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Rinnai
Pannor & pannor
V94iP
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Direct Vent Tankless Water Heater
Installaon and Operaon Manual
— Do not store or use gasoline or other ammable 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 instrucons.’ ’
• If you cannot reach your gas supplier, call the re department.
— Installaon and service must be performed by a licensed professional.
This enre manual must be le for the consumer. The consumer must read and
refer to this manual for proper operaon and to maintain the water heater.
If the informaon in these instrucons is not followed exactly, a re or explosion
may result causing property damage, personal injury or death.
WARNING
READ ALL OF THE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR OPERATING THIS WATER HEATER.
This manual provides informaon on the installaon, operaon, and maintenance of the water heater. For proper
operaon and safety, it is important to follow the instrucons and adhere to the safety precauons.
A licensed professional must install the water heater according to the exact instrucons on pages 4-27.
The consumer must read the enre manual to properly operate the water heater and to have regular maintenance
performed.
ANS Z21.10.3 CSA 4.3●
FOR INDOOR APPLICATIONS ONLY
V94i ...................... REU-VC2837FFU-US
V94Xi .................... REU-VC2737FFU-US
V75i ...................... REU-VC2528FFU-US
V65i ...................... REU-VC2025FFU-US
FOR OUTDOOR APPLICATIONS ONLY
V94e ..................... REU VC2837W- -US
V75e ..................... REU VC2528W- -US
V65e ..................... REU VC2025W- -US
SANITATION
Low Lead Content
NSF/ANSI 372
C US

2 Value Series Manual
Table of Contents
This is the safety alert symbol. This symbol alerts you to potenal hazards that can kill or hurt you
and others.
Indicates an imminently hazardous situaon which, if not avoided, will result in death or
serious injury.
Indicates a potenally hazardous situaon which, if not avoided, could result in death or
serious injury.
Indicates a potenally hazardous situaon which, if not avoided, could result in minor or
moderate injury. It may also be used to alert against unsafe pracces.
DANGER
CAUTION
WARNING
Table of Contents ..................................................... 2
Safety Behaviors and Pracces for the
Consumer and Installer ............................................ 3
Installaon Instrucons
(for the licensed professional) 4 .............................
Prepare for Installaon ...................................... 5
Determine Installaon Locaon ........................ 6
Freeze Protecon ............................................. 11
Checklist to Determine Installaon Locaon ... 12
Mount to Wall.................................................. 12
Remove the Front Panel .................................. 12
Installaon of Venng (indoor models only) ... 13
Condensate (indoor models only).................... 15
Checklist for Venng and Condensate
(indoor models only) ........................................ 15
Installaon of Plumbing ................................... 16
Checklist for Plumbing ..................................... 18
Installaon of Gas Supply ................................ 18
Connect Electricity ........................................... 20
Adjust for High Altude ...................................20
Adjust for Vent Length (indoor models only) .. 20
Checklist for Gas and Electricity ....................... 20
Installaon of Temperature Controller ............ 21
Final Checklist................................................... 23
Technical Data ........................................................ 24
Specicaons ................................................... 24
Dimensions....................................................... 25
Pressure Drop and Water Flow Curves ............ 26
Ladder Diagram................................................ 27
Operaon Instrucons ....................................... 28
Consumer Operaon Guidelines for the
Safe Operaon of your Water Heater .............. 29
How to Use the Temperature Controller ......... 30
How to Set the Temperature ........................... 31
Diagnosc Codes .............................................. 33
Required Maintenance.....................................36
Freeze Protecon and Winterizaon ........37
Flushing the Heat Exchanger .....................38
Manual Draining of the Water Heater ......39
State Regulaons .................................................... 40
Replacement Parts ................................................. 41
Consumer Warranty ............................................... 42
French Version ........................................................ 44
Important Safety Informaon
Safety Denions
NOTICE: Rinnai somemes shares customer contact informaon with businesses that we believe provide
products or services that may be useful to you. By providing this informaon, you agree that we can
share your contact informaon for this purpose. If you prefer not to have your informaon shared with
these businesses, please contact customer service and ask not to have your informaon shared. We
will however, connue to contact you with informaon relevant to the product(s) you registered and/
or you account with us.
