Noritz America NCC300DV Installation Manual

NORITZ AMERICA

*SBB80Z0*

CERTIFIED

R

Installation Manual

CORPORATION

CONDENSING TANKLESS GAS WATER HEATER

NCC300DV (GQ-C5032WZ-FF US)

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

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

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.

Disconnect
Power

Ground

(Indoor Installation)

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.

SBB80Z0-1

Rev. 08/17

Low NOx Approved by SCAQMD

14 ng/J or 20 ppm

(Natural Gas Only)

FOR USE IN COMMERCIAL OR MANUFACTURED HOME APPLICATIONS.

Installation must conform with local codes, or in the absence of
local codes, the National Fuel Gas Code, ANSI Z223.1/NFPA 54-

latest edition and/or the Natural Gas and Propane Installation

Code CSA B149.1 - latest edition.

When applicable, installation must conform with the Manufactured
Home Construction and Safety Standard, Title 24 CFR, Part
3280 or the Canadian Standard CAN/CSA-Z240 MH Mobile
Homes, Series M86.

Noritz America reserves the right to discontinue, or change at any

time, the designs and/or specications of its products without notice.

Included Accessories

1.

The following accessories are included with the unit.
Check for any missing items before starting installation.

Part Shape

Anchoring Screw

Remote Controller

(See p. 37)

Drain hose

(With clamp)

Optional Accessories

2.

Quick Connect Cord

(QC-2)

Isolation Valves*

(includes pressure

relief valve)

Q’ty

7

1

2

Q’ty

1

1

each

ShapePart

Owner's Guide, Warranty,

Installation Manual

(this document)

Remote Controller

Cord (6ft (2m))

The accessories listed below are not
included with the units, but may be necessary
for installation.

ShapePartPart Shape

Remote Controller

Cord (26ft (8m))

Bird Screen for

4" (100mm) PVC

VT4-PVCS

Q’ty

1

each

1

Q’ty

1

2

Pipe Cover

(PC-7S)

SV Conversion Kit
( SV-CK-4)

•90 Elbow
(With Inlet Screen)

•

Installation Manual

(Check List)

Plastic Rain Cap**

PRC-1

System Controller Unit

SCU-301-12M
SCU-401-12M
SCU-401-24M

Neutralizer

(NT20A)

(For up to 10 water heaters)

1

1

each

1

1

1

4" (100mm)

Horizontal Hood

Termination PVT-HL

Noritz Connect

Wireless Adapter

NWC-ADAPTER

(NAW-1 US)

4"PVC to 5"

SS Vent Adapter

(PVC4XVP5-ADAPT)

System Controller

(SC-301-6M, SC-401-6M)

Note: Additional vent pieces are available; consult the latest product catalogue for details.
* Isolation valves are necessary for ushing the Heat Exchanger.

They allow for easy ushing of the system.
** Not approved for use in Canada.

2

2

1

1

1

Make this distance as
short as possible.
The hot water temperatur
will become unstable as
the pipe length increases.

maximum flow rates of the units.

Distance on sides

Quick Connect
Cord

3.

Quick Connect Multi System Installation

• The Quick Connect Multi System allows the installation of two units together utilizing only the Quick

Connect Cord.

The Quick Connect Cord is 6 ft.(2m) long. Install the units 3-17" (75 - 432mm) apart from each
other to ensure the cord will be able to reach between the units. (See Typical Plumbing diagram).

(If the distance between the two units is too great, not only will the cord not be able to reach,

but the water temperature may also become unstable because of the difference in pipe length

between the two units).

System Diagram

Cord
Connector

Typical Plumbing

Exhaust

Intake

Cord
Connector

Terminal Block

Remote Controller

Remote Controller Cord

G

3-17" (75-432mm)

* When connecting two units, use only a

single remote controller.

Note: Connect the remote

controller to only one
of the units.

Units must be same

model in order to
quick connect.

Gas Supply Piping

Cold Water Supply

Hot Water

• Insulate the hot water piping to prevent heat loss. Insulate and apply heating materials to the
cold water supply piping to prevent heat loss and freezing of pipes when exposed to excessively
cold temperatures.

Quick Connect Cord

Pressure
Relief Valve

Isolation Valve*

e

* Isolation valves are

necessary for flushing
the Heat Exchanger.
They allow for
easy flushing of

the system.

