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2 Rinnai Tankless Water Heater Installation and Operation Manual
• Do not store or use gasoline or other flammable vapors and liquids in the
vicinity of this or any other appliance.
• WHAT TO DO IF YOU SMELL GAS
− Do not try to light any appliance.
− Do not touch any electrical switch; do not use any phone in your building.
− Immediately call your gas supplier from a neighbor s phone. Follow the gas ’
supplier s instructions. ’
− If you cannot reach your gas supplier, call the fire department.
• Installation and service must be performed by a trained and qualified
professional, service agency or the gas supplier.
WARNING
Full length French and Spanish versions available online at rinnai.us.-
If the information in these instructions is not followed exactly, a fire or
explosion may result causing property damage, personal injury, or
death.
• Ne pas entreposer ni utiliser d essence ou ni d autres vapeurs ou liquides ’ ’
inflammables à proximité de cet appareil ou de tout autre appareil.
• QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ :
− Ne pas tenter d allumer d appareil.’ ’
− Ne touchez à aucun interrupteur ; ne pas vous servir des téléphones se
trouvant dans le bâtiment.
− Appelez immédiatement votre fournisseur de gaz depuis un voisin. Suivez
les instructions du fournisseur.
− Si vous ne pouvez rejoindre le fournisseur, appelez le service des
incendies.
• L installation et l entretien doivent être assurés par un installateur ou un ’ ’
service d entretien qualifié ou par le fournisseur de gaz.’
AVERTISSEMENT
Assurez vous de bien suivre les instructions données dans cette notice -
pour réduire au minimum le risque d incendie ou d explosion ou pour ’ ’
éviter tout dommage matériel, toute blessure ou la mort.
Rinnai Tankless Water Heater Installation and Operation Manual 3
1. Welcome ................................................................................................................................... 4
1.1 To The Installer ................................................................................................................ 4
1.2 To The Consumer ............................................................................................................ 4
1.3 Acronyms and Abbreviations ........................................................................................... 4
2. Safety ....................................................................................................................................... 5
2.1 Safety Symbols ................................................................................................................ 6
2.2 Safety Precautions .......................................................................................................... 6
3. About the Water Heater .......................................................................................................... 8
3.1 Model Numbers Explained .............................................................................................. 8
3.2 Front and Bottom View .................................................................................................... 9
3.3 Components .................................................................................................................. 10
3.4 Specifications ................................................................................................................ 11
3.5 Dimensions .................................................................................................................... 12
3.6 Accessories ................................................................................................................... 14
4. Install the Water Heater ........................................................................................................ 16
4.1 Installation Guidelines ................................................................................................... 16
4.2 What You Will Need ...................................................................................................... 17
4.3 Choose an Installation Location .................................................................................... 18
4.4 Mount the Water Heater to the Wall .............................................................................. 21
4.5 Vent the Water Heater ................................................................................................... 23
4.6 Connect the Water Supply ............................................................................................ 47
4.7 Install the Isolation Valves ............................................................................................. 48
4.8 Install the Pressure Relief Valve ................................................................................... 48
4.9 Connect the Condensate Drain ..................................................................................... 49
4.10 Connect the Gas Supply .............................................................................................. 52
4.11 Connect the Power Supply ........................................................................................... 55
4.12 Initial Settings ................................................................................................................ 56
4.13 Configure Parameter Settings ...................................................................................... 59
4.14 External Pump with Circ Logic- ...................................................................................... 62
4.15 Post Water Heater Installation Checklist- ...................................................................... 63
5. Operation ............................................................................................................................... 65
5.1 Safety Precautions ........................................................................................................ 65
5.2 Gas Operating Instructions ........................................................................................... 67
5.3 Control Panel ................................................................................................................. 68
5.4 Setting the Temperature ................................................................................................ 69
5.5 Performance Data ......................................................................................................... 70
5.6 Diagnostic Codes .......................................................................................................... 72
5.7 Configuring Recirculation (If Applicable) ....................................................................... 75
6. Maintenance .......................................................................................................................... 82
6.1 Maintenance .................................................................................................................. 82
6.2 Cleaning and Inspecting the Air Filter ........................................................................... 84
6.3 Flushing the Heat Exchanger ........................................................................................ 85
6.4 Draining the Water Heater ............................................................................................ 87
7. Appendices ............................................................................................................................ 88
7.1 Massachusetts State Gas Regulations ......................................................................... 88
7.2 Wiring Diagram .............................................................................................................. 90
7.3 Ladder Diagram ............................................................................................................. 91
7.4 Pressure Drop Curves ................................................................................................... 92
7.5 Water Flow and Pump Performance Curves ................................................................ 93
7.6 Guidelines for Additional Temperature Controllers ....................................................... 94
7.7 Bluetooth Low Energy (BLE) and App Instructions ....................................................... 95
7.8 Federal Communication Commission (FCC) Interference Statement .......................... 96
7.9 Industry Canada Statement .......................................................................................... 97
8. Warranty .................................................................................................................................. 98
4 Rinnai Tankless Water Heater Installation and Operation Manual
Thank you for purchasing a Rinnai Tankless
Water Heater. Before installing and operating
this water heater, be sure to read these
instructions completely and carefully to
familiarize yourself with the water heater’s
features and functionality.