If you have any quesons or feel that the manual is incomplete contact Rinnai at 1 800 621 9419--- .

Value Series Manual 3
CAUTION
• BURN HAZARD. Hot exhaust and vent may cause
serious burns. Keep away from the water heater
unit. Keep small children and animals away from
the unit.
• Hot water outlet pipes leaving the unit can be hot
to touch. In residenal applicaons, insulaon
must be used for hot water pipes below due to 36”
burn risk to children.
Safety Behaviors and Pracces for the Consumer and Installer
• Before operang, smell all around the appliance
area for gas. Be sure to smell next to the oor
because some gas is heavier than air and will sele
on the oor.
• Keep the area around the appliance clear and free
from combusble materials, gasoline, and other
ammable vapors and liquids.
• Combusble construcon refers to adjacent walls
and ceiling and should not be confused with
combusble or ammable products and materials.
Combusble and/or ammable products and
materials should never be stored in the vicinity of
this or any gas appliance.
• Always check the water temperature before
entering a shower or bath.
• To protect yourself from harm, before performing
maintenance:
Turn o the electrical power supply by
unplugging the power cord or by turning o the
electricity at the circuit breaker. (The
temperature controller does not control the
electrical power.)
Turn o the gas at the manual gas valve, usually
located immediately below the water heater.
Turn o the incoming water supply. This can be
done at the isolaon valve immediately below
the water heater or by turning o the water
supply to the building.
WARNING
• Use only your hand to push in or turn the gas
control knob. Never use tools. If the knob will not
push in or turn by hand, do not try to repair it; call a
licensed professional. Force or aempted repair
may result in a re or explosion.
• Do not use this appliance if any part has been under
water. Immediately call a licensed professional to
inspect the appliance and to replace any part of the
control system and any gas control which has been
under water.
• Do not use substute materials. Use only parts
cered for the appliance.
• Should overheang occur or the gas supply fail to
shut o, turn o the manual gas control valve to the
appliance.
• Do not adjust the DIP switch unless specically
instructed to do so.
• Do not use an extension cord or an adapter plug
with this appliance.
• Any alteraon to the appliance or its controls can be
dangerous and will void the warranty.
• Proper venng is required for the safe operaon of
this appliance.
• Ensure appliance venng is not blocked or parally
blocked.
• Ensure that in cases of freezing weather the water
heater and its water lines are protected to prevent
freezing.
California law requires this noce to be provided:
California Proposion 65:
This product contains chemicals known to the state of California to cause cancer, birth defects, or other
reproducve harm.
WARNING

4 Value Series Manual
It is recommended that a licensed professional install
the appliance, inspect it, and leak test it before use.
The warranty may be voided due to any improper
installaon.
The installer should have skills such as:
• gas sizing
• connecng gas lines, water lines, valves,
electricity,
• knowledge of applicable naonal, state, and
local codes.
• installing venng through a wall or roof
• training in installaon of tankless water heaters.
(Training can be accessed online at
www.trainingevents.rinnai.us)
Installaon Instrucons (for the licensed professional)
Installaon Steps
Prepare for Installaon ...................................... 5
Determine Installaon Locaon ......................... 6
Checklist to Determine Installaon Locaon ... 12
Mount to Wall .................................................. 12
Remove the Front Panel ..................................12
Installaon of Venng (indoor models only) ... 13
Condensate (indoor models only) .................... 15
Checklist for Venng and Condensate
(indoor models only) ........................................ 15
Installaon of Plumbing ................................... 16
Checklist for Plumbing ..................................... 18
Installaon of Gas Supply................................. 18
Connect Electricity ........................................... 20
Adjust for High Altude ...................................20
Adjust for Vent Length (indoor models only) ..20
Checklist for Gas and Electricity ....................... 20
Installaon of Temperature Controller ............ 21
Final Checklist...................................................23
General Instrucons Installer Qualicaons
DO NOT
• Do not install the V94i, V94Xi, V75i, or the V65i
outdoors.
• Do not install the V94e, V75e, or the V65e indoors.
