Rheem XP75T12UHN100U0 Mode d'emploi

Catégorie
Chauffe-eau
Taper
Mode d'emploi
COMMERCIAL HIGH EFFICIENCY COMMERCIAL HIGH EFFICIENCY
WATER HEATERWATER HEATER
USE & CARE MANUALUSE & CARE MANUAL
AP23779
DO NOT destroy this manual.
Please read carefully and keep in a
safe place for future reference
WARNING
If the information in these
instructions is not followed exactly,
a fire or explosion may result
causing property damage, personal
injury or death.
FOR YOUR SAFETY!
DO NOT store or use gasoline,
other flammable vapors or liquids
or other combustible materials
in the vicinity of this or any other
appliance. Doing so may result in
a explosion or fire.
-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
home.
Immediately call your gas
supplier from a neighbor's phone.
And follow the gas supplier's
instructions.
If you cannot reach your gas
supplier, call the fire department.
DO NOT return to your home until
authorized by the gas supplier or
fire department.
-ALWAYS REFER TO THIS MANUAL
Installation and service must be
performed by a qualified installer,
service agency, or gas supplier.
D
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Important Safety Information
General Safety Precautions ��������������������������������������������������� 2–5
Product Information
Components Diagram �����������������������������������������������������������������6
Installation
Location ��������������������������������������������������������������������������������������7
Thermal Expansion ��������������������������������������������������������������������������������������8
Water Connections ���������������������������������������������������������������������������������������8
To Fill the Water Heater �������������������������������������������������������������������������������8
Gas Supply ����������������������������������������������������������������������������������������������������9
Leak Testing �������������������������������������������������������������������������������������������������� 9
Condensate ���������������������������������������������������������������������������������������������������9
High Altitude ������������������������������������������������������������������������������������������������10
Wiring ����������������������������������������������������������������������������������������������������������10
Typical Installation ��������������������������������������������������������������������������������������11
Space Heating Connections ����������������������������������������������������������������������12
Venting and Combustion Air Inlet ���������������������������������������������������� 13 - 31
Check List ����������������������������������������������������������������������������������������������������32
Operation
Lighting Instructions ����������������������������������������������������������������������������������33
Safety Precautions �������������������������������������������������������������������������������������34
User Interface
Start Up ����������������������������������������������������������������������������������� 35
Temperature Adjustment ����������������������������������������������������������35
Schedule Settings���������������������������������������������������������������������36
Time/Date Settings �������������������������������������������������������������������36
WiFi Status �������������������������������������������������������������������������������37
Alarms and Service Alerts ��������������������������������������������������������38
Maintenance
Routine Preventive Maintenance ��������������������������������������������� 39
Seasonal Operation ������������������������������������������������������������������39
Venting System ������������������������������������������������������������������������� 39
Before You Call For Service
Troubleshooting Tips ���������������������������������������������������������� 40, 41
Error Codes ������������������������������������������������������������������������ 42- 47
Replacement Parts
Instructions For Placing a Parts Order 48
Wiring and Schematic Diagrams ......................................49
How to Obtain Service Assistance ....................................52
2
CONTENTS
Your safety and the safety of others are very important.
There are many important safety messages in this manual
and on your appliance. Always read and follow all safety
messages.
This is the safety alert symbol. Recognize this
symbol as an indication of importan safety
information! This symbol alerts you to safety
hazards that could result in physical harm or
death.
All safety messages will follow the safety alert symbol and
either the word “DANGER, “WARNING,” “CAUTION,” or
“NOTICE.
These words mean:
READ ALL SAFETY INFORMATION
FOR YOUR RECORDS:
Write the model and serial numbers here:
You can find them on a label on the appliance.
Staple sales slip or cancelled check here.
Proof of the original purchase date is needed to obtain service
under the warranty.
DANGER:
NOTICE:
!
CAUTION:
!
WARNING:
An imminently hazardous
situation that will result in
death or serious injury.
A potentially hazardous
situation that can result in
death or serious injury and/or
damage to property.
A potentially hazardous
situation that may result in
minor or moderate injury.
Attention is called to observe a
specified procedure or maintain
a specific condition.
!
3
GENERAL SAFETY PRECAUTIONS
To meet commercial water use needs, the temperature on
this water heater is adjustable up to 185°F (85°C). However,
water temperatures over 125°F (52° C) can cause severe
burns instantly or death from scalds. This is the preferred
starting point for setting the control for supplying general
purpose hot water.
Safety and energy conservation are factors to be considered
when setting the water temperature. The most energy
efficient operation will result when the temperature setting is
the lowest value that satisfies the needs consistent with the
application.
Maximum water temperatures occur just after burner
has shut off. To find the temperature of the hot water
being delivered, turn on a hot water faucet, and place
a thermometer in the hot water stream, and read the
thermometer.
The following chart details the relationship of water
temperature and time to scald injury and may be used as
a guide in determining the safest water temperature for
your applications.
The temperature of the water in the heater can be regulated
by setting the temperature on the display (see "User
Interface" section). To comply with safety regulations the
water heater temperature was adjusted to lowest setting
before the water heater was shipped from the factory. The
illustration information on "User Interface" section shows the
display and how to adjust the water temperature.
DANGER:
Hotter water increases the potential for hot water SCALDS.
NOTICE:
Mixing valves are recommended for reducing point of
use water temperature by mixing hot and cold water in
branch water lines. It is recommended that a mixing valve
complying with the Standard for Temperature Actuated
Mixing Valves for Hot Water Distribution Systems, ASSE
1017 be installed. See Water Connections for more details.
For additional information, contact a licensed plumber or
the local plumbing authority.
DANGER
!
HOT
BURN
Water temperature over 125°F (52°C)
can cause severe burns instantly or
death from scalds.
Children, disabled and elderly persons
are at greatest risk of being scalded.
See instructions manual before setting
temperature of water heater.
Feel water Before bathing or showering.
Temperature limiting valves are
available, see manual.
Water Temperature Time to Produce Serious Burn
120° F (49°C) More than 5 minutes
125° F (52°C) 1
1
/
2
to 2 minutes
130° F (54°C) About 30 seconds
135° F (57°C) About 10 seconds
140° F (60°C) Less than 5 seconds
145° F (63°C) Less than 3 seconds
150° F (66°C) About 1
1
/
2
seconds
155° F (68°C) About 1 second
Table courtesy of Shriners Burn Institute
TIME / TEMPERATURE RELATIONSHIPS IN SCALDS
See Section "User Interface" for setting the temperature
!