Union

Gas Valve

To drain outletTo drain outlet

Leave enough clearance around the plumbing to apply insulation.
It will be necessary to add bends to the piping to ensure
that this clearanceis available.

The backflow preventer should be placed
upstream of the cold water branch.

Size the piping to allow for the

To drain outlet

Hot Water

Cold Water

3

Before Installation

4.

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 specied 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

300,000 Btuh.

e.g. NCC300DV(GQ-C5032WZ-FF US)

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. Do not use a solar pre-heater with the quick-connect multi-system.

Precautions for Mobile Home Installation

• Verify that the gas supply type matches the gas type listed on the rating plate. If a gas conversion

must be done, follow the instructions listed in the gas conversion kit manual.

• If this product will be installed indoors, usage of the SV conversion kit (SV-CK-4) is prohibited.
Make sure to follow all clearance and venting requirements outlined in this manual.

CAUTION

Do Not Use Equipment for Purposes Other Than Those Specied

• 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.

4

Choosing Installation Site

5.

* 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 installation
locations cannot be avoided, a suitable drain pan, adequately drained, must be installed under the
appliance. The pan must not restrict combustion air ow.

* As with any water heating appliance, the potential for leakage at some time in the life of the product

does exist. The manufacturer will not be responsible for any water damage that may occur.

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.

Prohibited

• 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.

• 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

recreational vehicle or on a boat.

• The manufacturer does not recommend installing the water heater in an
attic due to safety issues.

If you install the water heater in an attic:

•

Make sure the unit will have enough combustion air and proper ventilation.

• Keep the area around the water heater clean. Dust may accumulate

and reduce the performance of the unit's fan. This can result in incomplete

combustion.

• Place the unit for easy access for service and maintenance.

• A drain pan, or other means of protection against water damage, is

required to be installed under the water heater in case of leaks.

5

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.

• Do not install the water heater near staircases or emergency exits.

Install the water heater in an area that allows for the proper clearances

•

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.

•

Do not locate the vent termination directed towards a window or any other
structure which has glass or wired glass facing the termination.

• Avoid installation above gas ranges or stoves.

to

Prohibited

• 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-latest edition) or the Natural Gas and Propane
Installation Code (CSA B149.1).

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.

Prohibited

Be sure to do

Prohibited

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

Installation Clearances

6.

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 the Natural Gas and Propane Installation

Code CSA B149.1 - latest edition for detailed requirements.

Item

• Maintain the following clearances

from both combustible and
non-combustible materials.

Distance from combustibles

In order to facilitate inspection and repair it

is recommended to leave:

• 8" (200mm) or more on either side of the
unit.

• 24" (600mm) or more in front of the unit.

• 3" (75mm) or more above and below the

vent pipe.

repair/inspection

Securing of space for

Check Illustration

Distance from
the side

8" (200mm)
or more

24" (600mm)

or more

12" (300mm)
or more

4" (100mm)
or more

3" (75mm)
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

non-combustible material of a width

greater than the water heater.

Exhaust hood

Dividing plate

Range

Water
heater

7

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 the Natural Gas and Propane Installation Code

CSA B149.1.

I

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 horizontal distance

D=

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).

Canadian Direct Vent Installations

12 in (30 cm)

6 in (15 cm) for appliances

≤ 10,000 Btuh (3kW), 12 in
(30 cm) for appliances > 10,000
Btuh (3kW) and ≤ 100,000 Btuh

(30 kW), 36 in (91 cm) for

appliances > 100,000 Btuh (30 kW)

*

*

*
*
*

Above a regulator within 3 ft (91 cm)

horizontally of the vertical center line of

the regulator vent outlet to a maximum

vertical distance of 15 ft (4.5 m)

6 in (15 cm) for appliances

≤ 10,000 Btuh (3kW), 12 in
(30 cm) for appliances > 10,000
Btuh (3kW) and ≤ 100,000 Btuh

(30 kW), 36 in (91 cm) for

appliances > 100,000 Btuh (30 kW)

6 ft (1.83 m)

7 ft (2.13 m)†

12 in (30 cm)‡

Vent Terminal

Air Supply Inlet

Area Where Terminal
is Not Permitted

1

US Direct Vent Installations

12 in (30 cm)

6 in (15 cm) for appliances

≤ 10,000 Btuh (3kW), 9 in

(23 cm) for appliances > 10,000

Btuh (3kW) and ≤ 50,000 Btuh

(15 kW), 12 in (30 cm) for

appliances > 50,000 Btuh (15 kW)