• Do not install the appliance in an area where water
leakage of the unit or connecons will result in
damage to the area adjacent to the appliance or to
lower oors of the structure. When such locaons
cannot be avoided, it is recommended that a
suitable drain pan, adequately drained, be installed
under the appliance. The pan must not restrict
combuson air ow.
• Do not obstruct the ow of combuson and
venlaon air. Combuson air shall not be
supplied from occupied spaces.
• Do not use this appliance in an applicaon such as
a pool or spa heater that uses chemically treated
water . (This appliance is suitable for lling large or
whirlpool spa tubs with potable water.)
• Do not use substute parts that are not authorized
for this appliance.
MUST DO
• The installaon must conform with local codes or,
in the absence of local codes, with the Naonal
Fuel Gas Code, ANSI Z223.1/NFPA 54, or the
Natural Gas and Propane Installaon Code, CSA
B149.1. If installed in a manufactured home, the
installaon must conform with the Manufactured
Home Construcon and Safety Standard, Title 24
CFR, Part 3280 and/or CAN/SCA Z240 MH Series,
Mobile Homes.
• The appliance, when installed, must be electrically
grounded in accordance with local codes or, in the
absence of local codes, with the Naonal Electrical
Code, ANSI/NFPA 70 Canadian Electrical , or the
Code, CSA C22.1.
• The appliance and its appliance main gas valve
must be disconnected from the gas supply piping
system during any pressure tesng of that system
at test pressures in excess of 1/2 psi (3.5 kPa)
(13.84 in W.C.).
Type of installaon
• For installaon in residenal applicaons.
• Cered for installaon in manufactured (mobile)
homes.

Value Series Manual 5
Prepare for Installaon
Parts included
Tools needed
Materials needed
• You must follow the installaon instrucons and
those in Care and Maintenance for adequate
combuson air intake and exhaust.
INFORMATION
• If a water heater is installed in a closed water
supply system, such as one having a backow
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 overheang occur or the gas supply fail to
shut o, turn o the manual gas control valve to
the appliance.
• Keep the air intake locaon free of chemicals such
as chlorine or bleach that produce fumes. These
fumes can damage components and reduce the life
of your appliance.
• Tankless water heater
• MC-91-2 temperature controller (integrated into
indoor models; provided with outdoor models)
• Pipe wrenches (2)
• Adjustable pliers
• Screwdrivers (2)
• Wire cuers
• Gloves
• Safety glasses
• Level
Tools that might be needed
• Hammer drill with
concrete bits
• Saw
• Threading machine with
heads and oiler
• Core drill with diamond
head
• Torch set
• Copper tubing cuer
• Steel pipe cuer
Materials that may be needed
• Soap or gas leak
detector soluon
• Approved venng
• Teon tape
(recommended) or pipe
compound
• Pressure relief valve
• Heat tape
• Pipe insulaon
• Electrical wire and
conduit per local code
• Concrete wall anchors
• Oponal pipe cover
• Oponal temperature
controller
• 5/8” ID PVC exible
tubing
• 2 conductor 22 AWG
wire for controller
• Single gang electrical
box
• Wire nuts
• Unions, drain valves,
isolaon valves

6 Value Series Manual
Environment
Air surrounding the water heater, venng, and vent
terminaon(s) is used for combuson 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 beauty shops, dry cleaning
stores, photo processing labs, and storage areas for pool
supplies oen contains these compounds. Therefore it
is recommended that outdoor models be used for these
locaons where possible.
The water heater, venng, and vent terminaon(s)
should not be installed in any areas where the air may
contain these corrosive compounds. If it is necessary for
a water heater to be located in areas which may contain
corrosive compounds, the following instrucons are
strongly recommended.
IMPORTANT CONSIDERATIONS FOR:
Indoor/Internal Water Heaters
• DO NOT Install in areas where air for combuson
can be contaminated with chemicals.
• Before installaon, consider where air has the
ability to travel within the building to the water
heater.
• Where possible, install the water heater in a sealed
closet so that it is protected from the potenal of
contaminated indoor air.
• Chemicals that are corrosive in nature should not
be stored or used near the water heater.
