American Water Heater Low NOx 108 series Specifications

American Water Heater Low NOx 108 series Specifications
TANKLESS GAS WATER HEATER
Owner’s Guide
Model NC199-DVC
FOR USE IN RESIDENTIAL, COMMERCIAL, OR MANUFACTURED HOME APPLICATIONS.
WARNING
If the information in this manual 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.
CERTIFIED
R
Low NOx
Approved by
SCAQMD
Accepted For Use
City of New York
Department of Buildings
MEA 19-03-E
SBA8359
Rev. 09/09
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
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
*SBA8359*
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. 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
DANGER indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
WARNING
WARNING indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION
CAUTION indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
CAUTION
CAUTION used without the safety alert symbol indicates a potentially
hazardous situation which, if not avoided, may result in property damage.
Other icons
Electric
Shock.
High
Temperature.
Be sure
to do.
Prohibited
No flame.
Don’t
touch.
Ground.
Don’t
disassemble
the equipment.
Don’t touch
with a wet
hand.
DANGER
Vapors from flammable liquids will explode and catch fire causing death or severe burns.
Prohibited
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: Vapors:
1. Far away from the water 1. Cannot be seen.
heater.
2. Vapors are heavier than air.
2. In approved containers.
3. Go a long way on the floor.
3. Tightly closed.
4. Can be carried from other rooms
4. Out of children’s reach.
to the main burner by air currents.
Hot Water Heater temperatures over 125 °F can cause severe burns instantly or
death from scalding.
Prohibited
2
Children, disabled and elderly are at the highest risk of being scalded.
Feel water temperature before bathing or showering.
Temperature limiting valves are available, ask professional person.
(Continued)
(Continued)
Do not use the water heater if
the concentric pipe is displaced, has
holes, is clogged or is corroded.
Prohibited
Prohibited
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.
WARNING
No flame.
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.
Be sure
to do.
Be sure
to do.
Prohibited
When a gas leak is noticed:
1. Stop use immediately
2. Close the gas valve
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
valve.
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 instructions can result
in fire or explosion, and personal injury or
death
High
Temperature.
Check the temperature
of the running hot water
before entering the
shower.
Check the temperature
before stepping into
the bath tub.
(Continued)
3
Important Safety Information-2
(Continued)
WARNING
Prohibited
Do not place the flue terminal in an
indoor environment by means of
adding walls and ceiling (Do not enclose using corrugated sheets, etc.)
Prohibited
Flue terminal
Prohibited
Prohibited
Carbon Monoxide Poisoning Hazard.
Do not install this water heater in a
recreational vehicle or on a boat.
Do not use combustible chemicals
such as oil, gasoline, benzene etc. in
the near the heater or the flue 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 heater or the flue terminal.
Carbon monoxide poisoning or fire may
occur as a result.
Prohibited
Do not place outdoors
Prohibited
Be sure
to do.
Rain may enter the unit or
the burner fire may be
blown by the wind, causing
malfunction or fire as a
result.
Be sure
to do.
Outdoor
Left side:
Min. 2"
Front:
Sug. 24"*
NC199-DVC
199,900 BTU
11,000 BTU
202
10.3a-2007
4.3a-2007
199,900
192,800
168,000
162,000
3.3
3.1"
Be sure
to do.
Prohibited
Flue terminal
Prohibited
4
10.5"
3.1"
150
2
Right side:
Min. 2"
Do not place combustibles such as
laundry, newspapers, oils etc. near
the heater or the flue terminal.
750
4.0
0.65
15
Sug.3" from
concentric pipe*
* Indicates suggested clearances for maintenance.
Prohibited
For Natural Gas
Leave the proper clearance between
the water heater and nearby objects
(trees, timber, boxes with flammable
materials etc.).
Upper:
Min. 12"
Be sure the gas/power
supplied matches the
gas on the rating plate.
3.3
3.1"
Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
If this unit will be installed in a beauty
salon or other location where hair
spray or aerosols will be used, locate
the unit in a seperate area that is
supplied with fresh air from outdoors.
