Rinnai RS100 Troubleshooting guide

www.rinnai.us • © 2009 Rinnai America Corporation
Condensing Boiler
RS100 Controller Training Program
Training Program #501102A –
062311

www.rinnai.us • © 2009 Rinnai America Corporation 2
Features and Benefits
•Direct communication with the boiler allows it to fire based on the area’s immediate needs
•Operation is controlled by simple rotary push button technology
•Digital display (with backlight):
•Fahrenheit or Celsius
•Ability to display outdoor temperature
•Ability to display supply temperature
•Ability to display system pressure
•Indication of operating capacity (% of Btu)
•Error and warning reporting
•Multiple programming options
•Vacation program
•Three event programs per day
•Three weekly programs
•Summer setback economy mode
•Anti-Legionella programming available for domestic hot water
•Two-wire connection—no battery needed for power
•Integrated battery for memory saves settings during power outage
•Battery will last five years in off mode—it is not used when powered
RS100 –Programmable Wall Thermostat with room setback
•The RS100 connects directly to the boiler and acts as a central thermostat for the entire structure

www.rinnai.us • © 2009 Rinnai America Corporation 3
Applications for the RS100 Room controller
The RS100 is a room controller and not an on/off room thermostat. It is intended to work only
with Rinnai boilers. When used in conjunction with a Rinnai boiler it will sense the room
temperature and use it to influence the supply water temperature. This will allow less cycling of
the boiler and a more efficient installation. The RS100 is designed to control a single circuit of
heating.
There are two basic applications for the RS100:
•In single zone systems, as a remote boiler display with influence from the room or area where the controller
is installed
•This can be done with only room influence and no outdoor reset influence
•Since the RS100 is constantly reporting room conditions to the boiler, the boiler can still modulate
effectively—constant outdoor temperature reporting is not needed for normal operation (it is still beneficial
for freeze protection)
•The RS100 should be installed in the coldest room
•In multiple zone systems, as a remote boiler display only with no room influence from the controller
•This can be done with or without the room temperature displayed
•This would be considered a 100% outdoor reset boiler where the pump runs continuously and the load is
based solely on the outside temperature
•The RS100 can be installed in any room in this application
Scope of Use

www.rinnai.us • © 2009 Rinnai America Corporation 4
Scope of Use-
Single Zone System (RC mode)
The RS100 can be used to
control a single heating zone
system. A single heating zone
system has only one loop of
heating. The placement of
the RS100 is very important;
it must be placed in the
coldest room within the single
zone system. If the RS100 is
not placed in the coldest room
there is a chance that the
room will not receive enough
heat and therefore not be
comfortable. The RS100
needs no additional installer
level programming to work for
this installation.

www.rinnai.us • © 2009 Rinnai America Corporation 5
Scope of Use-
Multiple Zone System (Outdoor Reset mode)
Zone
Thermostats
Third
Party
Controller
Outdoor
Sensor Zone Valve Piping
In this application, the RS100 will allow
the boiler to switch between day and
night outdoor reset curves. The boiler is
then operating with constant circulation
and no input from room thermostats
(on/off) or third party controls. In this
application, a third party relay panel
should be used to control pumps or
zone valves. The panel cannot be
connected to the boiler with an RS100
also connected. Boiler thermostat
terminals 22 and 23 are inactive when
the RS100 is connected.
If multiple zones are used, it is
likely not beneficial to have a
single zone controlling the
boiler’s demand. The RS100
can be used where its room
information does not influence
the boiler’s demand. Its clock
functions are still active as
well as the ability to adjust a
theoretical temperature for
comfort.