Outdoor/External Water Heaters and Vent
Terminaons of Indoor/Internal Water Heaters
• Install the water heater as far away as possible
from exhaust vent hoods.
• Install as far away as possible from air inlet vents.
Corrosive fumes may be released through these
vents when air is not being brought in through
them.
• Chemicals that are corrosive in nature should not
be stored or used near the water heater or vent
terminaon.
Damage and repair due to corrosive compounds in the
air is not covered by warranty.
Consideraon of care for your water heater should
include evaluaon of water quality.
The water must be potable, free of corrosive chemicals,
sand, dirt, or other contaminates. It is up to the
installer to ensure the water does not contain corrosive
chemicals, or elements that can aect or damage the
heat exchanger. Water that contains chemicals
exceeding the levels below aect and damage the heat
exchanger. Replacement of the heat exchanger due to
water quality damage is not covered by the warranty.
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 or PPM
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
Determine Installaon Locaon
Water Quality
* Source: Part 143 Naonal Secondary Drinking Water
Regulaons
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/or the heat exchanger
ushed regularly.
When scale build-up in the heat exchanger begins to
aect the performance of the water heater, a diagnosc
code LC# will display. Flush the heat exchanger to “ ”
prevent damage to it. Scale build up is caused by hard
water set at a high temperature.
Rinnai oers Southeastern Filtraon ScaleCuer ’s “
Water Condioning System that oers superior lime ”
scale prevenon and corrosion control by feeding a
blend of control compounds into the cold water
supply.
You must ensure that clearances will be met and that
the vent length will be within required limits. Consider
the installaon environment, water quality, and need
for freeze protecon. Requirements for the gas line,
water lines, electrical connecon, and condensate
disposal can be found in their respecve installaon
secons of this manual.
Part Number Descripon
103000038 Southeastern Filtratrion
ScaleCuer System Feed3/4”
103000039 ScaleCuer Rell

Value Series Manual 7
[1] A vent shall not terminate directly above a sidewalk or paved driveway
that is located between two single family dwellings and serves both
dwellings.
[2] Permied only if veranda, porch, deck, or balcony is fully open on a
minimum of two sides beneath the oor.
For clearances not specied in , clearances are in ANSI Z223.1/NFPA 54
accordance with local installaon codes and the requirements of the gas
supplier.
Clearance to opposite wall is 24 inches (60 cm).
For indoor models, you must install a vent terminaon to bring in combuson air and expel exhaust.
Direct Vent (Indoor Unit) Other than direct vent (Outdoor unit)
Ref Descripon Canadian Installaons (CSA
B149.1)
US Installaons
(ANSI Z223.1 / NFPA 54)
Canadian Installaons
(CSA B149.1)
US Installaons
(ANSI Z223.1 / NFPA 54)
A Clearance above grade, veranda, porch, deck, or
balcony 12 inches (30 cm) 12 inches (30 cm) 12 inches (30 cm) 12 inches (30 cm)
B Clearance to window or door that may be opened 36 inches (91 cm) 12 inches (30 cm)
6 in (15 cm) for appliances ≤
10,000 Btuh (3 kW), 12 in (30
cm) for appliances > 10,000 Btuh
(3 kW) and Btuh (30 ≤ 100,000
kW), 36 in (91 cm) for appliances
4 (1.2 m) below or to side
of opening; 1 (300 mm)
above opening
C Clearance to permanently closed window * * * *
D
Vercal clearance to venlated sot, located
above the terminal within a horizontal distance of
2 feet (61 cm) from the center line of the terminal
* * * *
E Clearance to unvenlated sot * * * *
F Clearance to outside corner * * * *
G Clearance to inside corner * * * *
H Clearance to each side of center line extended * * * *
I Clearance to service regulator vent outlet
Above a regulator within 3
(91cm) horizontally of the
vercal center line of the
regulator vent outlet to a
maximum vercal distance of 15
(4.5 m)
*
Above a regulator within 3
(91cm) horizontally of the
vercal center line of the
regulator vent outlet to a
maximum vercal distance of 15
(4.5 m)
*
J
Clearance to nonmechanical air supply inlet to
building or the combuson air inlet to any other
appliance
36 inches (91 cm) 12 inches (30 cm)
6 in (15 cm) for appliances ≤
10,000 Btuh (3 kW), 12 in (30
cm) for appliances > 10,000 Btuh
(3 kW) and Btuh (30 ≤ 100,000
kW), 36 in (91 cm) for appliances
4 (1.2 m) below or to side
of opening; 1 (300 mm)
above opening
K Clearance to a mechanical air supply inlet 6 (1.83 m)
3 (91 cm) above if
within 10 (3 m)
horizontally
6 (1.83 m) 3 (91 cm) above if within
10 (3 m) horizontally
L Clearance above paved sidewalk or paved 7 (2.13 m) [1] * 7 (2.13 m) [1] 7 (2.13 m)
M Clearance under veranda, porch, deck, or balcony 12 inches (30 cm) [2] * 12 inches (30 cm) [2] *
Terminal Clearances
AIR SUPPLY INLET
VENT TERMINAL
AREA WHERE TERMINAL IS NOT PERMITTTED
X
V
SNOW
TERMINATION
Clearance in
Ref. also A
applies to
anticipated
snow line

10 Value Series Manual
Unit clearances
* 0 inches from vent components and condensate
drain line.
