Noritz ecoTOUGH NRC711-DV Installation Manual
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.
Prohibited
Disconnect
Power
Ground
Be sure to do
WARNING:
If the information in this manual is not followed exactly, a re or explosion may result
causing property damage, personal injury or death.
NORITZ AMERICA
CORPORATION
Installation Manual
CONDENSING TANKLESS GAS WATER HEATER
NRC711-DV
(Indoor Installation)
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.
DANGER
WARNING
CAUTION
SBB806U
Rev. 01/14
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, please 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. Also, be sure to ll in all of the required
items on the warranty and to hand the warranty to the customer along with the Owner's Guide.
CAUTION
FOR USE IN RESIDENTIAL 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 CSA B149.1, Natural Gas and Pro-
pane Installation Code (NSCNGPIC).
Noritz America reserves the right to discontinue, or change at
any time, the designs and/or specications of its products without notice.
CERTIFIED
R
Low NOx
Approved by
SCAQMD
14 ng/J or 20 ppm
(Natural Gas Only)
*SBB806U*
2
1.
Included Accessories
The following accessories are included with the unit.
Check for any missing items before starting installation.
Q’ty
ShapePart
Anchoring Screw
1
each
Part Shape
Q’ty
5
1
Remote Controller
(See p. 30)
Remote Controller
Cord (10ft (3m))
1
2.
Optional Accessories
The accessories listed below are not
included with the units, but may be necessary
for installation.
Q’ty
ShapePartPart Shape
Q’ty
Remote Controller
Cord (26ft (8m))
1
1
each
Isolation V alves
(includes pressure
relief valve)
Owner's Guide, Warranty,
Installation Manual
(this document)
Bird Screen for
3" (75mm) PVC
VT3-PVCS
2
3" (75mm)
PVC Terminal
VK3-H-PVC
1
1
Pipe Cover
(PC-1S)
Note: Additional vent pieces are available; consult the latest product catalogue for details.
3" (75mm)
Horizontal Hood
Termination PVT-HL
2
1
each
SV Conversion Kit
(#SV-CK-3)
•90 Elbow
(With Inlet Screen)
•
Installation Manual
(Check List)
1
Neutralizer
(NC-1)
3
Check the Gas
• Check that the rating plate indicates the
correct type of gas.
• Check that the gas supply line is sized for
157,000 Btuh.
Check the Power
• The power supply required is 120VAC, at 60Hz.
Using the incorrect voltage may result in re or electric shock.
Use Extreme Caution if Using With a Solar Pre-Heater
• Using this unit with a solar pre-heater can lead to unpredictable output temperatures and
possibly scalding. If absolutely necessary, use mixing valves to ensure output temperatures do
not get to scalding levels.
3.
Before Installation
Checkup
• Check the xing brackets and vent pipe yearly for damage or wear. Replace if necessary.
DANGER
Do Not Use Equipment for Purposes Other Than Those Specied
• 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.
WARNING
CAUTION
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 specied in this Installation Manual for use on this appliance. Refer
to the "Vent Pipe Installation" 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.
Improper venting may result in res, 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.
4
4.
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 oors of the structure. When such locations
cannot be avoided, it is recommended that a suitable drain pan, adequately drained, be installed
under the appliance. The pan must not restrict combustion air ow.
• Locate the vent terminal so that there are no obstacles around the termination and so that exhaust
can't accumulate. Do not enclose the termination with corrugated metal or other materials.
• Avoid places where res are common, such as those where gasoline,
benzene and adhesives are handled, or places in which corrosive gases
(ammonia, chlorine, sulfur, ethylene compounds, acids) are present.
Using the incorrect voltage may result in re or cracking.
• Avoid installation in places where dust or debris will accumulate.
Dust may block the air-supply opening, causing the performance of the
device fan to drop and incomplete combustion to occur as a result.
• Avoid installation in places where special chemical agents
(e.g., hair spray or spray detergent) are used.
Ignition failures and malfunction may occur as a result.
• Carbon Monoxide Poisoning Hazard. Do not install this water heater in a
mobile home, recreational vehicle or on a boat.
• The water heater is designed for indoor installation only. Never install it
outdoors or in a bathroom, it may be damaged or a re may be caused.
• Consult with the customer concerning the location of installation.
• Install the water heater in an area that allows for the proper clearances
to combustible and noncombustible construction. Consult the rating
plate on the appliance for proper clearances.
• Do not install the water heater in a place where it may be threatened by
falling objects, such as under shelves.
• The water heater must be installed in a place where supply and exhaust
pipes can be installed as directed.
• Do not install the water heater where the exhaust will blow on outer walls
or material not resistant to heat. Also consider the surrounding trees and
animals.
The heat and moisture from the water heater may cause discoloration of
walls and resinous materials, or corrosion of aluminum materials.
DANGER
WARNING
CAUTION
Prohibited
Prohibited
5
• Avoid installation above gas ranges or stoves.
• Avoid installation between the kitchen fan and stove. If oily
fumes or a large amount of steam are present in the installation
location, take measures to prevent the fumes and steam from
entering in the equipment.
• Install in a location where the exhaust gas ow will not be affected
by fans or range hoods.
