Rinnai R98LSE-ASME User Manual
Outdoor Tankless Water Heater
Operation and Installation Manual
R63LSe ..............REU-VA2024WD
R75LSe ..............REU-VA2528WD(A)
R94LSe ..............REU-VA2535WD
R98LSe ..............REU-VA3237W
R98LSe-ASME...REU-VA3237W-ASME
Table of Contents......................2
Consumer Safety Information ...4
Operating Instructions...............5
Maintenance..............................12
Error Codes ...............................13
Register your product at www.rinnairegistration.com or
call 1-866-RINNAI1 (746-6241)
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
WARNING: If the information in these instructions is not
followed exactly, a fire or explosion may result causing
property damage, personal injury or death.
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 Instructions..............17
Consumer Support....................38
ANS Z21.10.3
•
CSA 4.3
—
Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
R98LSe-ASME
This model has been built in accordance with
the requirements of the ASME Boiler and
Pressure Vessel Code and have received the
Certificate of Authorization from the National
Board. The heat exchanger on this unit has
the NB and HLW stamps
Table of Contents
Specifications.....................................................3
Consumer Safety Information
Safety Definitions............................................. 4
Safety Behaviors and Practices ...................... 4
Safety Features............................................... 4
Description of Operation ................................... 5
Operating Instructions
Features Available on Temperature
Controllers ....................................................... 5
Temperature Controllers - Models................
Setting the Temperature.................................. 8
Temperature Options Without
a Temperature Controller ................................ 8
Temperature Ranges....................................... 9
Setting the Sound Volume(Voice Prompt) ...... 9
Setting the Clock ............................................. 9
Using the Water Smart /Bath Fill Function....10
Overview...................................................10
Setting the Water Volume......................... 10
Filling the Tub ........................................... 11
Setting Controller to Mute.............................. 11
Maintenance
Cleaning.................................................... 12
Air Intake and Exhaust.............................. 12
Motors....................................................... 12
Temperature Controller............................. 12
Lime / Scale Buildup................................. 12
Snow Accumulation .................................. 12
Visual Inspection of Flame........................12
Error Codes
Error Code Table...................................... 13,14
Troubleshooting for Common Issues ............ 15
Accessing Operating Information .................. 15
Water Quality................................................. 15
Flushi
ng the Heat Exchanger
(Error Code: LC or 00)
........................ 16
6,7
Installation Instructions....................................17
General Instructions.......................................17
Clearances from Appliance............................18
Attachment of the Water Heater.....................18
Electrical Connection......................................19
Gas Piping
General Instructions.................................19
Pipe Sizing Procedure - Example ............20
Water Piping
General Instructions.................................21
Pressure Relief Valve...............................21
Freeze Protection.....................................21
Freeze Protection Piping................................22
Recommended Piping for Basic Installation...23
Recommended Piping for
Circulation Systems........................................24
Optional Piping for Circulation Systems.........25
Flue Terminal Clearances
(ANS Z21.10.3 • CSA 4.3
Additional Clearances - Vent Trminal .............28
High Altitude Installations...............................29
Connecting Multiple Water Heaters................29
Temperature Controller Installation
Location....................................................30
Configurations..........................................30
Cable Lengths and Size...........................30
Mounting on the wall................................
Connecting to the R75LSe, R94LSe, R98LSe,
and R98LSe-ASME
Connecting to the R63LSe .......................
Operating Instructions....................................33
Technical Data
Pressure Drop Curve......................................34
Outlet Flow Data.............................................34
Space Heating................................................35
Dimensions.....................................................36
Ladder Diagram..............................................37
Consumer Support
Warranty Information......................................38
Limited Warranty ..................................... 38, 39
)...................... 26, 27
31
.....................................
31
32
2 VA Series Outdoor LS Manual
Specifications
Model R63LSe R75LSe R94LSe R98LSe
Minimum Gas Consumption Btu/h 22,200 15,000 19,000
Maximum Gas Consumption Btu/h 150,000 199,000 180,000 237,000
Hot water capacity (Min - Max) *
Hot water capacity, (45ºF rise)
Default Temperature Setting (no controller) 120º F (49º C)
Temperature Controller Default Temperature Setting
Maximum Temp Setting (Commercial **) 160º F (71º C) 185º F (85º C)
Maximum Temp Setting (Residential)
Minimum Temperature Setting 98º F (37º C)
Weight
Efficiency Rating
Noise level 49 dB (A)
Electrical
Consumption
By-Pass Control Fixed Electronic
Minimum Gas Supply
Pressure
Maximum Gas Supply
Pressure
Type of Appliance Temperature controlled continuous flow gas hot water system.