The clearance for servicing is 24 inches in front of the
water heater.
For closet installaon, clearance is 6 inches (152 mm)
from the front.
Indoor models: V94i, V94Xi, V75i, V65i Outdoor models: V94e, V75e, V65e
The clearance for servicing is 24 inches in front of the
water heater.
to Combusbles
inches (mm)
to Non-
Combusbles
inches (mm)
Top of Heater 12 (305) 2 (51)
Back of Heater 0 (zero) 0 (zero)
Front (Panel) 24 (610) 0 (zero)
Front (Exhaust) 24 (610) 24 (610)
Sides of Heater 6 (152) 1/8 (3.2)
Ground/Boom 12 (305) 2 (51)
to Combusbles
inches (mm)
to Non-
Combusbles
inches (mm)
Top of Heater 6 * (152) 2 *(51)
Back of Heater 0 (zero) 0 (zero)
Front of Heater 6 (152) 6 (152)
Sides of Heater 2 (51) 1/2 (13)
Ground/Boom 12 (305) 12 (305)
Vent 0 (zero) 0 (zero)
to side
to front
to top
to ground/b tot om
to side
to front
to top
to ground/b tot om

12 Value Series Manual
Mount to Wall
wall installaon
brackets
Checklist to Determine Installaon
Locaon
□ The water heater is not exposed to corrosive
compounds in the air.
□ The water heater locaon complies with the
clearances.
□ For indoor models, the planned venng will not
exceed the maximum length for the number of
elbows used.
□ The planned venng terminaon/air intake
locaon meets the clearances.
□ The water supply does not contain chemicals or
exceed total hardness that will damage the heat
exchanger.
□ A standard 3 prong 120 VAC, 60 Hz properly
grounded wall outlet (for indoor models) or other
120 VAC, 60 Hz source is available.
□ The installaon must conform with local codes or,
in the absence of local codes, with the Naonal
Fuel Gas Code, ANSI Z223.1/NFPA 54, or the
Natural Gas and Propane Installaon Code, CSA
B149.1. If installed in a manufactured home, the
installaon must conform with the Manufactured
Home Construcon and Safety Standard, Title 24
CFR, Part 3280 and/or CAN/SCA Z240 MH Series,
Mobile Homes.
□ Leave the enre manual taped to the water
heater (indoor models), temperature controller
(outdoor models), or give the enre manual
directly to the consumer.
1. Idenfy the installaon locaon and conrm that
the installaon will meet all required clearances.
2. Securely aach the water heater to the wall
using any of the holes in the wall installaon
brackets which are at the top and boom of the
water heater. Ensure that the aachment
strength is sucient to support the weight.
Refer to the weight of the water heater in the
Specicaons secon.
Use a leveling tool to ensure that the water
heater is level. Proper operaon requires that
the water heater be level.
NOTE: The water heater should be installed in an
upright posion. Do not install upside down or on its
side.
Remove the Front Panel
Slide the plasc trim pieces on each side of the water
heater to expose the screws.
