Rinnai V2532FFUC, Integrity V2532FFUC User Manual
How to use your New
Continuous Flow
Water Heater
Model V2532FFUC
(Residential/Commercial indoor unit)
R
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 and service must be performed by a qualified
installer, service agency or the gas supplier.
SPECIFICATIONS
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Model V2532FFUCwww.rinnai.us 2
SPECIFICATIONS
Model V2532FFUC 3 www.rinnai.us
LIMITED WARRANTY
Rinnai Integrity Water Heater Models: REU-V2532FFU(C) and REU-V2532W(C)
WHA T IS COVERED?
This Warranty covers any defects in materials or workmanship, subject to the terms st ated below . This W arranty applies only to product sthat
are installed by a state qualified or licensed contractor . This W arranty is void if the installer has not atttended a Rinnai product knowledge
class before installing this water heater. This Warranty extends to the originalpurchaser and subsequent transferees, but only while the
product remains at the site of the original installation. This Warranty only extendsthrough the first installation of the product and terminates if
the product is moved or reinstalled at a new location.
HOW LONG DOES COVERAGE LAST?
Item Period of Coverage
Heat Exchanger 5 Y ears from Date of Purchase*
All other Parts and Components 5 Years from Date of Purchase
WHA T WILL RINNAI DO?
Rinnai will repair or replace the product or any part or component that is defective in materials or workmanship*, except as set forth as
follows. Rinnai will pay reasonable shipping costs, provided you obtain prior authorization from an Authorized Rinnai Distributor . Rinnai will
not pay labor charges associated with the repair or replacement of the product or any part or component. All rep air parts must be genuine
Rinnai parts. All rep airs or replacements must be performed by an individual or servicing comp any that has been authorized by Rinnai or its
distributor.
Replacement of the product or replacement of the heat exchanger 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 a product or heat exchanger . 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 the Heat Exchanger fails due to defect in material or workmanship within the fourth (4) or fifth (5) year from date of purchase,
Rinnai will make the following allowances toward the purchase of replacement heat exchanger:
Y ear of Failure Allowance
4 50%
5 25%
HOW DO I GET SERVICE?
Y ou must contact an Authorized Distributor or Installer for the rep air of a defective product under this Warranty . Failure to
contact an Authorized Distributor or Inst aller will void the W arranty . For the name of the Authorized Distributor or Installer nearest
you, please contact your local HV AC dealer or gas service technician, visit the Rinnai website (
9419 or write to Rinnai, 103 International Drive, Peachtree City , Georgia 30269.
Proof of purchase is required. Y ou can show proof of purchase with a dated sales receipt, or by completing and mailing the enclosed Warranty
registration card within 30 days of purchasing the product. Please complete the enclosed Warranty registration card and mail it to Rinnai
at the address shown on the card. Receipt of this card by Rinnai will constitute proof-of-purchase for this product. However, return of this
Warranty registration card is not necessary in order to validate this W arranty.
WHA T IS NOT COVERED?
This Warranty does not cover any failures or operating difficulties due to accident, abuse, misuse, alteration, misapplication, force majeure,
improper installation, improper maintenance or service, water quality , scale buildup, or for 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. This Warranty does
not cover any product when used as a pool or spa heater.
This Warranty does not apply if the water supply to the water heater does not meet the National Secondary Drinking W ater Regulations,
as set forth in the U.S. Code of Federal Regulations, 40 CFR, Chapter 1, Part 143.
Rinnai is not liable for any special, incidental, indirect or consequential damages that may arise, including damage to person or property ,
loss of use, or inconvenience. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above
limitation may not apply to you.
LIMIT A TION ON IMPLIED W ARRANTIES
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.
www.rinnai.us), call Rinnai at1-800-621-
Model V2532FFUCwww.rinnai.us 4
CONTENTS
Specifications.............................................................2,3
Warranty......................................................................... 4
Owner's Installation Information .................................. 6
Features of your new Integrity .................................... 7
Safety Issues ................................................................ 8
Basic Operation ............................................................ 9
About Hot Water ......................................................... 10
Scalds-First Aid .......................................................... 10
Remote Control Operation ......................................... 11
Error Messages .......................................................... 12
Maintenance & Service Information .................... 13,14
Trouble Shooting and Common Questions .............. 15
For Your Safety Read Before Operating...................16
Operating Instructions .......................................... 16,17
Care & Lime Condition Warning ...............................17
Model V2532FFUC 5 www.rinnai.us
OWNER’S INSTALLATION INFORMATION
IMPORTANT!