ANSI American National Standards Institute
Btu British Thermal Unit
DHW Domestic Hot Water
GPM Gallons per minute
LPG Liquid Petroleum Gas
NG Natural Gas
PP Polypropylene
PRV Pressure Relief Valve
PSI Pounds per square inch
WC Inches of water column
• This manual provides instructions on
operating and maintaining the water heater.
Keep this manual for future reference.
• As when using any appliance generating
heat, there are certain safety precautions
you should follow. See section Safety “2.2
Precautions for detailed safety ”
precautions.
• Be sure your water heater is installed by a
trained and qualified professional.
• If installing in the state of Massachusetts,
refer to section Massachusetts State “7.1
Gas Regulations in this manual.”
Table 1 provides a list of common acronyms
and abbreviations used in this manual:
• It is recommended that a trained and
qualified professional who has attended
a Rinnai training class complete the
installation. The warranty may be voided
due to any improper installation.
• A trained and qualified professional
should have skills such as:
− Gas sizing
− Connecting gas lines, water lines,
valves, and electricity
− Knowledge of applicable national,
state, and local codes
− Installing venting through a wall or
roof
− Training in installation of tankless
water heaters. Training on Rinnai
Tankless Water Heaters is
accessible at
rinnaipro.myabsorb.com.
• Read all instructions in this manual
before installing the water heater. The
water heater must be installed according
to the exact instructions in this manual.
• Proper installation is the responsibility of
the trained and qualified professional.
• When installation is complete, leave this
manual with the water heater (for
internal/indoor units) or give the manual
directly to the consumer.
Table 1. Acronyms and Abbreviations
Rinnai Tankless Water Heater Installation and Operation Manual 5
• Do not store or use gasoline or
other flammable vapors and
liquids in the vicinity of this or any
other appliance.
• WHAT TO DO IF YOU SMELL
GAS
− Do not try to light any
appliance.
− Do not touch any electrical
switch; do not use any phone
in your building.
− Immediately call your gas
supplier from a neighbor s ’
phone. Follow the gas
supplier s instructions. ’
− If you cannot reach your gas
supplier, call the fire
department.
• Installation and service must be
performed by a trained and
qualified professional, service
agency or the gas supplier.
• The warning signs in this manual
are here to prevent injury to you
and others. Please follow them
explicitly.
WARNING
If the information in these
instructions is not followed
exactly, a fire or explosion may
result causing property damage,
personal injury, or death.
• Ne pas entreposer ni utiliser
d essence ou ni d autres vapeurs ’ ’
ou liquides inflammables à
proximité de cet appareil ou de
tout autre appareil.
• QUE FAIRE SI VOUS SENTEZ
UNE ODEUR DE GAZ :
− Ne pas tenter d allumer ’
d appareil.’
− Ne touchez à aucun
interrupteur ; ne pas vous
servir des téléphones se
trouvant dans le bâtiment.
− Appelez immédiatement votre
fournisseur de gaz depuis un
voisin. Suivez les instructions
du fournisseur.
− Si vous ne pouvez rejoindre le
fournisseur, appelez le
service des incendies.
• L installation et l entretien doivent ’ ’
être assurés par un installateur
ou un service d entretien qualifié ’
ou par le fournisseur de gaz.