Normal 36 W 50 W 55 W 72 W
Standby
Anti-frost Protection
Natural Gas 5.0 inch W.C.
Propane 8.0 inch W.C.
Natural Gas 10.5 inch W.C.
Propane 13.5 inch W.C.
0.6 - 6.3 GPM
(2.3 - 24 L/min)
5.3 GPM
(20 L/min)
36.4 lb
(17 kg)
74 W 100 W 116 W
0.6 - 7.5 GPM
(2.3 - 28 L/min) L/min)
6.6 GPM
(25 L/min)
Selectable at 120º F (49º C) or at 140º F (60º C)
0.6 - 9.4 GPM
(2.3 - 35.5
7.4 GPM
(28 L/min)
104º F (40º C)
46 lb
(21 kg)
83.0%
2 W
0.6 - 9.8 GPM
(2.3 - 37 L/min)
8.7 GPM
(33 L/min)
55 lb
(25 kg)
R98LSe-
ASME
Operation With or without temperature controls, mounted in kitchen, bathroom, etc.
Approved Gas Type Natural Gas or Propane - Ensure unit matches gas type it's being installed on.
Connections Gas Supply: 3/4" MNPT, Cold Water Inlet: 3/4" MNPT, Hot Water Outlet: 3/4" MNPT
Ignition System Direct Electronic Ignition
Electric Connections Appliance: AC 120 Volts, 60Hz. Temperature Control: DC 12 Volts (Digital)
Water Temperature Control Simulation Feedforward and Feedback.
Water Supply Pressure Minimum Water Pressure: 20 PSI (Recommended 30-80 PSI for maximum performance)
Maximum Water Supply Pressure 150 PSI
Temperature Control Cable Non-Polarized Two Core Cable (Minimum 22 AWG)
* Minimum flow may vary slightly depending on the temperature setting and the inlet water temperature.
** for commercial and hydronic applications requiring higher temperatures.
Rinnai is continually updating and improving products. Therefore, specifications are subject to change without
prio
r notice.
The maximum inlet gas pressure must not exceed the value specified by the manufacturer. The minimum value
listed is for the purpose of input adjustment.
VA Series Outdoor LS Manual 3
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.
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.
•
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.
•
Any alteration to the appliance or its controls can be
dangerous and will void the warranty.
•
Always check the water temperature before entering
a shower or bath.
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.
4 VA Series Outdoor LS Manual
Power Surge Fuse: A glass fuse protects against
•
overcurrent. If the fuse blows then all indicator
lamps will be off.
Fusible Link: In case the overheat feature does
•
not prevent the temperature from rising then the
fusible link will break shutting off the appliance.
Description of Operation
The Rinnai water heater is one of the most advanced
water heaters available. It provides a continuous
supply of hot water at a preset temperature. This
appliance is direct vent where air is brought in from the
outside and combustion gases are exhausted to the
outside.
While electricity, water, and gas supplies are
connected, the Rinnai water heater produces hot water
whenever a hot water tap is open.
Ignition is electronic. There is no pilot light consuming
gas while the water heater is not being used. The gas
burner lights automatically when the hot water tap is
opened and goes out when the tap is closed.
Installation of the temperature controller is highly
recommended. The temperature controller can set the
temperature within a specific range and can provide
error codes to diagnose any problems.
The temperature of the outgoing hot water is constantly
monitored. The Rinnai water heater may adjust the
water flow in order to maintain the temperature setting.
The water flow may vary from summer to winter due to
the difference in ground water temperature.
Operating Instructions
Features Available on Temperature Controllers
The MC-91 temperature controller is supplied with the appliance. Additional functions are available through the
use of optional controllers.
MC-91
Features
MC-100
MCC-91
BC-100
MC-502
Description
Call
Clock
Error Codes
Function
In Use Indicator
ON/OFF Button
Power Save
Priority Button /
Indicator
Sound Volume
Temperature Display
Thermostat
Water Smart / Bath Fill
Button / Indicator
When a fault is detected an error code flashes at the temperature
Indicates that hot water is being supplied (i.e. a hot water tap is
Used to turn the water heater ON or OFF.
Indicates that this controller is setting the temperature . Priority
Used to adjust the voice prompt volume.
Shows the temperature setting.
Increases or decreases the temperature setting.
Used to select the Water Smart / Bath Fill Function to fill a bath
Sends a short series of beeps to all controllers in the system. It is
not an intercom.