*

*

*
*
*

**

*

6 in (15 cm) for appliances

≤ 10,000 Btuh (3kW), 9 in

(23 cm) for appliances > 10,000

Btuh (3kW) and ≤ 50,000 Btuh

(15 kW), 12 in (30 cm) for

appliances > 50,000 Btuh (15 kW)

3 ft (91 cm) above if within

10 ft (3 m) horizontally

*

*

2

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

I=

Clearance to service regulator vent outlet

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)

6 in (15 cm) for appliances

≤ 10,000 Btuh (3kW), 12 in
(30 cm) for appliances > 10,000
Btuh (3kW) and ≤ 100,000 Btuh

(30 kW), 36 in (91 cm) for

appliances > 100,000 Btuh (30 kW)

Above a regulator within 3 ft (91 cm)

horizontally of the vertical center line of

the regulator vent outlet to a maximum

vertical distance of 15 ft (4.5 m)

4 ft (1.2 m) below or to side

of opening; 1 ft (300 mm)

above opening

6 in (15 cm) for appliances

≤ 10,000 Btuh (3kW), 12 in
(30 cm) for appliances > 10,000
Btuh (3kW) and ≤ 100,000 Btuh

(30 kW), 36 in (91 cm) for

appliances > 100,000 Btuh (30 kW)

4 ft (1.2 m) below or to side

of opening; 1 ft (300 mm)

above opening

*

*
*
*

**

*

*

*

3 ft (91 cm) above if within

10 ft (3 m) horizontally

*

12 in (30 cm)

US Non-Direct Vent Installation

2

Canadian Non-Direct Vent Installation

1

Vent Terminal

Air Supply Inlet

Area Where Terminal
is Not Permitted

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 the Natural Gas and Propane Installation Code

CSA B149.1.

9

Installation

* Do not change any other dipswitches.

7.

Securing to the wall

• The weight of the device will be applied to the wall. If the strength of the wall is not
sufcient, 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 inict 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 waterproong 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 "73" code displayed on the remote
controller and a cease in operation. If this occurs,
disconnect, then reconnect power to the water heater

Above 2,000 ft.

to reset the system.

Note : Please refer to page 11 for the location of the

dip switch bank.

Installations at Elevations

10

* High elevation adjustment.

5

0 - 2,000 ft (0 - 610m)

2,001 - 4,500 ft (611 - 1,350m)

ON=OFF=

Filling the condensate container with water

30 oz.
850ml

The condensate container can be lled before connecting the vent pipe.

Filling the condensate container before vent pipe installation.

Prior to initial start up, make sure that you ll the condensate container with water.

DANGER

Please follow one of the procedures described below to ensure that the condensate container is lled with water.

1) Fill the condensate container by pouring slowly approx. 30 oz.(850ml) of water into the exhaust accessory
on the top of the appliance as illustrated below.

Or, if the vent pipe has already been installed:

2) After installing the drain pipe, make sure that the area around the appliance 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 water heater, condensate will begin to discharge from the drain pipe within

20 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 ll the condensate container could result in severe personal injury or death.

Intake

Exhaust

Note: The condensate discharged from the water heater has a pH level of approximately 2-3.

If required by local code, the condensate must be neutralized prior to disposal into the sewer system.
Refer to pages 33-34 for additional details.

Location of the dip switch bank

11

8.

Exhaust and
Intake Flue

Vent Pipe

(Indoor Installation Only)

Vent Pipe Installation

WARNING

CARBON MONOXIDE POISONING

Follow all vent system requirements in accordance with relevant local or state regulation, or, in the absence

Be sure to do

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 the Natural Gas and Propane Installation Code CSA B149.1 – latest edition.

WARNING

Venting with PP pipe

• Do not deform the PP pipe when cutting.

• Deburr the cut end so that damage to the gasket is avoided.

• Remove debris from inside the pipe prior to assembly.
Damaged gaskets can cause leakage of dangerous levels of carbon monoxide or property damage

due to condensate leaks.

General Requirements Maximum Vent Lengths

•

• This is a Category IV appliance.
Only vent materials approved for use with

Category IV appliances should be used.

•

Under normal conditions, this appliance will not
produce an exhaust ue temperature in excess
of 149°F (65°C) and schedule 40 PVC pipe may

be

used as the vent material. If the water heater

set

temperature is 160°F (70°C) or higher and there
is a return line to the water heater from either a
recirculation pump or a combination space heating
system, schedule 40/80 CPVC or PP must be used.