Status: Standby
StatusSettings
warm hot very hot
Disable
120°
Service
4
GENERAL SAFETY PRECAUTIONS
Be sure to read and understand the entire Use and Care Manual before attempting to install or operate this water heater. It may
save you time and money. Pay particular attention to the Safety Instructions. Failure to follow these warnings could result in serious
bodily injury or death. Should you have problems understanding the instructions in this manual, or have any questions, STOP, and
get help from a qualified service technician, or the local gas utility.
Venting:
!
DANGER:
Failure to properly vent the water heater to the outdoors as
outlined in the "Venting and Combustion Air Inlet" section of
this manual can result in unsafe operation of the water heater.
To avoid the risk of fire, explosion, or asphyxiation from carbon
monoxide, never operate this water heater unless it is properly
vented and has adequate air supply for proper operation. Be sure
to inspect the Venting and Combustion Air Inlet section for proper
installation at initial start-up and, at least, annually, thereafter.
Refer to the "Maintenance" section of this manual for more
information regarding vent system inspections.
!
!
FLAMMABLES
Flammable Vapors
FIRE AND EXPLOSION HAZARD
Can result in serious injury or death.
Do not store or use gasoline or other flammable vapors and liquids
in the vicinity of this or any other appliance. Storage or use of gasoline
or other flammable vapors or liquids in the vicinity of this or any other
appliance can result in serious injury or death.
WARNING
Flammable Materials:
!
WARNING:
Gasoline, as well as other flammable materials and liquids
(which include but are not limited to adhesives, solvents, paint
thinners, etc.), and the vapors they produce are extremely
dangerous. DO NOT handle, use, or store gasoline or other
flammable or combustible materials anywhere near or in the
vicinity of a water heater or any other appliance. Be sure to
read and follow the warning label pictured below and other
labels on the water heater and in this manual. Failure to do so
can result in property damage, bodily injury, or death.
Natural Gas and Lique-
fied Petroleum Safety
!
DANGER:
LIQUEFIED PETROLEUM MODELS Propane (LP) gas, must be
used with great caution.
It is heavier than air and will collect first in lower areas
making it hard to detect at nose level.
Make sure to look and smell for LP leaks before
attempting ignition of the water heater. Use a soapy
solution to check all gas fittings and connections.
Bubbling at a connection indicates a leak that must be
corrected.
When smelling to detect an LP leak, be sure to sniff near
the floor too.
Gas detectors are recommended in LP applications
and their installation should be in accordance with the
manufacturer's recommendations and local laws, rules,
regulations, or customs.
It is recommended that more than one method be used
to detect leaks in LP applications.
IF LP GAS IS PRESENT OR SUSPECTED:
DO NOT attempt to find the cause yourself;
DO NOT try to light any appliance;
DO NOT touch any electrical switch;
DO NOT use any phone in your building.
Leave the building immediately and make sure your
family and pets leave also.
Leave the doors open for ventilation and contact the
gas supplier, a qualified service agency or the fire
department.
Stay away from the house (or building) until the service
call has been made, the leak is corrected and a qualified
agency has determined the area to be safe.
!
WARNING:
Both LP and natural gas have an odorant added to help
detection. Some people may not physically be able to smell or
recognize this odorant. If unsure or unfamiliar about the smell
associated with LP or natural gas, ask the gas supplier. Other
conditions, such as "Odorant Fade", which causes the odorant
to "fade" or diminish in intensity can also hide or camouflage
a gas leak.
5
GENERAL SAFETY PRECAUTIONS
!
DANGER:
Water heaters utilizing Liquefied Petroleum gas (LP) are
different from natural gas models. A natural gas heater will
not function safely on LP gas and vice versa. No attempt
should ever be made to convert a heater from natural gas to
LP gas. To avoid possible equipment damage, personal injury
or fire: DO NOT connect this water heater to a fuel type not in
accordance with the unit's data plate. Propane for propane
units; natural gas for natural gas units. These units are not
certified for any other type fuel.
!
WARNING:
LP appliances should not be installed below-grade (for
example, in a basement) if such installation is prohibited by
federal, state, or local laws, rules, regulations or
customs.
Electrical Safety
DANGER:
Shock Hazard – Make sure the electrical power to the
water heater is off to avoid electric shock that will result
in death or serious personal injury.
WARNINGS:
For your safety, the information in this manual must
be followed to minimize the risk of fire, explosion, or
electric shock that can result in death, personal injury,
and/or property damage.
Field wiring connections and electrical grounding must
comply with local codes or, in the absence of local
codes, with the latest edition of the National Electrical
Code, ANSI/NFPA 70, or in Canada, Canadian Electrical
Code, CAN/CSA C22.1, Part 1.
CAUTIONS:
Label all wires prior to disconnecting for service. Wiring
errors can cause dangerous and improper operation.
Verify correct operation after servicing.\
For your safety, burner inspection and cleaning should
be performed only by qualified service personnel.
Make certain the power to the water heater is OFF
before removing the unit cover panel. Exposed electrical
components and moving parts can cause personal
injuries.
For your safety, DO NOT attempt repair of electrical
wiring, gas piping, remote control, burners, vent
connectors, or other safety devices. Refer repairs to
qualified service personnel.
FOR INSTALLATIONS IN THE
STATE OF CALIFORNIA
California Law requires that all new and replacement water
heaters, and all existing commercial water heaters, must be
braced, anchored, or strapped to resist falling or horizontal
displacement due to earthquake motion. At a minimum,
any water heater shall be secured in accordance with the
California Plumbing Code, or modifications made thereto
by a city, county, or city and county pursuant to Section
17958.5. Generic instructions for California titled “Guidelines
for Earthquake Bracing Commercial Water Heaters” can be
obtained by:
Writing the California, Department of General Services,
Division of State Architect, 1102 Q Street, Suite 5100,
Sacramento, CA 95814
• Calling (916) 445-8100
• Following web address:
https://www�dgs�ca�gov/-/media/Divisions/DSA/Publications/
gas_shutoff/waterheaterbracing
Inspect Shipment
Carefully inspect the water heater for damage before
proceeding with the installation. Of specific interest should
be combustion air-inlet piping assembly, exhaust-tee, or
damage to blower-valve assembly. If you find damage,
DO NOT install or attempt any repair to the water heater.
Contact the manufacturer as detailed under "HOW TO OBTAIN
ASSISTANCE".
