Rinnai ES17 User 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 qualified
installer, service agency or the gas supplier.
WARNING: If the information in these instructions is not
followed exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
Owner’s Operation and Installation Manual for the
ES17 (RHFE-433RFA)
ES22 (RHFE-558RFA)
Energysaver ®
Gas Direct Vent Wall Furnace
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
Table of Contents ........... 2
Safety Information .......... 3
Operating Instructions .... 6
Care and Maintenance ... 10
Fault Codes ....................12
Installation Instructions... 14
Parts List ........................ 33
Consumer Support ......... 42

2Rinnai Corporation ES17 / ES22 Manual
This appliance may be installed in an aftermarket, permanently located, manufactured home
(USA only) or mobile home, where not prohibited by local codes.
This appliance is only for use with the type of gas indicated on the rating plate. This appliance
is not convertible for use with other gases, unless a certified kit is used.
Table of Contents
This appliance may be installed as an OEM installation in a manufactured home (USA only) or
mobile home and must be installed in accordance with the manufacturer’s instructions and the
Manufactured Home construction and Safety Standard, Title 24 CFR, Part 3280, in the United
States, or the Mobile Home Standard, CAN/CSA Z240 MH Series, in Canada. This appliance
is only for use with types of gas indicated on the rating plate. A conversion kit is supplied with
the appliance.
Consumer Safety Information
Safety Definitions............................................. 3
Safety Behaviors and Practices....................... 3
Safety Features ............................................... 4
Specifications
Appliance Specifications.............................. 4, 5
Features........................................................... 5
Operating Instructions
Getting to Know your New Heating Appliance 6
Control Panel ................................................... 7
Operating the Heater Manually.................... 8, 9
Care and Maintenance .................................. 10
Before Making a Service Call ........................ 11
Fault Codes ................................................... 12
Restart Function ............................................ 13
Troubleshooting ............................................. 13
Installation Instructions
General Instructions .......................................14
Gas Connection..............................................15
Clearances to Combustibles ..........................15
Attach Back Covers (Sides Only) ...................15
Flue Terminal Clearances ........................16, 17
Dimensions.....................................................18
Installation Parts ............................................19
Drilling Flue Hole ............................................20
Flue Manifold Installation..........................21, 22
Extension Kit Installation .......................... 23-26
Connecting the Appliance ..............................27
Operating Instructions ....................................28
Cut-Away Diagram .........................................29
Wiring Diagram...............................................30
Ladder Diagram..............................................31
Flow Diagram .................................................32
Parts List................................................... 33-41
Consumer Support
Warranty Information......................................42
Limited Warranty ............................................43

3
Rinnai Corporation ES17 / ES22 Manual
WARNING
CAUTION
Safety Behaviors and Practices
• Do not block the warm air discharge. Do not allow
anyone to sleep directly in front of the appliance.
• Due to high temperatures, the appliance should be
located out of traffic and away from furniture and
draperies.
• Children and adults should be alerted to the
hazards of high surface temperature and should
stay away to avoid burns or clothing ignition.
• Young children should be carefully supervised
when they are in the same room as the appliance.
• Clothing or other flammable material should not be
placed on or near the appliance.
• Any safety screen or guard removed for servicing
must be replaced prior to operating the appliance.
• Do not insert items into the louvers.
• Do not spray aerosols near the appliance while it is
operating. Most aerosols contain butane gas which
is flammable.
• Do not unplug the appliance while it is operating or
while the fans are on.
• Keep the area around the appliance clear and free
from combustible materials, gasoline, and other
flammable vapors and liquids.
• Never store liquid propane containers indoors.
• 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.
• This appliance is equipped with a three-prong plug
for your protection against shock hazard and
should be plugged directly into a properly grounded
three-prong receptacle. Do not cut or remove the
ground prong from this plug.
• Any alteration to the appliance or its controls can
be dangerous.
• Do not operate appliance with the panels removed,
cracked or broken. Replacement of the panels
should be done by a licensed or qualified service
person.
Consumer Safety Information
Safety Definitions
This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or hurt you and
others.
Indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
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.
DANGER
CAUTION
WARNING
• Do not use bare hands to touch the front louvers
due to high temperatures which may cause burns.
Repairs should be performed by a qualified
service technician. Consumer should not repair by
yourself.

