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.
— 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.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
Page 2
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.
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.
This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or hurt you and
others.
DANGER
WARNING
CAUTION
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.
Safety Behaviors and Practices
WARNING
• 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.
CAUTION
• 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.
• Do not use bare hands to touch the front louvers
due to high temperatures which may cause burns.
• Wear hand protection when touching the side back
covers, front louver, and rear intake for the
convection fan.
Rinnai Corporation EX17 / EX22 Manual
3
Page 4
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.
Specifications
Appliance Specifications
)ylno ASU( emoh derutcafunam roF noitacilppAor 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
cinortcele nottub hsuP noitarepO
Gas Connection1/2 in NPT
Gas Control Electronic
renrub nesnuB leets sselniatS srenruB
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.
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.
4
Rinnai Corporation EX17 / EX22 Manual
Page 5
Appliance Specifications
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.
EX17
Natural Gas Propane Gas
BTU/hour input Low 8200
High 16700
BTU/hour output Low 6560
High 13360
Low 8200
High 16700
Low 6560
High 13360
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
EX22
Natural Gas Propane Gas
BTU/hour input Low 8200
High 21500
BTU/hour output Low 6560
High 17200
• 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
Low 8200
High 20700
Low 6560
High 16560
Rinnai Corporation EX17 / EX22 Manual
5
Page 6
Operating Instructions
Getting to Know your New Heating appliance
WARM AIR OUTLET
HUMIDIFIER
REMOVE BOTTOM
COVER AND PULL
OUT TO REFILL
BOTTOM COVER
HOLD BOTH SIDES
AND PULL TOWARD
YOU
DISPLAY
TEMPERATURE/
TIMERS
SETTING CONTROLS
ON/OFF SWITCH
TURNS MAIN POWER
ON/OFF
RATING PLATE
MODEL NUMBER,
SERIAL NUMBER,
GAS TYPE, ETC.
THERMISTOR
GAS CONNECTIONS
1/2" NPT
POWER CORD
PLUG 120V AC
6
AIR FILTER
EXHAUST PIPE
VENT TERMINAL
COMBUSTION/
EXHAUST
COMBUSTION AIR
INTAKE HOSE
Rinnai Corporation EX17 / EX22 Manual
Page 7
Control Panel
Clock: used to set the current
time and day.
Up/Down: function
of these buttons
varies depending on
the operating mode.
(refer to the table
below for details).
MODEOPERATION
Clock Set
Timer Program
Frost Protection
To set current time
and day
Select days of
week, time and
temperature
Set Frost
Protection
temperature
LED DISPLAY
Select: When programming the
timers, this button is used to select
and confirm day, time and
temperature settings.
Programming
ClockSelect
Function Lock
Timers
Override
Override: overrides
the current timer
setting by reversing
the current operation.
Auto: toggles the heater
between AUTO(for timer
operation) and MANUAL
operation modes.
EcoFrost
Auto
Timers: used to carry
out timer programming
and confirm all
settings.
Frost: used to initiate
the Frost mode and
allows for a minimum
frost temperature to
ON/OFF
be set.
Eco: used to select the
Economy mode.
ON/OFF: this is the main on/
off switch for the heater.
Days:shows current
day of week or day(s)
being programmed.
Clock:shows current
time or pre-set program
time for timer.
am
pm
Mo Tu We Th Fr Sa Su
1 2 3 4 OFF
Periods:shows
current operating
period or period
being programed.
Function Lock:
indicates that the
function lock is on.
Temperatures:
shows pre-set and
room temperatures.
Auto/Man: indicates
Manual or Timer
operation mode.
SetRoom
Function Lock
Economy Mode
Clock:
shows when
the clock is
being set.
Economy Mode:
indicates that the
Economy Mode is on.
Sensible Temperature Control
Auto
FrostON
Man
Override On Off
Select
Clock
ProgramTimer
Temp Review Filter
Frost:indicates that the anti-frost mode is on and that
a minimum anti-frost temperature can be entered.
Override On/Off: indicates whether the
Override function is on and whether it has
turned the heater on or off(reverse function).
ON/ : indicates when the heater is
operating and whether the burner is
alight( ).
Review: indicates that
the review mode is on.
Filter:shows when the
filter needs to be cleaned.
Select Program Timer/Temp: indicates when the timers
are being programed-Start time "Select Program Timer"
or Temperature "Select Program Temp".
The sensible temperature control feature allows
comfortable heating which matches the conditions in
the room.
Rinnai Corporation EX17 / EX22 Manual
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.
7
Page 8
Setting the Clock
■ TO OPEN THE CONTROL PANEL
Lift lightly in the center of the lid. The control
panel lid will then drop backward to an angle.
Note: When the appliance is first
plugged in or after a power failure
longer than 24 hours the display
will show “PF”. And the appliance
will turn on due to the frost protection
function.
■ SETTING THE CURRENT TIME & DAY
(This example shows setting the clock to 8:20am on Saturday.)
DAY OF THE WEEK
Press the “Clock” button
1
once. The day of the week
Select
and is displayed.
Clock
Press either of the “▲” or “▼”
2
buttons until the correct day of
the week is displayed.
Set
Mo
Sa
Select
Clock
Select
Clock
Frost
Programming
ClockSelect
Programming
ClockSelect
Timers
Timers
3
4
5
Press the “Select” button once
to lock in and complete day of
the week selection. The time of
day will then flash.
am
Sa
Select
Clock
TIME OF DAY
To set the time press the “▲”
or “▼” buttons until the correct
time of day is displayed.
am
Sa
Select
Clock
Pressing either button once will change the time in single minutes.
Holding button down will change the time rapidly, first in minutes, then in hours.
CONFIRM SETTINGS
Press the “Select”or “Clock”
button once to lock in and
complete setting the time.
Select
The indicators will go out.
Clock
am
Sa
Programming
ClockSelect
Programming
ClockSelect
Programming
ClockSelect
Timers
Timers
Timers
8
Rinnai Corporation EX17 / EX22 Manual
Page 9
Operating the Heater Manually
■ To turn the heater ON:
1
Press the “ON/OFF” button.
ON/OFF
2
3
Check to see if the “Man” or “Auto”
indicator is displayed:
indicator
If the “Auto” indicator is displayed
then press the “Auto” button. The
indicator will change to “Man”.
Go to Step 3.