• Take care that noise and exhaust gas will not affect neighbors.
Avoid installation on common walls as the unit will make some
operational noises while it is running.
• Before installing, make sure that the exhaust ue termination will
have the proper clearances according to the National Fuel Gas
Code (ANSI Z223.1).
State of California: The water heater must be braced, anchored or strapped to avoid moving during an
earthquake. Contact local utilities for code requirements in your area or call: 1-866-766-7489 and
request instructions.
Be sure to do
Prohibited
Prohibited
CAUTION
The Commonwealth of Massachusetts: 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
6
5.
Installation Clearances
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 – latest edition. In Canada, see NSCNGPIC for detailed requirements.
WARNING
Item
Distance from combustibles
• Maintain the following clearances
from both combustible and
non-combustible materials.
Check Illustration
• If possible, leave 8" (200mm) or more
on either side of the unit to facilitate
inspection.
• If possible, leave 24" (600mm) or more in
front of the unit to facilitate maintenance
and service if necessary.
• If possible, leave 3" (75mm) or more
above and below the vent pipe to facilitate
inspection and repair if necessary.
Securing of space for
repair/inspection
24" (600mm)
or more
Distance from the side
12" (300mm) or more
2" (50mm) or more
4" (100mm) or more
3" (75mm) or more
3" (75mm) or more
8" (200mm)
or more
8" (200mm)
or more
<When the indoor air supply>
• If the unit will be installed in the vicinity of
a permanent kitchen range or stove that
has the possibility of generating steam
that contains fats or oils, use a dividing
plate or other measure to ensure that the
unit is not exposed to air containing such
impurities.
*
The dividing plate should be of noncombustible
material of a width greater than the water
heater.
Exhaust hood
Range
Dividing plate
Water
heater
Cooking Equipment
▲The illustration is an example. Please check with the actual water heater about the position of piping, and form.
7
DescriptionRef
A=
Clearance above grade, veranda, porch,
deck, or balcony
B=
Clearance to window or door that may
be opened
C=
Clearance to permanently closed window
D=
Vertical clearance to ventilated soffit
located above the terminal within a
horizontal distance of 2 feet (61 cm)
from the center line of the terminal
*
E=
Clearance to unventilated soffit
*
F=
Clearance to outside corner
*
G=
Clearance to inside corner
*
H=
Clearance to each side of center line
extended above meter/regulator assembly
3 ft (91 cm) within a height
15 ft (4.5 m) above the
meter/regulator assembly
I=
Clearance to service regulator vent outlet
3 ft (91 cm)
J=
Clearance to nonmechanical air supply
inlet to building or the combustion air inlet
to any other appliance
K=
Clearance to a mechanical air supply inlet
6 ft (1.83 m)
L=
Clearance above paved sidewalk or paved
driveway located on public property
Clearance under veranda, porch, deck,
or balcony
7 ft (2.13 m)†
M=
1
In accordance with the current CSA B149.1 Natural Gas and Propane Installation Code
2
In accordance with the current ANSI Z223.1 / NFPA 54 National Fuel Gas Code
† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single
family dwellings and serves both dwellings.
‡ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
* Clearance in accordance with local installation codes and the requirements of the gas supplier.
Clearance to opposite wall is 24 inches (60 cm).
12 in (30 cm)‡
*
12 in (30 cm)
12 in (30 cm)
36 in (91 cm)
*
*
*
*
*
*
*
*
3 ft (91 cm) above if within
10 ft (3 m) horizontally
*
12 in (30 cm)
12 in (30 cm)
36 in (91 cm)
US Direct Vent
Installations
2
Canadian Direct Vent
Installations
1
Vent Terminal
D
E
B
B
F
B
A
G
H
I
C
B
M
K
J
B
B
L
Air Supply Inlet
Area Where Terminal
is Not Permitted
A
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 NSCNGPIC.
8
DescriptionRef
A=
Clearance above grade, veranda, porch,
deck, or balcony
B=
Clearance to window or door that may
be opened
C=
Clearance to permanently closed window
D=
Vertical clearance to ventilated soffit
located above the terminal within a
horizontal distance of 2 feet (61 cm)
from the center line of the terminal
*
E=
Clearance to unventilated soffit
*
F=
Clearance to outside corner
*
G=
Clearance to inside corner
*
H=
Clearance to each side of center line
extended above meter/regulator assembly
3 ft (91 cm) within a height
15 ft (4.5 m) above the
meter/regulator assembly
I=
Clearance to service regulator vent outlet
3 ft (91 cm)
J=
Clearance to nonmechanical air supply
inlet to building or the combustion air inlet
to any other appliance
K=
Clearance to a mechanical air supply inlet
6 ft (1.83 m)
L=
Clearance above paved sidewalk or paved
driveway located on public property
Clearance under veranda, porch, deck,
or balcony
7 ft (2.13 m)†
M=
1
In accordance with the current CSA B149.1 Natural Gas and Propane Installation Code
2
In accordance with the current ANSI Z223.1 / NFPA 54 National Fuel Gas Code
† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single
family dwellings and serves both dwellings.
