Rinnai RHFE-263FAII Quick start guide

─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.
WARNING: If the information in these instructions is not
followed exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
Owner’s Operation and Installation Manual for the
RHFE-263FAⅡ
Energysaver
Gas Direct Vent Wall Furnace
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
Table of Contents ...........2
Safety Information...........3
Operating Instructions.....6
Care and Maintenance....10
Fault Codes ....................13
Installation Instructions ...14
Consumer Support..........40

2Rinnai Corporation RHFE-263FAⅡ
This appliance may be installed in an aftermarket, permanently located, manufactured home
(USA only) or mobile home, where not prohibited by local codes.
This appliance is only for use with the type of gas indicated on the rating plate. This
appliance is not convertible for use with other gases, unless a certified kit is used.
Consumer Safety Information
Safety Definitions ........................................ 3
Safety Behaviors and Practices.................. 3
Safety Features........................................... 4
Specifications
Appliance Specifications ......................... 4, 5
Features...................................................... 5
Flue Manifolds............................................. 5
Operating Instructions
Getting to Know your RHFE-263FA ......... 6
Control Panel .............................................. 7
Operating Information
Turning ON and OFF............................. 8
Adjusting the temperature ..................... 8
Economy Mode...................................... 8
Function Lock ........................................ 9
Adding Water to the Humidifier.............. 9
Adjusting Air Flow Direction................... 9
Sensible Temperature Control............... 9
Care and Maintenance
Maintenance ........................................ 10
Care of Exterior.................................... 10
Snow Accumulation ............................. 10
Filters ................................................... 10
Visual Inspection of Flame .................. 10
Before Making a Service Call ....................11
Troubleshooting.........................................12
Fault Codes ...............................................13
Installation Instructions
General Instructions ..................................14
Gas Connection.........................................15
Clearances to Combustibles .....................15
Installation Parts .......................................16
Drilling Flue Hole .......................................17
Dimensions................................................17
Flue Terminal Clearances ...................18, 19
Flue Manifold Installation.....................20, 21
Connecting the Appliance .........................25
Operating Instructions ...............................26
Cut-Away Diagram ....................................27
Wiring Diagram..........................................28
Ladder Diagram.........................................29
Flow Diagram ............................................30
Parts List.............................................. 31-39
Extension Kit Installation
......................... 22-24
Consumer Support
Warranty Information.................................40
Limited Warranty ..................................40,41
This appliance may be installed as an OEM installation in a manufactured home (USA only)
or mobile home and must be installed in accordance with the manufacturer’s instructions and
the Manufactured Home construction and Safety Standard, Title 24 CFR, Part 3280, in the
United States, or the Mobile Home Standard, CAN/CSA Z240 MH Series, in Canada. This
appliance is only for use with types of gas indicated on the rating plate. A conversion kit is
supplied with the appliance.
Table of Contents

Safety Behavior and Practices
Do not block the warm air discharge. Do not allow
anyone to sleep directly in front of the appliance.
Due to high temperatures, the appliance should be
located out of traffic and away from furniture and
draperies.
Children and adults should be alerted to the
hazards of high surface temperature and should
stay away to avoid burns or clothing ignition.
Young children should be carefully supervised
when they are in the same room as the appliance.
Clothing or other flammable material should not be
placed on or near the appliance.
Any safety screen or guard removed for servicing
must be replaced prior to operating the appliance.
CAUTION
Keep the area around the appliance clear and free
from combustible materials, gasoline, and other
flammable vapors and liquids.
Never store liquid propane containers indoors.
Do not use this appliance if any part has been
under water. Immediately call a qualified service
technician to inspect the appliance and to replace
any part of the control system and any gas control
which has been under water.
This appliance is equipped with a three-prong plug
for your protection against shock hazard and
should be plugged directly into a properly grounded
three-prong receptacle. Do not cut or remove the
ground prong from this plug.
Any alteration to the appliance or its controls can
be dangerous.
Do not operate appliance with the panels removed,
cracked or broken. Replacement of the panels
should be done by a licensed or qualified service
person.
WARNING
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.
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.
CAUTION
WARNING
DANGER
Do not insert items into the louvers.
Do not spray aerosols near the appliance while it is
operating. Most aerosols contain butane gas which
is flammable.
Do not unplug the appliance while it is operating or
while the fans are on.
Rinnai Corporation RHFE-263FAⅡ3