If the “Man” indicator is displayed
go to Step 3.
Select the desired room temperature
by pressing the “▲” or “▼” buttons.
pm
Tu
1
pm
Tu
pm
Tu
Set Room
Set Room
Set Room
AutoON
indicator
Man
Man
EcoFrost
Override
ON
ON
AutoON/OFF
Programming
ClockSelect
The heater will start and run for 90 seconds so that it can check the room temperature
(the indicator will show).
If the room temperature is lower than the pre-set or desired temperature the heater will continue to run.
If the room temperature is higher than the pre-set or desired temperature, the heater will go into “stand-
by” mode, and will start when the room temperature falls below the pre-set temperature.
Timers
If the heater does not ignite on initial use, this may be due to air remaining in the gas supply line. The
spark generator will only continue for 15 seconds. After this it will be necessary to press the ON/OFF
button OFF, then ON again.
■ To turn the heater OFF:
1
Press the “ON/OFF” button.
pm
Tu
Override
DO NOT turn heater off by unplugging the power cord.
The convection fan will continue to run until the appliance cools.
Rinnai Corporation EX17 / EX22 Manual
EcoFrost
AutoON/OFF
9
Page 10
Programmable Weekly Timer
• The four timer periods create up to four separate operating intervals, each with its own temperature setting.
• These periods can be programmed differently for each day of the week, or for a group of days: weekdays,
weekends, or the entire week.
• The programming covers a 24 hour time span (one day).
The two diagrams below graphically represent examples of weekday and weekend programs.
5:30am
Weekday Program
• Period 1 has been programmed to start at 5:30 am
with a temperature setting of 76° F. The appliance
will heat the room at 76° F until 8:00 am, when
period 2 starts.
• Period 2 has a temperature setting of “nothing” or
OFF, and so the heater will not operate again until
the start of period 3 at 5:00 pm.
• Period 3 heats the room from 5:00 pm to 9:30 pm
at 72° F.
• Period 4 turns the appliance OFF until Period 1
begins the next day.
MIDNIGHT
9:30pm
OFF
4
1
72°F
76°F
OFF
2
8:00am
MIDDAY
Weekend Program
• Period 1 has been programmed to start at 9:00 am
with a temperature setting of 76° F. The appliance
will heat the room at 76° F until 11:00 am, when
period 2 starts.
• Period 2 has a temperature setting of “nothing” or
OFF, and so the heater will not operate again until
the start of period 3 at 4:00 pm.
• Period 3 heats the room from 4:00 pm to 11:00 pm
at 72° F.
• Period 4 has a temperature setting of LOW and
runs the appliance at this setting during the night.
3
5:00pm
1
9:00am
LOW
MIDNIGHTMIDDAY
76°F
OFF
11:00pm
4
72°F
3
4:00pm
11:00am
2
10
Rinnai Corporation EX17 / EX22 Manual
Page 11
Programming the Weekly Timers
The following is a general outline of the setting options and procedures avaliable when
programming the weekly timers.
Note: Before programming the current time and day must be set.
The weekly timers can be easily programmed by following the steps illustrated below:
Press the “Timers”
button once to
1
activate the timer
programming mode.
Timers
2
Select the day or
group of days you
wish to program by
pressing the “up” and
“down” buttons:
Choose from the
following options:
Mo Tu We Th Fr Sa Su
Mo Tu We Th Fr
Sa Su
or each day of the
week in turn.
If a group of days is
chosen, the times and
temperatures selected
in steps 3 → 5 will
automatically apply
for those days.
Press the “Select”
button to confirm your
choice.
Select
3
Select the period you wish
to program by pressing
the “up” and “down”
buttons:
Periods 1 → 4 will
automatically appear in
order as you follow this
programing sequence, so
you may not need to
manually select a timer
period.
Press the “Select” button
to confirm your choice.
Select
am
Mo Tu We Th Fr Sa Su
1 2 3 4 OFF
4
Set the start time for this
period by pressing the
“up” and “down ”buttons:
The time will move up or
down in 10 minute
increments.
Each period must be set
to a later time than the
period before it.
No period can be set
past 11:50 pm, as this is
the end of the 24 hour
program.
Press the “Select”button
to confirm the time.
Select
Set
AutoManSelectClock
Frost
Override
Prog
TempR
5
Set the temperature
you want for this period
by pressing the “up”
and “down” buttons:
Choose from the
following temperature
settings:
H(high, maximum fire)
80° F →60° F
L(low, minimum fire)
- - (OFF)
If you want heat during
this period, choose a
temperature.
If you do not want heat,
choose the OFF setting.
Press the “Select” button
to confirm the
temperature setting.
Select
Repeat steps→for periods 1 through to 4 until you are satisfied with all the settings.
6
Press the “Timers“ button again to confirm your program and lock in all settings.
7
3
5
Rinnai Corporation EX17 / EX22 Manual
11
Page 12
Programming the Weekly Timers (Example)
Note: Before programing the timers, the clock must be set to the correct time.
The following is a step by step guide to programing the timers by an example schedule.
If programing is paused for longer than 2 minutes the display will return to the current time,
and all programing up to that stage will be lost.
The times and temperatures in the EXAMPLE box below can be used for learning how to set the programm-
able thermostat.
■ EXAMPLELet's use the following schedule to program the weekdays...
EXAMPLE SCHEDULE
Time SettingTemperature
1
Periods
2
3
4
5:30 am
8:00 am
5:00 pm
9:30 pm
76°F
OFF
72°F
OFF
Press the “Timers” button once. The
1
display will show “Select Program
Timer” and the “Mo Tu We Th Fr Sa Su”
indicators will flash.
Press the “▲” button once, the “Mo Tu
2
We Th Fr” indicators will flash.
Press the “Select” button once, the period □
3
indicator will flash and the time and
temperature display will be shown.
Press the “Select” button again. The
4
period □1indicator will become stable,
the temperature display will go out and
the clock will flash.
Press the “▼” button until the display
5
shows “am5:30”(as shown in the
example schedule for period □1).
Programming
Tu WeTh Fr SuMoSa
Tu WeTh FrMo
1
am
Tu WeTh FrMo
1
am
Tu WeTh FrMo
1
am
Tu WeTh FrMo
1
Set
Select
Select
Select
Select
Select
Program Timer
Program Timer
Program Timer
Program Timer
Program Timer
ClockSelect
Programming
ClockSelect
Programming
ClockSelect
Programming
ClockSelect
Programming
ClockSelect
Timers
Timers
Timers
Timers
Timers
Press the “Select” button again. The clock
6
indicator will become stable, the pre-set
temperature will flash and “Select Program
Temp” will be shown.
