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
FOR YOUR SAFETY READ BEFORE OPERATING
Warning: If you do not follow these instructions exactly, a fire or explosion
may result causing property damage, personal injury or loss of life.
A. This appliance does not have a pilot. It is
equipped with a direct ignition device which
automatically lights the burner. Do not try to
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
neighbors phone. Follow the gas suppliers
instructions.
OPERATING INSTRUCTIONS
If you cannot reach your gas supplier, call the
fire department.
C. U. Use only your hand to operate remote
control keypad. Never use tools. If the
remote keypad doesn't work, 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.
1) STOP! Read the safety information above
before proceeding.
2) Set the thermostat to lowest setting.
3) Turn off all electric power to the appliance.
4) This appliance does not have a pilot. It is
equipped with a direct ignition device which
automatically lights the burner. Do not try to
light the burner by hand.
5) Turn the manual valve located at gas
inlet of the appliance clockwise
to OFF.
Closed manual valve
©
6) Wait (5) minutes to clear out any gas. If
you then smell gas, STOP! Follow B in
the safety information above on this label.
If you dont smell gas, go to next step.
(OFF position)
Open Manual valve
(ON position)
¨
Model V2532FFUCwww.rinnai.us 1 6
OPERATING INSTRUCTIONS
7) Turn the manual valve located at the gas
inlet of appliance counterclockwise
to ON.
8) Turn on all electric power to the appliance.
9) Set thermostat to desired setting.
10) If the appliance will not operate,
Follow the instructions To Turn Off
Gas To Appliance and call your
service technician or gas supplier.
To Turn Off Gas To Appliance
1) Set the thermostat to lowest setting.
2) Turn off all electric power to the appliance if service is to be performed.
3) Turn the manual valve at gas inlet of appliance clockwise to OFF
CARE & LIME CONDITION WARNING
Care of Units Exterior:
Keep the exterior cabinet clean. Use a soft cloth and warm water when cleaning the cabinet. Do
Not use volatile substances such as benzene and thinners, as they may ignite, or cause fading of
the paint.
Lime Condition Warning Signal:
If you notice LC flashing on the remote key pad, this means the unit is beginning to lime up, and
MUST be flushed. Contact a qualified Rinnai service technician to flush the appliance. Failure to
flush the appliance when LC is flashing, will cause damage to the heat exchanger. Damage
caused by lime build up is not covered by the units warranty.
Model V2532FFUC 1 7 www.rinnai.us
Installer’s Instructions
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.
be met in order for your product’s warranty to
Contents
of Installers
Manual
www.rinnai.us
800-621-9419
Warnings ............................................................ 19
Performance Data .............................................. 20
Locating the vent terminal................................. 21
Dimensions ........................................................ 22
Recommended Piping ................................... 23,24
Venting .......................................................... 25,26
Gas Piping Sizing Charts ................................. 27
Gas Piping Notes .............................................. 28
Pressure Relief Valve ........................................ 29
Electrical Connection Notes .............................. 30
Wiring Diagram ............................................. 31,32
Lighting the Unit ................................................ 33
Remote Control ............................................. 34,35
Testing ................................................................ 36
Diagnostic Points .............................................. 37
Schematic Diagram ........................................... 38
Exploded View ........................................... 39 - 42
Parts List ................................................... 43 - 47
Model V2532FFUCwww.rinnai.us 1 8
INSTALLERS INSTALLATION INSTRUCTIONS
-Warnings-
This manual must be followed exactly.
1) Read the safety issues completely before installing the Integrity V2532C.
2) This water heater is suitable for water (potable) heating or space heating.
- The piping and components connected to the Integrity V2532C must be approved
for use in potable water systems.
- Toxic chemicals such as those used for boiler water treatment are NOT to be
introduced to the potable water used for space heating.
- The Integrity V2532C, if it will be used as a potable water source, it must not be
connected to a system that was previously used with a nonpotable water heating
appliance.
3) The Integrity V2532C is not suitable for use in pool or spa applications.
4) This unit is designed to be installed indoors using the proper vent piping to
exhaust by-products of combustion to the outside environment. Contact your
dealer or Rinnai for proper vent kits. DO NOT operate this unit without vent
piping connected. Exhaust gasses must be expelled outside the home.
joints shall be taped to help prevent leakage around joints. (Aluminum tape is
recommended.)