Remove the 4 screws and pull o the front panel.

Value Series Manual 13
Manufacturer Listed and Tested Vent Products
for V94i, V94Xi, V75i and V65i Telephone Fax Contact
Ubbink Rolux Vent System www.rinnai.us 800-621-9419 678-829-1666
Heat Fab Saf T Vent SC system- - 800-772-0739 413-863-4803 custsvc@heat fab.com, -
www.heaab.com
Metal Fab Corr/Guard Vent/Air Intake System- 800-835-2830 316-943-2717 info@mtlfab.com,
www.metal fabinc.com-
Installaon of Venng (indoor models only)
Install the correct venng for your model according to the venng manufacturer’s instrucons and the
guidelines below.
Refer to the manufacturer s technical literature for specic part numbers and instrucons. ’
Venng Guidelines
DO NOT
• Do not use PVC, CPVC, ABS or galvanized material
to vent this appliance.
• Do not combine vent components from dierent
manufacturers.
• Vent diameter must not be reduced.
• Do not connect the venng system with an
exisng vent or chimney.
• Do not common vent with the vent pipe of any
other water heater or appliance.
MUST DO
• This water heater is a direct vent water heater and
therefore is cered and listed with the vent
system. You must use vent components that are
cered and listed with the water heater model.
• The vent system must vent directly to the outside
of the building and use outside air for combuson.
• Avoid dips or sags in horizontal vent runs by
installing supports per the vent manufacturer’s
instrucons.
• Support horizontal vent runs every four feet and
all vercal vent runs every six feet or in
accordance with local codes.
• Venng should be as direct as possible with a
minimum number of pipe ngs.
• Vent connecons must be rmly pressed together
so that the gaskets form an air ght seal.
• The vent piece connected to the water heater
must be secured with one self tapping screw.-
INFORMATION
• Refer to the instrucons of the vent system
manufacturer for component assembly
instrucons.
• If the vent system is to be enclosed, it is suggested
that the design of the enclosure shall permit
inspecon of the vent system. The design of such
enclosure shall be deemed acceptable by the
installer or the local inspector.
NOTICE
If it becomes necessary to access an enclosed vent
system for service or repairs, Rinnai is not responsible
for any costs or dicules in accessing the vent
system. The warranty does not cover obtaining
access to a vent system in an enclosed environment.

Value Series Manual 15
Condensate
(indoor models only)
Condensate formaon can occur in high eciency
direct vent appliances. Without proper drainage
condensate will damage the heat exchanger.
To prevent condensate damage follow these
instrucons.
DO NOT
• Do not allow condensate to enter the water
heater.
• Do not connect the condensate drain pipe directly
to the rain sewer.
• Do not connect the condensate drain line with an
air condioning evaporator coil drain.
MUST DO
• Use only vent that is approved and idened as
acceptable for your parcular model.
• For vercal terminaons, install a condensate drain
and trap as close as possible to the appliance.
• Slope the venng toward the appliance according
to the vent manufacturers installaon instrucons.
• All condensate must drain and be disposed of
according to local codes.
• Use only corrosion resistant materials for the
condensate drain lines such as PVC pipe or plasc
hose.
• The condensate drain pipe (along its enre length)
must be at least the same diameter as the drain
line, (5/8 inch NPT).
• The end of the condensate drain pipe should be
open to the atmosphere. The end should not be
under water or other substances.
• To minimize freezing of the condensate, run the
condensate drain line through an interior wall or
between insulaon and an interior wall.
• The condensate collector should be used for all
hydronic heang applicaons.
Checklist for Venng and
Condensate (indoor models only)
□ Verify proper clearances around the vents and air
intakes.
□ Ensure you have used the correct venng
products for the model installed and that you
have completely followed the venng
manufacturer s installaon instrucons and these ’
installaon instrucons.
□ Verify that the vent pipe has a downward slope or
grade to the outside of 1/4 inch per foot (1.2 ) °
OR if the vent pipe is sloped toward the water
heater (as some local codes require), that a
condensate collector is installed to allow
condensaon to drain away from the water
heater to a proper drain source.