Do not use hair spray or spray
detergent in the vicinity of the
heater.
(Continued)
(Continued)
Prohibited
Do not allow small children to play
unsupervised in the bathroom.
Do not allow small children to
bathe unsupervised.
Do not touch the power
cord with wet hands.
Don’t touch
with a wet
hand.
Be sure
to do.
Don’t
disassemble
the equipment.
Electric
Shock.
Consult the nearest Noritz agent if
the water heater location needs to
be changed.
Contact a qualified service
technician for any necessary
repairs, service or maintenance.
Contact Noritz before using with
a solar pre-heater.
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.
Be sure
to do.
CAUTION
Be sure to electrically ground the
unit.
Do not turn off the water heater
while someone is bathing.
Prohibited
Ground.
Keep power cord free of dust.
Prohibited
Be sure
to do.
Prohibited
Prohibited
Be sure
to do.
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.
Prohibited
Don’t
touch.
Do not cover the water heater and
the flue terminal, store trash or
debris near it, or in any way block
the flow of fresh air to the unit.
Do not install in locations where
excessive dust or debris will be
in the air.
Do not touch the flue terminal and
concentric pipe during or
immediately after operation of the
water heater.
To prevent burns or scalding, turn
off the power button and wait until
the equipment cools before performing maintenance.
5
Important Safety Information-3
CAUTION
Do not drink water that has been inside the
unit for an extended period of time. Do not
drink the first use of hot water from the
unit in the morning.
This unit is only approved for installation
up to 4500 ft. above sea level.
Clean the filter on the water inlet as
frequently as required by the quality of
your local water.
Do not disassemble the operation panel.
Keep the area around the unit clean.
This may cause deformation.
If boxes, weeds, cobwebs, cockroaches etc. are in
the vicinity of the unit, damage or fire can result.
Do not get the operation panel wet.
Do not install the equipment where the
exhaust will blow on walls or windows.
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.
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 unit when
unit is not on.
When discharging hot water, make sure the unit is ON.
If water is run through the unit with the unit
OFF, water may condense inside the unit and cause
incomplete combustion or damage to the internal
electrical components.
For single-handle fixtures or valves, discharge
water setting the handle completely
to the water side.
6
For installations at higher elevations, contact Noritz
America for Instructions.
Do not use benzene, oil or fat detergents
to clean the operation panel.
Although it is water resistant, too much water can
cause damage.
Do not splash water on the operation
panel. Do not expose the operation panel
to steam.
Do not locate the operation panel near stoves or
ovens, this may cause damage or failure.
Preventing damage from freezing (
p.17)
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.
Take necessary measures to prevent
freezing of water and leakage of gas when
leaving the unit unused for long periods of
time. ( p.18)
If it is snowing, check the flue terminal for
blockage.
Do not use parts other than those specified
for this equipment.
Contents
Important Safety Information ....................................................................... 2
Contents ........................................................................................................ 7
General Parts
Main Unit .................................................................................................... 8
Operation Panel ........................................................................................ 9
Initial Operation ........................................................................................... 10
How to Use
Muting the Operation Panel ..................................................................... 11
Setting and Using the Water Heater ........................................................ 12
Flow Meter Alarm ...................................................................................... 14
Adjusting the Maximum Output Temperature ........................................ 16
Preventing Damage from Freezing ............................................................ 17
Regular Maintenance ................................................................................... 19
Troubleshooting .......................................................................................... 21
Follow-up Service ........................................................................................ 25
Specifications .............................................................................................. 27
7
General Parts
Main Unit
Indoor Wall Mounted, Power Vent/Sealed Model
Concentric Pipe
Front Cover
Operation Panel
Water Drain Valve (with Water Filter)
(Inside Water Inlet)
(
p.20)
Pressure Relief Valve
Water Supply Valve
Gas Supply Valve
* The above illustration shows an example of installation.
The exact installation configuration may be slightly different.
8
Operation Panel (RC-7649M)
What is actually displayed depends on how the water heater is set.
Burner On Indicator
Setting Buttons
When burning, the
indicator is lit.