• Les panneaux d avertissement de ’
ce manuel sont ici pour éviter de
vous blesser et d autres ’
personnes. Suivezles
explicitement.
AVERTISSEMENT
Assurezvous de bien suivre les
instructions données dans cette
notice pour réduire au minimum le
risque d incendie ou d explosion ’ ’
ou pour éviter tout dommage
matériel, toute blessure ou la mort.
6 Rinnai Tankless Water Heater Installation and Operation Manual
Indicates a potentially hazardous
situation which, if not avoided, could
result in personal injury or death.
CAUTION
WARNING
This manual contains the following important
safety symbols. Always read and obey all
safety messages.
• Before operating, smell all around the
appliance area for gas. Be sure to smell
next to the floor because some gas is
heavier than air and will settle on the
floor.
• Keep the area around the appliance clear
and free from combustible materials,
gasoline, and other flammable vapors and
liquids.
• Combustible construction refers to
adjacent walls and ceiling 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.
• Flammable liquids such as cleaning
solvents, aerosols, paint thinners,
adhesives, gasoline and propane must be
handled and stored with extreme care.
These flammable liquids emit flammable
vapors and when exposed to an ignition
source can result in a fire hazard or
explosion. Flammable liquids should not
be used or stored in the vicinity of this or
any other gas appliance.
DANGER
Indicates an imminently hazardous
situation which, if not avoided, will result in
personal injury or death.
Indicates a potentially hazardous situation
which, if not avoided, could result in minor
or moderate injury. It may also be used to
alert against unsafe practices.
Alerts you to potential hazards that
can kill or hurt you and others.
DO NOT adjust the internal gas valve.
The design is such that adjustment is not
required. Warranty may be voided if the
internal gas valve is adjusted.
WARNING
The following precautions apply to the
installer and consumer. Read and follow all
instructions in this section.
Outdoor installations require a Rinnai-
specified outdoor vent cap. DO NOT install
the water heater outdoors without the Rinnai
-specified outdoor vent cap. Refer to the
installation instructions of the outdoor vent
cap to install this water heater outdoors.
WARNING
Rinnai Tankless Water Heater Installation and Operation Manual 7
• DO NOT store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
(NE PAS entreposer ni utiliser
d essence ou ni d autres vapeurs ou ’ ’
liquides inflammables à proximité de cet
appareil ou de tout autre appareil.)
• Always check the water temperature
before entering a shower or bath.
• Hot water outlet pipes leaving the water
heater can be hot to touch.
• To protect yourself from harm, before
performing maintenance:
− Turn off the electrical power supply
by unplugging the power cord or by
turning off the electricity at the circuit
breaker. (The temperature controller
does not control the electrical power.)
− Turn off the gas at the manual gas
control valve, usually located
immediately below the water heater.
− Turn off the incoming water supply.
This can be done at the isolation
valve immediately below the water
heater or by turning off the water
supply to the building.
− Use only your hand to turn the
manual gas control valve. Never use
tools. If the manual gas control valve
will not turn by hand, do not try to
repair it; call a trained and qualified
professional. Force or attempted
repair may result in a fire or
explosion.
• DO NOT use this appliance if any part
has been under water. Immediately call
a qualified service technician to inspect
the appliance and to replace any part of
the control system and any gas control
which has been under water.
(N’ ’utilisez pas cet appareil s il a été
plunge dans l eau, même partiellement. ’
Faites inspecter l appareil par un licence ’
professionnelle et remplacez toute
partie du système de contrôle et toute
commande qui ont été plongés dans
l eau.)’
• DO NOT use substitute materials. Use
only parts certified for the appliance.
• Should overheating occur or the gas
supply fails to shut off, turn off the
manual gas control valve to the
appliance.
(En cas de surchauffe ou si
l alimentation en gaz ne s arrête pas, ’ ’
fermez manuellement le robinet d arrêt ’
de l’admission de gaz.)
• Only trained and qualified
professionals are permitted to adjust
parameter settings.
• DO NOT use an extension cord or
adapter plug with this appliance.
• Any alteration to the appliance or its
controls can be dangerous and will
void the warranty.
• DO NOT operate the water heater
without the front panel installed. The
front panel should only be removed for
service/maintenance or replacing
internal components.
• BURN HAZARD. Hot exhaust and vent
may cause serious burns. Keep away
from the water heater. Keep small
children and animals away from the
water heater.
