Noritz NRC661-DV Installation Manual
NORITZ AMERICA
Installation Manual
CORPORATION
CONDENSING TANKLESS GAS WATER HEATER
(Indoor Installation)
NRC661-DV
Potential dangers from accidents during installation and use are divided into the following three
categories. Closely observe these warnings, they are critical to your safety.
DANGER indicates an imminently hazardous situation which,
DANGER
if not avoided, will result in death or serious injury.
WARNING
CAUTION
WARNING:
causing property damage, personal injury or death.
Prohibited
If the information in this manual is not followed exactly, a re or explosion may result
WARNING indicates a potentially hazardous situation which,
if not avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which,
if not avoided, may result in minor or moderate injury.
Disconnect
Power
Ground
Be sure to do
CAUTION
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.
SBB801K-2
Rev. 04/13
CERTIFIED
R
Low NOx
Approved by
SCAQMD
14 ng/J or 20 ppm
(Natural Gas Only)
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.
*SBB801K*
Included Accessories
1.
The following accessories are included with the unit.
Check for any missing items before starting installation.
Part Shape
Anchoring Screw
Optional Accessories
2.
Remote Controller
(See p. 30)
3" (75mm)
PVC Terminal
VK3-H-PVC
Isolation V alves
(includes pressure
relief valve)
Q’ty
5
Q’ty
1
1
1
each
ShapePart
Owner's Guide, Warranty,
Installation Manual
(this document)
The accessories listed below are not
included with the units, but may be necessary
for installation.
ShapePartPart Shape
Remote Controller
Cord (10ft (3m))
Remote Controller
Cord (26ft (8m))
Bird Screen for
3" (75mm) PVC
VT3-PVCS
Q’ty
1
each
Q’ty
1
1
2
3" (75mm)
Pipe Cover
(PC-1S)
SV Conversion Kit
(#SV-CK-3)
•90 Elbow
(With Inlet Screen)
•
Installation Manual
(Check List)
Note: Additional vent pieces are available; consult the latest product catalogue for details.
1
1
each
Horizontal Hood
Termination PVT-HL
Neutralizer
(NC-1)
2
1
2
Before Installation
3.
DANGER
Checkup
• Check the xing brackets and vent pipe yearly for damage or wear. Replace if necessary.
WARNING
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.
Check the Gas
• Check that the rating plate indicates the
correct type of gas.
• Check that the gas supply line is sized for
120,000 Btuh.
NRC661-DV (eco TOUGH)
120,000 BTU
15,000 BTU
133
505
4.0
1.0 2.4"
15
10.5"
150
2
Check the Power
ANSI Z21.10.3-2011/CSA 4.3-2011
• 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.
CAUTION
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.
3
Choosing Installation Site
4.
* 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.
DANGER
• 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.
WARNING
• 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.
Prohibited
• 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.
CAUTION
• 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.
Prohibited
4
CAUTION
• 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).
Prohibited
Be sure to do
Prohibited
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.
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
5
Installation Clearances
5.
WARNING
Before installing, check for the following:
Install in accordance with relevant building and mechanical codes, as well as any local, state or
national regulations, or in the absence of local and state codes, to the National Fuel Gas Code
ANSI Z223.1/NFPA 54 – latest edition. In Canada, see NSCNGPIC for detailed requirements.
Item
• Maintain the following clearances
from both combustible and
non-combustible materials.
Distance from combustibles
• 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
repair/inspection
above and below the vent pipe to facilitate
Securing of space for
inspection and repair if necessary.
Check Illustration
12" (300mm) or more
4" (100mm) or more
2" (50mm) or more
Distance from the side
8" (200mm)
or more
24" (600mm)
or more
3" (75mm) or more
3" (75mm) 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.
Cooking Equipment
*
The dividing plate should be of noncombustible
material of a width greater than the water
heater.
▲The illustration is an example. Please check with the actual water heater about the position of piping, and form.
6
Exhaust hood
Dividing plate
Range
Water
heater
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.
D
E
L
B
DescriptionRef
Clearance above grade, veranda, porch,
A=
deck, or balcony
Clearance to window or door that may
B=
be opened
C=
Clearance to permanently closed window
Vertical clearance to ventilated soffit
located above the terminal within a
D=
horizontal distance of 2 feet (61 cm)
from the center line of the terminal
E=
Clearance to unventilated soffit
Clearance to outside corner
F=
G=
Clearance to inside corner
Clearance to each side of center line
H=
extended above meter/regulator assembly
I=
Clearance to service regulator vent outlet
Clearance to nonmechanical air supply
J=
inlet to building or the combustion air inlet
to any other appliance
Clearance to a mechanical air supply inlet
K=
Clearance above paved sidewalk or paved
L=
driveway located on public property
Clearance under veranda, porch, deck,
M=
or balcony
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).