www.rinnai.us • © 2009 Rinnai America Corporation 6
Zone
Thermostats
Third
Party
Controller
Outdoor
Sensor Zone Pump Piping
The boiler in this application is
operating with constant
circulation and no input from
room thermostats (on/off) or third
party controls. The third party
control panel cannot be
connected to the boiler with an
RS100 also connected. Boiler
thermostat terminals 22 and 23
are inactive when the RS100 is
connected.
Scope of Use-
Multiple Zone System (Outdoor Reset mode)

www.rinnai.us • © 2009 Rinnai America Corporation 7
INSTALLATION
BASICS
THIS IS AN OVERVIEW ONLY—PLEASE REFER TO EACH BOILER OR CONTROLLER
INSTALLATION MANUAL THAT IS SHIPPED WITH THE PRODUCT FOR THE MOST UP TO DATE
INFORMATION. CONTACT RINNAI TECHNICAL SUPPORT IF NEEDED

www.rinnai.us • © 2009 Rinnai America Corporation 8
Electrical Connections
Below is the connection for the RS100. Please refer to the installation manual and Rinnai’s recommended
application guide for more details or contact Rinnai’s Engineering Department as needed
The RS100 will connect to terminals 20 and 21
•Controller wire should be no longer than 164 ft
•Controller wire should be 18 (AWG) Gauge
•Controller wire should be shielded if near high
voltage (120 V or higher) or if a long distance-the
ground should be connected at the boiler (not at
the controller)
•Mount the controller in the coldest area of the
structure
•Do not mount in direct sun
•Do not mount too close to a heat emitter (where
the emitter could falsely influence the controller)
•Do not mount near lighting that could falsely
influence the controller
Outdoor reset sensor (included with boiler)
connects here. When power is first applied
to the boiler, if the outdoor reset sensor is
not connected, the boiler will not incorporate
any outdoor temperature monitoring
On/Off room
thermostat or
control (no
voltage, dry
contact),
jumping these
points will
cause the
boiler to fire if
there is no
RS100
connected. If
an RS100 is
connected at
terminals 20
and 21, the
boiler will
ignore these
terminals.
Connect the wires to
the back panel of the
controller. Ensure
wire ―A‖ from the
controller is
connected to
terminal 20 (wire
―A‖) on the Boiler.
Ensure wire ―B‖ is
connected to 21.
Release the tab at
the bottom of the
controller to
access the
connection points
Note: If these are swapped the RS100 will
not exit ―Auto Set‖ upon booting.

www.rinnai.us • © 2009 Rinnai America Corporation 9
BASIC
OPERATION
THIS IS AN OVERVIEW ONLY—PLEASE REFER TO EACH BOILER OR CONTROLLER
INSTALLATION MANUAL THAT IS SHIPPED WITH THE PRODUCT FOR THE MOST UP TO DATE
INFORMATION. CONTACT RINNAI TECHNICAL SUPPORT IF NEEDED

www.rinnai.us • © 2009 Rinnai America Corporation 10
RS100 Power-on Initialization
The following sequence will occur every time power is reset or the “reset” button on the boiler is pressed
This process takes about 30 seconds
RS100 –Display during initialization
A display test
will occur where
all characters
are illuminated
The selected language will
display.
“GB” = English
If factory defaults are restored to
the controller, this should be
changed to ―GB‖
Pressing the dial will exit the
language display quicker
The current
software version
will display
(Version 2.3 is
current as of
10/09)
Auto set will display for
a few seconds. NOTE:
If the A and B wires are
reversed from the
controller to the boiler,
the controller will not
exit this page

www.rinnai.us • © 2009 Rinnai America Corporation 11
THR 26MAR ’09
8:05 69º
After entering a chapter or display, any
setting available to change will be flashing.
A new setting can then be ―dialed in‖
Pressing the rotary button will save the new
setting
Turning the dial will move to other settings
that can be altered on that page
RS100 Navigation Overview
Pressing the Information button will move
to the previous page
Continually pressing the information
button will ultimately move back to the
operation page