Refer to page 14 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 specied 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).

•

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.

This appliance has been designed to be vented
with 4" (100mm) PVC, CPVC or PP pipe.

•

This appliance has been designed to be vented

with 5" (127mm) N-Vent or Category III vent by
using 4" PVC to 5" SS Vent Adapter.
Do not exceed the following maximum vent lengths:

Pipe diameter 4" (100mm) 5" (127mm)

No. of Elbows
4 39' (11.7m) N/A
3 45' (13.5m) 15' (4.5m)
2 51' (15.3m) 30' (9.0m)
1 57' (17.1m) 45' (13.5m)

* Not including the termination

Refer to page 17 for max. vent lengths

when using PVC Concentric Termination.

• The exhaust and intake pipes must be the
same vent pipe diameter.

Clearances

PVC, CPVC or PP has been approved for use on
this appliance with zero clearance to combustibles.

Max. Straight Vent Length*

12

How to tighten the Vent Pipe

1. Continue to insert the Vent Pipe until it reaches to the base

of the unit Exhaust and Intake Flue.

(The Vent Pipe will be inserted approximately 1.6"(40mm).)

2.

Secure the Vent Pipe by tightening the band using a screwdriver
(The tightening torque shall be more than 16 in lb.

Screwdriver

-Flat head

-Box wrench(5/16")

Maximum Vent Length Adjustment Dipswitches

m213

The unit can be adjusted to accommodate longer vent runs; refer to the below table to nd the
maximum vent length based on the number of elbows. Adjust the dip switches according to the vent

condition noted in the tables below.
Note:

By default, the unit has been set to the " 1 short length using 4" (100mm) pipe" condition. When adjusting

the dip switches for longer vent runs, the BTUH input of the appliance will be reduced by up to 2%.

• Disconnect power to the water heater before changing the dip switches. Failure to perform
this step will result in a "73" code displayed on the remote controller and a cease in operation
If this occurs, disconnect, then reconnect power to the water heater to reset the system.

Note : Please refer to page 11 for the location of the dip switch bank.

[Maximum Vent Length Example]

- Two 90° elbows, maximum length = 18 ft. (5.4m)

(with dip switches set at " 1 short length using 4" (100mm) pipe" condition)

- Two 90° elbows, maximum length = 51 ft. (15.3m)

(with dip switches set at " 2 long length using 4" (100mm) pipe" condition)

<Maximum Vent Length and Reduced Input Congurations>

4” Pipe

Vent length* Elbows

Number of

m10234ft

pieces**

3

0.90

1.80

2.70

3.60

4.50

5.40

6.30

7.20

8.10

9.00

9.90

1
2

The BTUH input of the

3

appliance will be reduced

4
5
6
7
8

9
10
11

The BTUH input of the

12

appliance will be reduced

13
14
15
16
17
18
19
20
21

6

9
12
15
18
21
24
27
30
33
36

10.80

39

11.70

42

12.60

45

13.50

48

14.40

51

15.30

54

16.20

57

17.10

60

18.00

63

18.90

* Not including the termination.

4" schedule 80 pipe may also be used on this appliance,
however because the inside diameter is smaller than
schedule 40, the maximum vent length must be shortened.

1

by up to 2%.

2

by up to 2%.

Schedule 80

Schedule 40

Short length using 4" (100mm)pipe

1

Long length using 4" (100mm)pipe

2

**Table assumes straight vent pieces are 3’ (0.9m) each.
Shorter or longer vent pieces may also be used up to the maximum
allowed vent length.

Refer to page 17 for max. vent lengths
when using 4” PVC Concentric Termination.

5” Pipe

Vent length*

0.90

1.80

2.70

3.60

4.50

5.40

6.30

7.20

8.10

9.00

9.90

10.80

11.70

12.60

13.50

Number of

pieces**

1
2
3

appliance will be reduced

4

5
6
7
8

The BTUH input of the

9

appliance will be reduced

10
11
12
13
14
15

ft

3
6

9
12
15
18
21
24
27
30
33
36
39
42
45

Elbows

3

The BTUH input of the

by up to 2%.

4

by up to 2%.

* Not including the termination.

Short length using 5" (127mm)pipe

3
4

Long length using 5" (127mm)pipe

.

