installation.
The exact installation configuration may be slightly different.
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 condensate drain pipe
(approximately 2 gallons/h (7.5 L/h) 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. A condensate neutralizer
may be required by local code prior to disposal.
The condensing tankless gas Water Heater tends to
emit white steam.
After the exhaust gas passes through the secondary
Heat Exchanger, the low temperature and high
moisture content tends to produce steam at the vent
discharge terminal.
This is a normal occurrence.
7. Front Cover
8. Gas Supply Valve
9. Condensate Drain Pipe
Discharge the condensate.
During combustion, white
steam may often be seen.
This is normal.
General Parts
7
Remote Controller (RC-7651M-A)
• What is actually displayed depends on how the Water Heater is set.
• Before use, remove the protective sheet from the Remote Controller surface.
5
3
4
6
1
2
1. POWER Button / Indicator
For turning the Water Heater ON/OFF.
2. SETTINGS Buon
For setting the flow meter alarm, and other
settings.
3. / Buttons
For setting the hot water temperature, the flow
meter alarm, and other settings.
4. PRIORITY Indicator
When this indicator is displayed, the hot water
temperature can be set.
8
General Parts
5. BURNER ON Indicator
When burning, the indicator is displayed.
6. - Temperature Setting (e.g. 110°F)
- Flow Meter Setting (See page 12)
- Error Code
A number will blink if a failure occurs.
(See page 20)
NOTE
As shipped from the factory, the
Remote Controller is set to display in
°F and gallons.
To adjust the display to °C and liters,
refer to the Installation Manual.
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