• Proper venting is required for the safe
operation of this appliance.
• Install the vent system per local and
national codes.
• DO NOT obstruct the flow of
combustion and ventilation air to the
water heater.
• Failure to properly vent this appliance
can result in death, personal injury
and/ or property damage.
• DO NOT install this water heater
above 10,200 ft (3,109 m).
• Rinnai recommends that every home
have a carbon monoxide (CO) alarm in
the hallway near bedrooms in each
sleeping area. Check batteries monthly
and replace them annually.
8 Rinnai Tankless Water Heater Installation and Operation Manual
Topics in this section
• Model Numbers Explained
• Front and Bottom View
• Components
• Specifications
• Dimensions
• Accessories
Example:
RXP199i
RX P 199 i
Installation Type:
i: Interior (Indoor)
Maximum Gas Consumption (Btu/h):
• 199: 199,000
• 180: 180,000
• 160: 160,000
• 130: 130,000
Pump:
P: Pump (Internal Pump Included in Model)
Application Type:
RX: Residential
Rinnai Tankless Water Heater Installation and Operation Manual 9
Figure 2: Bottom View
Hot Water
Outlet
Cold Water
Inlet
Gas
Condensate
Drain
Figure 1: Front View
Vent
Connections
Controller
Supply Connections
Front View
Boom View
10 Rinnai Tankless Water Heater Installation and Operation Manual
Figure 3: Components
Controller removed for clarity
Air Inlet
Exhaust
Flue Gas Exhaust
Air Inlet Filter
Fan with Integrated
Venturi
Gas Valve
Primary
Heat Exchanger
PC Board
Burner Assembly
Ignition Unit
Pump PC Board
(RXP [with pump]
models only)
(Cover removed for
clarity)
Secondary
Heat Exchanger
Condensate Trap
Combustion
Analysis Port
Rinnai Tankless Water Heater Installation and Operation Manual 11
Table 2. Specifications
1 Activation flow rate may vary slightly depending on the temperature setting and the inlet water temperature.
2 The maximum gas supply pressure must not exceed the value specified by the manufacturer.
Rinnai products are continually being updated and improved; therefore, specifications are subject to change without prior notice.
Indoor Units without Pump Indoor Units with Pump
(Includes outdoor installaons with Rinnai specied outdoor vent cap)-
RX199i RX180i RX160i RX130i RXP199i RXP160i
Minimum Gas Consumpon Btu/h 15,000
Maximum Gas Consumpon Btu/h 199,000 180,000 160,000 130,000 199,000 160,000
Flow Rate1 (Min Max)- 0.13 11.1 GPM -
(0.5 42 L/min)-
0.13 10.0 GPM -
(0.5 38 L/min)-
0.13 9.0 GPM -
(0.5 34 L/min)-
0.13 7.1 GPM -
(0.5 27 L/min)-
0.13 11.1 GPM -
(0.5 42 L/min)-
0.13 9.0 GPM -
(0.5 34 L/min)-
Unit Weight 55 lb (25 kg) 55 lb (25 kg) 54 lb (24 kg) 54 lb (24 kg) 58 lb (26 kg) 57 lb (26 kg)
Sound Level 49 dB 49 dB 48 dB 48 dB 49 dB 48 dB
Electrical
Data
Normal 98 W 76 W 73 W 47 W 98 W 73 W
Normal with Pump Operaon 170 W 149 W -
Standby 1.3 W 1.3 W
Freeze Protecon 142 W 174 W
Max Current 4 Amps
Fuse 10 Amps
Temperature Seng Minimum: Normal Operaon: 98°F (37°C) (Crossover Mode: 120°F (49°C))
Maximum: Default: 120°F (49°C) With Parameter Adjustment: 140°F (60°C)
Bypass Flow Control Electronic
Gas
Supply
Pressure2
Natural Gas 3.5 in. wc 10.5 in. wc-
Propane 8.0 in. wc 13.5 in. wc-
Type of Appliance Super High Eciency (Condensing), Tankless, Temperature Controlled, Connuous Flow Gas Hot - -
Water System
Ignion System Direct Electronic Ignion
Electric Connecons Appliance: AC 120 Volts, 60Hz Temperature Controller: DC 12 Volts (Digital)
Water Supply Pressure Minimum: 15 PSI (Recommended 50 PSI for maximum performance) Maximum: 150 PSI
Remote Control Cable Non Polarized Two Core Cable (Minimum 22 AWG)-
Non polarized Two Conductor Low Voltage Cable (Minimum 22 AWG)-
ENERGY STAR® Qualied Yes
Complies with South Coast Air Quality
Management District 14 ng/J or 20 ppm NOx
emission levels
Yes
Rinnai Tankless Water Heater Installation and Operation Manual 13
Connection Connection Size
Gas 3/4 in. NPT
Cold Inlet 3/4 in. NPT
Hot Outlet 3/4 in. NPT
Condensate Drain 1/2 in. NPT
Figure 5: Supply Connections
Table 3. Supply Connections
14 Rinnai Tankless Water Heater Installation and Operation Manual
Numerous optional accessories are available for purchase for your Rinnai Tankless Water Heater.