Do not change any other dipswitches.

Vent length condition.

Short length using 4" (100mm)pipe

1

Long length using 4" (100mm)pipe

2

Short length using 5" (127mm)pipe

3

Long length using 5" (127mm)pipe

4

ON=OFF=

78

Do not change any other dipswitches.

Vent Material

4

PVC / CPVC pipe

PP pipe

ON=OFF=

The power must be unplugged when adjusting
the dip switches to switch the airow amount.

13

PVC / CPVC / PP

Venting With PVC, CPVC or PP

bird screen must be installed on the vent terminations to prevent debris or animals from entering the

This appliance can be vented with non cellular core plastic pipe materials as specified in the below table.
Vent installations in Canada which utilize plastic vent systems must comply with ULC S636.

Exhaust Vent/Air Intake

* Polypropylene : Only listed manufacture specified vent parts may be used for this appliance.
Refer to the manufacture's literature for detailed information.

Approved Vent Manufacture

Centrotherm - lnnoFlue

** Applicable vent termination are "90 degree elbow" or "Tee type".
Concentric vent termination of polypropylene are prohibited.
*** When attaching polypropylene vent materials to the water heater,
a special adapter must be used.

Item Material United States Canada

Pipe Cement/Primer

Note: Use of cellular core PVC (ASTM F891), cellular core CPVC, or
Radel (polyphenylsulfone) in non-metallic venting system is prohibited.

Installation Instructions

• Use only solid PVC / CPVC (schedule 40/80) or PP pipe. Cellular foam core piping is not allowed.

• Covering non-metallic vent pipe and fittings with thermal insulation is prohibited.

4" schedule 80 pipe may also be used on this appliance, however because the inside diameter is
smaller than schedule 40, the maximum vent length must be shortened.

•• In Canada, plastic vent systems must be certified to ULC S636. The components of the certified
vent system must not be interchanged with other vent systems or unlisted pipe/fittings.

• In Canada, specified primers and glues of the ULC S636 certified vent system must be from a
single system manufacturer and not intermixed with other system manufacturer’s vent system parts.

• Follow all general venting guidelines as outlined on this page.

•

PVC, CPVC or PP pipe has been approved for use on this appliance with zero clearance to combustibles.

• The pipe shall be installed so that the first 3’ (0.9m) of pipe from the appliance flue outlet is readily
accessible for visual inspection.

• When preparing and assembling the pipe, follow instructions as provided by the pipe

In general, the following practices must be observed:

o Squarely cut all pieces of pipe.
o Remove all burs and debris from joints and fittings.
o All joints must be properly cleaned, primed, and cemented. Use only cement and primer

approved for use with the pipe material as outlined in the above table.

Schedule 40/80 PVC ANSI/ASTM D1785

PVC-DW

Schedule 40/80 CPVC ANSI/ASTM F441

Polypropylene*

R

Single Wall Pipe (4”) : ISVL04xx(UV), ISEP04xx

®

PP

Elbow : ISELL0487(UV), ISEL0445
Termination** : ISELL0487UV, ISTT0420
Bird Screen : IASPP04
4" PP Adapter*** : ISAAN0404

V ANSI/ASTM D2665

PVC ANSI/ASTM D2564

CPVC ANSI/ASTM F493

Parts#

CSA B137.3
CSA B181.2
CSA B137.3

Centrotherm-lnnoFule

(certified ULC 636S)

U

LC S636 Certified

Materials Only

4" PP Adapter

ISAAN0404

®

manufacturer.

CARBON MONOXIDE POISONING

WARNING

Failure to properly seal the vent system could
cause flue products to enter the living space.

All piping must be fully supported. Use pipe hangers at a minimum of 3’ (0.9m) intervals. Do not use

•

the water heater to support the vent piping.

•

When attaching the piping to the water heater, use the appropriate primer and cement to ensure a proper seal.

•A

piping. These screens are not supplied with the water heater and must be purchased separately,

Vent Material

4"(100mm) PVC or CPVC

Centrotherm - 4"(100mm) PP

Bird Screen Parts #

VT4-PVCS

IASPP04

14

Vent Pipe Installation

3 ft. Min.

FirestopFirestop

Firestop/Support

Roof
Flashing

Roof
Flashing

Hanger

Strap

**1'

Minimum

Support

Intake

Exhaust

12" over maximum
snow level
or 24", whichever
is greater.