6
COMPONENTS DIAGRAM
Jacket
Anode
Anode
Anode
Leak Sensor
Side Outlet
Side Inlet Temperature
and Pressure
Relief Valve
Upper
Thermistor
Drain Valve
Leak Sensor
Exhaust
Tee Assy
Pressure
Switch
(Intake)
Front Panel
Assy
Blower
Side Panel
Air Intake
Pressure Switch
Proof of Fan
Ignition Control
Exhaust
Tee Assy
Transformer Box
Gas Inlet
Lower
Thermistor
Front View
Touch Display
Top View Back Iso View
Status: Standby
StatusSettings
warm hot very hot
Disable
120°
Service
7
INSTALLATION
Location
This water heater must be installed in accordance with these instructions, local codes, utility company requirements, and/or in
the absence of local codes, use the latest edition of the American National Standard/National Fuel Gas Code for US and CAN/CSA
B149 - Natural Gas and Propane Installation Code for Canada. A copy can be purchased from the American Gas Association, 400N.
Capitol Street NW, Washington, DC 20001 as ANSI standard C223.1 or National Fire Protection Association, 1 Batterymarch Park,
Quincy, MA 02269 as booklet NFPA 54. for US and Canadian Standards Association, 5060 Spectrum Way, Mississauga, Ontario
L4W5N6 for Canada.
The water heater should not be located in an area where leakage
from the tank or connections will result in damage to the area
adjacent to the heater or to lower floors of the structure.
When such areas cannot be avoided it is recommended that a
suitable drain pan, adequately drained, must be installed under
the water heater.
The auxiliary drain pan installation MUST conform with local
codes.
The water heater must be positioned in the drain pan as shown.
Ensure that the condensate-tee is located inside the drain pan.
The recommended minimum drain pan sizes are 28" diameter for
50Gal and 32" diameter for 75Gal water heaters
Drain pan kits are available from the store where the water
heater was purchased, or any water heater distributor.
Make certain the floor underneath the water heater is strong
enough to sufficiently support the weight of the water heater
once it is filled with water.
This gas-fired water heater or any other appliance should not
be installed in a space where liquids which give off flammable
vapors are to be used or stored. Such liquids include gasoline,
LP gas (butane or propane), paint or adhesives, thinners, solvents
and/or combustible removers.
WARNING:
Because of natural air movement in a room or other
enclosed space, flammable vapors can be carried some
distance from where liquids which give off flammable vapors
are to be used or stored. The open flame of the water heater’s
main burner can ignite these vapors creating a shut down
condition which will not allow the water heater to ignite.
Rheem Water Heating FVIR certified gas water heaters can
be installed on a residential garage floor without the use of
an 18 in. (46 cm.) stand in accordance with the National Fuel
Gas Code, ANSI Z223.1/NFPA 54, unless otherwise directed by
State and Local code requirements. The water heater must be
located so it is not subject to physical damage, for example, by
moving vehicles, area flooding, etc.
IMPORTANT: DO NOT install the water heater in a location where
it may be subjected to ambient temperatures exceeding 125°F
(52°C).
The water heater should be installed so as to minimize the
length of plastic vent and combustion air-inlet pipe and the
number of vent and combustion air-inlet connection fittings
required.
See Vent and Combustion Air-Inlet Section for vent system
requirements.
Hot water lines should be insulated to conserve water and
energy.
Protect the water heater and water lines from exposure to
freezing temperatures.
DO NOT install this water heater outdoors.
Minimum clearances from combustible construction:
Front Sides Rear Top
5 In.
(12.7 cm)
0 In.
(0 cm)
0 In.
(0 cm)
15 In.
(30.5 cm)
The Exhaust Tee located on the right front of the unit will require additional side
clearance of approximately 2.75" from the water heater.
"Front" Clearance dimension is measured from the water heater
jacket to the closet door.
"Top" clearance dimension is measured from the jacket top of
the water heater to the ceiling.
NOTICE:
For proper operation and maintenance, a minimum
clearance of 1.5 inches (3.8 cm) must be provided from
the combination temperature and pressure relief valve to
any wall or object.
WARNING:
Combustible construction refers to adjacent walls and
ceilings and should not be confused with combustible or
flammable products and materials. Combustible and/or
flammable products and materials should never be stored in
the vicinity of this or any gas appliance.
DRAIN PAN
8
INSTALLATION
If the water heater is to be installed directly on carpeting,
the water heater shall be installed on a metal or wood
panel extending beyond the full width and depth of the
water heater by at least 3 in. (7.6 cm) in all directions or, if
the water heater is to be installed in an alcove or closet, the
entire floor must be covered by a wood or metal panel.
CORROSIVE ATMOSPHERES
The air in beauty shops, dry cleaning establishments,
photo processing labs, and storage areas for liquid and
powdered bleaches or swimming pool chemicals often
contain halogenated hydrocarbons.
An air supply containing halogenated hydrocarbons may
be safe to breathe, but when it passes through a gas
flame corrosive elements are released that will shorten
the life of any gas burning appliance.
Propellants from common spray cans or gas leaks from
A/C and refrigeration equipment are highly corrosive after
passing through a flame.
The water heater warranty is voided when failure of the
heater is due to operation in a corrosive atmosphere.
THERMAL EXPANSION
Determine if a check valve exists in the inlet water line.
It may have been installed in the cold water line as a
separate back flow preventer, or it may be part of a
pressure reducing valve, water meter or water softener.
A check valve located in the cold water inlet line can
cause what is referred to as a ”closed water system”.
A cold water inlet line with no check valve or back flow
prevention device is referred to as an ”open” water
system.
As water is heated, it expands in volume and creates an
increase in the pressure within the water system. This
action is referred to as ”thermal expansion”. In an ”open”
water system, expanding water, which exceeds the
capacity of the water heater, flows back into the city main
where the pressure is easily dissipated.
A ”closed water system”, however, prevents the
expanding water from flowing back into the main supply
line and the result of ”thermal expansion” can create
a rapid, and dangerous pressure increase in the water
heater and system piping. This rapid pressure increase
can quickly reach the safety setting of the relief valve,
causing it to operate during each heating cycle. Thermal
expansion, and the resulting rapid, repeated expansion
and contraction of components in the water heater and
piping system can cause premature failure of the relief
valve and possibly the heater itself. Replacing the relief
valve will not correct the problem!
The suggested method of controlling thermal expansion is
to install an expansion tank in the cold water line between
the water heater and the check valve. The expansion tank
is designed with an air cushion built in that compresses
as the system pressure increases, thereby relieving the
over pressure condition and eliminating the repeated
operation of the relief valve. Other methods of controlling
thermal expansion are also available. Contact your installing
contractor, water supplier, or plumbing inspector for
additional information regarding this subject.
WATER CONNECTIONS
Refer to illustration on page 12 for suggested typical
installation. The installation of unions or flexible connectors
is recommended on the hot and cold water connections
so that the water heater may be easily disconnected for
servicing if necessary. If flexible water connections are
used, they must comply with the standard for flexible Water
Connectors, ASME A112.18.6/CSA-B125.6. The HOT and
COLD water connections are clearly marked on the water
heater. Install a shutoff valve in the cold water line near the
water heater.