All pipe
5) Maintain proper space around the unit for proper servicing and operation.
Minimum clearances from combustible materials are listed below.
Top of Heater 6 inches
Back of Heater 0 inch
Front of Heater 6 inches
Sides of Heater 2 inches
Floor 12 inches
Vent/Air Intake 0 inches
6) Installer must install a Pressure relief valve. Pipe pressure relief discharge to a
drain or outside environment (see page 29).
7) The appliance should be located in an area where leakage of the unit or
connections will not result in damage to the area adjacent to the appliance or to
lower floors of the structure. When such locations cannot be avoided, it is
recommended that a suitable drain pan, adequately drained, be installed under
the appliance. The pan must not restrict combustion air flow.
Model V2532FFUC 1 9 www.rinnai.us
INSTALLERS INSTALLATION INSTRUCTIONS
INTEGRITY OUTLET FLOW DATA
INSTALLERS INSTALLATION INSTRUCTIONS
INTEGRITY PRESSURE DROP CURVE
Model V2532FFUCwww.rinnai.us 2 0
INSTALLERS INSTALLATION INSTRUCTIONS
Locating the vent terminal
RECOMMENDED VENT/AIR INTAKE TERMINAL POSITION
Terminals should be so positioned as to avoid
products of combustion entering openings into
buildings or other flues or vents.
Vent/Air Intake Terminal positions - MINIMUM dimensions.
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INSTALLERS INSTALLATION INSTRUCTIONS
Dimensions
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INSTALLERS INSTALLATION INSTRUCTIONS
RECOMMENDED PIPING - BASIC INSTALLATION
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INSTALLERS INSTALLATION INSTRUCTIONS
RECOMMENDED PIPING - CIRCULATION SYSTEMS
V2532FFUC
V2532WC
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INSTALLER’S INSTALLATION INSTRUCTIONS
Venting
The maximum allowable “Equivalent Length (D)” of vent pipe for the V2532C water heater
is 41 feet with 3 bends (as determined using the formula below). If “D” is greater than
41, the vent/air intake piping is too long or there are too many elbows, redesign the vent
pipe run.
D = L + (B
x 6) + (B
90
x 1.5) D = Total Equivalent Length of vent system.
45
L = Length of vent/air intake in feet.
B90= Number of 90° elbows.
B45= Number of 45° elbows.
To help prevent condensation in the vent/air intake piping, the combustion fan has two dip
switch settings. Dip switch number 1 is shipped from the factory set to the “OFF” position; this
is suitable for the maximum vent/air intake length.
Depending upon the vent/air intake length, Dip switch No. 1 may need to be adjusted to
compensate fan speed. Read the following instructions, to determine which position this switch
should be placed in.
When the Equivalent Length of vent pipe, D, is more than 22 feet, leave dip switch
number 1 in the “OFF” position.
When the Equivalent Length of vent pipe, D, is 22 feet or less, dip switch number 1 must
be moved to the “ON” position.
Dip switch # 1 is located in the top row of dip switches, 1 through 8 on the PC board. See the
diagram below to identify the proper switch. If you do not understand the following information,
contact Rinnai at 1-(800)621-9419 for assistance.
Do not alter dip switch number 1 before using formula, to determine the proper setting.
Example #1:
You have 6 feet of vent pipe, and two 90° elbows.
D = 6 + (2 x 6) + (0 x 1.5)
D = 18 Dip switch number 1 should be “ON”
Vent/air intake
piping length
Example #2:
You have 15 foot of vent pipe, one 90° elbow and two 45° elbows.
D = 15 + (1 x 6) + (2 x 1.5)
D = 24 Dip switch number 1 should be “OFF”
Warning: All other dip switches with the exception of dip switch No.1, shown in the diagram
below, MUST NOT be altered. Unauthorized adjustments can cause property
damage, personal injury, scalding, or death.
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INSTALLER’S INSTALLATION INSTRUCTIONS
Venting
Vent/Air Intake for Continuum V2532C Hot Water Systems
The only vent/air intake systems approved for use with this appliance by CSA are the Rinnai/Ubbink vent
system or the Heatfab Saf-T Vent SC vent system. The vent system must vent directly to the outside of
a building and use outside air for combustion as indicated in the diagrams below. The minimum and maximum
wall thickness for sidewall venting are: Minimum = 4” and Maximum = 20”.