4Rinnai Corporation ES17 / ES22 Manual
)ylnoASU(emohderutcafunamroFnoitacilppA or mobile home or residential installation
convertible for use with natural gas and liquefied petroleum gases (propane /
LPG) when provision is made for the simple conversion from one gas to the
other.
For commercial setting.
For installation at altitudes up to 10,200 feet (3109 m).
General Description Forced combustion, forced convection, flued gas furnace
cinortcelenottubhsuPnoitarepO
Gas Connection 1/2 in NPT
Gas Control Electronic
renrubnesnuBleetssselniatSsrenruB
Temperature Control Electronic thermostat
Ignition System Electronic spark ignition
Flue System The flue must be terminated to atmosphere with only flue components listed
with the appliance’s certification. Warranty will be voided if non listed
components are installed.
Humidifier Tray Capacity - 3 pints (1300 cc)
Electrical Connection AC 120V, 60 Hz, 45 watts (ES17), 50 watts (ES22)
Weight 53 lbs (24 kg)
Noise Level ES17: 33-39 dB , ES22: 33-43 dB
AFUE Rating ES17: Natural Gas: 81.0% Propane: 81.0%
ES22: Natural Gas: 80.0% Propane: 81.0%
Specifications
Rinnai is continually updating and improving products. Therefore, specifications are subject to change without
prior notice.
The efficiency rating of this appliance is a product thermal efficiency rating determined under continuous operating
conditions and was determined independently of any installed system.
Safety Features
• Overheat: The appliance will automatically shut
down when the appliance exceeds a predetermined
temperature.
• Flame Failure: The appliance will automatically
shut down if the burner flame is extinguished.
• Power Failure: The appliance will cut off the gas if
it loses electrical power.
• Power Surge Fuse: A glass fuse on the PC board
protects against overcurrent. If the fuse blows then
all indicator lamps will be off.
• Spark Detector: The appliance automatically
shuts down if there is an abnormal spark at ignition.
• Fusible Link: In case the overheat feature
prevents the temperature from rising then the
fusible link will break shutting off the appliance.
Appliance Specifications

5
Rinnai Corporation ES17 / ES22 Manual
Features
• Restarts automatically when ignition or combustion
fails.
• Clean Heating Forced Flue Type
• Easy Operation One-Touch Ignition
• Sensible Temperature Control Feature
• Comfortable Room Temperature Control and
Display
• Warm Air Outlet at Floor Level (keeps your feet
warm)
• Function Lock
• Room Temperature Setting Memory
• Clean the Air Filter - Indicator Lamp
• Energy Saving Economy Setting
• Humidifier Tray
• Air Flow Directional Louvers
• Direct Vent Easily Installed
• Proportional Heating Variable Capacity
• Hush! Quiet Operation
• Modern Design Minimizes Floor Space
Requirements
• Fault Code Message Display
Natural Gas Propane Gas
Minimum supply gas pressure 3.5 in (89 mm) W.C. 8.0 in (203 mm) W.C.
Maximum supply gas pressure 10.5 in (267 mm) W.C. 13.0 in (330 mm) W.C.
Appliance Specifications
Natural Gas Propane Gas
BTU/hour input Low 8200
High 16700
Low 8200
High 16700
BTU/hour output Low 6560
High 13360
Low 6560
High 13360
ES17
Natural Gas Propane Gas
BTU/hour input Low 8200
High 21500
Low 8200
High 20700
BTU/hour output Low 6560
High 17200
Low 6560
High 16560
ES22