IMPORTANT
All models are equipped with front and side panels, it is
recommended that the hot and cold water piping have a
minimum vertical height of 10 inches (25.4 cm) from the
top of the water heater before transitioning into any elbow.
This vertical height is needed in order to provide adequate
clearance for Side Panel installation and removal.
To gain access to the hot and cold water connections
the side panels need to be removed. The side panels are
secured on the top of the water heater with fastening
pegs (see illustration). Pull the side panels either
outwards or upwards to release panels from pegs.
RELIEF VALVE
The pressure rating of the relief valve must not exceed 150
psi (1,034 kPa), the maximum working pressure of the water
heater as marked on the rating plate.
The Btu/h rating of the relief valve must equal or exceed the
Btu/h input of the water heater as marked on its rating plate.
Position the outlet of the relief valve above a suitable open
drain to eliminate potential water damage. Piping used
should be of a type approved for hot water distribution.
The discharge line must be no smaller than the outlet
of the valve and must pitch downward from the valve to
allow complete drainage (by gravity) of the relief valve and
discharge line.
The end of the discharge line should not be threaded or
concealed and should be protected from freezing. No valve
of any type, restriction, or reducer coupling should be
installed in the discharge line.
TO FILL THE WATER HEATER
Make certain that the drain valve is closed, then open the
shut-off valve in the cold water supply line.
Open each hot water faucet slowly to allow the air to vent
from the water heater and piping.
A steady flow of water from the hot water faucet(s) indicates
a full water heater.
9
GAS SUPPLY
The inlet gas pressure to the water heater must not
exceed 10.5" wc (2.6 kPa) for Natural gas and 13.0" wc
(3.2 kPa) for L.P. gas. The minimum inlet gas pressure
(with main burner on) is shown on the rating plate. Check
to see if high or low gas pressure is present and then
contact the gas company for correction.
The branch gas supply line to the water heater should
be clean properly sized steel pipe or other approved gas
piping material.
A union or ANSI design certified semirigid or flexible gas
appliance connector should be installed in the gas line
close to the water heater. The National Fuel Gas Code
(NFGC) mandates a manual gas shut off valve: See (NFCG)
for complete instructions.
If flexible connectors are used, the maximum length shall
not exceed 36 in. and must meet the requirements in ANSI
Z21.24/CSA 6.10 - Connectors for Gas Appliances.
Compound used on the threaded joints of the gas piping
must be of the type resistant to the action of LP gas. Use
compound sparingly on male threads only.
Where a sediment trap is not incorporated as part of the
appliance, a sediment trap shall be installed downstream
of the equipment shutoff valve as close to the inlet of
the appliance as practical at the time of the appliance
installation. The sediment trap shall be either a tee fitting
with a capped nipple in the bottom outlet or other device
recognized as an effective sediment trap. See Figure.
DO NOT use excessive force (20Ft. Lbs.) in tightening the
pipe joint at the gas control (thermostat) inlet, particularly
if teflon pipe compound is used, as the valve body may be
damaged.
For purposes of input adjustment, the minimum inlet
gas pressure (with main burner on) is shown on the
water heater rating plate. If high or low gas pressure are
present, contact your gas supplier for correction.
A ground joint union and manual shutoff valve should be
installed in the gas line near the water heater so that the
burner assembly may be easily removed. The shut-off
valve must be readily accessible for turning on or off.
LEAK TESTING
The water heater and its gas connections MUST be leak
tested at normal operating pressure before it is placed in
operation. Turn ON the manual gas shut-off valve near the
water heater. Use a soapy water solution to test for gas
leaks at all connections and fittings. Bubbles indicate a
gas leak that must be corrected. The water heater factory
connections to the gas valve should also be leak tested
after placing the water heater in operation.
!
WARNING:
NEVER use open flame to test for gas leaks, as bodily
injury or property damage could result.
INSTALLATION
PRESSURE TESTING THE GAS SUPPLY SYSTEM
The water heater and its individual gas shut-off valve
MUST be disconnected from the gas supply piping
system during any high pressure testing of that system at
pressures in excess of 1/2 psi (14” WC. 3.5 kPa).
The water heater MUST be isolated from the gas piping
system by closing the manual gas shut-off valve during
any pressure testing of the gas supply piping at pressures
equal to or less than 1/2 psi (14” WC / 3.5 kPa).
CONDENSATE
The exhaust elbow/condensate trap is shipped pre-installed
with the heater. Pour the neutralizer into the exhaust tee
before vent pipe installation. Make sure that the neutralizer is
at the bottom as shown in the figure on next page.
This is a condensing high efficiency appliance and has a
condensate removal system. The exhaust tee incorporates
a condensate trap and must be filled with water before
operating the water heater. Pour about 1 cup of water into
the exhaust tee.
This water heater generates condensate and requires a drain
to be located in close proximity to allow condensate to drain
safely. The drain line and fittings should be installed per
installation instructions.
Be sure the condensate runs freely to the drain and does not
accumulate in the condensate trap or the condensate line. In
cold climates, precautions may need to be taken to ensure
that the condensate drain lines do not freeze. A water proof
heat tape may be used to prevent freezing of condensate
lines.
Condensate is mildly acidic and should be collected and
disposed per local codes. Certain local codes require
condensate to be neutralized before it is disposed. This
water heater comes with a pre-packaged neutralizer bag.
Pour the neutralizer in the exhaust-tee prior to installing
vent pipes. Make sure the neutralizer is at the bottom of the
exhaust-tee.
To Gas Supply
Manual Gas Shut Off
Gas Pipe to Gas Valve
Sediment
Trap
Union
10
Use only PVC, CPVC pipe or flexible tubing suitable for use
with flue condensate as drain line. If flexible tubing is used
ensure that there are no bends or twists and has gradual
slope to condensate drain.
The drain line (along its entire length) must be at least the
same diameter as the drain of the condensate trap (1/2”).
The drain line must be short as possible and have a
downward slope towards the condensate drain. If suitable
slope is not provided, the drain line can get blocked and will
cause improper operation of the water heater. If a downward
slope cannot be provided, a condensate pump should be used
to pump condensate to a suitable drain.
The end of the drain line should be open to the atmosphere.
The end should not be under water.
DO NOT connect the drain line directly to the sewer drain.
DO NOT connect the drain line with drains from other
appliances.
DO NOT drain condensate into the water heater drain pan.
DO NOT drain condensate over public way, walkway or other
areas where it will create slippery condition, which could lead
to personal injury.
HIGH ALTITUDE
Input rating of this water heater is based on sea level
operation. At higher elevations the actual input rate may
be lower than the value listed on the rating label due to the
derating of Natural Gas and LP Gas.