12
am
Tu WeTh FrMo
1
Set
Select
Temp
Rinnai Corporation EX17 / EX22 Manual
Program
Programming
ClockSelect
Timers
Page 13
Programming the Weekly Timers (Example)
Press the “▲” button to set the pre-set
7
temperature to 76°F(remember, we are
using the example schedule).
Press the “Select” button again. Now the
8
period □2indicator will flash and the time
and temperature display will be shown.
Press the “Select” button again. The
9
period □2indicator will become stable,
the temperature display will go out and
the clock indicator will flash.
Press the “▼” button until the display
10
shows “am8:00”(as in the example for
period □2).
Press the “Select” button again. The clock
11
indicator will become stable, the pre-set
temperature will flash and “Select Program
Temp” will be shown.
am
Tu WeTh FrMo
1
am
Tu WeTh FrMo
2
am
Tu WeTh FrMo
2
am
Tu WeTh FrMo
2
am
Tu WeTh FrMo
2
Set
Select
Program
Temp
Set
Select
Program Timer
Select
Program Timer
Select
Program Timer
Set
Select
Program
Temp
Programming
ClockSelect
Programming
ClockSelect
Programming
ClockSelect
Programming
ClockSelect
Programming
ClockSelect
Timers
Timers
Timers
Timers
Timers
Press the “▼” button until the
12
temperature shows “- -” and the “OFF”
indicator is displayed.
13
Set periods □3and □4following/repeating steps to , and then go to step .
Press the “Select” button again. The
14
period 1 indicator will flash and “Sa Su”
will be displayed.
15
You can now program a Weekend schedule by repeating steps to , and then go to step .
Once all timers are programed, Press the
16
“Timers” button once to save all timer
settings. The display will return to the
am
Tu WeTh FrMo
2OFF
73
am
1
pm
Mo
Set
Select
Program
Temp
14
Set
SuSa
Select
Program Timer
73
current time and the “Set Program Timer”
indicator will go out.
To review all of the programed settings go to “WEEKLY TIMER REVIEW FUNCTION”.
For a description of how to operate the heater with these programed settings, go to “OPERATING THE
TIMERS”.
Programming
ClockSelect
Programming
ClockSelect
16
Programming
ClockSelect
Timers
Timers
Timers
Rinnai Corporation EX17 / EX22 Manual
13
Page 14
Weekly Timer Review Function
This function lets you review all of the programed Weekly Timer settings(times and temperatures)
without the option of adjusting these settings, removing the danger of accidently changing the
program.
This is a quick way to review the Weekly Timer program before operating the timers.
■ To enter the Weekly Timer Review mode:
NOTE: If the heater is left in “Timer Review Mode” for longer than 10 seconds without the “ ” or “ ” buttons being
▲▼
pressed, it will exit this mode and return the previous operation.
Press and hold.
1
Press and hold the “Timers” button
for approximately 3 seconds(an
audible “beep” will be heard).
am
Mo
1
Set
Review
Programming
ClockSelect
NOTE:
The Period □1, “Mo”, time,
temperature, and “Review”
indicators will show.
2
Press the “ ▲ ” button repeatedly
to review the Weekly Timer
program.
am
Tu
1
Set
Review
Programming
ClockSelect
The four timer periods for each
day of the week will show in turn,
starting with “Mo”(Monday) then
“Tu” etc.
Timers
Timers
Press the “ ▼ ” button to go
backwards through the program.
■ To exit the Weekly Timer Review mode:
1
Press the “Timers” button.
14
pm
Tu
Rinnai Corporation EX17 / EX22 Manual
Programming
ClockSelect
Timers
Page 15
Your Weekly Timer Program
■ Points to consider before writing your program:
When do I want the heater to operate, and what temperature do I want?
When do I not want the heater to operate?
Will I use the same settings for everyday of the week, or do I need a separate program for the weekdays,
and the weekend? Do I need a separate setting for each day of the week?
■ Points to remember when writing your program:
The four periods are set within a 24 hour time span.
The start of a new period marks the end of the previous one, so each period only requires a START time.
Period 4 ends with the start of period 1 on the next day.
Each period must be set to a later time than the one before it.
If you want to heat during the period, select a temperature: H(high), 80 → 60, L(low).
If you do not want to heat during this period, select the OFF setting.
■ Write your own program:
Use the tables below to write your own weekly timer program, then program the timers.
Start TimeTemperature or OFF
1
2
3
4
1
2
3
4
Start TimeTemperature or OFF
Factory Pre-set Program
WEEK DAY
The heater comes shipped with a factory set
program(opposite).
If the heater is not set with a new program it will run
according to this program when you operate the
timers.
If the Weekly Timer program settings are erased,
the heater will revert to this program.
Start TimeTemp or OFF
1
2
3
4
WEEK END
Start Time
1
2
3
4
6:00 am
8:30 am
5:00 pm
11:30 pm
7:00 am
12:00 pm
5:00 pm
11:30 pm
72°F
64°F
74°F
64°F
Temp or OFF
72°F
70°F
74°F
64°F
Rinnai Corporation EX17 / EX22 Manual
15
Page 16
Operating the Timers
■ Before operating the timers, please check the following points:
The clock must be set to the current time and day.
If no personal program is entered, the heater will operate according to the the default factory settings.
■ Follow the steps below to operate the timers:
1
2
3
Press the “ON/OFF” button. The
“Man”(Manual) and “ON” indicators
will come on as well as the preset
pm
Tu
Set Room
Man
ON
Override
EcoFrost
AutoON/OFF
and room temperatures.
Press the “Auto” button. The “Man”(Manual) indicator will be replaced by the “Auto”(Automatic) indicator,
and the current timer period will show.
4 OFF
Set Room
Set Room
AutoON
AutoON
Override
EcoFrost
AutoON/OFF
If the current period has been
programed with a temperature,
the heater will start heating.
If the current period has been
programed with an OFF setting
the heater will not heat during
pm
Tu
3
pm
Tu
this period.
The heater will now operate according to the four periods programed into the Weekly Timer.