‡ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
* Clearance in accordance with local installation codes and the requirements of the gas supplier.
Clearance to opposite wall is 24 inches (60 cm).
12 in (30 cm)‡
*
12 in (30 cm)
36 in (91 cm)
*
*
*
*
*
*
*
*
3 ft (91 cm) above if within
10 ft (3 m) horizontally
*
12 in (30 cm)
4 ft (1.2 m) below or to side
of opening; 1 ft (30 cm)
above opening
36 in (91 cm)
4 ft (1.2 m) below or to side
of opening; 1 ft (30 cm)
above opening
US Non-Direct Vent
Installations
2
Canadian Non-Direct Vent
Installations
1
Vent Terminal
D
E
B
B
F
B
A
G
H
I
C
B
M
K
J
B
B
L
Air Supply Inlet
Area Where Terminal
is Not Permitted
A
* 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 NSCNGPIC.
Clearance Requirements from Vent Terminations to Building Openings
<When supplying combustion air from the indoors (Non-Direct Vent)>
9
6.
Installation
Securing to the wall
IllustrationCheck
4. Drill holes for the remaining four screws.
5. Hang the unit again by the rst screw, and then
insert and tighten the remaining four screws.
6. Take waterproong measures so that water does
not enter the building from screws mounting the
device.
• Make sure the unit is installed securely so that it will
not fall or move due to vibrations or earthquakes.
1. Drill a single screw hole, making sure to hit a stud.
2. Insert and tighten the screw and hang the unit by
the upper wall mounting bracket.
3. Determine the positions for the remaining four screws
(two for the top bracket and two for the bottom), and
remove the unit.
• The weight of the device will be applied to the wall. If the strength of the wall is not sufcient,
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.
• Install the unit on a vertical wall and ensure that it is level.
Locating Screw Holes
Mounting
Structure
• When installing with bare hands, take caution to
not inict injury.
• Be careful not to hit electrical wiring, gas, or water
piping while drilling holes.
Item
CAUTION
Be sure to do
Mounting Bracket
(upper)
Location of Screw Hole
Locating Screw Holes
Installations at Elevations
Above 2,000 ft.
• Adjust the DIP switches as illustrated in the table to
the right if this water heater is installed at an altitude
of 2000 ft. (610m) or higher.
• Disconnect power to the water heater before changing
the DIP switches. Failure to perform this step will result
in a "733" code displayed on the Display Window and
a cease in operation. If this occurs, disconnect, then
reconnect power to the water heater to reset the system.
Anchoring Screw
▲The illustration is an example. Please check with the actual water heater about the position of piping, and form.
* Do not change any other DIP switches.
* High elevation adjustment.
65
2,001 - 4,000 ft (611 - 1,220m)
0 - 2,000 ft (0 - 610m)
ON= OFF=
4,001 - 6,000 ft (1,221 - 1,830m)
6,001 - 8,000 ft (1,831 - 2,440m)
10
Filling the condensate trap with water
DANGER
When initial start up, make sure that you perform the following procedures.
This is to prevent dangerous exhaust gases from entering the building.
Failure to following procedure could result in severe personal injury or death.
After installing the drain pipe, make sure that the area around the unit 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. (During
normal use of the unit, condensate will begin to discharge from the drain pipe within 15 minutes of use.
However, depending on the season and/or installation site conditions, it may take longer.)
11
Maximum Vent Lengths
• This appliance has been designed to be vented
with either 3" (75mm) PVC or CPVC pipe.
Do not exceed the following maximum vent lengths:
* Not including the termination
• Maintain the same vent pipe diameter from the
heater ue to the vent termination. The exhaust
and intake pipes must be the same vent pipe
diameter.
7.
Vent Pipe Installation
(Indoor Installation Only)
WARNING
Be sure to do
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 the U.S. to the National Fuel Gas Code ANSI
Z233.1/NFPA 54 – latest edition, and in Canada, in accordance with NSCNGPI.
No. of Elbows
Max. Straight Vent Length*
4
39' (11.7m)
3
45' (13.5m)
2
51' (15.3m)
1
57' (17.1m)
Pipe diameter 3" (75mm)
• Under normal conditions, this appliance will
not produce an exhaust flue temperature
in excess of 149°F (65°C) and schedule 40
PVC pipe may be used as the vent material.
If required by local code, schedule 40 or 80
CPVC may also be used on this appliance.
Refer to page 13 for additional requirements.
• Make sure the vent system is gas tight and
will not leak.
• Support the vent pipe with hangers at regular
intervals as specied by these instructions or
the instructions of the vent manufacturer.
• Do not common vent or connect more than
one appliance to this venting system.
•
The total vent length including horizontal & vertical
vent runs should be no less than 3' (0.9m).
•
Do not store hazardous or ammable substances
near the vent termination and check that the
termination is not blocked in any way.
• Steam or condensed water may come out
from the vent termination. Select the location
for the termination so as to prevent injury or
property damage.
• If snow is expected to accumulate, take care
the end of the pipe is not covered with snow
or hit by falling lumps of snow.
General Requirements
Clearances
PVC or CPVC has been approved for use on this
appliance with zero clearance to combustibles.
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