!
WARNING:
Failure to install a water heater suitable for the altitude
at the location it is intended to serve, can result in
improper operation of the appliance resulting in property
damage and/or producing carbon monoxide gas, which
could result in personal injury, or death.
WIRING
A Correct polarity 120V 50/60 Hz power supply with
suitable disconnect means, must be connected to the
black and white leads provided. The maximum current
draw by these models is 7 Amps. The water heater, when
installed, must be electrically grounded in accordance
with local codes or, in the absence of local codes, with
the National Electrical Code, ANSI/NFPA 70 in the United
States, or CSA C22.1 Electrical Code, in Canada. Improper
grounding or polarity may result in abnormal operation of
the heater.
INSTALLATION
CONDENSATE
NEUTRALIZER
CONDENSATE
DRAIN
To open drain
Transformer
(120V / 60Hz)
F
F
FFM
M
M
M
F
To Ground Block
3
2
1
3
2
1
3
2
1
F
To Ground Block
To Ground Block
F
F
M
F
M
Power Cord
Display Rocker Switch
on the front display
C1
Blower Power Connector
C2
Ignition Control Power
Connector
C3
M
F2-520263-2
Disconnect
2-520102-2
Disconnect
Transformer
(120V / 60Hz)
F
F
FFM
M
M
M
F
To Ground Block
3
2
1
3
2
1
3
2
1
F
To Ground Block
To Ground Block
F
F
M
F
M
Power Cord
Display Rocker Switch
on the front display
C1
Blower Power Connector
C2
Ignition Control Power
Connector
C3
M
F2-520263-2
Disconnect
2-520102-2
Disconnect
For disconnects can be cut o and replaced
with wire nuts to connect the leads to the
power cable from the electrical junction
box if necessary.
11
TYPICAL INSTALLATION
INSTALLATION
To Gas Supply
Manual Gas Shut Off
Drain Valve
Union
Union
Thermal Expansion Tank
(Not Supplied)
If required, install per
local codes and tank
manufacturer's instructions.
Too cold
water
supply
Vacuum Relief Valve (Not supplied)
If required, install per local codes and
valve manufacturer's instructions
Heat Trap
6" Minimum
Heat Trap
6" Minimum
Shut-off
Valve
Shut-off
Valve
Sediment Trap
Temperature & Pressure
Relief Valve
Discharge Line to
suitable open drain
Air Gap 6"
NOTES:
The gas supply piping
must be adequately
supported and aligned to
minimize loads (forces)
on the water heater's gas
valve and burner system.
Hot water
outlet to
fixtures
3/4" Check Valve
with 1/8" Hole
Pressure Gauge
Hot water line
Cold water line
3/4" Shut-Off
Valve (Typ.)
Gas Line
3/4" cold water
supply
Heat Trap
6” Min. 3/4" Shut-Off
Valve (Typ.)
2 Gallon Thermal Expansion
Tank (if required-not supplied
with water heater)
3/4" Shut-
Off Valve
(Typ.)
3/4" Tempered
domestic hot water
supply to house.
Minimum of 2'-0" developed length
of 3/4" type "L" copper from the
water heater connection.
Nominal 3/4" size mixing or
tempering valve (refer to warning
above). Follow mixing or tempering
valve manufacturer’s instructions
for installation of the valve.
Isolation valve in hot water
supply line to heating unit (not
supplied with water heater)
See diagrams above for proper
pipe application for vertical
or horizontal supply lines.
Temperature and Pressure Relief
Valve, tie to location approved by
local code
Temperature and pressure
relief valve discharge line
140°F (60°C)
120°F (49°C) to
130°F (54°C)
Water Heater drain pan installed
in accordance with the Local and
State Code
6” Air Gap
Isolation valve in
cold water return
line from heating
unit (not supplied
with water heater)
Drain valve
(not supplied
with water
heater)
Air vent
3/4" HWS & HWR
to Heating Coil.
Water Heater drain pan installed
in accordance with the Local
and State Code
Air Handler
T FAN
ON
OFF
HEAT
COOL
To HVAC Unit.
Piping loop between
water heater and fan
coil shall be flow guard
gold CPVC or equal
Hot water to
space heater
Hot water coil
All bronze pump
Check valve internal
in pump
Air bleed valve
Water Sample Tap
Flow Control
Valve
12
TYPICAL PIPING DIAGRAM FOR COMBINATION POTABLE/SPACE HEATING INSTALLATION’
INSTALLATION
13
INSTALLATION
VENT AND COMBUSTION AIR INLET
NOTE: This unit can be vented either as a direct vent or power
vent configuration.
NOTE: Power vent installations are Category IV.
!
WARNING:
DO NOT connect this water heater to an existing vent
or chimney; it must be vented separately from all other
appliances, using only approved venting materials.
!
WARNING:
Failure to properly vent the water heater to the outdoors
as outlined above and in the following section can result in
unsafe operation of the water heater causing bodily injury,
explosion, fire or death.
!
DANGER:
To avoid the risk of fire, explosion, or asphyxiation from
carbon monoxide, NEVER operate the water heater unless
it is properly vented and the vent and combustion air inlet
systems are properly installed as detailed in the "Vent and
Combustion Air-Inlet" section of this manual.
The vent and combustion air inlet pipes must overlap a
minimum of 1/2 in. (1.3 cm) at each joint. It is important that
the vent and combustion air inlet pipes engage fully into any
pipe fitting and be kept in that position until the adhesive
has fully cured. DO NOT drill or punch holes in the plastic
pipe or fittings.
IMPORTANT
Where state and/or local codes require vent terminations,
as specified in this Use and Care Manual to be certified
to the UL 1738 Standard for Venting Systems for Gas-
Burning Appliances, Categories II, III, and IV, contact the
Manufacturer’s National Service Department (see last page).
NOTICE:
This unit can be vented using only the below
recommended pipe material. Use only 2, 3, or 4 inch
diameter pipe.
Refer to local codes for restrictions on the use of PVC, CPVC,
PP or ABS pipe and fittings. All exhaust venting materials for
products installed in Canada must meet ULC-S636.
NOTE: For the State of Massachusetts, use only plastic piping,
fittings and vent terminations as spedified in the manual
which are approved by the Massachusetts Board of State
Examiner of Plumbers and Gas for venting of appliances (see
link below):
https://licensing.reg.state.ma.us/pubLic/pl_products/pb_pre_
form.asp
PVC (DWV, ASTM-D2665 or CSA B181.2)
PVC (Schedule 40, ASTM-D1785 or CSA B137.3)
PVC (SDR Series, ASTM-D2241 or CSA B137.3)
CPVC (CPVC 4120, ASTM-D2846 or CSA B137.6)
CPVC (Schedule 40, ASTM-F441 or CSA B137.3)
CPVC (SDR Series, ASTM-F442)
ABS (Schedule 40, DWV, ASTM-D2661 or CSA B181.1)
ABS (Schedule 40, DWV, Cellular Core, ASTM-F628)
Polypropylene
14
NOTICE:
Use of PVC cellular core (ASTM-F891), ABS Schedule 40, DWV
cellular core (ASTM –F628), or Radel® (polyphenylsulfone) in
non-metallic venting systems is prohibited.