Returning to Manual Mode
1
Press the “Auto” button. The “Auto”
indicator will go out and be replaced
by the “Man”(Manual) indicator.
The heater will now heat depending
on your manual settings.
16
pm
Tu
Set Room
Man
Rinnai Corporation EX17 / EX22 Manual
ON
Override
EcoFrost
AutoON/OFF
Page 17
Override Function
■ This function is used when the heater is in “Auto” mode(timer operation).
■ It allows you to “Override” the preset timer setting until the beginning of the next period.
For example, if the heater is ON, pressing the “Override” button will turn it OFF until the next priod. If the
heater is OFF, pressing the “Override” button will turn the heater ON, and allow you to select a
temperature, until the next period.
■ To turn on the Override function:
Remember: The Override function is for use in the “Auto”(timer) mode only.
1
2
Press the “Override” button.
Override
One of the following will happen depending on the current timer period setting:
If the current timer
period is ON (heating)
The heater will turn OFF, the
temperatures will display “-”, and the
“Override” and “Off” indicators will light.
or
The heater will turn ON, the manual
pre-set temperature and room
temperature will show , and the
If the current timer
“Override” and “On” indicators will light.
pm
Tu
3
Set Room
The heater will remain OFF until
AutoON
OverrideOff
pm
Tu
3OFF
Press the “ ▲ ” or “ ▼ ” buttons to manually
adjust the pre-set room temperature.
a. the next timer period, or
b. the Override function turned off
manually(see step below).
period is OFF
Set Room
AutoON
Override On
■ To turn off the Override function:
1
Press the “Override” button.
Then the heater will return to the operation of the current timer period.
Rinnai Corporation EX17 / EX22 Manual
The heater will remain heating until
a. the next timer period, or
b. the Override function turned off
manually (see step below).
17
Page 18
Frost Protection
■ This function allows a minimum room temperature to be pre-set, between 38°F and 60°F. Once the
Frost Protection function is selected the appliance will start heating whenever the room
temperature falls below the selected temperature, regardless of timer or manual settings.
The default position is ON. If the power is lost, when it returns, the appliance will turn on due to the frost
protection function.
■ Follow the steps below to set and operate the Frost Protection:
1
2
3
Make sure the heater is turned OFF.
Press the “Frost” button. The
Frost Protection temperature
and the “Frost” indicator will be
displayed.
Press the “ ▲ ” and “ ▼ ”
buttons to select the Frost
Protection temperature.
pm
Tu
pm
Tu
Set
Set
Frost
Frost
Override
ClockTimerSelect
EcoFrost
AutoON/OFF
Programming
(Between 38°F and 60°F).
When the “Frost” indicator is displayed the Frost Protection is operating, and will always prevent the
room temperature from falling below the pre-set Frost Protection temperature.
■ To turn off the Frost Protection:
Press the “Frost” button. The
1
“Frost” indicator will go out.
18
pm
Tu
Rinnai Corporation EX17 / EX22 Manual
Override
EcoFrost
AutoON/OFF
Page 19
Energy Saving Mode
■ The Economy mode can only be set while the heater is operating (heating), but once set it will
remain in the system memory until deactivated.
■ To turn on the Economy mode:
Note: The Economy Mode may only be set while the heater is operating(heating).
1
Press the “Eco” button. The
“Economy Mode” indicator will
light.
pm
Tu
Set Room
Economy Mode
Man
ON
Override
EcoFrost
AutoON/OFF
The Economy Mode now remains in the system memory.
If the appliance is turned off manually, or stops heating as a result of an OFF timer period, the “Economy
Mode” indicator will go out.
Whenever the appliance starts heating again, the “Economy Mode” indicator will light.
■ To turn off the Economy Mode:
Note: The Economy Mode can only be turned off while the heater is operating(heating), i.e when the “Economy
Mode” indicator is showing.
1
Press the “Eco” button. The
“Economy Mode” indicator will
go out.
pm
Tu
Set Room
Man
ON
Override
EcoFrost
AutoON/OFF
■ Economy Mode: Information
Aft e r t he r oom is h eated init ially the air
temperature may be dropped to a lower level
without affecting comfort. 30 minutes after the
selected room temperature (set manually with
the “ ▲ ” and “ ▼ ” buttons or in an On timer
period) is reached, the Economy Mode, if set,
reduces the temperature by 2°F. After another
30 minutes it reduces the temperature by a
further 2°F, effectively saving energy.
The Economy Mode will not operate if the
heater is under capacity for the room size.
Rinnai Corporation EX17 / EX22 Manual
Preset Temperature
30 min
2°F reduction
2°F reduction
30 min
19
Page 20
Function Lock
■ The Function Lock will help to prevent accidental operation of the appliance as well as children from
altering the controls.
■ To activate the Function Lock:
1
Press the “ ▲ ” and “ ▼ ” buttons
at the same time. The “Function
Lock” indicator will light.
■ To deactivate the Function Lock:
1
Press the “ ▲ ” and “ ▼ ” buttons
at the same time for approx 2
seconds until a “beep” is heard.
The “Function Lock” indicator will
go out.
NOTE:
The lock can be activated when the heater is ON or OFF.
pm
Tu
pm
Tu
Set Room
Function Lock
Set Room
Man
Man
At the same time for 2 seconds
ON
At the same time
ON
Programming
ClockSelect
Programming
ClockSelect
Timers
Timers
If activated while the heater is ON, all controls other than the OFF switch will be locked.
If activated while the heater is OFF, then all controls will be locked.
If the heater is turned off while the Function Lock is activated, it cannot be turned on again until the lock
is deactivated.
Deactivating the lock releases the controls.
20
Rinnai Corporation EX17 / EX22 Manual
Page 21
Humidifier and Air Flow Direction
Adding Water to the Humidifier
CAUTION
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.
trim panel or the humidifier
tray while warm air is
flowing.
mottob eht evomer ton oD
Adjusting Air Flow Direction
CAUTION
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.
louvers while warm air is
flowing.
wolf ria eht tsujda ton oD
Rinnai Corporation EX17 / EX22 Manual
21
Page 22
Care and Maintenance
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.
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.
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.
Verify proper operation after servicing.
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.
CAUTION
Prevent dust from
accumulating on the power
cord, side covers, and parts
behind the appliance.
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
Flame Rod
Yellow flames or
orange color
22
Rinnai Corporation EX17 / EX22 Manual
Page 23
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.