( p.13 and 15)
For setting the hot
water temperature,
the flow meter alarm,
and other settings.
Priority Indicator
When this indicator is lit,
the hot water temperature
can be set.
( p.12)
Temperature Setting
(Ex.: 110°F)
Power On/Off Button
For turning the
heater on and off.
Flow Meter Setting
The display will flash
after hitting the flow
meter alarm set button.
( p.15)
Flow Meter Alarm Set Button
For setting the flow
meter alarm.
( p.14 - 15)
Error Code
A number will flash if
a failure occurs.
( p.24)
* Before use, remove the protective sheet from the operation panel surface.
9
Initial Operation
Before the first use of your water heater, make the following preparations.
Follow steps
1
2
1 through 4.
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
10
3
Open the gas supply valve.
4
Turn on the power.
Do not touch with wet hands.
How to Use
Muting the Operation Panel
1
1
The operation panel 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.
Muted
No sound
after 5 sec.
Sound
Tone sounds
after 5 sec.
• The flow meter alarm cannot be muted.
• The high temperature warning tone when setting the unit to 125°F or higher will not emit a sound
when muted.
11
How to Use
Setting and Using the Water Heater
2
1
(Starting with the Power Off)
1
Press the Power
On/Off Button.
On
The temperature will be
displayed on the operation
panel thermostat.
On
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.
• Children, disabled and elderly are at the highest risk of being scalded.
Feel water temperature before bathing or showering.
Temperature limiting valves are available, ask professional person.
Operation Panel Display
• When setting the unit to 125°F or higher, the temperature
display will flash for 10 seconds and emit a tone as a high
temperature warning.
• Take caution when using the unit again after setting to 125°F
or higher. Always check the set temperature before use.
• Do not allow anyone to change the water temperature while
hot water is running.
12
Flashes for 10 sec
Set temperature.
2(
Always check the
temperature setting
before use.
)
3
Turn on hot
water.
4
Turn off the hot
water.
Hot
Cold
Check the indicator lights.
On
Off
Water temperature
(°F:
)
The temperature settings below are examples. The temperature setting
necessary depends on the usage, the length of piping and the time of year.
The maximum output temperature Contact the installer or Noritz America
can be set using the operation when setting the maximum output tempanel.
( p.16) perature in this range.
100
Washing
dishes, etc.
105 110 115 120 125 130 135 140 145 150 160 170 180
Shower, hot water supply,
etc.
If fixtures incorporate mixing valves,
set the temperature higher than usual.
High temperature
*Initial factory setting is 110°F
* For most residential applications, the recommended setting temperature is 120°F or less.
* Consult local codes for minimum operating temperatures.
13
How to Use
Flow Meter Alarm
2,3
1
3
(Starting with the power off)
Preparation
1
Press the Power
On/Off Button
Plug the bath drain.
Set temperature.
2(
Always check
temperature setting
before use.
)
On
Hot
Cold
The temperature will be displayed
on the operation panel thermostat.
On
Previous set temperature
(example:110°F)
14
Check the indicator lights.
Water temperature
Water Temperature
An alarm will sound for ten
seconds when the flow
reaches the set level.
(°F:
The temperatures settings below are only examples. The
temperature setting necessary will depend on the usage,
the length of piping and the time of year.
100
Warm
The water will continue to run unless it is
manually turned off.
105
110
115
Warmer
)
120
Hot
* Initial factory setting: 110°F
To set the flow meter alarm:
3
Adjust flow meter
alarm setting.
4
Turn on hot
water.
Press the flow meter alarm set button
(the setting will flash on the display)
and adjust with the setting buttons.
5
Turn off the hot
water when the
alarm sounds.
The alarm will sound when
the set level has been
reached. Stop the water.
Increase
Decrease
Choose the flow meter alarm setting
from the following options: 10 - 60
(In 5 gallon intervals), 70 - 100 (In
10 gallon intervals), or 990 gallons.
Note:
The alarm will not sound if
it is set for 990 gal.
Note:
On
The alarm will not
sound if it is set for
990 gal.
Off
Flow meter setting will be flashing
(ex. 45 gal.)