6Rinnai Corporation ES17 / ES22 Manual
VENT TERMINAL
COMBUSTION/
EXHAUST
WARM AIR OUTLET
HUMIDIFIER
REMOVE BOTTOM
COVER AND PULL
OUT TO REFILL
BOTTOM COVER
HOLD BOTH SIDES
AND PULL TOWARD
YOU
THERMISTOR
GAS CONNECTIONS
1/2" NPT
POWER CORD
PLUG 120V AC
COMBUSTION AIR
INTAKE HOSE
EXHAUST PIPE
AIR FILTER
DISPLAY
TEMPERATURE
SETTING CONTROLS
ON/OFF SWITCH
TURNS MAIN POWER
ON/OFF
RATING PLATE
MODEL NUMBER,
SERIAL NUMBER,
GAS TYPE, ETC.
Getting to know your new Heating appliance
Operating Instructions

7
Rinnai Corporation ES17 / ES22 Manual
Control Panel
All buttons beep when operated.
RoomTemp
Set Temp
ON
ON/OFF
Filter
Lock Economy
Temp
Control
LOCK
Lamp is "green"
when this feature
is on.
FILTER LAMP
Flashes red when
filter is dirty.
OPERATION LAMP
This lamp turns
"green" when power
is on. Lamp will
change to "red"
when burner is on.
TEMPERATURE
BUTTONS
adjust temp. to
lower setting.
adjust temp. to
higher setting.
ENERGY SAVING
BUTTON
Lamp is green
when this feature is
activated.
ON/OFF BUTTON
Easy operation
One touch ignition

8Rinnai Corporation ES17 / ES22 Manual
Operating the Heater Manually
Turning the heater ON
When you press and release the ON/OFF button, the
Temperature Level lamps will illuminate, the
combustion fan will begin to run, and the spark will
ignite the main burner.
This heater has an automatic ignition system. When
the main burner has lit, the combustion lamp will glow
red, and the spark will stop.
If ignition does not occur after 15 seconds, the
appliance will automatically turn off and the
Temperature Level lamps will flash indicating a fault
code. This may occur when using the appliance for
the first time or if it has not been used for a while. Try
operating the appliance again.
There may be a smell of burning dust or oil the first
time the heater is lit or when the heater has been out
of operation for a long time.
The appliance may make noises after ignition or when
it is turned off. This is normal and is due to the
thermal expansion or contraction of its components.
Adjusting the Temperature
The temperature setting and the room temperature are
indicated by the L.E.D. display on the control panel.
When the appliance is turned on the temperature
setting will be displayed for 10 seconds. The display
will then show the room temperature. The default
temperature setting is 72° F.
To change the temperature setting press one of the
temperature control buttons once. The “Set Temp”
should light up and the display will show the current
temperature setting. Continue to press the control
buttons until the desired temperature setting is
reached. After 10 seconds the display will return to
showing the room temperature.
The thermostat automatically modulates the burner
and the fan to maintain the temperature setting.
The temperature settings available are:
• LO - burner is on minimum combustion
• 60° F - 80° F in two degree increments
• HI - burner is on maximum combustion
Turning the heater OFF
Press the ON/OFF button. Do not
turn off by unplugging at the power
outlet.
The fan will continue to run for a short time to prevent
the internal components from overheating.
ON/OFF
Economy Mode
Pressing the Economy button will cause
the appliance to go into Economy Mode
and the green lamp will glow. This results
in the temperature setting being reduced by
2° F, 30 minutes after the room
temperature has reached the temperature
setting. After another 30 minutes the
temperature setting is reduced another 2°
F. This could result in the temperature
setting being reduced by a maximum of 4° F. The
intent of this mode is to save energy.
When the heater is running at the LO setting, the
Economy Mode does not function.
Economy
ON
ON/OFF
Filter
RoomTemp
Set Temp
Temp
Control