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?
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.
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.
Rinnai Corporation EX17 / EX22 Manual
23
Page 24
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.
CODE DISPLAYED FAULTREMEDY
31
32
33
34
Room Temperature Sensor
Faulty
Overheat Temperature Sensor
Faulty
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.
Check that gas is turned ON.
Check that the vent termination is not
eruliaF noitingI 11
Refer to the Restart Function explanation.
Service call if repeated.
taehrevO 41
taehrevO mooR 61
Lower room temperature to less than 104°F
Service call if repeated. [1]
blocked.
Clean filter.
(40°C).
Service call.
Service call.
.llac ecivreS nwodkaerB rosneS 94
.llac ecivreS eruliaF rekrapS 35
61 Combustion Fan Failure Service call.
70 Faulty ON/OFF Switch Service call.
.llac ecivreS sdioneloS ytluaF 17
doR emalF ytluaF 27
73 Communication Error
kcolB eulF 99
[1] 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.
[2] 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.
Check around the flue terminal for blockage.
[2]
.llac ecivreS
.llac ecivreS
24
Rinnai Corporation EX17 / EX22 Manual
Page 25
Restart Function
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.
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.
No ON indicator
Burner doesn’t ignite
Unusual combustion
during operation
Combustion stops
Smell of gas
Takes too long to
Noisy ignition
warm the room
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
Rinnai Corporation EX17 / EX22 Manual
25
Page 26
Installation Instructions
General Instructions
WARNING
Do not use substitute materials.
Use only parts certified with the appliance.
• 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.
• 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.
• 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.
26
NOTICE
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.
Rinnai Corporation EX17 / EX22 Manual
Page 27
Gas Connection
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.
• 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.
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"
Engage Lugs
Rinnai Corporation EX17 / EX22 Manual
Secure With
Screws
27
Page 28
Flue Terminal Clearances
X
applies to
Ref. A also
anticipated
snow line
SNOW
Clearance in
TERMINATION
K
M
I
AIR SUPPLY INLET
H
VENT TERMINAL
PERMITTTED
AREA WHERE
TERMINAL IS NOT
V
B
FIXED
CLOSED
OPERABLE
J
A
B
24(600mm)
Non
Flammable
Flammable
Wall
CORNER DE TAIL
INSIDE
(250mm)
10
G
Opposite
(500mm)
20
24
(600mm)
B
A
Floor
Wall
E
B
CLOSED
FIXED
OPERABLE
C
B
L
B
F
STANDARD INSTALLATION OF FLUE MANIFOLD.
Diagram below shows minimum clearances and
distances from obstructions.
Also check local regulations.
28
D
Rinnai Corporation EX17 / EX22 Manual
Page 29
Flue Terminal Clearances
driveway that is located
A vent shall not
terminate directly above
between two single
a sidewalk or paved
family dwellings and
serves both dwellings.
or balcony is fully open
Permitted only if
on a minimum of two
veranda, porch, deck,
sides beneath the floor.
∗ For clearances not
specified in ANSI
Z223.1/NFPA 54 or
CSA B149.1,
installation codes and
clearances are in
accordance with local
the requirements of the
gas supplier.
)mc 05( sehcni 02 )mc 05( sehcni 02 renroc edisni ot ecnaraelC G
10,000 BTUh;
9 inches (23 cm) for
6 inches (15 cm) for
appliances > 10,000 BTUh
appliances <
10,000 BTUh;
6 inches (15 cm) for
Canadian Installations US Installations
9 inches (23 cm) for
appliances > 10,000 BTUh
appliances <
* * w
50,000 BTUh,
and <
12 inches (30 cm) for
appliances > 50,000 BTUh
50,000 BTUh,
and <
12 inches (30 cm) for
12 inches (30 cm) 9 inches (23 cm)
appliances > 50,000 BTUh
odni
w des
* *
* * ti
* *
*
assembly
the meter/regulator
3 feet (91 cm) within a
height 15 feet (4.5 m) above
12 inches (30 cm) 9 inches (23 cm)
horizontally
within 10 feet (3 m)
3 feet (91 cm) above if
6 feet (1.83 m)
7 feet (2.13 m) *
flammables
12 inches (30 cm) to non-
flammables
12 inches (30 cm) to non-
flammables
24 inches (60 cm) to
flammables
24 inches (60 cm) to
ol
c yltnena
Description
or balcony. (Take into account the anticipated
snow line)
Clearance above grade, veranda, porch, deck,
Ref
A
Clearance to window or door that may be
opened
B
m
rep
o
t ecnaraelC C
Rinnai Corporation EX17 / EX22 Manual
f
f
o
r
s d
enroc e
e
t
al
i
t
nevnu ot ecna
di
stuo
ot ecnaraelC
r
aelC E
Clearance to nonmechanical air supply inlet to
2 feet (61 cm) from the center line of the terminal
Vertical clearance to ventilated soffit, located
above the terminal within a horizontal distance of
D
F
Clearance to each side of center line extended
above meter/regulator assembly
H
I Clearance to service regulator vent outlet 3 feet (91 cm) *
building or the combustion air inlet to any other
J
Clearance to a mechanical air supply inlet
appliance
K
driveway located on public property
Clearance above paved sidewalk or paved
L
Clearance under veranda, porch, deck, or
balcony
M
29
Page 30
Dimensions
11 " (280mm)
2 3/5"(66mm)
21 13/16" (554mm)
19 15/16" (506mm)
8 7/16"(214mm)
Exhaust at rear of unit
(R25
R9
1mm)
.
9"
3 7/16" (88mm)
R10.6"
(R270mm)
R8.0"
06mm)
(R2
8 9/16"
(217mm)
29 1/2" (750mm)
9 5/8"
(245mm)
17 16/25"(448mm)
1"
(25mm)
Power supply cable
6 1/2" (165mm)
3 3/8" (85mm)
30
Rinnai Corporation EX17 / EX22 Manual
Page 31
Installation Parts
The following items are included with the appliance:
Flue ManifoldSlaes rebbur erap11
“A” Vent Kit, FOT-151
(‘A’ Flue units only)
(For weatherboard installations)
Back Spacer
Set
Air Filter
Screw
(M4)
Owner’s Manual
Conversion Manual
Conversion Kit
Template
For Back Spacer Set
Pipe Stopper A
Pipe Stopper B
1
Manual Valve
Set
Plastic tie
for air inlet
1
Plastic tie
(L=250mm)
1
6
(M4
Ring
Screw
×20)
Screw
(M4)
1
1
1
1
1
1
1
For Flue Pipe Stopper B
3
For Flue Manifold
Screw
(M4)
Wall BracketSpacer Bracket11
For Air Intake Clip
The following flue manifold sizes are
available for different wall thicknesses:
Rinnai Corporation EX17 / EX22 Manual
Wood Screws
2
(M4.8×32)
Wall Bracket Screws
5
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)
31
Page 32
Drilling Flue Hole
NOTICE
Use a template (included) to
determine allowable location of the
flue hole
For installation without using extension kits, the configuration of the flue manifold, air intake hose, and
exhaust slide pipe should be as shown when installation 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.