Listed below are some commonly purchased accessories. For a complete list of accessories, visit
www.rinnai.us. For questions, or to purchase an accessory, contact your local Rinnai dealer/
distributor or Rinnai Customer Care at 1 9419.-800-621-
Table 4. Accessories
Product Product Description Image
Isolation Valve Kit
• Part #: MIVK T- -LW
Isolation valves provide the ability to
isolate the water heater from the
structure s plumbing system and allow ’
quick and easy access to flush the
heat exchanger. Rinnai strongly
recommends use of these valves for
service and maintenance.
Outdoor Vent Cap
• Part #: RXOVC
Allows the water heater to be installed
outdoors.
BLE Push Button
• Part #: RPB02
Mounted in a convenient location, such
as a kitchen faucet or bathroom sink,
the BLE push button works without the
Wi-Fi Module to operate the tankless
water heater recirculation system by
pushing the button.
Thermal Bypass Valve
• Part #: 107000143
Included with RXP (with
pump) models
The thermal bypass valve can be
installed between a cold water pipe and
a hot water pipe to run recirculation
without a dedicated return line.
Condensate Neutralizer
• Part #: 804000074
Neutralizes the condensate generated
by the water heater.
Wi-Fi Module (and
Accessories)
• Part #: RWM101
Controls On Demand recirculation, -
remotely adjust temperatures, and
communicates with the service provider
portal. The module and MC US -195T-
controller are not compatible
accessories and must not be installed
together.
Additional Controllers
• Part #: MC BK, -601-
MC-601-W, or MC-
195T-US
Additional controllers are available for
user convenience.
Pipe Cover
• PCD11 SHS-
Encloses the piping below the water
heater for aesthetic purposes.
Recess Box
• Part #: RGBCTWHRX
Allows a water heater to be recessed
into a wall. A vent adapter is provided
with the recess box.
Pressure
Relief
Valve
Rinnai Tankless Water Heater Installation and Operation Manual 15
Table 4. Accessories (Continued)
Product Product Description Image
ScaleCutter
• Part #: 103000038
Filters and reduces the amount
of scale entering the water
heater allowing for greater
water heater longevity.
ScaleCutter Refill Cartridge
• Part #: 103000039
Refill cartridge for the ScaleCutter
filter assembly.
Drain Down Kit
• Part #: 104000059
Provides freeze protection by
immediately draining the water
heater upon loss of power.
Leak Detection Kit
• Part #: RXLeakKit
Pipe cover drain pan and float
switch for use with Pipe Cover
(Part #: PCD11 SHS)-
Room Air Screen
• Part #: 108000104 for 2 in.
• Part #: 108000105 for 3 in.
Recommended room air screen for
use in room air applications only.
EZConnect Cable™
• Part #: REU EZC 2- -
Electronically connects two water
heaters and allows them to
function as one hot water source.
OPU Switch
• Part #: REU OPU3-
Normally Closed (NC) switch that
connects to the tankless water
heater PC Board. When used with
a hydronic air handler, the switch
gives priority to domestic hot
water.
Dedicated Return and Isolation
Valve Kit
• Part #: 107000639
Valve kit including tee, drain valve,
pressure relief valve, check valve
and isolation valves (cold and hot)
to simplify set up of a dedicated -
recirculation line.
Internal Add on Recirculation -
Conversion Kit
• Part #: RX2RXPCK
Allows a no pump model to be
converted to a pump model.