4Rinnai Corporation RHFE-263FAⅡ
Application For manufactured home (USA only) or mobile home or residential installation
convertible for use with natural gas and liquefied petroleum gases (propane /
LPG) when provision is made for the simple conversionfrom one gas to the
other.
General Description Forced combustion, forced convection, flued gas furnace
Operation Push button electronic
Gas Connection 1/2 in female NPT
Gas Control Electronic
Burners Stainless steel Bunsen burner
Temperature Control Electronic thermostat
Ignition System Electronic spark ignition
Flue System The flue must be terminated to atmosphere with only flue components listed
with the appliance’s certification. Warranty will be voided if non listed
components are installed.
Humidifier Tray Capacity - 1.5 pints (700 cc)
Electrical Connection AC 120V, 60 Hz, 47 watts
Weight 37 lbs (17 kg)
Noise Level 31-38 dB
AFUE Rating Natural Gas: 80% Propane: 80%
Fan CFM output Low 96.4 - High 128.5
Specifications
Rinnai is continually updating and improving products. Therefore, specifications are subject to change without
prior notice.
The efficiency rating of this appliance is a product thermal efficiency rating determined under continuous operat-
ing conditions and was determined independently of any installed system.
Safety Features
Overheat: The appliance will automatically shut
down when the appliance exceeds a predetermined
temperature.
Flame Failure: The appliance will automatically
shut down if the burner flame is extinguished.
Power Failure: The appliance will cut off the gas if
it loses electrical power.
Power Surge Fuse: A glass fuse on the PC board
protects against overcurrent. If the fuse blows then
all indicator lamps will be off.
Spark Detector: The appliance automatically
shuts down if there is an abnormal spark at ignition.
Fusible Link: In case the overheat feature
prevents the temperature from rising then the
fusible link will break shutting off the appliance.
Appliance Specifications

5
Rinnai Corporation RHFE-263FAⅡ
Features
Clean Heating Forced Flue Type
Easy Operation One-Touch Ignition
Sensible Temperature Control Feature
Comfortable Room Temperature Control and
Display
Warm Air Outlet at Floor Level (keeps your feet
warm)
Function Lock
Room Temperature Setting Memory
Clean the Air Filter - Indicator Lamp
Energy Saving Economy Setting
Humidifier Tray
Air Flow Directional Louvers
Direct Vent Easily Installed
Proportional Heating Variable Capacity
Hush! Quiet Operation
Modern Design Minimizes Floor Space
Requirements
Failure Message Display
See the installation instructions for the parts list of
the vent kit.
TheAVent Kit is included with the appliance.
The following flue manifold sizes are available:
Name Kit No. fits walls
S Vent Kit FOT-150 3 - 4 1/2 in (75 - 115 mm)
A Vent Kit FOT-151 4 1/2 - 9 1/2 in (115 - 240 mm)
B Vent Kit FOT-152 9 1/2 - 15 3/4 in (240 - 400mm)
C Vent Kit FOT-153 15 3/4 - 23 5/8 in (400 - 600 mm)
D Vent Kit FOT-154 23 5/8 - 31 1/2 in (600 - 800 mm)
Flue Manifolds
Natural Gas Propane Gas
Minimum supply gas pressure 3.5 in (89 mm) W.C. 8.0 in (203 mm) W.C.
Maximum supply gas pressure 10.5 in (267 mm) W.C. 13.0 in (330 mm) W.C.
Manifold test pressure-High 2.3 in (58 mm) W.C. 3.7 in (94 mm) W.C.
Manifold test pressure-Low 0.6 in (16 mm) W.C 1.1 in (27 mm) W.C.
BTU/hour input Low 5500 - High 11000
BTU/hour output Low 4450 - High 8800
Low 5700 - High 11000
Low 4600 - High 8800
Appliance Specifications

6Rinnai Corporation RHFE-263FAⅡ
Getting to know your new RHFE-263FA
Operating Instructions