All Rinnai water heaters MUST be installed by a state qualified or
licensed contractor. Failure to comply with your local and state codes
pertaining to water heater installations will void the warranty on said
water heater(s). It is the responsibility of the person having the unit
installed to ensure the contractor has the proper licences and permits
for his state. In addition to the above, Rinnai requires all contractors
attend a product knowledge class before installing our water heaters.
This requirement MUST
be valid. Failure to comply with your local and state codes will result
in non-compliance and void the warranty of the product being
installed.
This appliance must be installed in accordance with local codes, or in the
absence of local codes, the National Fuel Gas Code, ANSI Z223.1 and/or the
CAN/CGA-B149, Installation Codes.
be met in order for your product’s warranty to
Install this product indoors, DO NOT install outdoors.
Do Not use this appliance if any part has been underwater.
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 underwater.
Detailed instructions on the proper installation practices to follow for
the installation of your new continuous hot water heater are included
at the back of this manual.
Model V2532FFUCwww.rinnai.us6
F
F
FEATURES OF YOUR NEW CONTINUUM
The
Integrity V2532FFUC is one of the most advanced water heaters available. It produces
hot water continuously at the temperature preset in the unit or at the temperature set on the
remote temperature controller. Installation of the remote temperature controller is
recommended for optimum performance.
The
Integrity V2532FFUC never runs out of hot water. While electricity, water and gas
supplies are connected, the
water flow rate through the unit exceeds 0.6 gpm and the temperature rise through the
unit exceeds 45°F.
Integrity V2532FFUC will produce hot water whenever the
F
F
F
F
F
The gas burner lights automatically when the hot water tap is opened, and goes out when
the tap is closed. Ignition is electronic, there is no pilot light. When the hot water tap is off,
no gas is used. You save energy and money with the Integrity V2532FFUC.
The temperature of the outgoing hot water is constantly monitored by a built in sensor. If the
temperature of the outgoing water rises to more than 6 degrees above the selected
temperature (shown on the optional digital remote control) the gas burner will automatically
go out. The gas burner will re-ignite once the outgoing hot water temperature falls below the
selected temperature.
With the MCC-45-4US remote control installed the water temperature is adjustable from 96
to 180°F. The water temperature cannot be set to a temperature other than 140°F
without the use of the MCC-45-4US remote control unit. If you require a temperature
other than 140°F you must install the MCC-45-4US remote control unit.
Error messages are displayed on the remote control units, simplifying service calls.
The
Integrity V2532FFUC incorporates a device to limit the temperature fluctuations (cold
water sandwich effect) when the water is rapidly turned off, then on again. To eliminate the
cold water sandwich effect completely, the
circulation loop, with a small storage tank, as shown on page 2
Integrity V2532FFUC can be installed with a
4.
F
F
The sound (noise) level from the
The
Integrity V2532FFUC is a very compact power vented device. It saves valuable floor and
wall space.
Model V2532FFUC 7 www.rinnai.us
Integrity V2532FFUC is very low.
SAFETY ISSUES
Always check water temperature by hand
before entering the shower or bath. The
temperature may have been changed.
The Integrity V2532C controls the water
temperature automatically. To do this it
sometimes needs to change the water flow
accordingly. The water flow from the hot water
tap may vary after the selected temperature at
the Remote Control is altered. The water flow
may also vary from summer to winter, as
incoming water temperatures differ.
Depending on the weather conditions and the
length of the pipe between the Integrity
V2532C and the tap in use, there may be a
variation between the temperatures displayed
at the Remote Control and the temperature of
the water at the tap.
140
138°F
Do not clean Remote Controls with solvents.
Use a soft damp cloth.
The water temperature can only be adjusted
between 96°F and 110°F when the hot water
tap is open, and hot water is flowing.
The vent/air intake should be positioned away
from flammable materials, trees, shrubs, etc.
Vent Terminal
Do not connect vent to natural draft vents or
fireplaces, this unit can only be used with an
approved Rinnai/Ubbink vent kit and
components. Do not vent unit into other
rooms. Vent terminal must be outside.
Model V2532FFUCwww.rinnai.us 8
BASIC OPERATION
Adjusting Temperature
1
The setpoint temperature of the
Integrity V2532(C) can only be adjusted
by the user using the Remote Control.
To adjust the setpoint temperature of the
Integrity V2532(C), all hot water taps
must be closed, and all circulating
pumps turned off.
TEMPERATURE CANNOT BE
ADJUSTED WHEN ANY HOT
WATER TAP IS OPEN, OR
WATER IS FLOWING THROUGH
THE WATER HEATER.