The unit may be vented horizontally through a wall or vertically
through the roof. Pipe runs must be adequately supported along
both vertical and horizontal runs. Maximum unsupported span
is recommended to be no more than 3 feet. It is imperative that
the first hanger be located on the horizontal run immediately
adjacent to the first 90-degree elbow from the vertical rise or at
the blower outlet. The support method used should isolate the vent
pipe from floor joists or other structural members to help prevent
the transmission of noise and vibration. DO NOT support, pin, or
otherwise secure the venting system in a way that restricts the
normal thermal expansion and contraction of the chosen venting
material.
If the water heater is being installed as a replacement for an
existing power vented or power direct vented water heater, a
thorough inspection of the existing venting system must be
performed prior to any installation work. Verify that the correct
materials, as detailed above, have been used and that the
minimum or maximum vent length and terminal locations, as
detailed in this manual, have been met. Carefully inspect the entire
venting system for any signs of cracks or fractures, particularly at
the joints between elbows or other fittings and the straight runs of
vent pipe. Check the system for signs of sagging or other stresses
in the joints as a result of misalignment of any components in
the system. If any of these conditions are found, they must be
corrected in accordance with the venting instructions in this
manual before completing the installation and putting the water
heater into service.
Additional installation information for The Common wealth of
Massachusetts is located on the back page of this manual.
VENT PIPE CONNECTION
Refer to "Vent Pipe Connection Locations" Figure, for connecting
the vent pipe to the water heater. These models can be vented
either as a direct vent or as a power vent water heater.
NOTICE:
If the unit is installed as a power vent water heater, the vent
terminal with screen must still be installed on the inlet air side.
INSTALLATION
Before starting the vent installation, careful planning of the
routing and termination of vent and air inlet pipes can reduce
installation times. The length of the vent and air inlet pipes
should be kept to a minimum. Refer to the venting charts in
Table 1 for the pipe sizes and the total equivalent length of
pipe that can be used. DO NOT exceed the equivalent length of
pipe in the charts.
Depending on the size of pipe selected for venting the water
heater, it may be necessary to use a fitting for stepping up
to connect to the water heater. DO NOT step down pipe size
below the 2" pipe size. All models are shipped with 2" vent
terminals with screen. If another size of pipe is used for
venting the unit, the proper vent terminal must be installed.
When the unit is vented as a direct vent, through a side wall,
the vent terminals must be on the same exterior wall mounted
horizontally and maintain a minimum distance between the
centers of 15" (38.1 cm).
JOINING PIPES AND
FITTINGS
All pipe, fittings, solvent cement, primers, and procedures,
must conform to American National Standards Institute and
American Society for Testing and Materials (ANSI/ASTM)
standards in the U.S. For Canada, all pipe, fittings, solvent
cement, primers, and procedures must conform to ULC-S636
and vent manufacture specifications.
CEMENTING JOINTS
NOTICE:
All pipe, fittings, solvent cement, primers and procedures
must conform to American National Standards Institute and
American Society for Testing and Materials (ANSI/ASTM)
standards.
All joints in the vent piping must be properly sealed. Use of the
following material is recommended:
PVC materials should use ASTM D-2564 grade cement.
CPVC materials should use ASTM F-493 grade cement.
ABS materials should use ASTM D-2235 grade cement.
(ABS is not allowed in Canada)
Cleaner-Primer and Medium Body Solvent Cement
1. Cut the pipe end square, removing all jagged edges and
burrs. Chamfer the end of the pipe, and, then, clean the
fitting socket and pipe joint area to remove all dirt, grease,
and moisture.
2. After checking pipe and socket for proper fit, wipe the
socket and pipe with cleaner-primer. Apply a liberal coat of
primer to the inside surface of the socket and the outside of
the pipe. DO NOT allow the primer to dry before applying the
cement.
Blower Air Inlet
Connection
Noise
Reducer
VENT PIPE CONNECTION LOCATIONS
15
INSTALLATION
3. Apply a thin coat of cement evenly in the socket. Quickly
apply a heavy coat to the pipe end. Insert the pipe into the
fitting with a slight twisting motion until it bottoms out.
NOTICE:
Cement must be fluid; if not, re-coat.
4. Hold the pipe fitting for 30 seconds to prevent the tapered
socket from pushing the pipe out of the fitting.
5. Wipe all excess cement from the joint with a rag. Allow
15 minutes for drying before handling. Cure time will vary
according to fit, temperature, and humidity.
NOTICE:
Stir the solvent cement frequently while using. Use a
natural bristle brush or the dauber supplied with the can.
The proper brush size is one inch.
FOR PROPER
INSTALLATION
CAUTIONS:
DO NOT use solvent cement that has become curdled,
lumpy or thickened.
DO NOT thin solvent cement. Observe shelf precautions
printed on the containers.
For applications below 32°F (0°C), use only low
temperature type solvent cement.
Appropriate solvent and cleaner must be used for the
type of vent pipe used (PVC, CPVC, PP, or ABS).
DANGER OF FIRE OR
BODILY INJURY
Solvent cements and primers are highly flammable. Provide
adequate ventilation and do not assemble near a heat source
or open flame. DO NOT smoke. Avoid skin or eye contact.
Observe all cautions and warnings on material containers.
Additional Fitting Considerations
10 Feet Equivalent
length 8 Feet Equivalent
Length 5 Feet Equivalent
Length
Short Sweep 90°
Elbow Standard 90°
Elbow Long Sweep 90°
Elbow
EXAMPLES OF ELBOWS:
It is recommended to
use only standard and/or
long sweep elbows. See
examples as shown.
Minimum and Maximum Vent Lengths
Important information for all installations:
1) The minimum required venting is what is required to safely extend the inlet and outlet vent pipes
outside of the building.
2) Each 90° elbow (standard or long sweep elbow) reduces the
equivalent vent length as shown.
3) Each 45° elbow reduces the equivalent vent length by 2 1/2 feet (0.8m).
4) DO NOT mix pipe sizes for venting these models, use only one size of pipe for all venting.
5) All vent terminations (horizontal or vertical) should be a minimum of 24 inches (61cm) and a maximum
of 36 inches (91 cm) apart, as measured from center to center of terminals.