NOTICE
Do not cut the intake hose. Cutting
the intake hose may result in noise.
Flue Hole
3 1/8"
(80 mm)
32
Rinnai Corporation EX17 / EX22 Manual
Page 33
Flue Manifold Installation
• The flue manifold must exhaust to the outside. Do
not exhaust into other rooms.
• The flue manifold is not designed to be positioned
under floors or below the heater.
• The termination cannot be vertical.
1. Disassemble the flue manifold
The flue consists of 3 parts:
• sleeve
• inside connection
• outside terminal
Disassemble the flue manifold by first pulling
out the inside connection. To remove the
outer terminal pull and release the two
internal ties and then pull out the outer
terminal.
Clearance to combustibles for the sleeve and
flanges is zero inches.
2. Adjust the sleeve length
• This appliance can only be used with one of the
five types of Rinnai flue kits. The flue kits and their
dimensions are listed on the previous page.
• Refer to the Flue Terminal Clearances section.
Inside Connection
Sleeve
Terminal
Measure wall thickness through previously
drilled 3 1/8 inch (80 mm) hole.
The end of the sleeve should protrude 3/16 3/8 inch (5-10 mm) from the outside wall.
The sleeve is threaded for adjustment. Adjust
the sleeve length to wall thickness plus 3/16 3/8 inch (5-10 mm).
NOTE: Do not extend beyond the red line.
For other than the “S” type flue manifold, if a
shorter length is necessary an extension can
be removed. Cut the plastic and remove the
extension.
3. Attach the sleeve
Attach to the inside wall using 3 screws
arranging the flange so that the marking
“TOP” is at the top.
The flange is offset 2° to allow the
condensate drain to the outside.
3 screws
Remove extension
if necessary
sleeve should extend
3/16 - 3/8 in (5-10 mm)
Rinnai Corporation EX17 / EX22 Manual
33
Page 34
Flue Manifold Installation
4. Install the Terminal
Check that the terminal seal is in place. For
weatherboard walls, add the second seal next
to the terminal seal to compensate for
weather board angle.
From the outside insert the terminal into the
sleeve with the marking “TOP” at the top.
The left hand side locking tie should be
marked “LEFT”.
5. Lock the ties
Pulling hard on the left and right hand ties,
clip the ties over the notches inside the
sleeve. You should be able to pull the ties 2
or 3 notches past the starting point. Cut the
ties, leaving about 3/4 inch (20 mm) past the
notch. Bend the ties back into the sleeve and
parallel to the wall.
Terminal seal
Terminal
Locking tie
Locking ties
Sleeve
6. Insert Inside Connection Assembly
Push the assembly into the terminal tube,
ensuring that the seal is in place on the
inner tube.
Attach the inside connection with 3
screws. The inner connection can still
be turned to install the screws.
3 screws
34
Rinnai Corporation EX17 / EX22 Manual
Page 35
Extension Kit Installation
CAUTION
Secure the air intake hose and exhaust pipe with Pipe clamp B at intervals to
prevent contact between the air intake hose and the exhaust pipe.
If necessary, extension kits are available to extend the
exhaust line and air intake hose between the manifold
and the appliance.
(1) Maximum vent length allowed is 13 feet (4 m).
(2) Maximum vertical length allowed is 10 feet (3.0 m).
(3) Any length (horizontal and vertical) in excess of 10
feet (3.0 m) must be sloped 3° downward toward
the flue manifold to allow condensate to drain to
the outside.
(4) Do not allow any low points in the exhaust line
where condensate will collect.
These figures show the 3 possible ways that the extension exhaust line and air intake hose may be directed away from the appliance. All 3 views are from
behind the appliance.
For your configuration, position the air intake hose
as shown.
Horizontal extension on left side
(5) Vent extensions installed in unconditioned air
space must be insulated with high temperature
insulation and must be accessible.
(6) Vent extensions must not be concealed per NFPA
54 and must be accessible allowing inspection and
repair. Decorative covers are available from
Rinnai.
Plastic tie
right side no noisnetxe lacitreVleft side no noisnetxe lacitreV
Rinnai Corporation EX17 / EX22 Manual
Plastic tie
35
Page 36
ExtensionInstallationKit
CAUTIONS
INCORRECT
Too many bends (limit is 2)
Air intake hose is above exhaust pipe.
Condensed water
may accumulate
here, and cause a blockage
preventing combustion.
CAUTION
Never allow the exhaust pipe
to sag, as condensed water
may accumulate and cause
incomplete combustion.
Condensed water formed by
combustion, will run back to the
unit, and may overflow from the
condensation pan if pipes are
longer than 10 feet. Therefore, pipes
exceeding these lengths should be
made to drain to the outside by
giving their horizontal portions 3˚ or
more downward and outward slope.
3˚ slope(approximate)
Less than 10 ft.
36
Rinnai Corporation EX17 / EX22 Manual
Page 37
Extension Kit Installation
CAUTION
Clearances
Use the pipe stoppers, connectors, clamps, and screws according to these instructions in
order to ensure no leakage of exhaust gases.
exhaust pipe to combustibles 1 inch (25.4 mm)
exhaust pipe to non-combustibles zero
Clamps
Both the exhaust line and air intake hose are
supported by clamps which are attached to the wall.
A wall fixture can be used to offset the clamp from the
wall. Use Screw B to attach the wall fixture to the
wall. If the wall fixture is not used then use Screw A
and the nut to attach the clamp to the wall.
The air intake hose should always be underneath the
exhaust line so that in case the air intake hose sags it
will not come into contact with the exhaust line.