www.rinnai.us • © 2009 Rinnai America Corporation 12
RS100 Display Overview
RS100 –Normal Operation Display
Day, Date, Month,
Year (currently
Monday, 22nd of
August, 2005)
Room or boiler (T1)
operating temp in
Celsius or Fahrenheit
24 hour clock with status bar indicating operating times during
current day (currently operating between 6-8 am and 4-10 pm)
Time
(24 hour clock)
III
Current heating
mode
=daytime heating
mode
=nighttime
(setback) heating
mode
=summer switch off
activated
=frost protection
activated
=If multiple time
programs are
enabled (P1-P3),
this clock with I, II,
or III will indicate
which program is
currently selected
I
Status bar indicating current operating mode (currently
indicating boiler is operating in timer mode)

www.rinnai.us • © 2009 Rinnai America Corporation 13
RS100 Operational Modes
This allows selection of unique operational modes-a cursor is displayed above the selected mode.
Any unique operating mode and its settings will be cancelled when a new unique mode is selected.
Vacation mode-Heating will
be inactive until the specified
date (this example is
September 24).At 0:00
(midnight) on this date,
operation will resume. This
can be set 250 days in
advance. DHW operation is
set to freeze protection
(100°F default).
Absent / Economy setback-
Heating will be inactive until
specified time (this example is
10:27 am). This can be set
between 0.5-
24 hours OR if P1
is selected, heating will resume
at the ON point of the next
heating event.
Party mode-Heating will
remain in operation until
specified time (this example
is 10:27 am). This can be
set between 0.5-24 hours
OR if P1 is selected, heating
will resume at the ON point
of the next heating event.
Operating Times-Heating
and DHW will operate based
on the times and
temperatures set in the
―Timeprograms‖ chapter. If
P1-P3 is selected, there will
be up to three different
schedules to select.
NOTE: While in these modes, a brief press of the dial will allow
immediate temperature adjustment.
NOTE: During normal operation in RC mode, the area/room temperature is displayed—not the set point.

www.rinnai.us • © 2009 Rinnai America Corporation 14
DHW only will operate based
on the times and
temperatures set in the
―Timeprograms‖ chapter. If
P1-P3 is selected, there will
be up to three different
schedules to choose. In this
mode, heating will not
operate—frost protection is
enabled.
Continuous heating and
reduced hot water operation
according to temperature set
points
Continuous reduced heating
and reduced hot water
operation according to set
back temperature set point
Heating and DHW are in
standby. Frost protection is
enabled.
This allows selection of unique operational modes-a cursor is displayed above the selected mode.
Any unique operating mode and its settings will be cancelled when a new unique mode is selected.
RS100 Operational Modes
NOTE: During normal operation in RC mode, the area/room temperature is displayed—not the set point.

www.rinnai.us • © 2009 Rinnai America Corporation 15
RS100 User Buttons
This button adjusts the relation of boiler
temperature to outside temperature. Ideally
the slope should create an intersection
between maximum boiler temperature and
outdoor design temperature (climate zone
temperature)
Example: If outdoor design temp is 14°F and
max boiler supply is set to 122°F (perhaps
for in-floor heating), a value of 1.00 should
be entered here.
If the user wants to adjust this (because the
area does not seem to heat well) it should be
done in increments of 0.10 every 2 days to
allow the boiler time to adjust to the changes.
212
194
176
158
140
122
104
86
68
68 61 54 46 39 32 25 18 10 3 -4
Outside Temperature (F)
Boiler Temperature (F)
Default setting is 1.50
Max boiler
temp is
176°F
Outdoor reset curve adjustment
(K-Factor)
14
NOTE: If set to RC mode, adjusting this
value will not have any effect on the
controller or boiler.