Exceeding the maximum equivalent vent lengths may cause the water heater to malfunction or cause a
lock-out condition.
Feet to Meters
20 6.1
50 15.2
60 18.3
70 21.3
80 24.4
100 30.5
120 36.6
130 39.6
170 51.8
16
INSTALLATION
NOTE: The intake and exhaust connections are set-up with 2" Schedule 40 pipe size. An adapter may be used to increase pipe size to 3"
and 4" along the length of the vent and air intake. Vent and air intake pipes should always be set-up to the same size. The vent length
calculations should be based upon termination size.
Follow manufacturers instructions for installation of flex
vents.
All power direct models can use 2 in. concentric venting only as listed in
the above chart.
2 inch concentric vent can only be used with 2 inch rigid piping.
DO NOT mismatch concentric vent terminations with different rigid
piping as it may cause the heater to malfunction or cause a lock-out
condition unless specifically mentioned.
3" Concentric vent may be used with 3" and 4" venting.
Flexible Polypropylene pipe (ft)
Pipe Size (IN.) 2" 3"
Intake Exhaust Intake Exhaust
Max PV 030'
(13m) 030'
(13m)
Commercial Equivalent Vent Lengths
50G-76K, 50G-100K, 75G; POWER VENT
CONFIGURATION; (RIGID PIPE)
50G-76K, 50G-100K, 75G; POWER DIRECT VENT
CONFIGURATION; (RIGID PIPE)
Elevation
(Feet)
Vent Size
(Inches)
Nat Max Eq.
Length (Feet)
LP Max Eq.
Length (Feet)
Nat Max Eq. Length(Feet) LP Max Eq. Length (Feet)
Terminations
Intake Exhaust Intake Exhaust
0-10,100
2" 40' 40' 40' 40' 40' 40' 2" AND 3"
90° ELBOWS,
2", 3" AND 4"
CONCENTRIC
AND 2"AND 3"
PANCAKE
3" 140' 140' 140' 140' 140' 140'
4" 140' 140' 140' 140' 140' 140'
MINIMUM INTAKE AIR AND EXHAUST VENT: 10' EQUIVALENT LENGTH
17
INSTALLATION
Direct Vent Installation
Check to make sure flue gases DO NOT recirculate into the air
intake terminal when using direct venting. If the water heater is
having service issues, flue recirculation may be a contributing
factor.
Even when the minimum vent terminal separation distances
are followed, recirculation may still occur, depending upon the
location outside the building, the distance from other buildings,
proximity to corners, weather conditions, wind patterns, and
snow depth.
Periodically check to make sure that flue recirculation is not
occurring. Signs of flue gas recirculation include frosted or
frozen intake terminals, condensate in the intake terminal and
venting system, oxidation, or white chalk material on the flame
sensor or igniter shield. Correction to flue recirculation may
involve angling the intake away from the exhaust terminal,
increasing the distance between them, or using inside air for
combustion. Check to be sure the intake and exhaust terminals
are not obstructed, especially during periods of below freezing
weather.
All intake and exhaust venting components must have the
same diameter size. DO NOT use a different size on the intake
and exhaust venting.
Be sure the condensate runs freely to a drain and does
not accumulate inside the water heater. In cold climates,
precautions may need to be taken to insure that the condensate
drain does not freeze. Make sure the condensate trap or drain
loop is installed to prevent flue gases from being discharged
into the room. Refer to the "Venting" section of this manual for
complete instructions on venting and condensate drainage.
Stress levels in the pipe and fittings can be significantly
increased by improper installation. If rigid pipe clamps are
used to hold the pipe in place, or if the pipe cannot move freely
through a wall penetration, the pipe may be directly stressed,
or high thermal stresses may be formed when the pipe heats
up and expands. Install accordingly to minimize such stresses.
Follow the below procedure to vent through the wall.
1. Cut two holes for the pipe to pass through. The hole diameter
should be 2.5" (6.4 cm) for 2" pipe, 3.5" (8.9 cm) for 3" pipe.
Vent terminals must maintain a horizontal distance apart in
the range of 24" min. (61 cm).
2. Use the proper PVC cement (primer and adhesive) to secure
the exhaust vent and air intake terminals provided with the
water heater to the plastic pipes. The distance between
the back edge of the exhaust vent terminal and the exterior
wall must be 6 inches (12.7 cm) more for the exhaust vent
terminal than the air intake terminal. Use the proper cement
or sealant and assembly procedures to secure the vent
connector joints between the terminal and the blower outlet.
Provide support brackets every 3 feet (.91 m) of horizontal
vent beyond the intake terminal.
18
Min. 24"
Inlet Outlet
Additional considerations in the following pages.
DO NOT install vent terminals under any patio or deck.
To help prevent moisture from freezing on walls and under eaves,
DO NOT locate outlet vent terminal on the side of your home with
prevailing winter winds.
DO NOT terminate vent pipe directly on brick or masonry
surfaces. Use a rust-resistant sheet metal backing plate behind
vent. (See Figure above.)
DO NOT locate vent terminal too close to shrubbery, since flue
gases may damage them.
Caulk all cracks, seams and joints within 6 feet
(1.83 m) of vent terminal.
All painted surfaces should be primed to lessen the chance of
physical damage. Painted surfaces will require maintenance.
Make sure that all vent pipes exposed to cold conditions (attics,
crawl spaces, etc.) have the proper slope and support to keep
moisture from accumulating in the vent pipes. NOTE: Insulating
of non-metallic vent materials is prohibited.
This water heater requires its own separate venting system.
DO NOT connect the exhaust vent to an existing vent pipe or
chimney.
Moisture in the flue gas will condense as it leaves the vent
terminal. In cold weather this condensate can freeze on the
exterior wall, under the eaves, and on surrounding objects. Some
discoloration to the exterior of the building is to be expected;
however, improper location or installation can result in severe
TYPICAL HORIZONTAL VENT INSTALLATION
VERTICAL VENT TERMINAL LOCATION
Short Piece of Vent
Pipe
*Min. 12"(30.5 cm)
Above Roof or
Min. 12"(30.5 cm) Above
Anticipated Snow Level.
Max. 24"(61 cm) Above
Roof (Without Additional
Support)
Vent Pipe
Through
Roof
Elbows
* Min of 18"(46 cm) for Canada
Pipe &
Coupling
Sheet Metal Shield on
Brick or Masonry Walls
Outside of the
Building Wall
To the Water Heater
Vent Pipe
Inlet Vent Terminal
with 1/2" Mesh
Protective
Screen Inside
Vent
Pipe
Elbow can be a maximum
of 1 inch from the wall.
damage to the structure or exterior finish of the building. In
locations with extended amounts of time with temperatures
under 40°F. (4°C.) and/or prevailing wind toward the outlet
vent, make sure that the outlet vent terminal is at least 2 feet
(0.61 m) away from anything that can be damaged by the
condensate.