12" over maximum
snow level
or 24", whichever
is greater.

Insert Bird

Screen* in
End of
90 Elbow

Storm
Collar

Storm
Collar

**1' minimum recommended,
but not required.

*

Not supplied with water heater,

order separately.

Insert Bird
Screen* in
End of
90 Elbow

Slope the

Vent Upward

V

ertical Vent Termination - PVC, CPVC or PP Material

Horizontal Vent Termination - PVC/CPVC Material Only (when using PVT-HL termination)

•

Make sure to keep a distance of 3' (0.9m) or wider between the intake and exhaust when installing the vent piping.
If 3’ (0.9m) distance between Intake and Exhaust cannot be ensured, the installation can be carried out only
in the installation method shown in page 16.

•

Terminate at least 12" (300mm) above grade or above snow line.

•

Slope the horizontal vent 1/4" upwards for every 12" (300mm) toward the termination.

•

Use a condensation drain if necessary.

•

In the Commonwealth of Massachusetts a carbon monoxide detector is required for all side wall horizontally vented
gas fuel equipment. Please refer to Technical Bulletin TB 010606 for full installation instructions.

When choosing intake and exhaust terminations, you must use the
same type of elbow (i.e. both 90° elbows).
This will help with proper combustion by putting both terminations in
the same pressure zone.

Intake

4" (100mm)

Interior Wall

Ceiling

Exhaust

4" (100mm)

Slope the Vent

Upward

Hanger Straps

* 1' Minimum recommended, but not required.
** 4" (100mm) pipe and 4"×4"

couplings

require when using PVT-HL.

* 1' Minimum

When choosing intake and exhaust terminations, you must use the same type of
elbow (i.e. both 90 - elbows).
This will help with proper combustion by putting both terminations in the same pressure zone.

Ӎ 3ft. Min

Intake

Exhaust

Exterior Wall

PVT-HL

4" (100mm)

12"(300mm)

above grade or

above snow line

**

4" x 4" coupling

The PVC/CPVC elbow may be used in place of
PVT-HL as the horizontal vent termination.

•

•

•

•

•

•

•

•

As illustrated on the left, make sure to keep a distance
of 3' (0.9m) or wider between the intake and exhaust
when installing the vent piping.

Terminate at least 3’ (0.9m) from the combustion air
intake of any appliance and any other building opening.

Enclose exterior vent systems below the roof line to limit
condensation and protect against mechanical failure.

When the vent penetrates a floor or ceiling and is not
running in a fire rated shaft, a firestop and support is
required.

When the vent termination is located not less than
8' (2.4m) from a vertical wall or similar obstruction,
terminate above the roof at least 2' (0.6m), but not
more than 6' (1.87m), in accordance with the National
Fuel Gas Code ANSI Z223.1/NFPA 54 or Natural Gas
and Propane Installation Code CSA B149.1.

Provide vertical support every 3' (0.9m) or as required
by the vent pipe manufacturer's instructions.

A short horizontal section is recommended to prevent
debris from falling into the water heater.

When using a horizontal section, slope the horizontal
vent 1/4” upwards for every 12” (300mm) toward the
termination to drain condensate.

When using 4" PP pipe

4" PP Adapter
ISAAN0404

4" pipe

4" pipe

When using 4" PVC/CPVC pipe

4"x4" coupling

15

Vent Pipe Installation

Alternate Horizontal V

* When 3’
* Can not use Hood termination (PVT
* Insert the bird screen. 90° elbow vertical setting (downward).
* Ensure at least 3ft (0.9m) or more distance between the near edge of the air intake pipe or exhaust pipe to the
inside corner of a wall.
* Intake and exhaust should face the same direction. Intake and exhaust should keep the same pressure zone.

ent Termination- PVC, CPVC or PP Material

(0.9m) distance between Intake and Exhaust cannot be ensured.

6.3"

-HL)

Exhaust

Intake

When using 4" PVC/CPVC pipe

4" pipe

4"x4" coupling

When using 4" PP pipe

4" pipe

4" PP Adapter
ISAAN0404

Interior View

6.3"

Interior View

6.3"

Ӎ

3" Min

between outside

㸦

wall and termination)

Ӎ3" Min

(between outside

wall and termination)

Ӎ

3" Min

between outside

㸦

wall and termination)

Exterior View

Exterior View

Intake

Exhaust

Ӎ2ft. Min

Exhaust

Intake

Ӎ1ft. Min

Ӎ1ft. Min

Ensure at least 2ft (0.6m) or more distance

•

between intake pipe and exhaust pipe.
The distance is measured at inside of pipe
to inner dimension.