7
Rinnai Corporation RHFE-263FAⅡ
Control Panel
All buttons beep when operated.
RoomTemp
Set Temp
ON
ON/OFF
Filter
Function
Lock Economy
Temp
Control
FUNCTION
LOCK
Lamp is "green"
when this feature
is on.
FILTER LAMP
Flashes red when
filter is dirty.
OPERATION LAMP
This lamp turns
"green" when power
is on. Lamp will
change to "red"
when burner is on.
TEMPERATURE
BUTTONS
""adjust temp. to
lower setting.
""adjust temp. to
a higher setting.
ENERGY SAVING
BUTTON
Lamp is "green"
when this feature is
activated.
>
>
ON/OFF BUTTON
Easy operation
One touch ignition

8Rinnai Corporation RHFE-263FAⅡ
Operating Information
Turning the heater ON
When you press the ON/OFF button, the LED display
will illuminate, the combustion fan will begin to run,
and the spark will ignite the main burner.
This heater has an automatic ignition system. When
the main burner has lit, the combustion lamp will glow
red, and the spark will stop.
If ignition does not occur after 15 seconds, the
appliance will automatically turn off and a fault code
will be displayed on the control panel. This may
occur when using the appliance for the first time or if it
has not been used for a while. Try operating the
appliance again.
There may be a smell of burning dust or oil the first
time the heater is lit or when the heater has been out
of operation for a long time.
The appliance may make noises after ignition or when
it is turned off. This is normal and is due to the
thermal expansion or contraction of its components.
Adjusting the Temperature
The temperature setting and the room temperature
are indicated by the L.E.D. display on the control
panel. When the appliance is turned on the
temperature setting will be displayed for 10 seconds.
The display will then show the room temperature.
The default temperature setting is 72°F.
To change the temperature setting press one of the
temperature control buttons once. The “Set Temp”
should light up and the display will show the current
temperature setting. Continue to press the control
buttons until the desired temperature setting is
reached. After 10 seconds the display will return to
showing the room temperature.
The thermostat automatically modulates the burner
and the fan to maintain the temperature setting.
The temperature settings available are:
LO - burner is on minimum combustion
60°F - 80°F in two degree increments
HI - burner is on maximum combustion
Turning the heater OFF
Press the ON/OFF button. Do not
turn off by unplugging at the power
outlet.
The fan will continue to run for a short time to prevent
the internal components from overheating.
Economy Mode
Pressing the Economy button will cause the
appliance to go into Economy Mode and the
green lamp will glow. This results in the
temperature setting being reduced by 2°F,
30 minutes after the room temperature has
reached the temperature setting. After
another 30 minutes the temperature setting
is reduced another 2°F. This could result in
the temperature setting being reduced by a
maximum of 4°F. The intent of this mode is to save
energy.
ON
ON/OFF
Filter
ON/OFF
RoomTemp
Set Temp
Temp
Control

9
Rinnai Corporation RHFE-263FAⅡ
Operating Information
Function Lock
This feature locks the buttons to prevent
unintended operation.
Press the Function Lock button to activate
and the lamp will glow. Pressing and
holding the Function Lock button for two
seconds will disengage the function lock.
If the Function Lock is engaged while the
unit is operating, all buttons will be
disabled except for the ON/OFF button.
If the Function Lock is engaged while the unit is off,
then all buttons will be disabled.
Adjusting Air Flow Direction
The vertical louvers may be adjusted to move the air
flow more to the right or to the left.
Use a screw driver or similar object to bend each
louver to the desired position.
Do not bend repeatedly (no more than 5 times) or
else the louver will break.
The horizontal louver (which determines the vertical
air flow direction) is fixed and cannot be adjusted.
CAUTION
Do not adjust the air flow
louvers while warm air is
flowing.
Sensible Temperature Control
The sensible temperature control feature allows
comfortable heating which matches the conditions in
the room.
Based on the information collected by the room
temperature thermistor when the heating starts, the
heating capacity is automatically adjusted to achieve
a comfortable heating effect and to reach the
temperature setting quickly.
Adding Water to the Humidifier
Warm air is humidified when it passes over the water
in the tray.
To fill the tray, remove the bottom trim panel below
the louvers by pulling on both sides. Pull the tray out
and fill with water. Push the tray back in and attach
the bottom trim panel. Do not operate the appliance
unless the humidifier tray is installed.
During operation a small amount of condensation is
produced in the flue system and drains into the
humidifier tray.
CAUTION
Do not remove the bottom
trim panel or the humidifier
tray while warm air is
flowing.
Function
Lock