HORIZONTAL VENT
INSTALLATION
Once the vent terminal location has been determined, make a
hole through the exterior wall to accommodate the vent pipe.
The vent pipe must exit the exterior wall horizontally only (See
Typical Horizontal Vent Installation Figure on this page).
Insert a small length of vent pipe through the wall, and connect
the coupling as shown in Typical Horizontal Vent Installation
Figure. Connect the vent terminal as shown to the vent pipe on
the exterior of the building. Seal any opening around the vent
pipe or fittings with mortar or silicone caulk as shown in Typical
Horizontal Vent Installation Figure.
Complete the rest of the vent pipe installation to the water
heater’s vent connector fitting on the blower outlet. If necessary,
support the horizontal run of pipe as previously mentioned.
VERTICAL VENT
INSTALLATION
Once the vent terminal location has been determined, make
a hole through the roof and interior ceiling to accommodate
the vent pipe. Complete the vent pipe installation to the water
heater’s vent connector fitting on the blower outlet. Support
vertical or horizontal runs as previously mentioned.
Install adequate flashing where the vent pipe passes through
the roof. Determine the vent terminal height and cut the vent
pipe accordingly. Refer to Vertical Vent Terminal Location Figure
for the proper vent terminal height. Connect the vent elbow onto
the vertical pipe through the roof. Connect a short piece of vent
pipe (approximately 3" (7.6 cm) long) to the elbow, and, then,
join the vent terminal to the short piece of vent pipe.
INSTALLATION
19
The following information should be used for determining the proper location of the vent terminal
for direct vent water heaters.
VVENT TERMINAL XAIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED
HORIZONTAL VENT TERMINAL LOCATION FOR POWER DIRECT VENT
Canadian Installations 1US Installations 2
A= Clearance above grade, veranda, porch, deck or
balcony. 12 inches (30 cm) 12 inches (30 cm)
B= Clearance to window or door that may be opened.
6 in (15 cm) for appliances < 10,000 Btuh (3
kW),
9 in (23 cm) for appliances > 10,000 Btuh (3
kW) 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 (3
kW),
9 in (23 cm) for appliances > 10,000 Btuh (3
kW) and < 100,000 Btuh (30 kW),
36 in (91 cm) for appliances > 100,000 Btuh
(30 kW)
C= Clearance to permanently closed window. 0 in (0 cm) 0 in (0 cm)
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.
12 in (30 cm) 12 in (30 cm)
E= Clearance to unventilated soffit. 12 in (30 cm) 12 in (30 cm)
F= Clearance to outside corner. 24 in (61 cm) 24 in (61 cm)
G= Clearance to inside corner. 18 in (46 cm) 18 in (46 cm)
H = Clearance to each side of center line extended
meter/regulator assembly. above 3 ft (91 cm) within a height of 15 ft (4.6 m) 3 ft (91 cm) within a height of 15 ft (4.6 m)
I = Clearance to service regulator vent outlet. 3 ft (91 cm) 3 ft (91 cm)
J = Clearance to nonmechanical air supply inlet to the
building or the combustion air inlet of any other
appliance..
6 in (15 cm) for appliances < 10,000 Btuh (3 kW),
9 in (23 cm) for appliances > 10,000 Btuh (3 kW)
and < 100,000 Btuh (30 kW),
36 in (91 cm) for appliances > 100,000 Btuh (30
kW)
6 in (15 cm) for appliances < 10,000 Btuh (3
kW),
9 in (23 cm) for appliances > 10,000 Btuh (3
kW) and < 50,000 Btuh (15 kW),
12 in (30 cm) for appliances > 50,000 Btuh
(15 kW)
K = Clearance to mechanical air supply inlet. 6 ft (1.83 m) 3 ft (91 cm) above if within 10 ft (3 m)
horizontally
L = Clearance above paved side walk or paved
driveway located on public property. 7 ft (2.13 m)
7 ft (2.13 m) for mechanical draft system
(Category I appliances); vents for Category II
and IV appliances cannot be located above public
walkways or other areas where condensate or
vapor can cause a nuisance or hazard
M = Clearance under veranda, porch, deck or balcony. 12 in (30 cm) ‡ 12 in (30 cm)*
Direct Vent Terminal Clearances
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.
‡ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the oor.
* Permitted only if veranda porch, deck, or balcony is fully open on a minimum of two sides beneath the oor.
Follow local or National gas codes or latest edition of CAN/CSA B149 and Propane installation code.
INSTALLATION
20
VENT INSTALLATION – Before proceeding, make certain
you understand the procedure and cautions covered in the
section “Joining Pipes and Fittings.
POWER VENT INSTALLATION – Power venting is where the
indoor air is used and the exhaust is vented to the outside.
Venting may be run horizontally through an outside wall or
vertically through a roof through using either 2" (5.1 cm),
3" (7.6 cm), 4" (10.2 cm) diameter PVC, ABS, CPVC or PP.
This water heater is supplied with a screened intake elbow
and exhaust coupling referred to as the air intake terminal
and the exhaust vent terminal.
NOTE: Flexible PP vent kit is available for Power Vent
configurations, in 2" and 3" diameters. These kits should
be used for vertical venting only.
NOTICE:
Use of PVC cellular core (ASTM-F891), ABS Schedule
40 DWV cellular core (ASTM –F628), or Radel®
(polyphenylsulfone) in non-metallic venting systems is
prohibited.
In a horizontal application, it is important that condensate
not be allowed to buildup in the exhaust vent pipe. To
prevent this from happening, the pipe should be installed
with a slight upward slope of ¼” per foot. The vent system
must be supported every 5 feet of vertical run and every 3
feet of horizontal run of vent pipe length.
Failure to properly support the vent piping with hangers
and clamps may result in damage to the water heater or
venting system.
Follow local or National gas codes or latest edition of ANSI standard Z223.1 or CAN/CSA B149 and Propane installation code
DO NOT terminate near soffit vents or crawl space or other area where condensate or vapor could create a nuisance hazard
or cause property damage.
DO NOT locate the exhaust vent terminal where condensate or vapor could cause damage or could be detrimental to the
operation of regulators, relief valves, or other equipment.
DO NOT locate the exhaust vent terminal over public area or walkways where condensate or vapor can cause nui sance or
hazard.
• DO NOT locate the vent termination in proximity to plants/shrubs.
INSTALLATION
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Rheem XP75T12UHN100U0 Mode d'emploi

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Chauffe-eau
Taper
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