Simply press the or button
until the required temperature is
displayed on the Digital Monitor.
2
To operate the Integrity V2532(C) simply turn
any hot water tap on, or initiate water flow
through the unit with a circulating pump. This
will automatically light the burner providing hot
water at the preset temperature. If the remote
control has been installed, the green IN USE
indicator will glow on the remote control.
140°F
Note: The Rinnai water heater will not provide
hot water instantly at the hot water fixtures.
Any cold water existing in the hot water lines
must be purged first.
The Remote Control will display the water heaters
current setpoint temperature. There is a hot water scald
potential if the thermostat is set to high.
CHECK LOCAL CODES FOR THE MAXIMUM
WATER TEMPERATURE SETTING ALLOWED
WHEN USED IN NURSING HOMES,
SCHOOLS, DAY CARE CENTERS, AND ALL
OTHER PUBLIC USE APPLICATIONS.
Rinnai recommends fixing the water heater setpoint
temperature at 108°F for ALL public use applications.
Model V2532FFUC 9 www.rinnai.us
ABOUT HOT WATER
Hot Water Is Dangerous, especially for the young and the elderly or the
infirm. The Integrity V2532C allows you to precisely control the
temperature of your hot water, ensuring safe hot water temperatures.
Water Temperatures over 125°F can cause
severe burns instantly or death from scalds.
Hot Water can cause first degree burns with
exposure for as little as:
3 seconds at 140 °F
20 seconds at 130 °F
8 minutes at 120 °F
Test the temperature of the water with your
elbow before placing a child in the bath or
shower.
BURN
Do not leave a child or an infirm person in
the bath unsupervised.
Scalds - First Aid
1) Remove clothing; Remove all wet clothing, quickly. Wet clothing retains the heat.
2) Apply cold water for 30 minutes; Immediately submerge the burnt area in cold
water for 30 minutes to reduce the heat in the skin, preventing deeper burning.
Never use butter, oils or ointment to cover the burn. They may retain the heat.
3) Keep the scalded person warm; Place a blanket around the person.
4) Seek Medical Advice; Call your medical advice hotline and describe the scald,
follow their directions.
Model V2532FFUCwww.rinnai.us 1 0
REMOTE CONTROL OPERATION
Digital Monitor
Indicates the selected
water temperature. Error
messages flash in the
event of a failure.
Set Temperature
Main Controller
MCC - 45 - 4US
°F
In Use Indicator
Indicates that a hot water tap
is open. (The setpoint temperature cannot be adjusted
when indicator is illuminated.)
Maintenance
M
In Use
C
H
Maintenance Button
Pressing repeatedly shows
sequence of error codes water heater has experienced.
Thermostat
Increase or decrease
the desired water
temperature.
endless hot water system
CAUTION: Hotter water increases the risk of
scald injury. Before changing temperature setting, see instruction manual
When the Main Controller MCC-45-4US is used in public use applications,
it should be installed where it can not be adjusted by the public (i.e. a
maintenance room or managers office.
DIAGNOSTIC USE OF REMOTE CONTROL
1. To Display Error Codes -- Press Maintenance Button, M.
through stored error codes, press M followed by the H thermostat button.
2. To Display Water Flow through water heater -- Press H thermostat button,
hold for 2 seconds and simultaneously press M button.
3. To Display Outlet Water Temperature -- Press C thermostat button, hold for 2
seconds and simultaneously press M button.
Model V2532FFUC 1 1 www.rinnai.us
To sequence
ERROR MESSAGES
The Integrity V2532C has the ability to check its own operation continuously. If a fault occurs, an
Error Message will flash on the Digital Monitor of the Remote Controls. This assists with
diagnosing the fault, and may enable you to overcome a problem without a service call. Please
quote the code displayed when inquiring about service.
NOTE: Failure to remedy faults may result in severe burns, scalds, and/or death.
Code
Displayed
10
11
12
14
16
32
Fault Remedy
Air Supply or Exhaust Blockage
No Ignition
Flame Failure
Earthing Failure
Thermal Fuse
Over Temperature Warning
Outgoing Water Temperature Sensor
Faulty
Check that nothing is blocking
the air intake or exhaust.
Check that the gas is turned
on at the water heater, gas
meter or cylinder.
Check that the gas is turned
on at the water heater and gas
meter. Check for obstructions
in flue outlet.