10 Rinnai Corporation RHFE-263FAⅡ
Care and Maintenance
Filters
Dirty filters reduce the air flow and the appliance’s
ability to produce heat. The filters should be cleaned
frequently during the heating season. If the filters
become blocked the filter indicator lamp will flash red.
Eventually the appliance will turn off and display fault
code 14 on the control panel display.
To clean the filters, the
appliance should be OFF
and cool. Remove the
filter and clean it using a
soft dry cloth or vacuum.
If the filter is greasy wash
with warm soapy water,
rinse, and dry
completely.
Maintenance
Repairs should be performed by a qualified service
technician. The appliance should be inspected
annually by a qualified service technician. More
frequent cleaning may be required due to excessive
lint from carpeting, bedding material, etc. It is
imperative that control compartments, burners, and
circulating air passage ways of the appliance be kept
clean.
Any screen or guard removed for servicing the
appliance must be replaced prior to operating the
appliance. Clean as follows:
1. Turn heat off. Allow to cool for one hour.
2. Remove the front panel by removing six screws.
3. Use pressurized air to remove dust from the main
burner, heat exchanger, and fan blades.
4. Use soft dry cloth to wipe cabinet.
Do not use wet cloth or spray cleaners on the burner.
The flue should be inspected annually for blockages
or damage.
Motors are permanently lubricated and do not need
periodic lubrication. Keep fan and motor free of dust
and dirt by cleaning annually.
Verify proper operation after servicing.
Visual Inspection
of Flame
Check that the burner flames are operating normally.
The flame can be seen through the circular window
through the louvers.
When operating normally the burner flame should
appear as long, clear, blue, stable, streaks. Yellow
flames or an orange color is abnormal and
maintenance is required.
NORMAL
ABNORMAL
Care of Exterior
Dampen soft cloth with warm water. Wring water out
well and wipe the unit.
Do not use volatile substances such as benzene or
thinners. They cause fading of the paint and
deformation of the resin.
Snow Accumulation
Keep the area around flue terminal free of snow and
ice. The appliance will not function properly if the
intake air or exhaust is impeded by obstructions.
Flame Rod
Yellow flames or
orange color
Long, clear, blue,
stable flames
Flame Rod
AIR FILTER

11
Rinnai Corporation RHFE-263FAⅡ
Before Making a Service Call
Before making a service call please check the following:
■At Ignition:
Heater does not operate.
Warm air does not flow when the burner
lights.
Smoke or strange smells are produced
on the first trial light up after installation.
Sharp clicking noises at ignition, or when
unit cuts down on the thermostat, or goes
out.
■During Combustion:
Clunking noise when the thermostat
operates.
Unit is not heating room.
Air filter is blocked or the louvers are
blocked or obstructed.
Heater will not re-ignite after overheating.
■When the unit is turned off.
Convection fan continues to run after
turning OFF.
■Other Points:
Steam is discharged from the flue terminal.
Unit cuts off without apparent reason.
Power Failure.
Is the heater plugged in?
Have the fuses or breaker blown at the fuse box / breaker panel?
Is there a power failure?
Is the air filter blocked?
Is anything blocking the outlet for the hot air?
Is the flue blocked?
The fan is started automatically after a short delay.
This is to allow the heat exchanger to warm up, helping to avoid cold draughts.
This is caused by grease or oil and dust on the heat exchanger and will stop
after a short time.
This is simply expansion noise from the heat exchanger.
This is the sound of the solenoid gas valves opening and closing.
Is the air filter blocked?
Is the set temperature high enough?
Is the warm air outlet blocked by anything?
Are the doors and windows of the room closed?
Was the appliance correctly sized for the space?
Allow heater to cool, clean air filter, operate again.
Even after unit has cooled down, the heater does not ignite again. Repair is
necessary.
Contact a qualified / authorized service provider.
This is to remove the residual heat from the heat exchanger. The fan will stop
when the heater cools down.
High efficiency appliances tend to discharge water vapor on cold days. This
is normal.
Check whether filters are blocked. Dirty filters will cause the heater to overheat.
Switch OFF, then ON again when power is restored to re-set controls.