* The level can only be adjusted
while the indicator is flashing.
* After ten seconds, the remote
will again display the temperature.
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.
• If there was water in the tub before the fill began, or if the water is not shut off manually when
the alarm sounds, the tub may overflow.
• If there was water in the tub before the fill began, the temperature in the tub after it is full may
be different from the temperature setting.
15
How to Use
Adjusting the Maximum Output Temperature
3
1
2
1
Turn off the
power.
2
Press and hold the flow
meter alarm set button until
a sound is heard (2 sec.).
Tone sounds
after 2 sec.
Off
3
Change the
temperature using
the setting buttons.
Up
Down
The upper limit of the hotwater supply temperature can
be changed to 100°F, 105°F,
110°F, 115°F, 120°F, 125°F,
130°F, 135°F or 140°F.
4
16
Set the Power button to ON when continuing to use
the unit as is. Otherwise, let the unit sit for 30 sec.
Preventing Damage from Freezing-1
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. Do not remove the power
plug from the wall outlet.
(Freezing will be prevented regardless of whether the operation switch is ON or OFF.)
* In normal operation, freezing is prevented within the device automatically unless the outside
temperature without wind is below -30°F.
* 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*.
(outside temperature including wind chill factor less than -30°F)
Hot Water Fixture
This method can protect not only the heater, but also the water supply,
water piping and mixing valves.
1. Turn off the power.
2. Close the gas supply valve.
3. Open a hot water fixture, and keep a small stream of hot water
running. (0.1 gal/minute or about 0.2" thick.)
* If there is a mixing valve, set it to the highest level.
* When linking multiple units, discharge water equivalent to
0.1 gal/minute per unit.
4. The flow may become unstable from time to time. Check the flow
30 minutes later.
* In general, it is not advisable to run water through the unit when
it is OFF ( p. 6), but in this case freeze prevention is more important.
0.2" thick
* Remember to set mixing valves and fixtures to their original levels before using the unit again
to prevent scalding.
* If there is still a risk that the unit will freeze, drain the unit as shown on the next page.
If water will not flow because it is frozen
1. Close the gas and water valves.
2. Turn off the power button.
3. Open the water supply valve from time to time to check whether water is running.
4. When the water is flowing again, check for water leaks from the equipment and piping before using.
If the heater or the piping is frozen, do not use the heater or it may get damaged.
17
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.
High Temperature
Drain water into a bucket to prevent water damage.
1. Close the gas valve.
2. (1) Turn the power on.
(2) Turn and leave open the hot water fixtures for more than 2 minutes and close.
* If multiple units are being used, drain two minutes for each unit.
Fixture
* An 11 Error Code may appear on the operation panel.
This is not a malfunction of the unit. Do not turn Power ON/OFF Button OFF.
3. Close the water supply valve, disconnect
the electrical power supplied to the unit.
Do not touch with wet hands.
4. Fully open all hot water fixtures.
Fixture
5. Open all drain plugs and drain the water out
of the unit.
6. When the water is completely drained, replace all drain
plugs and close the hot water fixtures.
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.10 “Initial operation”, steps 1 through 4.
18
Drain Plugs
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.
Check For laundry, newspaper, timber,
oil, spray cans and other
combustible materials.
Check For dust and soot
in the flue terminal.
Check For abnormal sounds
during operation.
Check For abnormalities in
external appearance,
discoloration or flaws.
Check For proper operation of
pressure relief valve.
Check For water leaks from the
equipment and piping.
Periodic Maintenance
Equipment
Wipe the outside surface with a wet cloth, then dry the surface. Use a neutral detergent to
clean any stains.
Operation Panel
Wipe the surface with a wet cloth.
• Do not use benzene, oil or fatty detergents to clean the operation panel;
deformation may occur.
• The operation panel is water resistant but not water proof. Keep it as dry as possible.
19
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.
The appliance will remain hot after it is turned off.
1. Close the water supply valve.
2. Open all hot water fixtures.
3. With a bucket ready, remove the inlet and outlet
drain plugs (about 0.2 gal. will drain out)
4. Take the water drain valve (with water filter) out
of the inlet. (See illustration to right).