Image not shown
Ubbink 2 in. Polypropylene
(PP) Flexible Venting
• Approved for condensing,
vertical non direct vent (room -
air) applications
• Maximum equivalent length:
50 ft (15 m)
Gas Conversion Kit
Part #:
• 104000330
Converts the tankless water heater
gas type. Kit contains gas
conversion manual and conversion
rating plate label (adheres to water
heater to display new gas type).
Sample Rating Plate Label
2 in. (60)
Flex Connector
Part #: 222720NPP
2 in. (60)
Condensing
Flex
Termination
Kit
Part #:
184470NPP
2 in. (60) Flex Roll X
41.5 Ft (12.5 m)
Part #: 222721NPP
16 Rinnai Tankless Water Heater Installation and Operation Manual
Topics in this section
• Installation Guidelines
• What You will Need
• Choose an Installation Location
• Mount the Water Heater to the Wall
• Vent the Water Heater
• Connect the Water Supply
• Install the Isolation Valves
• Install the Pressure Relief Valve
• Connect the Condensate Drain
• Connect the Gas Supply
• Connect the Power Supply
• Initial Settings
• Configure Parameter Settings
• External Pump with Circ Logic-
• Post Water Heater Installation Checklist-
When installing the water heater, follow these
guidelines:
• This water heater is certified for installation
in residential applications and manufactured
(mobile) homes.
• This water heater is suitable for combination
water heating and space heating and not
suitable for space heating applications only.
• The installation must conform with local
codes or, in the absence of local codes, with
the National Fuel Gas Code, ANSI Z223.1/
NFPA 54, and/or CSA B149.1, Natural Gas
and Propane Installation Code. If installed in
a manufactured home, the installation must
conform with the Manufactured Home
Construction and Safety Standard, Title 24
CFR, Part 3280 and/ or CAN/SCA Z240 MH
Series, Manufactured Homes.
THIS SECTION IS INTENDED FOR THE
INSTALLER
Installer qualifications: A trained and qualified
professional must install the appliance,
inspect it, and leak test the water heater
before use. The warranty may be voided due
to any improper installation. The trained and
qualified professional should have skills such
as: Gas sizing; Connecting gas lines, water
lines, valves, and electricity; Knowledge of
applicable national, state, and local codes;
Installing venting through a wall or roof; and
training in installation of tankless water
heaters. Training for Rinnai Tankless Water
Heaters is accessible online at
rinnaipro.myabsorb.com.
• The appliance, 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, and/or the CSA C22.1,
Canadian Electrical Code, Part 1.
• The appliance and its main gas valve must
be disconnected from the gas supply piping
system during any pressure testing of that
system at test pressures in excess of 1/2
psi (3.5 kPa) (13.84 in W.C.). The appliance
must be isolated from the gas supply piping
system by closing its individual manual
shutoff valve during any pressure testing of
the gas supplying system at test pressure
equal to or less than ½ psi (3.5 kPa) (13.84
in W.C.).
• You must follow the installation instructions
and those in section Vent the Water “4.5
Heater for adequate combustion air and ”
exhaust.
• If a water heater is installed in a closed
water supply system, such as one having a
backflow preventer in the cold water supply
line, means shall be provided to control
thermal expansion. Contact the water
supplier or local plumbing inspector on how
to control thermal expansion.
• Should overheating occur or the gas supply
fail to shut off, turn off the manual gas
control valve to the appliance.
(En cas de surchauffe ou si l alimentation ’
en gaz ne s arrête pas, fermez ’
manuellement le robinet d arrêt de ’
l admission de gaz.)’
• Combustion air must be free of chemicals,
such as chlorine or bleach, that produce
fumes. These fumes can damage
components and reduce the life of your
appliance.
DO NOT
• DO NOT install the water heater outdoors
without the Rinnai outdoor vent cap (Part #
RXOVC).
• DO NOT install the water heater indoors
with the Rinnai outdoor vent cap (Part #
RXOVC)
• DO NOT install the water heater in an area
where water leakage of the unit or
connections will result in damage to the
area adjacent to the appliance or to lower
floors of the structure. When such locations
cannot be avoided, it is recommended that
a suitable drain pan, adequately drained, be
installed under the water heater. The pan
must not restrict intake air flow.
• DO NOT install the water heater in an area
with negative air pressure.