Horizontal Direct
Horizontal Direct Vent Installation
The Continuum V2532C may be installed on the internal
surface of an external wall using a standard vent system
kit. A typical installation is shown in the diagram to the
right. The standard vent system kit consists of :
One vent termination kit
•
One discharge adaptor
•
Horizontal Extension Installation
The Continuum V2532C may also be installed on an internal
wall which is near to an external wall. This can be done using
a combination of extension tube(s), 90° or 45° elbow(s).
The maximum “EQUIVALENT LENGTH” of the vent/air intake
system is 41 feet, with a maximum of 3 bends, as
calculated using the formula on page 29 (i.e. an installation
with 23 feet of extension tubes, and three 90° elbows). The
maximum vertical height of the vent/air intake system shall
not exceed 5 feet unless an approved condensation collar
is used.
Vertical Direct Vent Installation
The Continuum V2532C can also be installed in roof spaces
or areas where vertical venting is required. Venting vertically
can be acheived using a combination of extension tube(s),
a vertical flue adaptor, a roof terminal, and flashing. The
maximum “EQUIVALENT LENGTH” of the vent/air intake
system is 41 feet, with a maximum of 3 bends, as
calculated using the formula on page 29. However, the
maximum HEIGHT of the vent system is limited to 21 feet.
The maximum vertical height of the vent/air intake system
shall not exceed 5 feet unless an approved condensation
collar is used.
Horizontal Extension
Maximum Height of 5'
Without
Condensate Collector
Vertical Direct
Roof Terminal
Flashing
Vertical Flue Adaptor
Model V2532FFUCwww.rinnai.us 2 6
INSTALLER’S INSTALLATION INSTRUCTIONS
Gas Pipe Sizing Charts
Capacity Table for Natural Gas
cubic feet / hour
(table assumes .3 inch pressure drop, specific gravity of .60)
Nominal Length of Pipe in Feet
Iron Pipe
Size
Inches
10 20 30 40 50 60 70 80 90 100 125 150 175 200
3/4 278 190 152 130 115 105 96 90 84 79 72 64 59 55
1 520 350 285 245 215 195 180 170 160 150 130 120 110 100
1-1/4 1050 730 590 500 440 400 370 350 320 305 275 250 225 210
1-1/2 1600 1100 890 760 670 610 560 530 490 460 410 380 350 320
After determining the length of pipe required select the pipe size that will supply the
cubic feet per hour of gas required for the input rating of the Integrity V2532C.
The formula for figuring the cubic feet per hour required is:
CFH =
Gas Input of Integrity V2532C(BTU/HR)
Heating Value of Gas(BTU/FT
3
)
*Gas input requirement is on the water heater data plate
*The heating value of the gas can be obtained from the local Natural Gas Utility
Capacity Table for LP Gas
BTUH of undiluted liquified petroleum gases
(table assumes 11 inches of water column pressure at the inlet, .5 inch drop)
Nominal Length of Pipe in Feet
Iron Pipe
Size
Inches
10 20 30 40 50 60 70 80 90 100 125 150
1/2 275 189 152 129
3/4 567 393 315 267 237 217 196 185 173 162 146
1 1071 732 590 504 448 409 378 346 322 307 275 252
1-1/4 2205 1496 1212 1039 913 834 771 724 677 630 567 511
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INSTALLERS INSTALLATION INSTRUCTIONS
Gas Piping Notes
1) A manual gas control valve must be placed upon the gas inlet connection to the
Integrity V2532C before it is connected to the gas line. A union can be used on the
connection of the Integrity for the future servicing or disconnection of the unit.
2) Check the type of gas and the gas inlet pressure before connecting the Integrity
V2532C. If the Integrity V2532C is not of the gas type that the building is supplied
with, DO NOT connect the water heater. Contact the dealer for the proper unit to
match the gas type.
3) Minimum and Maximum Gas pressures are listed below:
* Minimum value is for input adjustment
Natural Gas: Minimum 7" WC Propane Gas: Minimum 10"WC
Maximum 10.5" WCMaximum 13.5" WC
WARNING: Conversion of this unit from natural gas to propane or propane to
natural gas CANNOT be done in the field.
4) 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. Caution: Since some leak test
solutions, including soap and water, may cause corrosion or stress cracking, the
piping must be rinsed with water after testing, unless it has been determined that the
leak solution is non-corrosive.