12 hour AM/PM clock.
display on models MC-91, MCC-91, and MC-502; and flashes at
the clock display on models MC-100 and BC-100.
Used on this model to set the clock or sound volume.
open)
Allows the temperature controller to be in an energy saving mode.
can be switched to another controller by pressing its Priority
Button when no hot water is running.
with a predetermined volume of water.
Used to select the water volume for the Water Smart / Bath Fill
Water Volume
VA Series Outdoor LS Manual 5
Function.
Temperature Controllers - Models
MC-91-1US & MCC-91-1US
Dimensions (inches): 3.5 W x 4.75 H x 0.75 D
The MC-91 controller is the standard temperature controller that is supplied with the water heater. On indoor
models it is integrated into the front panel. The MCC-91 controller is for commercial and hydronic applications
requiring higher temperatures. When the MCC-91 controller is connected, these higher temperatures are
available on all controller models in the system. Refer to the section on temperature ranges.
In Use
Indicator
Priority
Indicator
Temperature
Display
Priority
Button
Thermostat
MC-502RC-1US-S * (Wireless)
Dimensions (inches): 4.33 W x 5.90 H x 1.16 D
Temperature
Display
Thermostat
ON/OFF
Button
ON/OFF
Button
Priority
Indicator
In Use
Indicator
Priority
Button
* Requires the transceiver,
MC-502RC-1US-M, to be
connected to the water
heater.
Refer to the MC-502RC-1US-S manual and the Wireless Controller Installation Instructions for complete details
on features, operation, and installation.
6 VA Series Outdoor LS Manual
Temperature Controllers - Models
BC-100V-1US
Dimensions (inches): 8.0 W x 4.125 H x 0.875 D
NOTICE
Priority
Button and
Indicator
Call
Clock
The BC-100V controller is water resistant. Avoid splashing the controller.
In Use
Indic ator
Temperature
Display
Water Smart
Bath Fill Indicator
ON/OFF
Button
Water Smart
Bath Fill
Button
Power Save
Water Volume
Thermostat
Dimensions (inches): 5.0 W x 4.75 H x 0.75 D
Sound Volume
In Use
Indicator
Temperature
Display
Clock
Call
MC-100V-1US
Thermosta t
Function
Priority Button
and Indicator
ON/OFF
Button
VA Series Outdoor LS Manual 7
Setting the Temperature
DANGER
1. Press the “Priority button” on the
temperature controller. The
green Priority light will glow
indicating that this controller is
controlling the temperature and
that the Rinnai water heater is
ready to supply hot water.
The priority can only be changed
while no hot water is running.
Hot water can be dangerous, especially for infants or children, the elderly,
or infirm. There is hot water scald potential if the thermostat is set too high.
Water temperatures over 125º F (51º C) can cause severe burns or
scalding resulting in death.
Hot water can cause first degree burns with exposure for as little as:
3 seconds at 140º F (60º C)
20 seconds at 130º F (54º C)
8 minutes at 120º F (48º C)
Test the temperature of the water before placing a child in the bath or
shower.
Do not leave a child or an infirm person in the bath unsupervised.
NOTICE
While any hot water is being
provided, the temperature setting can
only be adjusted between 98º F and
110º F.
NOTICE
Check local codes for the maximum
water temperature setting allowed
when used in nursing homes,
schools, day care centers, and all
other public applications.
2. Press the or buttons to
obtain the desired temperature
setting.
All hot water sources are able to
NOTICE
If a newly installed unit with a temperature
controller has not been powered for
at least 6 hours then the temperature
will return to the default setting of
104º F (40º C) if power is interrupted.
provide water at this temperature
setting until it is changed again at
this or another temperature
controller.
NOTICE
There may be a variation between
the temperature displayed on the
temperature controller and the
temperature at the tap due to
weather conditions or the length of
pipe to the water heater.
Temperature Options Without a Temperature Controller
The default temperature setting for this appliance
installed without a temperature controller is 120º F
(49º C). If desired the temperature setting can be
changed to 140º F (60º C) by adjustment of a dip
switch.
Set dip switch 5 to ON to obtain 140º F water
temperature setting.
Set dip switch 5 to OFF (default) to obtain 120º F
water temperature setting.
WARNING
DO NOT adjust the other dip
switches unless specifically
instructed to do so.
120º F (49º C) 140º F (60º C)
Switch No.
ON
O
F
F
1
2
3
4
5
6
7
8
Switch No.