Upper side is exhaust, lower side is intake.

•

The reverse orientation is not allowed.

Ensure at least 1ft (0.3m) or more distance

•

between intake pipe and exhaust pipe.
The distance is measured at the outlets of
intake port (terminal) and exhaust port (terminal).

The side distant from wall is intake, the side

•

near the wall is exhaust.
The reverse orientation is not allowed.

Ensure at least 1ft (0.3m) or more distance

•

between intake pipe and exhaust pipe.
The distance is measured at inside of pipe to
inner dimension.

16

Interior View

Exterior View

WARNING

•

If the distance between the air inlet and exhaust vent terminations is too short, the water heater
will draw in the exhaust gases through the intake. There is a risk of inadequate combustion air
for the water heater, increasing Carbon Monoxide (CO) emissions and noise due to vibration.

•

Termination elbows must be oriented vertically, pointing directly downward. Attempts to prevent
exhaust air from entering the air inlet by angling termination elbows in directions other than
directly downward will increase the risk of freezing.

•

Reversing the air intake and exhaust pipes is not allowed.
Carbon Monoxide (CO) emissions and noise due to vibration will increase.

4" (100mm ) PVC Concentric Termination

IPEX Concentric Vent Kits : 196021

4" (100mm)
Intake

Hanger

Straps

4" (100m

m

Exhaust

)

Slope the
Vent Upward

4" pipe

4"x4" coupling

Horizontal

Plastic Rain Cap**
(PRC-1)

**Not supplied with water
heater, order separately.

4" pipe
> 1 ft. Min.

=

Strap

1" (25mm) to
2" (50mm)

Insert Bird Screen **
in End of Termination

** Not supplied with
water heater,
order separately.

The concentric termination may be shortened,

•

but not lengthened from its original factory supplied length.
4" (100mm) PVC or CPVC pipe may be used with

•

the concentric termination.
Maintain the same vent pipe diameter from the
water heater flue to the termination.

Do not exceed the maximum vent lengths as

•

specified in this section.
Use maximum 6" (150mm) section of pipe to make the

•

connection between the reducing couplings and the
Exhaust and Intake Flue of the Water Heater.

There must be a 1" (25mm) to 2" (50mm) clearance

•

between the outside wall and the air intake section
of the termination as illustrated on the left.

Install a securing strap to prevent movement of the termination.

•

Terminate at least 12" (300mm) above grade or above snow line.

•

For vertical installation, terminate at least 7' (2.1m)

•

above a public walkway, 6' (1.8m) from the combustion
air intake of any appliance, and 3' (0.9m) from any
other building opening, gas utility meter, service
regulator etc.

Slope the horizontal vent 1/4" upwards for every 12" (300mm).

•

Use a condensation drain if necessary.

•

In the Commonwealth of Massachusetts a carbon

•

monoxide detector is required for all side wall
horizontally vented gas fuel equipment.
Please refer to Technical Bulletin TB 010606 for full
installation instructions.

12"(30cm)

4"(100mm)
Intake*

4"(100mm)
Exhaust*

Vertical

No. of
Elbows

* Not including the concentric termination.

4" (100mm) PVC or CPVC

Max. Straight Vent Length*

4
3
2
1

30' (9.0m)
36' (10.8m)
42' (12.6m)
48' (14.4m)

4" pipe

4"x4" coupling

Maximum Vent Length Adjustment Dip switches.

<Maximum Vent Length and Reduced Input Configurations>

4” Pipe

Vent lengthElbows

Number of

m10234ft

pieces*

3

0.90

1

6

1.80

2

The BTUH input of the

9

2.70

12

3.60

15

4.50

18

5.40

21

6.30

24

7.20

27

8.10

30

9.00

33

9.90

36

10.80

39

11.70

42

12.60

45

13.50

48

14.40

51

15.30

54

16.20

* Table assumes straight vent pieces are 3’ (0.9m) each.
Shorter or longer vent pieces may also be used up to the maximum
allowed vent length.

appliance will be reduced

3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18

1

by up to 2%.

The BTUH input of the

appliance will be reduced

2

by up to 2%.

1
2

Short length using 4" (100mm)pipe

Long length using 4" (100mm)pipe

17