5) The Integrity V2532C must be leak tested before it is placed into operation.
6) The Integrity V2532C and its individual shut-off valve must be disconnected from the
gas supply piping system when pressure testing of the gas supply piping system at
test pressures equal to or greater than 1/2 psi.
7) Always use approved connectors to connect the unit to the gas line. Always purge the
gas line of any debris before connection to the water heater.
8) The Integrity V2532C must be isolated from the gas supply piping system by closing
it's individual manual shutoff valve during any pressure testing of the gas supply
piping system at test pressures less than 1/2 psi.
9) The Integrity V2532C's Installation location must provide adequate Combustion and
Ventilation airflow.
Model V2532FFUCwww.rinnai.us 2 8
INSTALLERS INSTALLATION INSTRUCTIONS
Water Piping Notes
1) A manual water control valve must be placed upon the water inlet connection to the Integrity
V2532C before it is connected to the water line. Unions may be used on both the hot/cold
water supply lines, for the future servicing or disconnection of the unit.
2) All soldering materials and piping must be compatible with potable water.
3) Purge the water line to remove from it all debris and air. Debris will damage the Integrity V2532C .
4) There is a wire mesh strainer on the Integrity V2532C's inlet to discourage the
introduction of debris to the unit. It will need to be cleaned periodically.
DO NOT operate unit without filter in place.
WARNING: DO NOT reverse the inlet and outlet (cold and hot water) connections on the
unit. This would cause the Integrity V2532C to operate dangerously or not at all.
INSTALLERS INSTALLATION INSTRUCTIONS
Pressure Relief Valve
1) ANSI code calls for the addition of an approved pressure relief valve to all water heating systems.
2) The pressure relief valve must meet the following criteria: The relief valve must comply with the standard
for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems ANSI Z21. 22 and/or
the standard CAN1-4.4 Temperature, Pressure, Temperature and Pressure Relief Valves and Vacuum
Relief Valves. This relief valve must be rated at 150 PSI of pressure.
3) The relief valve should be added to the hot water outlet line per manufacturer's
instructions. DO NOT place any other type valve or shut off device between the relief
valve and the hot water heater.
4) The discharge from the pressure relief valve should be piped to the ground or into a drain system to
prevent exposure or possible burn hazards to humans or other plant or animal life. Water discharged
from the relief valve could cause severe burns instantly, scalds and/or death.
5) Do not plug the relief valve and do not install any reducing fittings or other restrictions in the
relief line. The relief line should allow for complete drainage of the valve and the line.
6) If a relief valve discharges periodically, this may be due to thermal expansion in a
closed water supply system. Contact the water supplier or local plumbing inspector on
how to correct this situation. Do not plug the relief valve.
7) Pressure relief valve must be manually operated once a year to check for correct operation.
Caution: See Item 4 before manually operating relief valve.
8) Should overheating occur or the gas supply fail to shut off, turn off the manual gas
valve on the Integrity V2532C.
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INSTALLERS INSTALLATION INSTRUCTIONS
Electrical Connection Notes
WARNING: The Integrity V2532C must be electrically grounded in
accordance with local codes or in the absence of local
codes with the most recent edition of the National Electrical
Code, ANSl/NFPA 70. In Canada, all electrical wiring to the
Integrity V2532C should be in accordance with local codes
and the Canadian Electrical Code, CSA C22.1 Part1. Do not
rely on the gas or water piping to ground the metal parts of
the water heater.
CAUTION: Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and dangerous
operation. Verify correct operation after servicing.
1 The Integrity V2532C requires 120VAC/
60 HZ. Power from a properly grounded
circuit, GFl.
2 An on/off switch must be provided and
installed for the incoming 120VAC
power.
3 Wire the Integrity V2532C exactly as
shown in the wiring diagram on the next
page and on the inside of the cover
panel. The black wire is the hot leg
wire; the white wire is the neutral wire.
4 A green screw is provided in the
junction box for the grounding
connection.
Your disconnect switch should be a type
that is suitable for outdoor use. Check
National Electrical Codes for proper type
switch to use in your area.