ON
O
F
F
1
2
3
4
5
6
7
8
8 VA Series Outdoor LS Manual
Temperature Ranges
This water heater will attempt to provide hot water at the temperature setting even when the water flow is varied
or when more than 1 tap is in use. The water heater can deliver water at only one temperature setting at a time.
The available temperatures for a given model are provided below.
Model
R63LSe
R75LSe
R94LSe
R98LSe
R98LSe-ASME
Temp in Celsius ºC 37 38 39 40 41 42 43 46 49
* Re-setting the Maximum Temperature
If the model name on the side of the water heater ends with
units have a default maximum temperature of 120º F (49º C) and an option to increase the maximum
temperature to 140 ºF (60 ºC). Temperature settings from 125-140 ºF (52-60 ºC) are available by setting dip
switch 6 to ON in the SW1 bank of 8 dip switches.
Units with model names ending in
** MCC-91 Temperature Controller
These settings require the MCC-91 controller. When the MCC-91 controller is connected, these higher
temperatures are available on all controller models in the system. Use of an MCC-91 controller in a residential
dwelling will reduce the warranty coverage to that of a commercial warranty application.
The MCC-91 controller is intended for commercial and hydronic applications only. If an MCC-91 controller is
used in a residential dwelling for a hydronics application, a mixing valve must also be installed to limit the
potable hot water temperature to a safe temperature. Water temperatures over 125º F (51º C) can cause
severe burns or scalding. Refer to the Danger Alert on water temperatures. Rinnai shall not, in any event, be
liable for damages resulting from such misuse or misapplication.
98 100 102 104 106 108 110 115 120
98 100 102 104 106 108 110 115 120
“-US” have a default maximum temperature of 140 ºF (60 ºC).
Temperature Settings Available (ºF)
125 * 130* 135* 140* 150
125* 130* 135* 140* 150
52 * 54 * 57
“-UC” (ex. “REU-VA2535WD-UC”), then these
*
**
**
60 * 66
**
160
**
160
**
71
**
185
**
85
**
Suggested temperatures are
Kitchen 120
Shower 98
Bath Fill 102
To change the temperature scale from Celsius to Fahrenheit or vice versa, press and hold the
5 seconds while the water heater is OFF.
ºF (49º C)
º - 110º F (37º - 43º C)
º - 110º F (39º - 43º C)
These temperatures are suggestions only.
A temperature lower than 98
obtained at the tap by mixing with cold water.
º F (37º C) can be
“On/Off“ button for
Setting the Sound Volume (Voice Prompt)
MC-100V Press the “Function” button to
adjust the voice prompt
volume. The default sound
volume is set to Medium.
Each subsequent press of the
or button cycles through
the volume levels in the order
below.
Medium Volume
(default)
VA Series Outdoor LS Manual 9
High Volume
Off Volume
(beep)
BC-100V Press the “Sound Vol.” button to
adjust the voice prompt volume.
The default sound volume is set
to Medium. Each subsequent
press of the button cycles
through the volume levels in the
order below.
Off Sound
(no beep)
Low Volume
Using the Water Smart / Bath Fill Function
Overview
This function is exclusive to the BC-100V temperature
controller. The bath fill function allows the consumer
to fill a tub with a preset volume of water at a preset
temperature. This is done by pressing the bath fill
button on the BC-100V controller while no hot water is
flowing and then opening only the hot water tap. The
water heater will cease the hot water flow when the
preset volume has been reached. The hot water tap
should then be closed and the bath fill button pressed.
The temperature settings for the bath fill function are
limited to those in the table below.
Bath Fill Temperature Settings Available
ºF 98 100 102 104 106 108 110 115 120
ºC 37 38 39 40 41 42 43 46 49
NOTICE
Power
Loss
NOTICE
Multiple
Water
Heaters
NOTICE
Anti-scald
Fixtures
If power is lost during the bath fill
function, the water heater will shut
down but the water will continue to
flow. When power returns, the water
shuts off and Error Code 03 appears
on the controller.
If power is lost after the bath has filled
but before the bath fill function button
is de-selected, then the water will not
flow during the power loss or after the
power is returned. Once power
returns, close the hot water tap and
de-select the bath fill function. No
error code appears.
The bath fill function will not work
properly if it is connected to multiple
water heaters. The tub will overfill
because the bath fill function is not
able to measure the water volume
when connected to multiple water
heaters.
Do not use with single handle fixtures
that have anti-scald features built into
them. These fixtures allow a
predetermined amount of cold water
which is not taken into account by the
bath fill function.
Setting the Water Volume
The default volume is set to 25 gallons. The volume
can be set between 10 and 120 gallons.