9
Rinnai Corporation ES17 / ES22 Manual
CAUTION
Adjusting Air Flow Direction
The vertical louvers may be adjusted to move the air
flow more to the right or to the left.
Use a screw driver or similar object to bend each
louver to the desired position.
Do not bend repeatedly (no more than 5 times) or else
the louver will break.
The horizontal louver (which determines the vertical air
flow direction) is fixed and cannot be adjusted.
wolfriaehttsujdatonoD
louvers while warm air is
flowing.
Operating the Heater Manually
Adding Water to the Humidifier
Warm air is humidified when it passes over the water
in the tray.
To fill the tray, remove the bottom trim panel below the
louvers by pulling on both sides. Pull the tray out and
fill with water. Push the tray back in and attach the
bottom trim panel. Do not operate the appliance
unless the humidifier tray is installed.
During operation a small amount of condensation is
produced in the flue system and drains into the
humidifier tray.
CAUTION mottobehtevomertonoD
trim panel or the humidifier
tray while warm air is
flowing.
Lock
This feature locks the buttons to
prevent unintended operation.
Press the Lock button to activate and
the lamp will glow. Pressing and
holding the Lock button for two seconds
will disengage the Lock.
If the Lock is engaged while the unit is
operating, all buttons will be disabled
except for the ON/OFF button.
If the Lock is engaged while the unit is
off, then all buttons will be disabled. The Lock must
be disengaged in order to turn the unit on.
Filter Lamp
If the filter lamp flashes during
operation, check the air filter for
dust. If dust is present, clean the
filter. See the Care and
Maintenance section. Turn the
heater off before cleaning the filter.
When the filter lamp flashes, the
beep is known 5 times every
5 minutes.
Filter
ON
ON/OFF
Sensible Temperature Control
The sensible temperature control feature allows
comfortable heating which matches the conditions in
the room.
Based on the information collected by the room
temperature thermistor when the heating starts, the
heating capacity is automatically adjusted to achieve
a comfortable heating effect and to reach the
temperature setting quickly.
Lock

10 Rinnai Corporation ES17 / ES22 Manual
CAUTION Prevent dust from
accumulating on the power
cord, side covers, and parts
behind the appliance.
Care and Maintenance
Filters
Dirty filters reduce the air flow and the appliance’s
ability to produce heat. The filters should be cleaned
frequently during the heating season. If the filters
become blocked the filter indicator lamp will flash and
the appliance will beep. Eventually the appliance will
turn off and display fault
code 14 on the control panel
display.
To clean the filters, the
appliance should be OFF
and cool. Remove the filter
and clean it using a soft dry
cloth or vacuum. If the filter
is greasy wash with warm
soapy water, rinse, and dry
completely.
Maintenance
All maintenance and service are to be performed by a
qualified service technician, preferably one who has
attended Rinnai service training classes on the Direct
Vent products.
The appliance should be inspected annually by a
qualified service technician. More frequent cleaning
may be required due to excessive lint from carpeting,
bedding material, etc. It is imperative that control
compartments, burners, and circulating air passage
ways of the appliance be kept clean.
Any screen or guard removed for servicing the
appliance must be replaced prior to operating the
appliance. Clean as follows:
1. Turn heat off. Allow to cool for one hour.
2. Remove the front panel by removing eight screws.
3. Use pressurized air to remove dust from the main
burner, heat exchanger, and fan blades.
4. Use soft dry cloth to wipe cabinet.
Do not use wet cloth or spray cleaners on the burner.
The flue should be inspected annually for blockages or
damage.
Motors are permanently lubricated and do not need
periodic lubrication. Keep fan and motor free of dust
and dirt by cleaning annually.
Verify proper operation after servicing.
Visual Inspection of Flame
Check that the burner flames are operating normally.
The flame can be seen through the circular window
through the louvers.
When operating normally the burner flame should
appear as long, clear, blue, stable, streaks. Yellow
flames or an orange color is abnormal and
maintenance is required.
Care of Exterior
Dampen soft cloth with warm water. Wring water out
well and wipe the unit.
Do not use volatile substances such as benzene or
thinners. They cause fading of the paint and
deformation of the resin.
Snow Accumulation
Keep the area around flue terminal free of snow and
ice. The appliance will not function properly if the
intake air or exhaust is impeded by obstructions.
Refer to the Flue Terminal Clearances. The clearance
in Ref. A should be maintained from any snow
accumulation.
NORMAL
Flame Rod
Long, clear, blue,
stable flames
ABNORMAL
Yellow flames or
orange color
Flame Rod