12 Rinnai Corporation RHFE-263FAⅡ
Troubleshooting
Problem
Remedy
Cause
Not Plugged In
Power Failure
(Initial Installation)
Air In Gas Pipe
Gas Filter Blocked
Miss Ignition
Flue terminal obstructed
Flue manifold not connected
Louver obstructed
Air filter blocked
Gas Escape
Function Lock Set
Gas turned off at meter, tank,
or valve.
Plug In
Push On/Off button to attempt
restart after power is restored.
Purge air
(Installer)
Service Call
Service Call
Clear obstruction
Service Call
Clear obstruction
Clean filter
Service Call
Cancel Function Lock
Turn gas on
No ON indicator Burner doesn’t ignite
Unusual combustion
Combustion stops during operation Smell of gas
Noisy ignition
Takes too long to warm the room

Fault Codes
If there is a malfunction the appliance may shut down
as a safety precaution and display a fault code to
assist in diagnosing the problem. The fault code will
flash in the display on the control panel. When
making a service call, this code will assist with
diagnosing the fault.
You may be able to clear the fault code by turning the
heater off and then on again. If the fault code remains
or returns on the next operation, contact Rinnai or
your nearest service agent and arrange for a service
call.
Rinnai Corporation RHFE-263FAⅡ13
CODE DISPLAYED FAULT REMEDY
Ignition failure
Flame failure
Overheat
Room overheat
Room Temperature
Sensor faulty
Overheat Temperature
Sensor faulty
Sparker failure
Combustion fan failure
Faulty ON/OFF switch
Faulty solenoids
Faulty Flame Rod
Communication Error
Check gas is turned ON.
Service call if repeated.
Check gas is turned ON.
Service call if repeated.
Clean filter
Service call if repeated. [1]
Service call.
Service call.
Service call.
Service call.
Service call.
Service call.
Service call.
Turn heater OFF,
then ON again.
Lower room temperature
to less than 104°F(40°C).
Flue block Check around flue terminal [2]
11
12
14
16
31
32
33
34
53
61
70
71
72
73
49
99
Sensor breakdown Service Call.
[1] Remove any obstructions. T e flue needs to be kept clear to expel ex aust gases. If t e appliance fails to
operate contact a qualified service agency.
[2] If t e fusible link needs replacement, it must be done by a qualified service agency. In addition, t e cause of
t e over eat needs to be determined. T e fusible link is a one use safety device t at breaks to s ut off t e
appliance.