Installing the Exhaust Line
The exhaust line is connected between the bent pipe
at the rear of the heater and the exhaust port on the
flue manifold.
Air intake hose
Male end
Exhaust pipe
Female end
Exhaust pipe
Air intake hose
Pipe stopper B
To connect exhaust pipes with other straight pipes or
bends, fit the male end into the female end. Use pipe
stopper A to clamp the connection.
Use pipe stopper B to fix the length on the adjustable
exhaust pipes. Do not extend these pipes beyond the
red line.
Do not cut the exhaust pipe. Use the adjustable
pipes if necessary.
To bend the elbow, insert exhaust pipes into both
ends for additional leverage. Bend to desired angle.
Do not straighten the bent pipe attached to the
appliance.
Connecting the Air Intake Hose
The air intake hose is connected between the air
connection at the rear of the heater and the air intake
port on the flue manifold.
Push the air intake hose onto the flue manifold and
secure with the plastic tie for air inlet.
Join air intake hoses by screwing the hose joint half of
its length into the air intake hose and then screwing
another air intake hose into the hose joint.
Pipe stopper A
Adjust the angle
The lengths of the air intake hose and the exhaust
pipe must be the same in order for the appliance to
operate properly. The hose can be cut to the required
length. Deburr all rough edges. Do not cut the hose
attached to the appliance.
1. Attach the air intake hose to the flue manifold on
either inlet position “a” or “b”, and secure with the
plastic tie for air inlet as shown.
The unused inlet is plugged with the rubber cap
supplied on the manifold.
When servicing unit replace plastic tie for air inlet
with new one. (Available at local hardware store
or contact local distributor.)
2. Connect the flue outlet to the manifold by
extending the stainless steel sliding tube until it is
fully inserted into the flue manifold.
3. Fit the pipe stopper A over the connection between
the sliding tube and flue manifold. Engage the
hook and rotate it until it snaps against the body
of the clamp.
4. Fit the pipe stopper B between the sliding tube and
the flue sliding tube. Secure with the 4mm screws
supplied. The flue sliding tube is now locked into
position.
Slide the insulation cover up to the flue manifold
and slip the securing ring over the cover as
shown.
Plastic tie for air inlet
Pipe stopper A
Flue Manifold
Pipe stopper B
Flue sliding tube
Screw
Sliding tube
a
Sliding Tube
Slide
Do not extend flue tube
beyond red line.
Sliding tube
Pipe stopper A
Flue Manifold
b
Flue Manifold
Hook
Pipe stopper A
Slide insulation Cover
Cover
Air inlet elbow
Fit Ring
Slide to here
5. Install the bracket on the rear of the top spacer by
tightening 2 screws.
6. Install the wall bracket with two screws. Install
the top spacer by clipping the spacer into the wall
brackets and attaching it to the heater with 2
screws.
Up to 10 mm
Adjustable Leg
If necessary, the unit can be leveled using the
adjustable legs under the front right and left hand
side legs.
Rinnai Corporation EX17 / EX22 Manual
39
Page 40
Operating Instructions
FOR YOUR SAFETY READ BEFORE OPERATING
WARNING
A. This appliance does not have a pilot. It is
equipped with an ignition device which
automatically lights the burner. Do not
light the burner by hand.
B. 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.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric 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.
may result causing property damage, personal injury or loss of life.
try to
OPERATING INSTRUCTIONS
1. STOP! Read the safety information above.
2. Set the thermostat to lowest setting.
3. Turn off all electric power to the appliance
using the ON/OFF button.
4. This appliance is equipped with an ignition
device which automatically lights the burner.
Do not
5. Locate the manual gas valve on the side of
the heater. Turn the manual valve
clockwise to the full OFF position.
try to light the burner by hand.
Manual Valve
CLOSE
OPEN
oitcurtsni eseht wollof ton od uoy fI ns exactly, a fire or explosion
• If you cannot reach your gas supplier, call
the fire department.
C. 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 qualified service technician.
Force or attempted repair may result in a fire
or explosion.
D. 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.
6. Wait five (5) minutes to clear out any gas.
Then smell for gas, including near the floor. If
you smell gas, STOP! Follow “B” in the safety
information above. If you don’t smell gas, go
to the next step.
7. Turn the manual gas valve counterclockwise
to the full ON position.
8. Turn on all electric power to the
appliance using the ON/OFF button.
9. Set the thermostat to desired setting.
10. Combustion indicator “ ” is displayed when the
burner is lit and is not displayed when the burner fails
to ignite. If the appliance will not operate,
follow the instructions “To Turn Off Gas To
Appliance” and call your service technician or
gas supplier. See manual for additional
information.
TO TURN OFF GAS TO APPLIANCE
1. Set the thermostat to lowest setting.
2. Turn off all electric power to the appliance
using the ON/OFF button.
3. Locate the manual gas valve on the side of
the heater. Turn the manual valve
clockwise to the full OFF position.
40
NOTE: The fan will continue to operate until the
appliance is cool. Do not turn the
appliance off by unplugging it from the
wall. Keep burner and control
compartment clean. See installation and
operating instructions.
Rinnai Corporation EX17 / EX22 Manual
Page 41
Cut-Away Diagram
Rinnai Corporation EX17 / EX22 Manual
41
Page 42
Wiring Diagram
CAUTION
Label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation.
If any of the original wire as supplied with the
appliance must be replaced, it must be replaced with
type 18 AWG wire or its equivalent.
42
Rinnai Corporation EX17 / EX22 Manual
Page 43
Ladder Diagram
Rinnai Corporation EX17 / EX22 Manual
43
Page 44
Flow Diagram
THERMISTOR
44
Rinnai Corporation EX17 / EX22 Manual
Page 45
Parts List
For replacement parts call Rinnai at 1-800-621-9419.
Rinnai Corporation EX17 / EX22 Manual
45
Page 46
Parts List
46
Rinnai Corporation EX17 / EX22 Manual
Page 47
Parts List
For replacement parts call Rinnai at 1-800-621-9419.
Rinnai Corporation EX17 / EX22 Manual
47
Page 48
Parts List
48
Rinnai Corporation EX17 / EX22 Manual
Page 49
Parts List
For replacement parts call Rinnai at 1-800-621-9419.