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INSTALLERS INSTALLATION INSTRUCTIONS
Wiring Diagram
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INSTALLERS INSTALLATION INSTRUCTIONS
Wiring Diagram
Model V2532FFUCwww.rinnai.us 3 2
INSTALLERS INSTALLATION INSTRUCTIONS
Lighting the Unit
WARNING: If you do not follow these instructions exactly, a fire or
explosion may result causing property damage, personal injury or loss
of life.
1) This water heater does not have a pilot. It is equipped with a direct ignition
device which automatically lights the burner. DO NOT TRY TO LIGHT THE
BURNER BY HAND.
2) Before operating the Integrity V2532C smell all around the unit for gas. Be sure
to smell near the ground as leaking gas may settle there.
3) Turn the manual gas control valve on.
STOP!! READ THE SAFETY ISSUES ON PAGES 8
4) Turn on any hot water tap. The Integrity V2532C should light and begin heating
your water.
If the Integrity V2532C fails to light
1) DO NOT ATTEMPT TO LIGHT BY HAND.
2) Turn off the electrical power to the unit.
3) Turn off the manual gas control.
4) Wait 5 minutes, if you smell gas, go to a neighbor's house and call the gas
company or the fire department. If you do not smell gas, go to the next step.
5) Turn the manual gas control valve on.
6) Turn the electrical power to the unit on.
7) Turn on any hot water tap.
8) If the unit still fails to light, turn off the electricity and gas to the unit and call
Rinnai 1-800-621-9419.
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INSTALLERS INSTALLATION INSTRUCTIONS
Remote Control- General
The remote control for the Integrity V2532C allows the customer to control the
functions of the water heater and to diagnose certain fault conditions.
The Main Controller model MCC-45-4US is intended to be installed in the kitchen or
laundry area where the majority of the hot water is being used.
NOTE: The MCC-45-4US has a temperature setpoint range of 96-180°F.Other
setpoint tempertures must be set through dip switch settings, Contact
Rinnai at 800-621-9419 for dip switch settings.
Before installing the remote control, determine the most convenient location. When
deciding on the best location for the remote control, please consider the following
items:
1) Place the controller out of reach of small children or unauthorised users.
2) Avoid locations where the controller will become hot. (over a stove, near an oven
or a radiant heater.
3) Avoid direct sunlight. (The digital monitor can be difficult to read in direct
sunlight)
4) Avoid areas where the remote can be splashed with cooking water, oil or
sauce.
5) The remote control cable carries low voltage, 12VDC digital.
NOTE: Only one of controller can be connected to one Integrity V2532C water heater.
(i.e. Installations with two controllers will not function properly.)
Model V2532FFUCwww.rinnai.us 3 4
INSTALLERS INSTALLATION INSTRUCTIONS
Remote Control - Installation
1) Determine a suitable location for the
outline of remote
control.
securing screw
2) Make three holes on the wall as
wire hole
1 1/16 inches
shown.
securing screw
3) Run the cable between the control and
the Integrity V2532C or the control
21/32 inch
and the other control.
4) Remove the face plate from the remote control, using a screw driver.
5) Connect the cable to the remote control.
6) Mount the control to the wall using the holes drilled in step 2.
Note: If the cable cannot be run in the wall cavity, the plastic knockout should be
removed from the top or bottom of the control to allow flush mounting with the
wall
7) Disconnect the power from the Integrity V2532C.
3 1/4 inches
8) Remove the cover of the Integrity V2532C.
9) Remove the plastic cover from the PCB and electrical connections.
DO NOT ATTEMPT TO CONNECT THE REMOTE CONTROLS WITH THE POWER ON,
THERE'S 120 VOLT POTENTIAL, NEXT TO THE REMOTE CONTROL CONNECTIONS
INSIDE THE UNIT. All service and wiring should be performed by a certified installer.
10) Thread the cable through the
access hole at the base of the unit
and connect the wires to the
control terminals on the right hand
side bottom of the PCB.
11) Secure the control cable using the
clamp provided.
12) Replace plastic cover over PCB
and then replace the cover of the
Integrity V2532C.
Model V2532FFUC 3 5 www.rinnai.us
INSTALLERS INSTALLATION INSTRUCTIONS
Testing
1) Turn on the gas and water.
2) Check for water and gas leaks. Use soapy water to test for gas leaks.
3) Remove pressure test point screw, attach pressure gauge to test point.
4) Turn Power on.
5) Open any hot water tap fully.
6) Check test point or supply pressure in water columns per inch.