Installation Instructions
A qualified service technician should install the
appliance and inspect it before use.
If you move, check the gas type in your new area.
The local gas authority will be able to advise on
local regulations.
The installation must conform with local codes or,
in the absence of local codes, with the National
Fuel Gas Code, ANSI Z223.1/NFPA 54, or the
Natural Gas and Propane Installation Code, CSA
B149.1.
A manufactured home (USA only) or mobile home
OEM installation must conform with the
Manufactured Home Construction and Safety
Standard, Title 24 CFR, Part 3280, or, when such a
standard is not applicable, the standard for
Manufactured Home Installations, ANSI/NCSBCS
A225.1, or the standard for Gas Equipped
Recreational Vehicles and Mobile Housing, CSA
Z240.4.
The appliance, when installed, must be electrically
grounded in accordance with local codes or, in the
absence of local codes, with the National Electrical
Code, ANSI/NFPA 70, or the Canadian Electrical
Code, CSA C22.1.
Appliance input ratings are based on sea level
operation and need not be changed for operation
up to 2000 ft (609.9 m) elevation. For operation at
elevations above 2000 ft (609.9m), manufactured
to specified deration conditions for Canada and the
United States. Refer to the Conversion Manual for
high altitude installations.
The appliance and its appliance main gas valve
must be disconnected from the gas supply piping
system during any pressure testing of that system
at test pressures in excess of 1/2 psi (3.5 kPa).
The appliance must be isolated from the gas supply
piping system by closing its equipment shutoff
valve during any pressure testing of the gas supply
piping system at test pressures equal to or less
than 1/2 psi (3.5 kPa).
If the flooring is carpet, tile, or other combustible
material other than wood, then the appliance must
be installed on a metal or wood panel extending the
full width and depth of the appliance.
This appliance discharges a large volume of warm
air next to the floor. Any particles in the air such as
cigarette smoke could cause discoloration in nylon
carpets containing dyes or vinyl surfaces.
This appliance is not designed to built in.
This appliance is only for use with the type of gas
indicated on the rating plate. This appliance is not
convertible for use with other gases unless a
certified kit is used. If a conversion of the unit is
needed, conversions must be performed by a
qualified service provider at the owner’s expense.
This appliance must not be connected to a chimney
flue serving a separate solid-fuel burning appliance.
Rinnai suggests that a dedicated electrical circuit
with a 120VAC, 60 hz, 10 amp power source be
used.
Two 1/8 in test plugs are provided for testing of
manifold differential pressure. They are located on
the modulating gas valve and on the burner
manifold.
The appliance should be correctly sized for the
space it required to heat.
Follow the installations instructions and those in
Care and Maintenance for adequate combustion
and ventilation air.
The flow of combustion and ventilation air shall not
be obstructed.
Clearances to access the appliance during
servicing are 2 inches (50 mm) from the sides, 40
inches (1 m) from the front, and 9 inches (225 mm)
from the top.
General Instructions
WARNING
Do not use substitute materials.
Use only parts certified with the appliance.
Rinnai Corporation RHFE-263FAⅡ
14

Gas Connection
The gas supply line shall be gas tight, sized and so
installed as to provide a supply of a gas sufficient to
meet the maximum demand of the heater without
loss of pressure.
A shut off valve and appliance connector valve
should be installed in the upstream of the gas line
to permit servicing.
Flexible pipe and any appliance connector valve
used for gas piping shall be types approved by
nationally recognized agencies.
Any compound used on the threaded joint of the
gas piping shall be a type which resists the action
of liquefied petroleum gas (propane / LPG).
Check the gas supply pressure immediately
upstream at a location provided by the gas
company. Supplied gas pressure must be within
the limits shown in the Specifications section.
After completion of gas pipe connections all joints
including the heater must be checked for gas
tightness by means of leak detector solution, soap
and water, or an equivalent nonflammable solution,
as applicable. (Since some leak test solutions,
including soap and water, may cause corrosion or
stress cracking, the piping shall be rinsed with
water after testing, unless it has been determined
that the leak test solution is non-corrosive.)
Refer to an approved pipe sizing chart if in doubt
about the size of the gas line.
Install manual gas cut-off valve so that it can be
accessed for easy operation. Do not conceal
manual cut-off valve behind back spacer.
Clearances to Combustibles
When determining where to install the appliance
the clearances to combustibles shown in the
figure must be followed. Also refer to the Safety
Behaviors an
to combustibles from the top is zero.
d Practices section. The clearance
Rinnai Corporation RHFE-263FAⅡ15

16 Rinnai Corporation RHFE-263FAⅡ
The following items are included with the appliance.
Owner’s Operation and Installation Manual
Conversion Manual
Conversion Kit
A Vent Kit
Manual valve set, backspacers, screws, pipe stoppers, and hardware listed below
Installation Parts
Flue Manifold .......................1 Spare rubber seal ...................1
(‘A’Flue units only)
(For weatherboard installations)
Back Spacer
Set 1
1
1
2
11
3
10
2
1
1
1
Insulation
Clip
Plastic tie
for air inlet
Clamp
Wall Bracket
Spacer
Bracket
Pipe Stopper
Manual Valve
Set
Screw
Screw
Screw
Owner’s Manual
Conversion Manual
(For Back Spacer)
(For Flue Manifold)
(For Clamp)
5Screw
(For Wall Bracket
and Flue manifold)