Rinnai Corporation EX17 / EX22 Manual
49
Page 50
Parts List
ITEMPART NUMBERPART NAME
001REAR PANEL ASS'Y556F-311-9111
002TOP PLATE SUPPORTER 556F-480111
003TOP PLATE 556F-469-211
003TOP PLATE 556F-469-51
004DECORATING FRONT PANEL556F-467-211
004DECORATING FRONT PANEL556F-467-51
005DECORATING FRONT PANEL (R)556F-475-211
005DECORATING FRONT PANEL (R)556F-475-31
006DECORATING FRONT PANEL (L)556F-476B-121
006DECORATING FRONT PANEL (L)556F-476B-131
006DECORATING FRONT PANEL (L)556F-476C-71
007CONTROL P.C.B ASS'Y556F-1100-111
007CONTROL P.C.B ASS'Y556F-1100-21
008SIDE PANEL (R)556F-456-2-B11
008SIDE PANEL (R)556F-456-2-E1
009SIDE PANEL (L)556F-456-1-B11
009SIDE PANEL (L)556F-456-1-E1
010AIR FILTER SUPPORTER556F-312111
911OWNER'S MANUALR558F-1050111
912CONVERSION MANUALR558F-1051111
913TEMPLATE556F-2086111
914CONVERSION KIT556F-2085-111LP to NG
914CONVERSION KIT556F-2085-211NG to LP
914CONVERSION KIT556F-2085-31LP to NG
914CONVERSION KIT556F-2085-41NG to LP
EX22EX17EX22W
QTY
REMARKS
Rinnai Corporation EX17 / EX22 Manual
53
Page 54
Consumer Support
Warranty Information
The installer is responsible for your heater’s correct installation.
Please complete the information below to keep for your records:
Date of Installation: __________________________________
Limited Warranty
Gas Direct Vent Wall Furnace
What is covered?
This Warranty covers any defects in materials or workmanship, subject to the terms stated below. This Warranty extends to
the original purchaser and subsequent transferees, but only while the product remains at the site of the original installation.
This Warranty only extends through the first installation of the product and terminates if the product is moved or reinstalled at a
new location.
How long does coverage last?
egarevoC fo doireP metI
* esahcrup fo etad morf sraey 01 regnahcxE taeH
esahcrup fo etad morf sraey 5 straP rehtO llA
esahcrup fo etad morf sraey 2 robaL elbanosaeR
What will Rinnai do?
Rinnai will repair or replace the covered product or any part or component that is defective in materials or workmanship as set
forth. Rinnai will pay reasonable labor charges associated with the repair or replacement of any such part or component. All
repair parts must be genuine Rinnai parts. All repairs or replacements must be performed by an individual or servicing
company that is properly trained, state qualified or licensed to do the type of repair.
54
Rinnai Corporation EX17 / EX22 Manual
Page 55
Limited Warranty - continued
Replacement of the product may be authorized by Rinnai
only. Rinnai does not authorize any person or company to
assume for it any obligation or liability in connection with the
replacement of the product. If Rinnai determines that repair
of a product is not possible, Rinnai will replace the product
with a comparable product at Rinnai’s discretion. If a
component or product returned to Rinnai is found to be free
of defects in material or workmanship, or damaged by
improper installation or damaged during return shipping, the
warranty claim for product, parts and labor may be denied.
* If the Heat Exchanger fails due to a defect in material or
workmanship within the sixth (6) through the tenth (10)
year from the date of purchase, Rinnai will make the
following allowances toward the purchase of a
replacement Heat Exchanger:
How do I get service?
You must contact a state qualified/licensed contractor or authorized service provider for the repair of a product under this
Warranty. For the name of a qualified/authorized service provider please contact your place of purchase, visit the Rinnai
website (www.rinnai.us
30269.
Proof of purchase is required to obtain warranty service. You may show proof of purchase with a dated sales receipt, or by
registering within 30 days of purchasing the product. To register your appliance, please visit www.rinnairegistration.com
those without internet access, please call 1-866-RINNAI1 (745-6241). Receipt of Registration by Rinnai will constitute proof-ofpurchase for this product. However, Registration is not necessary in order to validate this Warranty.
What is not covered?
This Warranty does not cover any failures or operating difficulties due to the following:
), call Rinnai at 1-800-621-9419 or write to Rinnai at 103 International Drive, Peachtree City, Georgia
Year of Failure Allowance
Heat Exchanger
7
%05 6
%04
%03 8
%02 9
%01 01
. For
• accident, abuse, or misuse
• alteration
misapplication
•
• force majeure
• improper installation (such as but not limited to, condensate damage, improper venting, incorrect gas type, or incorrect gas
pressure)
• improper conversion (including conversions for inventory adjustment)
• improper maintenance (such as but not limited to vent blockage)
• incorrect sizing
• any other causes other than defects in materials or workmanship
This Warranty does not apply to any product whose serial number or manufacture date has been defaced.
Limitation on warranties
No one is authorized to make any other warranties on behalf of Rinnai America Corporation. Except as expressly provided
herein, there are no other
for a particular purpose, which extend beyond the description of the warranty herein and further Rinnai shall not be liable for
indirect, incidental, special, consequential or other similar damages that may arise, including lost profits, damage to person or
property, loss of use, inconvenience, or liability arising from improper installation, service or use. Some states do not allow the
exclusion or limitation of incidental or consequential damages, so the above limitation may not apply to you.
Any implied warranties of merchantability and fitness arising under state law are limited in duration to the period of coverage
provided by this limited Warranty, unless the period provided by state law is less. Some states do not allow limitations on how
long an implied Warranty lasts, so the above limitation may not apply to you.
This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
warranties, expressed or implied, including, but not limited to warranties of merchantability or fitness
Rinnai Corporation EX17 / EX22 Manual
55
Page 56
Tankless Water Heaters
• Residential and Commercial Applications
• Continuous Hot Water
• Up to 9.8 GPM
• High Energy Efficiency
• Propane or Natural Gas
• Internal or External Installation
• Digital Temperature Control
• Small, Compact Design
Direct Vent Furnaces
• High Efficiency
• Cool-to-the-touch Cabinet
• Blower Included
• Vent Terminal A Included
• Gas Conversion Kit Included
Rinnai America Corporation
103 International Drive
Peachtree City, GA 30269
TOLL FREE: 1-800-621-9419
www.rinnai.us
Register your product at www.rinnairegistration.com
or call 1-866-RINNAI1 (746-6241)