Manifold Pressure: Supply pressure:
Natural Gas 3.7" Hi. fire 0.77" Lo. fire Natural Gas Min. 7" Max. 10.5"
LPG4.2" Hi. fire 0.93" Lo. fireLPGMin. 10"Max. 13.5"
NOTE: The pressure may be low due to too little flow, too high an incoming temperature,
and/or undersized gas piping. Examine these areas before determining that the
pressure needs to be adjusted. Contact Rinnai before adjusting manifold
pressures at 1-800-621-9419. Failure to contact Rinnai, could void units
warranty.
7) If it is determined that the gas pressure needs adjusting, first check the in
coming pressure at the test point on the gas inlet. If it is correct follow the
adjusting procedure contained in the pouch of the unit EXACTLY. If in doubt
call Rinnai 1-800-621-9419.
The regulator is pre-set at the factory, it should not need resetting.
8) Turn the hot water off. Turn the power off. Remove the pressure guage and
replace the test point screw. Check for a gas leak around the test point
screw.
9) Replace the front cover.
10) Turn the power back on.
11) Check the operation of the unit. Check the operation of each of the remote
controls. Check the operation of the Power failure protection system.
12) Explain the proper operation of the Integrity V2532C to the customer.
Model V2532FFUCwww.rinnai.us 3 6
INSTALLERS INSTALLATION INSTRUCTIONS
Diagnostic Points
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INSTALLERS INSTALLATION INSTRUCTIONS
Schematic Diagram
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INSTALLERS INSTALLATION INSTRUCTIONS
Exploded View - Cabinet
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INSTALLERS INSTALLATION INSTRUCTIONS
Exploded View - Internals
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INSTALLERS INSTALLATION INSTRUCTIONS
Exploded View - Internals
Model V2532FFUC 4 1 www.rinnai.us
INSTALLERS INSTALLATION INSTRUCTIONS
Exploded View - Electrical
Model V2532FFUCwww.rinnai.us 4 2
INSTALLERS INSTALLATION INSTRUCTIONS
Parts List
Number Description Part Number Quantity
001 Casing Assembly U245-100-2 1
002 Wall Fitting Bracket-4 U242-111-5 2
003 Rubber Bushing U245-125 1
004 Connection Reinforcement Panel U245-120 1
005 Heat Protection Plate U245-107 1
006 Front Panel U245-110-2 1
007 Front Panel Packing BU195-167 1
008 Front Panel Packing Side AU115-163 2
100 Gas Control Assembly C36E-41-S 1
101 Screw AU39-965 2
102 Gas Connection (3/4NPT) CU195-1866 1
103 Burner Unit Assembly H73-110 1
104 Burner Case Front CH51-209 1
105 Burner Case Bottom Panel H73-112 1
106 Packing BH51-218 1
107 Lean and Rich B3A7-1 16
Bunsen Burner Assembly
108 Burner Case Back Panel CH51-221 1
109 Damper H73-115 1
110 Manifold Assembly -A (LPG) U245-200-A 1
110 Manifold Assembly -B (Nat. G) U245-200-B 1
111 Packing of Combustion Chamber AU155-207-2 1
112 Lower Packing of Combustion Chamber H73-214 1
113 Screw C10D-5 1
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INSTALLERS INSTALLATION INSTRUCTIONS
Parts List
Number Description Part Number Quantity
115 Combustion Chamber Front Plate U245-261 1
116 Electrode H73-120 1
117 Flame Rod AH41-216 1
118 Electrode Packing AH66-398 1
119 Electrode Holder AH66-393 1
120 Upper Packing of Combustion Chamber U245-262 1
121 Tube Joint U242-312 1
122 Pressure Tube AU161-665-C 1
125 Blower Motor All Assembly U245-550 1
126 Fan casing Assembly U245-555 1
127 Fan Connecting Bracket BH29-606 1
128 Fan Connecting Packing AU183-562 1
129 Blower Motor U245-560 1