1. Press the “Priority button” on the
temperature controller. The green
Priority light will glow indicating
that this controller is controlling
the temperature and that the
Rinnai water heater is ready to
supply hot water.
2. Press the “Temp” or buttons
to obtain the desired temperature
setting.
3. Press the “Water Vol.” or
buttons to obtain the desired
water volume in gallons.
NOTICE
To Prevent
Over Filling
Be careful not to overfill the bath. An
average bath volume is 60 gallons.
When filling the bath using this
function for the first time:
•
Monitor and remain by the bath
while the water is running.
Use a low bath fill volume less
•
than 25 gallons
10 VA Series Outdoor LS Manual
Using the Water Smart / Bath Fill Function
Filling the Tub
ON!
HOT
COLD
1. Press the “Water Smart / Bath Fill”
button once. The button will
illuminate, a tone will sound, and
the word “Bath” will appear next to
the temperature setting.
2. The voice prompt will announce
“The hot water system is ready.
Open the hot water tap.”
Open the hot water tap. The “In
Use” indicator will illuminate on all
controllers. The hot water will
begin to flow.
NOTICE
To Stop the
Bath Fill
Before it
Finishes
To stop the water flow during the Bath
Fill function, press the “Water Smart /
Bath Fill” button. The button will flash
and the voice prompt will announce,
“Hot water is not available. Turn off
all hot water taps and push the Bath
Fill button.” Follow the voice prompt
instructions.
ON!
HOT
COLD
3. When the preset volume of water
has been produced then
the water flow will cease
•
the “Water Smart / Bath Fill”
•
button will flash
a tone will sound
•
the voice prompt will
•
announce, “Bath fill is
complete. Turn off the bath
hot water tap and push the
Bath Fill button.”
4. Turn off the bath hot water tap and
push the Bath Fill button. The
water heater will not allow hot
water to flow from any source until
the “Water Smart / Bath Fill” button
is pushed.
The button light will go out and the
word “Bath” will disappear from the
display.
NOTICE
When
Other Taps
Are Open
During the bath fill function, any hot
water flowed at other locations,
subtracts from the total amount of
water for the bath. For example if the
bath fill function is set for 50 gallons
and 5 gallons of hot water are used at
other locations during the fill period
then the bath will only fill with 45
gallons.
Setting Controller to Mute
Models MC-91 and MCC-91
To eliminate the beeps when keys are pressed or to turn the beeps back on, press and hold both the and
buttons until a beep is heard (approximately 5 seconds).
Setting the Clock
MC-100V Press the “Function” button twice within 10 seconds to set the clock. Press the or
button to reach the desired time. The clock on the BC-100V automatically shows
the time which has been set on the MC-100V.
VA Series Outdoor LS Manual 11
Maintenance
WARNING
Turn off the electrical power supply, the manual gas
valve and the manual water control valve whenever
servicing the unit.
Repairs should be performed by a qualified service
technician. The appliance should be inspected
annually by a qualified service technician. Verify
proper operation after servicing.
Cleaning
It is imperative that control compartments, burners,
and circulating air passage ways of the appliance be
kept clean.
Clean as follows:
1. Turn off and disconnect electrical power. Allow to
cool.
2. Remove and clean the water inlet filter.
3. Remove the front panel by removing 4 screws.
4. Use pressurized air to remove dust from the main
burner, heat exchanger, and fan blades. Do not
use a wet cloth or spray cleaners on the burn er.
Do not use volatile substances such as benzene
and thinners. They may ignite or fade the paint.
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 (blocked or partially
blocked) by obstructions.
Visual Inspection of Flame
The burner must flame evenly over the entire surface
when operating correctly. The flame must burn with a
clear, blue, stable flame. See the parts breakdown of
the burner for the location of the view ports.
The flame pattern should be as shown in the figures
below.
5. Use soft dry cloth to wipe cabinet.
Air Intake and Exhaust
The air intake and exhaust should be inspected at
least annually for blockages or damage.
Motors
Motors are permanently lubricated and do not need
periodic lubrication. Keep fan and motor free of dust
and dirt by cleaning annually.
Temperature Controller
Use a soft damp cloth to clean the temperature
controller. Do not use solvents.
Lime/Scale Buildup
If you receive Error Code “LC”, refer to the procedure,
Flushing the Heat Exchanger. Refer to the section on
Water Quality to see if your water needs to be treated
or conditioned. (When checking maintenance code
history “00” is substituted for “LC”.)
12 VA Series Outdoor LS Manual
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