C
F
B
G
A
B
B
B
B
J
A
Vent Terminal
Air Supply Inlet
Canadian Direct Vent
Installations
12 in (30 cm)
36 in (91 cm)
3 ft (91 cm) within a height
15 ft (4.5 m) above the
meter/regulator assembly
3 ft (91 cm)
36 in (91 cm)
6 ft (1.83 m)
7 ft (2.13 m)†
12 in (30 cm)‡
1
*
*
*
*
*
H
I
M
K
Area Where Terminal
is Not Permitted
US Direct Vent
Installations
12 in (30 cm)
12 in (30 cm)
12 in (30 cm)
3 ft (91 cm) above if within
10 ft (3 m) horizontally
2
*
*
*
*
*
*
*
*
*
7
Clearance Requirements from Vent Terminations to Building Openings
<When supplying combustion air from the indoors (Non-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.
D
E
L
B
DescriptionRef
Clearance above grade, veranda, porch,
A=
deck, or balcony
Clearance to window or door that may
B=
be opened
C=
Clearance to permanently closed window
Vertical clearance to ventilated soffit
located above the terminal within a
D=
horizontal distance of 2 feet (61 cm)
from the center line of the terminal
E=
Clearance to unventilated soffit
Clearance to outside corner
F=
G=
Clearance to inside corner
Clearance to each side of center line
H=
extended above meter/regulator assembly
I=
Clearance to service regulator vent outlet
Clearance to nonmechanical air supply
J=
inlet to building or the combustion air inlet
to any other appliance
Clearance to a mechanical air supply inlet
K=
Clearance above paved sidewalk or paved
L=
driveway located on public property
Clearance under veranda, porch, deck,
M=
or balcony
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).
C
F
B
G
A
B
B
B
B
J
A
Vent Terminal
Air Supply Inlet
Canadian Non-Direct Vent
Installations
12 in (30 cm)
36 in (91 cm)
3 ft (91 cm) within a height
15 ft (4.5 m) above the
meter/regulator assembly
3 ft (91 cm)
36 in (91 cm)
6 ft (1.83 m)
7 ft (2.13 m)†
12 in (30 cm)‡
1
*
*
*
*
*
H
I
M
K
Area Where Terminal
is Not Permitted
US Non-Direct Vent
Installations
12 in (30 cm)
4 ft (1.2 m) below or to side
of opening; 1 ft (30 cm)
above opening
4 ft (1.2 m) below or to side
of opening; 1 ft (30 cm)
above opening
3 ft (91 cm) above if within
10 ft (3 m) horizontally
2
*
*
*
*
*
*
*
*
*
8
Installation
* Do not change any other DIP switches.
6.
Securing to the wall
• 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 sure to do
be damaged and may become highly dangerous.
• Install the unit on a vertical wall and ensure that it is level.
Item
CAUTION
• 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.
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.
Locating Screw Holes
3. Determine the positions for the remaining four screws
(two for the top bracket and two for the bottom), and
remove the unit.
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
Mounting
device.
IllustrationCheck
Location of Screw Hole
Mounting Bracket
(upper)
Locating Screw Holes
Anchoring Screw
• Make sure the unit is installed securely so that it will
not fall or move due to vibrations or earthquakes.
Structure
• 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.
Above 2,000 ft.
Installations at Elevations
▲The illustration is an example. Please check with the actual water heater about the position of piping, and form.
* High elevation adjustment.
65
0 - 2,000 ft (0 - 610m)
2,001 - 4,000 ft (611 - 1,220m)
4,001 - 6,000 ft (1,221 - 1,830m)
6,001 - 8,000 ft (1,831 - 2,440m)
ON= OFF=
9
Filling the condensate trap with water
When initial start up, make sure that you perform the following procedures.
DANGER
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.)
This is to prevent dangerous exhaust gases from entering the building.
Failure to following procedure could result in severe personal injury or death.
10
7.
Be sure to do
Vent Pipe Installation
(Indoor Installation Only)
WARNING
CARBON MONOXIDE POISONING
Follow all vent system requirements in accordance with relevant local or state regulation,
or, in the absence of local or state code, in the U.S. to the National Fuel Gas Code ANSI
Z233.1/NFPA 54 – latest edition, and in Canada, in accordance with NSCNGPI.
General Requirements
• 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.
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:
Pipe diameter 3" (75mm)
No. of Elbows
4
3
2
1
* 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.
Clearances
PVC or CPVC has been approved for use on this
appliance with zero clearance to combustibles.
Max. Straight Vent Length*
39' (11.7m)
45' (13.5m)
51' (15.3m)
57' (17.1m)
11
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