11
Rinnai Corporation ES17 / ES22 Manual
Before Making a Service Call
Before making a service call please check the following:
At Ignition:
Heater does not operate.
Warm air does not flow when the burner
lights.
Smoke or strange smells are produced
on the first trial light up after installation.
Sharp clicking noises at ignition, or when
unit cuts down on the thermostat, or goes
out.
During Combustion:
Clunking noise when the thermostat
operates.
Unit is not heating room.
Air filter is blocked or the louvers are
blocked or obstructed.
Heater will not re-ignite after overheating.
When the unit is turned off.
Convection fan continues to run after
turning OFF.
Other Points:
Steam is discharged from the flue terminal .
Unit cuts off without apparent reason.
Power Failure.
Is the heater plugged in?
Have the fuses or breaker blown at the fuse box / breaker panel?
Is there a power failure?
Is the air filter blocked?
Is anything blocking the outlet for the hot air?
Is the flue blocked?
The fan is started automatically after a short delay.
This is to allow the heat exchanger to warm up, helping to avoid cold draughts.
This is caused by grease or oil and dust on the heat exchanger and will stop
after a short time.
This is simply expansion noise from the heat exchanger.
This is the sound of the solenoid gas valves opening and closing.
Is the air filter blocked?
Is the set temperature high enough?
Is the warm air outlet blocked by anything?
Are the doors and windows of the room closed?
Was the appliance correctly sized for the space?
Allow heater to cool, clean air filter, operate again.
Even after unit has cooled down, the heater does not ignite again. Repair is
necessary.
Contact a qualified / authorized service provider.
This is to remove the residual heat from the heat exchanger. The fan will stop
when the heater cools down.
High efficiency appliances tend to discharge water vapor on cold days. This
is normal.
Check whether filters are blocked. Dirty filters will cause the heater to overheat.
Switch OFF, then ON again when power is restored to re-set controls.

12 Rinnai Corporation ES17 / ES22 Manual
Fault Codes
If there is a malfunction the appliance may shut down
as a safety precaution and display a fault code to assist
in diagnosing the problem. The fault code will flash in
the display on the control panel. When making a
service call, this code will assist with diagnosing the
fault.
You may be able to clear the fault code by turning the
heater off and then on again. If the fault code remains
or returns on the next operation, contact Rinnai or your
nearest service agent and arrange for a service call.
[1] Remove any obstructions. The flue needs to be kept clear to expel exhaust gases. If the appliance fails to
operate contact a qualified service agency.
[2] If the fusible link needs replacement, it must be done by a qualified service agency. In addition, the cause of
the overheat needs to be determined. The fusible link is a one use safety device that breaks to shut off the
appliance.
CODE DISPLAYED FAULT REMEDY
eruliaFnoitingI11
Check that gas is turned ON.
Check that the vent termination is not
blocked.
Refer to the Restart Function explanation.
Service call if repeated.
taehrevO41 Clean filter.
Service call if repeated. [1]
taehrevOmooR61 Lower room temperature to less than 104°F
(40°C).
31 Room Temperature Sensor
Faulty Service call.
32
33 Overheat Temperature Sensor
Faulty Service call.
34
.llacecivreSnwodkaerBrosneS94
.llacecivreSeruliaFrekrapS35
61 Combustion Fan Failure Service call.
70 Faulty ON/OFF Switch Service call.
.llacecivreSsdioneloSytluaF17
.llacecivreSdoRemalFytluaF27
73 Communication Error Turn heater OFF, then ON again.
kcolBeulF99 Check around the flue terminal for blockage.
[2]