5. Clean the water drain valve (with water filter) with
a brush under running water.
6. Replace the water drain valve (with water filter)
and close the drain plugs.
(Take care not to lose the packing.)
7. Close all hot water fixtures.
8. Open the water supply valve and check that
water does not leak from the drain plugs or water
drain valve (with water filter).
Inlet
Packing
Water drain valve
(with water filter)
Water Supply
Valve
Optional Maintenance
Isolation Valves
* Isolation valves may be purchased as an
accessory from Noritz.
They allow for full diagnostic testing and easy
flushing of the system.
* The kit includes two full port isolation valves
and a pressure relief valve for the hot side.
Contact Noritz for more information.
Hot Water
Service Valve
Pressure Relief Valve
Cold Water
Service Valve
Drain
20
Water Outlet
Water Intlet
Troubleshooting-1
Initial Operation
Unit does not attempt to ignite
when water is running.
• Check for reversed plumbing or crossed pipes.
• Check the water drain valve filter. ( p.20 )
Unit attempts to ignite but fails
• Reset unit and try again. There may be air in the gas line.
• Have a professional check the gas supply pressure.
Temperature
Hot water is not available
when a fixture is opened.
•
•
•
•
Are the gas and water supply valves fully open?
Is the water supply cut off?
Is the hot water fixture sufficiently open?
Is the gas being cut off by the gas meter?
(Can other gas devices such as stoves be used?)
• (For LP) Is there enough gas in the tank?
(Can other gas devices such as stoves be used?)
• Is the water drain valve filter clogged? ( p.20)
• Is the power button turned on?
No water is available when
a fixture is opened.
• Is the water supply cut off?
• Is the heater frozen?
The hot water is not the correct
temperature.
• Is the hot water fixture sufficiently open?
• Have you allowed enough time for the cold water in the
Water takes time to become hot
pipes to drain out?
when turning the hot water fixture.
The water is too hot.
• Are the gas and water supply valves fully open?
• Is the water temperature setting appropriate?
( p.12 and p.13)
• If the water supply temperature is high, it is possible
for the temperature to be higher than the temperature
set on the operation panel.
• If only a small amount of hot water is demanded, it is
possible for the temperature to be higher than the
temperature set on the operation panel.
The water is not hot enough.
• Are the gas and water supply valves fully open?
• Is the water temperature setting appropriate?
( p.12 and p.13)
• If the amount of hot water required is very high, it is
possible for the temperature to be lower than the temperature set on the operation panel.
Decrease the amount of hot water passing through the unit
and the temperature should stabilize.
(Continued)
21
Troubleshooting-2
(Continued)
The water is cold when only a
single fixture is open.
• The unit will not heat the water if the flow rate is less than
0.5 gallons per minute.
Open the fixture more or open other fixtures so that a greater
flow passes through the unit, and the unit should begin
heating again.
Fluctuations in hot water
temperatures.
• Set water temperature at 115°F to 120°F. This will allow you
to use a higher flow of hot water thus meeting the minimum
flow requirement of 0.5 gpm.
• Clean the water filter of any debris ( p.20)
Setting temperature cannot rise.
• Is the maximum temperature setting appropriate? (
p.16)
Amount of Hot Water
The amount of hot water at a
certain fixture is not constant.
• When hot water is demanded at other fixtures, the amount
available may be reduced. The maximum flow available
from this unit is 7.5 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.
• There are some types of hot water taps that discharges large
volumes of hot water at first but stabilize after time.
• To keep the temperature stable, the heater limits the
amount of water that can flow through it to a small amount
initially, but the amount increases over time.
The amount of hot water in the tub • When hot water is used for other fixtures while filling the
is less/more than the set amount.
bath tub, the tub will not fill as much.
• If there is water in the tub already, or when filling is stopped
and restarted, the tub will fill more.
22
The flow meter alarm does not
sound even when filled to the set
amount.
• The flow meter alarm is set to sound when hot water
is continuously discharged for the set volume of water.