Service Call
Service Call
Service Call
33
34
52
61
71
72
LC
Heat Exchanger Outgoing Water
Temperature Sensor Faulty
Combustion Air Temperature
Mod. Solenoid Valve Answer Abnormal
Combustion Fan Failure
Solenoid Valve Driving Circuit Faulty
Flame Sensing Device Faulty
Scale build-up in Heat Exchanger
Service Call
Service Call
Sensor Faulty
Service Call
Service Call
Service Call
Service Call
Service Call
Model V2532FFUCwww.rinnai.us 1 2
MAINTENANCE & SERVICE INFORMATION
Warning: Always turn off the electrical power supply, the manual gas
valve and the manual water control valve whenever servicing the unit.
The Integrity V2532C should be checked by a Rinnai
Certified Technician once a year. A Rinnai Certified
Technician should perform any repairs that may be
necessary.
The following items should be checked each inspection:
1) The area around the Integrity V2532C unit should be free from combustible
materials such as cloth, vegetation and building materials. (see page 8)
2) Check burners for presence of foreign debris.
3) Remove and clean the inlet water filter.
4) Keep the appliance area clear and free from combustible materials, gasoline,
and other flammable vapors and liquids.
5) Do not obstruct flow of combustion and ventilation air.
In the case of any fault or error message from the Integrity V2532C, first turn
all hot water taps off. Wait for 5 seconds. Turn the hot water tap back on. If the error
message still remains, call your Rinnai Authorized Service Representative or
Rinnai at 800-621-9419.
Should overheating occur or the gas supply fail to shutoff, turn off the manual
gas control valve to the appliance.
DO NOT ATTEMPT TO SERVICE YOUR Integrity V2532C YOURSELF.
Call a Rinnai Authorized Service Technician or call Rinnai at 800-621-9419.
Model V2532FFUC 1 3 www.rinnai.us
MAINTENANCE & SERVICE INFORMATION
MAINTENANCE SUGGESTIONS
This water heater has been designed and constructed
for a long performance life when installed and operated
properly under normal conditions. Regular inspections, as
outlined in this section, are strongly recommended as a
means of keeping your heater operating efficiently.
1. Cleaning
The water heater must be cleaned annually.
Keep the water heater clear of dust and debris
especially in and around burner.
Cleaning procedures for the Integrity are as follows:
1) Turn off and disconnect electrical power. Allow to
cool for
2) Remove the Front Panel by removing screws.
See parts breakdown on panels.
3) Use pressurized air to remove dust from around
main burner.
4) Use soft dry cloth to wipe cabinet.
one hour.
DO NOT DAMAGE OR DISTORT ANY
PARTS OF HEATER.
DO NOT USE WET CLOTH OR SPRAY
CLEANERS ON BURNER.
2. Visual check of main burner flames.
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 view ports. Any and all
parts removed for inspection or service must be
replaced before operating the unit.
The flame pattern should be as shown in the
following Figures.
* VENT MAINTENANCE
* VENT SYSTEM
Must be checked annually for
blockage or deterioration. See
vent installation instructions.
* MAINTENANCE-
ELECTRIC MOTORS
Motors are permanently
lubricated and need no
lubrication. Keep fan and motor
free of dust and dirt, clean
annually.
Model V2532FFUCwww.rinnai.us 1 4
TROUBLE SHOOTING AND COMMON QUESTIONS
- When I was using the hot water, the water got cold!
Q
- If you adjusted the flow from the tap to lessen it, you may have gone
A
below the minimum flow required. The Integrity V2532 requires 0.5
GPM to operate. If you mix the water with a tap and attempt to get a
temperature well below the temperature being controlled by the unit, it
may drop the flow below 0.5 GPM. Decrease the temperature supplied
by the Integrity V2532 at the remote control or increase your total
flow.
- White smoke comes out of the exhaust!
Q
- During colder weather when the exhaust temperature is hotter than the
A
air, the exhaust fumes condense producing white steam.
- When I open a hot tap. I do not immediately get hot water!
Q
- Hot water must travel through your plumbing from the Integrity
A
V2532 to the faucet. This can take up to 2 or more minutes depending
upon your plumbing system. If hot water is disired instantly at the hot
water fixture, a circulaton loop system must be installed. Please
contact your plumber for details.
- After I turn off the hot water tap, the fan on the Integrity V2532
Q
continues to run!
- The fan is designed to be on for 65 seconds after the flow of water
A
stops.This is to ensure constant water temperatures during rapid
starting and stopping, as well as exhausting any residual gas flue
products from the unit.
Model V2532FFUC15 www.rinnai.us
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