13
Rinnai Corporation ES17 / ES22 Manual
Troubleshooting
Problem
Remedy
Cause
Not Plugged In
Power Failure
(Initial Installation)
Air In Gas Pipe
Gas Filter Blocked
Miss Ignition
Flue terminal obstructed
Flue manifold not connected
Louver obstructed
Air filter blocked
Gas Escape
Function Lock Set
Gas turned off at meter, tank,
or valve.
Plug In
Push On/Off button to attempt
restart after power is restored.
Purge air
(Installer)
Service Call
Service Call
Clear obstruction
Service Call
Clear obstruction
Clean filter
Service Call
Cancel Function Lock
Turn gas on
No ON indicator Burner doesn’t ignite
Unusual combustion
Combustion stops
during operation
Smell of gas
Noisy ignition
Takes too long to warm the room
If the appliance fails to ignite, the appliance will attempt ignition after 1 hour. The “Ignition Failure” fault code, 11,
will appear during that hour and disappears after a successful ignition. If ignition fails again, then the fault code
will remain and another attempt to ignite will occur in 1 hour. The fault code is not stored in the fault code history.
If the flame is extinguished during forced combustion then the appliance will attempt ignition after 1 hour. The
“Ignition Failure” fault code, 11, will appear during that hour and disappears after a successful ignition. Forced
combustion takes place for about 15 seconds after ignition. After this time, the temperature control logic controls
the combustion.
If the flame is extinguished (burner combustion failure) while the temperature control logic is operating the
appliance, then the appliance will immediately attempt ignition. No fault code will appear.
Restart Function

14 Rinnai Corporation ES17 / ES22 Manual
Installation Instructions
• A qualified service technician should install the
appliance and inspect it before use.
• If you move, check the gas type in your new area.
The local gas authority will be able to advise on
local regulations.
• 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, or the Natural
Gas and Propane Installation Code, CSA B149.1.
• A manufactured home (USA only) or mobile home
OEM installation must conform with the
Manufactured Home Construction and Safety
Standard, Title 24 CFR, Part 3280, or, when such a
standard is not applicable, the standard for
Manufactured Home Installations, ANSI/NCSBCS
A225.1, or the standard for Gas Equipped
Recreational Vehicles and Mobile Housing, CSA
Z240.4.
• 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, or the Canadian Electrical
Code, CSA C22.1.
• Appliance input ratings are based on sea level
operation and need not be changed for operation up
to 2000 ft (609.9 m) elevation. For operation at
elevations above 2000 ft (609.9 m), refer to the
Conversion Manual.
• The appliance and its appliance 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).
• The appliance must be isolated from the gas supply
piping system by closing its equipment shutoff valve
during any pressure testing of the gas supply piping
system at test pressures equal to or less than 1/2
psi (3.5 kPa).
• If the flooring is carpet, tile, or other combustible
material other than wood, then the appliance must
be installed on a metal or wood panel extending the
full width and depth of the appliance.
• This appliance discharges a large volume of warm
air next to the floor. Any particles in the air such as
cigarette smoke could cause discoloration in nylon
carpets containing dyes or vinyl surfaces.
• This appliance is not designed to built in.
• This appliance is only for use with the type of gas
indicated on the rating plate. This appliance is not
convertible for use with other gases unless a
certified kit is used. If conversion of the unit is
needed, conversions must be performed by a
qualified service provider at the owner’s expense.
• This appliance must not be connected to a chimney
flue serving a separate solid-fuel burning appliance.
• Rinnai suggests that a dedicated electrical circuit
with a 120VAC, 60 hz, 10 amp power source be
used.
• Two 1/8 in test plugs are provided for testing of
manifold differential pressure. They are located on
the modulating gas valve and on the burner
manifold.
• The appliance should be correctly sized for the
space it is required to heat.
• Follow the installations instructions and those in
Care and Maintenance for adequate combustion
and ventilation air.
• The flow of combustion and ventilation air shall not
be obstructed.
• Clearances to access the appliance during servicing
are 2 inches (50 mm) from the sides, 40 inches (1
m) from the front, and 9 inches (225 mm) from the
top.
General Instructions
WARNING
Do not use substitute materials.
Use only parts certified with the appliance.
If installation is at a location above
2001 ft (610 m), then follow the Adjust
Gas Pressure Settings procedure in
the Conversion Manual.
If installation is at or below 2000 ft
(610 m) then the pressure settings do
not need to be adjusted.
NOTICE