□ Verify that condensate will not be allowed to
drain back into the water heater.
□ Verify that the vent system does not exceed the
maximum length for the number of elbows used.
INFORMATION
• A condensate trap is available, P/N 222053.
• Regions of cold climate will create more
condensate in the vent system. The condensate
collector should be used in cold climates.
• The condensate drain pipe should be as short as
possible and have a downward pitch.

16 Value Series Manual
Installaon of Plumbing
A manual water control valve must be placed in the
water inlet connecon to the water heater before it is
connected to the water line. Unions may be used on
both the hot and cold water lines for future servicing
and disconnecon of the unit.
DO NOT
• Do not introduce toxic chemicals such as those
used for boiler water treatment to the potable
water used for space heang.
MUST DO
• The piping (including soldering materials) and
components connected to this appliance must be
approved for use in potable water systems.
• Purge the water line to remove all debris and air.
Debris will damage the water heater.
• If the appliance will be used as a potable water
source, it must not be connected to a system that
was previously used with a nonpotable water
heang appliance.
• Ensure that the water lter on the water heater is
clean and installed.
Piping Requirements
Pressure Relief Valve Requirements
Install the pressure relief valve according to local
plumbing codes and these instrucons.
An approved pressure relief valve is required by the
American Naonal Standard (ANSI Z21.10.3) for all
water heang systems, and shall be accessible for
servicing.
DO NOT
• Do not plug the relief valve and do not install any
reducing ngs or other restricons in the relief
line. The relief line should allow for complete
drainage of the valve and the line.
• Do not place any other type valve or shut o
device between the relief valve and the water
heater.
MUST DO
• The relief valve must comply with the standard for
Relief Valves and Automac Gas Shuto Devices for
Hot Water Supply Systems ANSI Z21.22 and /or the
standard Temperature, Pressure, Temperature and
Pressure Relief Valves and Vacuum Relief Valves,
CAN1 4.4-.
• The relief valve must be rated up to 150 psi and to
at least the maximum BTU/hr of the appliance.
• The discharge from the pressure relief valve should
be piped to the ground or into a drain system per
local codes.
• The pressure relief valve must be manually
operated once a year to check for correct
operaon.
• The relief valve should be added to the hot water
outlet line and near the hot water outlet according
to the manufacturer’s instrucons. DO NOT place
any other type valve or shut o device between
the relief valve and the water heater.
INFORMATION
• If a relief valve discharges periodically, this may be
due to thermal expansion in a closed water supply
system. Contact the water supplier or local
plumbing inspector on how to correct this
situaon. Do not plug the relief valve.
• The American Naonal Standard (ANSI Z21.10.3)
does not require a combinaon temperature and
pressure relief valve for this appliance. However,
local codes may require a combinaon
temperature and pressure relief valve.
Isolaon Valves
Rinnai strongly recommends the installaon of
isolaon valves on the cold and hot water lines
because they provide the ability to isolate the water
heater from the structure s plumbing and allow quick ’
access to ush the heat exchanger. Flushing the heat
exchanger regularly is required as part of the proper
maintenance for this water heater.
Water discharged from the pressure relief valve could
cause severe burns instantly or death from scalds.
WARNING

Value Series Manual 17
Piping Diagram for Basic Installaon
GasSup
ply
3/4"C
oldWat
e
rSupply
Line
3/4" Hot Water Supp Lily ne
W er He erat at
3/4"G
asConne
ction
For Building Fixtures
Pressure Relief Valve
3/4" Ball Valve
3/4" Union
Check Valve
S
Pressure Regulator
Circulating Pump
Solenoid Valve
Boiler Drain Valve
KEY This is not an engineered drawing. It is intended only as a guide and not
as a replacement for professionally engineered project drawings. This
drawing is not intended to describe a complete system. It is up to the
contractor/engineer to determine the necessary components and
configuration of the particular system being installed. This drawing does
not imply compliance with local building code requirements. It is the
responsibility of the contractor/engineer to ensure installation is in
accordance with all local building codes. Confer with local building
officials before installation.
Produktspecifikationer
Varumärke: | Rinnai |
Kategori: | Pannor & pannor |
Modell: | V94iP |
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