If mixing valves are used, or if cold water is mixed with hot
water at the fixture, the tub will fill more than the setting
of the flow meter alarm.
Amount of hot water available
has decreased over time.
• Is the water filter clogged? (
p.20)
• If the supply water is hard and has not been treated, scale
can build-up in the water heater and decrease the
maximum amount of hot water available. Scale can be
removed from the water heater by flushing the unit
periodically. To prevent scale from forming in the water
heater, a water softener or scale inhibitor is
recommended.
Operation Panel
The light on the power button
does not come on.
• Has there been a power failure?
The water temperature changes
after a power failure or when the
power is disconnected.
• The temperature setting and the flow meter alarm setting
may both need to be reset after a power outage.
• Is the power connected properly?
The plastic on the surface or buttons • The surface of the operation panel is affixed with a
protective sheet (to prevent surface scratching, etc.) at
of the operation panel has torn,
time of shipment. This sheet can be removed or left as it
peeled, or air bubbles inside.
is. When leaving the protective sheet on, areas frequently
touched may tear or peel. However, the operation panel
will not malfunction from water entering such torn or
peeled areas. To restore the appearance of the operation
panel surface, simply remove the protective sheet.
Sounds
The fan can be heard after
operation is stopped.
A motor can be heard when turning
the unit ON or OFF, when opening
or closing a fixture, or after the unit
has been running for a while.
• These noises indicate the proper operation of devices
which are designed to let the unit reignite more quickly,
and ensure the water temperature is stable.
Other
The Heater stops burning during
operation.
•
•
•
•
White smoke comes out of the
exhaust vent on a cold day.
• This is normal. The white smoke is actually steam.
The hot water is turbid.
• This is harmless. Small bubbles appear as the air in the
water is heated and depressurized rapidly to
atmospheric pressure.
The water appears blue
The bath tub/wash-basin has turned
blue
• Coloration to a blue color may be noticed from small
traces of copper ion contained in the water and fat
(furring). However, there are not problems concerning
health. Coloration of the bath tub/wash-basin can be
prevented by cleaning frequently.
Are the gas and water supply valves fully open?
Is the water supply cut off?
Is the hot water fixture sufficiently open?
Is the gas being cut off by the gas meter?
(Can other gas devices such as stoves be used?)
• (For LP) Is there enough gas in the tank?
(Can other gas devices such as stoves be used?)
23
Troubleshooting-3
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Water Quality
Damage to the water heater as a result
of poor water quality is not covered by
the Limited Warranty. To ensure full
warranty coverage, treat or condition
water that exceeds the target levels
provided in this table.
Source: EPA National Secondary Drinking Water
Regulations (40 CFR Part 143.3)
Total Hardness*
Aluminum
Chloride
Copper
Iron
Manganese
pH
Total Dissolved Solids
Zinc
Sulfate ion
Residual chlorine
: 200 mg/L (12 gpg) or less
: 0.05 to 0.2 mg/L or less
: 250 mg/L or less
: 1 mg/L or less
: 0.3 mg/L or less
: 0.05mg/L or less
: 6.5 - 8.5
: 500 mg/L or less
: 5 mg/L or less
: 250 mg/L or less
: 4 mg/L or less
* Maximum limit suggested by Noritz.
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Check for an Error Code on the Operation Panel
If there is a problem with the unit, a numerical error code will flash on the operation panel.
If this occurs, take appropriate measures as listed below.
Flashing
When an error code appears, the display and the operation light will flash
together.
Error Code
Cause
Action
Ignition error
Check whether the gas valve is open. Press the power
button to turn the unit off, open a hot water fixture,
and turn the unit back on. If the flashing number
doesn't return the problem is solved.
Abnormal combustion,
low gas supply pressure
Have a professional check the gas supply pressure.
Contact the nearest Noritz agent.
Abnormal combustion
Contact the nearest Noritz agent.
Contact Noritz America if:
• Any other error code appears.
• An error code is indicated again after the above actions were followed.
• There are any other questions.
24
Follow-up Service-1
Requesting Service
First follow the instructions in the troubleshooting section ( p.21 to p.24).