• DO NOT obstruct the flow of combustion
and ventilation air.
• DO NOT use chemically treated water (i.e.
chlorinated water or salt water for pools or
spas) in the appliance.
• DO NOT use substitute parts that are not
authorized for this appliance.
18 Rinnai Tankless Water Heater Installation and Operation Manual
*Source: Part 143 National Secondary Drinking Water Regulation
Table 5. Water Quality Guidelines
This section provides information on the
importance of water quality to the Rinnai
Tankless Water Heater. The information is
intended to serve as a general guide only
and is not a complete list of water quality
guidelines. Consideration of care for your
water heater should include evaluation of
water quality. The water must be potable,
free of corrosive chemicals, sand, dirt, or
other contaminants. It is up to the trained
and qualified professional to ensure the
water does not contain corrosive chemicals
or elements that can affect or damage the
Rinnai Tankless Water Heater. Water that
contains chemicals exceeding the levels
listed below can damage the Rinnai
Tankless Water Heater. Replacement of
components due to water quality damage is
not covered by the warranty.
If you install this water heater in an area that
is known to have hard water or that causes
scale build up, the water must be treated -
and may require a more frequent flushing
schedule. This water heater includes a
service indicator: Service Soon, (see SS
section Configure Parameter Settings“4.13 ”
for instructions on adjusting parameter
settings). When selected in the parameter
settings, an code will display on the SS
controller indicating that it is time to flush
and service the water heater. Scale build-up
is caused by hard water and can be
accelerated if the water heater is set at a
high temperature. Rinnai offers
Southeastern Filtration ScaleCutter Water ’s “
Conditioning System that offers superior ”
lime scale prevention and corrosion control.
Refer to section Accessories for more “3.6 ”
information.
When selecting an installation location, you
must ensure that all water heater and venting
clearances will be met and that the vent length
will be within required limits. Consider the
installation environment, water quality, and the
need for freeze protection. Requirements for
the gas line, water lines, electrical connection,
and condensate disposal can be found in their
respective installation sections in this manual.
• Air surrounding the water heater, venting, and vent
termination(s) is used for combustion and must be
free of any compounds that cause corrosion of
internal components.
• These include corrosive compounds that are found
in aerosol sprays, detergents, bleaches, cleaning
solvents, oil based paints/varnishes, and -
refrigerants. The air in hair/nail salons, spas, dry
cleaning stores, photo processing labs, and storage
areas for pool supplies often contains these
compounds. Therefore, it is recommended that
external (outdoor) installations be used for these
locations where possible. In applications utilizing
room air where there are high levels of particulates,
Rinnai offers a room air screen.
• The water heater, venting, and vent termination(s)
should not be installed in any areas where the air
may contain these corrosive compounds.
• Install the water heater as far away as possible from
any air inlet vents. Corrosive fumes, sometimes
found in hair/nail salons, spas, or other industries
exposed to toxic fumes, may be released through
these vents when not in operation. Chemicals that
are corrosive in nature should not be stored or used
near the water heater or vent termination. This
requirement applies to indoor and outdoor
installations.
• In coastal regions, the water heater should be
installed so that it is sheltered/protected from
exposure to sea breeze. Exposure to salty spray or
breeze can cause corrosion of the water heater.
• DO NOT install the water heater in areas where
intake air might be contaminated with chemicals.
• DO NOT use room air in applications where the
indoor air is corrosive. Install the water heater as
direct vent in a sealed closet so that it is protected
from the potential of contaminated indoor air.
• Install the water heater and/or vent termination as
far away as possible from exhaust vent hoods and
dryer vents.
• Damage and repair due to corrosive compounds in
the air is not covered by warranty.
Contaminant Maximum Level
Total Hardness Up to 200 mg/L
Aluminum * Up to 0.2 mg/L
Chlorides * Up to 250 mg/L
Copper * Up to 1.0 mg/L
Dissolved Carbon Dioxide (CO2) Up to 15.0 mg/L
Iron * Up to 0.3 mg/L
Manganese * Up to 0.05 mg/L
pH * 6.5 to 8.5
TDS (Total Dissolved Solids) * Up to 500 mg/L
Zinc * Up to 5 mg/L

Produktspecifikationer

Varumärke: Rinnai
Kategori: Pannor & pannor
Modell: RX160iN

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