www.rinnai.us • © 2009 Rinnai America Corporation 16
•Outside—displays current outside temperature reading from the outdoor reset sensor
•Pressing the dial will show the average temperature over the last 24 hour period
•Out. Min/Max—displays the low and high temperatures recorded over the last 24 hour period
•NOTE: Outside information will not display if there is not an outside sensor (T4)
•Heat Gener.—displays the current boiler supply water temperature (T1)
•Pressing the dial will show the average temperature over the last 24 hour period
•Modulation—Shows percentage of modulation when boiler is in operation
•Hydrau. Press—displays current pressure in Bar as detected by the boiler pressure sensor (P1)
•To convert to PSI multiply by 14.7
•DHW—displays temperature of DHW sensor (T3). If no DHW sensor is in use display will indicate ―OFF‖ or if
an ON/OFF type sensor is used for an indirect tank display will indicate that sensor’s current state (ON/OFF)
•Pressing the dial will show the current temperature set point
•Combi models will not display this temperature as it is controlled internally.
•Room temp HC—displays current room temperature
•Pressing the dial will show the average temperature over the last 24 hour period
•Auto-P1 Day DHW; and,
•Auto-P1 Day HC—Both of these will display the following for heating or DHW
•Operational mode: Auto, Holiday, Absence, Party, etc
•P1 indicates the current program. This will not show if P1-P3 is not activated
•Boiler status: ON indicates the pump (and diverter valve) is servicing this side of the system (DHW or HC)
NOTE: Holding the Info button for 3 seconds will allow adjustment of the time these values will display (0.5-10
minutes). OFF will allow the display to follow the System setting (default 2 minutes).
RS100 User Buttons
Information
display Briefly pressing this button displays the following information
(turning the dial clockwise will advance to the next reading):

www.rinnai.us • © 2009 Rinnai America Corporation 17
Daytime room
temperature setting
Nighttime room
temperature setting
DHW temperature
setting After entering the correct
menu, dial in the correct
setting then press the
rotary button to save
RS100 User Buttons
Briefly pressing this button displays current daytime area (room) set
point. Turning the dial will adjust this value. The dial must then be
pressed to enter the new value
Briefly pressing this button displays current nighttime area (room)
set point. Turning the dial will adjust this value. The dial must then
be pressed to enter the new value
Briefly pressing this button displays current DHW set point. Turning
the dial will adjust this value. The dial must then be pressed to
enter the new value

www.rinnai.us • © 2009 Rinnai America Corporation 18
Operational mode is changed to Party. A value will be
displayed and available to change if needed.
Operational mode is changed to Absent/Economy . A
value will be displayed and available to change if needed.
Operational mode is changed to a one-time hot water boost while in
setback. This value can be adjusted from 0.5 to 240 minutes. When the
boost time or day time DHW temperature is reached, DHW is maintained
again at the setback temperature.
RS100 User Buttons-Shortcuts
Pressing and holding the following buttons for three seconds will immediately display the following.
Operational mode is changed back to Auto.
Programmed timers will take effect
After entering the correct
menu, dial in the correct
setting then press the
rotary button to save

www.rinnai.us • © 2009 Rinnai America Corporation 19
USER
AND
INSTALLER SETTINGS
THIS IS AN OVERVIEW ONLY—PLEASE REFER TO EACH BOILER OR CONTROLLER
INSTALLATION MANUAL THAT IS SHIPPED WITH THE PRODUCT FOR THE MOST UP TO DATE
INFORMATION. CONTACT RINNAI TECHNICAL SUPPORT IF NEEDED

www.rinnai.us • © 2009 Rinnai America Corporation 20
Parameter Access
There are two levels of access for making parameter changes:
•The user level allows clock and timer changes and basic system changes
•To access this level, hold the rotary dial for approximately 3 seconds
•The installer level allows access for all pertinent parameters
•To access this level, hold the heating and DHW buttons imultaneously
for approximately 3 seconds
•Code access will then display—using the dial to enter each digit, enter
code ―1234‖
•Installer access is then granted:
•At this point, repeat the user level access
procedure to enter the parameter menus--with
this code, user level and installer level will be
accessible
•After 2 Minutes of inactivity, these menus will be
exited automatically (this value can be changed)
Hold the heating
and DHW buttons
simultaneously for
3 seconds for
installer level
access
Hold the rotary dial for 3
seconds for consumer level
parameter access