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 ..... (see the warranty)
Details of problem ... (flashing error codes,
etc., in much detail as possible)
Your name, address, and telephone number
Desired date of visit
* A request for service may be rejected if the water heater is installed
in a location where working on the unit may be dangerous. Contact a
plumber.
Warranty
A warranty registration card is included separately.
Be sure that the plumber, date of purchase and other necessary items are filled in.
Read the content carefully, and keep the warranty card in a safe place.
For repairs after the warranty period, there will be a charge on any service, and service will only
be performed if the unit is deemed repairable.
Period of Time for Stocking Repair Parts
Noritz will stock repair and maintenance parts for this unit within twelve (12) years of the date of
original installation.
Reinstallation
If you want to reinstall the appliance at a different location, confirm that the gas and power
supply indicated on the rating plate are available at the new location. If you are not sure,
consult the local utility company.
25
Follow-up Service-2
Gas Conversion
If you move to a region that uses a different type of gas or if the local gas supply is
converted,replacement of the gas manifold and adjustment of the appliance will be necessary.
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.
For more information, contact Noritz America Technical Support at 866-766-7489.
WARNING
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.
* A qualified service agency is any individual, firm, corporation, or company which either in person or through
a representative is engaged in and is responsible for the connection, utilization, repair or servicing of gas
utilization equipment or accessories; who is experienced in such work, familiar with all precautions required,
and has compiled with all of the requirements of the authority having jurisdiction.
Before the gas conversion is performed, verify the proper gas conversion kit with your
water heater model on the table provided below.
Conversion Kit
Conversion Type
CK-17
Propane to Natural Gas
CK-18
Natural Gas to Propane
The following parts are supplied in the conversion kit. These items will replace the existing parts that
are currently installed in the unit. Make sure that all parts are replaced and properly installed by a
qualified service agency.
* A Noritz remote controller and a digital gas manometer are required to complete the installation.
Do not proceed if this equipment is not immediately available.
Manifold Plate
O-Ring
Damper
Conversion Kit Label
Exhaust Ring
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.
The gas pressure values at both the gas supply inlet fitting and at the manifold inlet on the unit are
verified by the installer. Proper adjustments will be made to ensure safe and efficient operation.
Once this is completed, a final gas leak check will be performed to confirm that all parts have been
securely installed.
If you notice the smell of gas at any time after the installation has been completed, turn the water
heater off and contact your gas supplier immediately.
26
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.
Specifications
Specification
Item
Model Name
Type
Ignition
Operating Pressure
Minimum Flow Rate
Dimensions
Weight
Water Holding Capacity
Connection Sizes
Power Supply
Materials
Installation
Air Supply/Exhaust
Water Inlet
Hot Water Outlet
Gas Inlet
Supply
Consumption
Casing
Flue Collar
Heat Exchanger
Safety Devices
NC199-DVC
Indoor, Wall Mounted
Power Vented
Direct Ignition
15-150 psi
0.5 GPM
23.6"(Height) x 13.8"(Width) x 10.2"(Depth)
55 lbs.
0.2 Gallon
3/4"
3/4"
3/4"
120 VAC (60Hz)
NG : 108W LP : 96W Freeze Prevention 161W
Zincified Steel Plate/Polyester Coating
Stainless Steel
Copper Sheeting, Copper Tubing
Flame Rod, Thermal Fuse, Lightning Protection
Device (ZNR), Electric Leakage Prevention Device
(GFCI), Overheat Prevention Device, Freezing
Prevention Device, Fan Rotation Detector
Accessories
Anchoring Screws
Performance
Item
Gas
Consumption
NG
LP
Maximum Hot Water Capacity 45°F Rise
Capacity Range
Temperature Settings
Default Temperature Options
Maximum Performance
Minimum Performance
199,900 btuh
11,000 btuh
199,900 btuh
11,000 btuh
7.5 Gal./min.
0.5-9.8 Gal./min.
100-150°F (In 5°F intervals),
160, 170, 180°F (In 10°F intervals) (14 Options)
120,130,140,180°F (Original is 120°F)
27
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