130 Bell Mouth U245-558 1
131 Bellows Connecting Bracket/Intake Duct U245-566 1
132 Combustion Chamber Bracket U245-255 1
135 Air Inlet Box Assembly U245-400 1
136 Bellows Connecting Bracket/Fan U245-408 1
137 Bellows U245-409 1
138 Bellows Clamping Ring U245-567 1
139 Air Inlet Box Assembly U245-410 1
140 Exhaust Bracket U245-434 1
141 Exhaust Bracket Holder U245-435 2
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INSTALLERS INSTALLATION INSTRUCTIONS
Parts List
Number Description Part Number Quantity
142 Air Inlet Box Cover U245-419 1
145 Heat Exchanger Complete Assembly U245-690-C 1
400 Water Inlet (3/4NPT) H73-501-2 1
401 Water Flow Servo & Sensor Assembly M8E-6-5 1
402 Rectifier M8D1-15 1
403 By-pass Servo Assembly M6J-1-3 1
404 Stop Bracket AH69-310 2
405 Plug Band H73-512 1
406 Water Filter Assembly H73-511 1
407 Filter Plug H73-510 1
408 Hot Water Outlet (3/4NPT) U245-865-3 1
409 Stop Bracket AU162-1876 1
410 Plug Band Small AU103-413 1
411 Drain Valve AU142-444 1
700 PCB U245-500 1
701 Surge Protector BBF9-630 1
702 PCB Cover-Side U245-774 1
703 PCB Cover-Front BU168-707 1
704 Transformer Assembly ET-281 1
705 PCB Bracket U245-257 1
706 Ignitor EI-189 1
707 High Tension Cord BH38-710-240 1
708 Electrode Sleeve AU206-218 1
709 Thermistor BH45-650 2
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INSTALLERS INSTALLATION INSTRUCTIONS
Parts List
Number Description Part Number Quantity
710 Thermistor Clip Large CP-90172 1
711 Thermal Fuse Clip U217-676 5
712 Frost Sensing Switch U242-511 1
713 120V Anti-Frost Heater Assembly U245-620 1
714 Heater Connecting Harness U245-621 1
715 120V Valve Heater Assembly U245-622 1
716 Anti-Frost Heater Clip CF29-742 2
717 Anti-Frost Heater Clip A AU111-653 1
718 Anti-Frost Heater Clip AU100-721 1
719 Inlet Air Thermistor BH50-730-2 1
720 Power Supply Harness AU195-1876 1
721 Fuse Harness BU195-1630 1
722 100V Harness U245-601 1
723 Solenoid Valve Harness U245-602 1
724 Sensor Harness U245-603 1
725 Thermal Fuse Harness U245-610 1
726 Mold-Type Over Heat Switch BU129-824-2 1
800 Screw ZIHD0510UK 8
801 Screw ZAD0408UK 4
802 Washer AU33-184 4
803 Screw CP-21478-412 3
804 Screw U217-449 1
805 Screw ZAA0408UK 3
810 O-ring M10B-2-4 2
Model V2532FFUCwww.rinnai.us 4 6
INSTALLERS INSTALLATION INSTRUCTIONS
Parts List
Number Description Part Number Quantity
811 O-ring M10B-2-3 1
812 O-ring M10B-13-4 1
813 O-ring M10B-2-18 2
814 O-ring M10B-2-16 2
815 O-ring M10B-2-14 2
816 O-ring M10B-2-7 1
817 O-ring M10B-1-24 1
818 Packing C36E1-6 2
888 V2532FFUC Owners Manual U245-661 1
- Package Spec Sheet PWB-261 1
- Manual 3/4 gas control valve BU195-1865 1
- Commercial remote control kit MCC-45-4US 1
- Horizontal Discharge Adapter 50710327 -
- Wall Discharge Terminal 50223098B (for wall thicknesses from 4 to 20)
- Vertical Discharge Adapter 224064 -
- Roof Discharge Terminal 184118 -
- Condensate Collector 224069 -
- Roof Flashing - Flat Roof 146141 -
- Roof Flashing - 1/12 to 6/12 Pitch 50171948 -
- Roof Flashing - 6/12 to 12/12 Pitch 50171960 -
- Roof Flashing - 12/12 to 16/12 Pitch 50171953 -
- 10 Pipe Extension 224051 -
- 19.5 Pipe Extension 224052 -
- 39 Pipe Extension 224053 -
- 90 Degree Vent Pipe Elbow 224063 -
- 45 Degree Vent Pipe Elbow 224050 -
- Vent Pipe Clamp 169044 -
Model V2532FFUC 4 7 www.rinnai.us
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U245-661~04
Printed in Japan 2003.05
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