15
Rinnai Corporation ES17 / ES22 Manual
Gas Connection
Clearances to Combustibles
When determining where to install the appliance
the clearances to combustibles shown in the
figure must be followed. Also refer to the Safety
Behaviors and Practices section. The clearance
to combustibles from the top is zero.
Attach Back Covers (Sides Only)
Attach back covers as shown.
10"
0"
2"
2"
40"
• The gas supply line shall be gas tight, sized and so
installed as to provide a supply of a gas sufficient to
meet the maximum demand of the heater without
loss of pressure.
• A shut off valve and appliance connector valve
should be installed in the upstream of the gas line to
permit servicing.
• Flexible pipe and any appliance connector valve
used for gas piping shall be types approved by
nationally recognized agencies.
• Any compound used on the threaded joint of the gas
piping shall be a type which resists the action of
liquefied petroleum gas (propane / LPG).
• After completion of gas pipe connections all joints
including the heater must be checked for gas
tightness by means of leak detector solution, soap
and water, or an equivalent nonflammable solution,
as applicable. (Since some leak test solutions,
including soap and water, may cause corrosion or
stress cracking, the piping shall be rinsed with water
after testing, unless it has been determined that the
leak test solution is non-corrosive.)
• Check the gas supply pressure immediately
upstream at a location provided by the gas
company. Supplied gas pressure must be within the
limits shown in the Specifications section.
• Refer to an approved pipe sizing chart if in doubt
about the size of the gas line.
• Install manual gas cut-off valve so that it can be
accessed for easy operation. Do not conceal
manual cut-off valve behind back spacer.
WARNING
When connecting the gas valve or other gas
components in the gas line, use a backup wrench to
ensure the connection is gas tight.
Engage Lugs
Secure With
Screws

16 Rinnai Corporation ES17 / ES22 Manual
Flue Terminal Clearances
X
V
AIR SUPPLY INLET VENT TERMINAL
AREA WHERE TERMINAL IS NOT
PERMITTTED
INSIDE
CORNER DE TAIL
FIXED CLOSED
OPERABLE
FIXED
CLOSED
OPERABLE
B
B
B
A
J
BM
C
F
B
B
E
D
L
G
A
H
K
I
SNOW
TERMINATION
Clearance in Ref. A also
applies to anticipated
snow line
STANDARD INSTALLATION OF FLUE MANIFOLD. Diagram below shows minimum clearances and distances from obstructions. Also check local regulations.
Wall
Non Flammable
Flammable
Opposite Wall
Floor
10
20
24
(250mm)
24(600mm)
(500mm)
(600mm)

Rinnai Corporation ES17 / ES22 Manual 17
Flue Terminal Clearances
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 Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
∗For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B149.1, clearances are in accordance with local
installation codes and the requirements of the gas supplier.
Ref Description Canadian Installations US Installations
A Clearance above grade, veranda, porch, deck, or balcony. (Take into
account the anticipated snow line) 12 inches (30 cm) 12 inches (30 cm)
B Clearance to window or door that may
be opened
6 inches (15 cm) for
appliances < 10,000 BTUh;
12 inches (30 cm) for
appliances > 10,000 BTUh
and < 100,000 BTUh,
36 inches (91 cm) for
appliances > 100,000 BTUh
6 inches (15 cm) for
appliances < 10,000 BTUh;
9 inches (23 cm) for
appliances > 10,000 BTUh
and < 50,000 BTUh,
12 inches (30 cm) for
appliances > 50,000 BTUh
C Clearance to permanently closed * *
D
Vertical clearance to ventilated soffit,
located above the terminal within a
horizontal distance of 2 feet (61 cm)
from the center line of the terminal
* *
E Clearance to unventilated soffit * *
F Clearance to outside corner * *
G Clearance to inside corner 20 inches (50 cm) 20 inches (50 cm)
H Clearance to each side of center line extended above meter/regulator
assembly
3 feet (91 cm) within a height
15 feet (4.5 m) above the
meter/regulator assembly *
I Clearance to service regulator vent 3 feet (91 cm) *
J Clearance to nonmechanical air supply inlet to building or the combustion air
inlet to any other appliance
6 inches (15 cm) for
appliances < 10,000 BTUh;
12 inches (30 cm) for
appliances > 10,000 BTUh
and < 100,000 BTUh,
36 inches (91 cm) for
appliances > 100,000 BTUh
6 inches (15 cm) for
appliances < 10,000 BTUh;
9 inches (23 cm) for
appliances > 10,000 BTUh
and < 50,000 BTUh,
12 inches (30 cm) for
appliances > 50,000 BTUh
K Clearance to a mechanical air supply
inlet 6 feet (1.83 m) 3 feet (91 cm) above if within
10 feet (3 m) horizontally
L Clearance above paved sidewalk or
paved driveway located on public 7 feet (2.13 m) 1*
M Clearance under veranda, porch, deck,
or balcony
12 inches (30 cm) to non-
flammables 2
24 inches (60 cm) to
flammables 2
12 inches (30 cm) to non-
flammables 2
24 inches (60 cm) to
flammables 2

18 Rinnai Corporation ES17 / ES22 Manual
Dimensions
21 13/16" (554mm)
19 15/16" (506mm)
8 7/16"(214mm)
Power supply cable
29 1/2" (750mm)
8 9/16"
(217mm)
9 5/8"
(245mm)
Exhaust at rear of unit
3 7/16" (88mm)
11 " (280mm)
1"
(25mm)
3 3/8" (85mm)
6 1/2" (165mm)
R8.0"
(R206mm)
2 3/5"(66mm)
(R251mm)
R9.9"
R10.6"
(R270mm)
17 16/25"(448mm)

19
Rinnai Corporation ES17 / ES22 Manual
Installation Parts
The following flue manifold sizes are
available for different wall thicknesses:
Name Kit No. fits walls
S Vent Kit FOT-150 3 - 4 1/2 in (75 - 115 mm)
A Vent Kit FOT-151 4 1/2 - 9 1/2 in (115 - 240 mm)
B Vent Kit FOT-152 9 1/2 - 15 3/4 in (240 - 400mm)
C Vent Kit FOT-153 15 3/4 - 23 5/8 in (400 - 600 mm)
D Vent Kit FOT-154 23 5/8 - 31 1/2 in (600 - 800 mm)
The following items are included with the appliance:
Flue Manifold S laesrebburerap1 1
(‘A’ Flue units only)
(For weatherboard installations)
1
Manual Valve
Set
Owner’s Manual
Conversion Manual
Conversion Kit
Template
“A” Vent Kit, FOT-151
Back Spacer
Set
Pipe Stopper A
Pipe Stopper B
Ring
Plastic tie
for air inlet
Plastic tie
(L=250mm)
(M4
Screw
Screw
×20)
(M4.8×32)
Wood Screws
1
1
1
1
1
1
1
3
5
1
1
6
2
Air Filter
(M4)
Screw
(M4)
Screw
(M4)
Wall Bracket Spacer Bracket 11
For Flue Pipe Stopper B
For Back Spacer Set For Flue Manifold
For Air Intake Clip Wall Bracket Screws

20 Rinnai Corporation ES17 / ES22 Manual
Do not cut the intake hose. Cutting
the intake hose may result in noise.
NOTICE
Drilling Flue Hole
Use a template (included) to
determine allowable location of the
flue hole
NOTICE For installation without using extension kits, the con-
figuration of the flue manifold, air intake hose, and
exhaust slide pipe should be as shown when instal-
lation is completed.
Ensure that there are no gas or water lines, or
electrical circuits in the wall location where the flue
hole is to be drilled.
Drill the flue hole using a 3 1/8 inch (80 mm) drill.
The center of the hole must be located anywhere
within the shaded area, unless extension kits are
used. See diagram.
For weatherboard walls, drill through the center of
the weatherboard from the outside first and then
through the plasterboard. A template is provided.
Flue Hole
3 1/8"
(80 mm)