17
Rinnai Corporation RHFE-263FAⅡ
Drilling Flue Hole
Ensure that there are no gas or water lines, or
electrical circuits in the wall location where the flue
hole is to be drilled. Drill the flue hole using a 3 1/8
inch (80 mm) drill. The center of the hole must be
located exactly at the specified point.
See diagram. For weatherboard walls, drill through
the center of the weatherboard from the outside first
and then through the plasterboard. A template is
provided.
Dimensions
3 7/16" (88)
4 5/16"
(109.5)
4 3/4"
(121)
WALL OPENING
POSITION
GAS CONNECTION
26 5/8" (676.5)
3 1/8"
(φ80)
10 3/8" (264.5)
24 1/4" (616)
16 3/4" (425)
FLUE
ELBOW 4 1/2"
(114)
6 1/2" (165)
3 3/8" (85)
1 5/8" (41.2)
1" (25)
12 1/16" (306.5)
4 9/16" (116.5)
GAS CONNECTION
4 5/16"
(109.5)
WALL OPENING
POSITION
3 1/8"
(φ80)
10 3/8" (264.5)
FLUE
ELBOW
4 1/2"
(114)
inches (mm)

18 Rinnai Corporation RHFE-263FAⅡ
Flue Terminal Clearances

19
Rinnai Corporation RHFE-263FAⅡ
Ref Description Canadian Installations US Installations
A Clearance above grade, veranda, porch,
deck, or balcony 12 inches (30 cm) 12 inches (30 cm)
B Clearance to window or door that may be
opened 12 inches (30 cm) 9 inches (23 cm)
C Clearance to permanently closed window * *
*D
Vertical clearance to ventilated soffit, located above the terminal within a horizontal distance of 2 feet (61 cm) from the center line of the terminal
*
E Clearance to unventilated soffit * *
F Clearance to outside corner * *
G Clearance to inside corner 20 inches (50 cm) 20 inches (50 cm)
H Clearance to each side of center line
extended above meter/regulator assembly
3 feet (91 cm) within a
height 15 feet (4.5 m)
above the meter/
regulator assembly
*
I Clearance to service regulator vent outlet 3 feet (91 cm) *
*
J
Clearance to nonmechanical air supply inlet to building or the combustion air inlet to any other appliance
12 inches (30 cm) 9 inches (23 cm)
K Clearance to a mechanical air supply inlet 6 feet (1.83 m)
3 feet (91 cm) above if
within 10 feet (3 m)
horizontally
L Clearance above paved sidewalk or
paved driveway located on public property 7 feet (2.13 m)①
M Clearance under veranda, porch, deck, or
balcony
12 inches (30 cm) to
non-flammables②
24 inches (60 cm) to
flammables②
12 inches (30 cm) to
non-flammables②
24 inches (60 cm) to
flammables②
Flue Terminal Clearances
A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings. Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor. For clearances not specified in ANSI Z223.1/NFPA 54 or CSA
B149.1, clearances are in accordance with local installation codes and the requirements of the gas supplier.
Clearance to opposite
wall is 24 inches (60 cm) for Canada and US.
① ② ＊

20 Rinnai Corporation RHFE-263FAⅡ
Flue Manifold Installation
1. Disassemble the flue manifold
The flue consists of 3 parts:
sleeve
inside connection
outside terminal
Disassemble the flue manifold by first pulling
out the inside connection. To remove the
outer terminal pull and release the two
internal ties and then pull out the outer
terminal.
Clearance to combustibles for the sleeve and
flanges is zero inches.
2. Adjust the sleeve length
Measure wall thickness through previously
drilled 3 1/8 inch (80 mm) hole.
The end of the sleeve should protrude 3/16 -
3/8 inch (5-10 mm) from the outside wall.
The sleeve is threaded for adjustment. Adjust
the sleeve length to wall thickness plus 3/16 -
3/8 inch (5-10 mm).
NOTE: Do not extend beyond the red line.
For other than the S type flue manifold, if a
shorter length is necessary an extension can
be removed. Cut the plastic and remove the
extension.
The flue manifold must exhaust to the outside. Do
not exhaust into other rooms.
The flue is not designed to be positioned under
floors or below the heater.
The termination cannot be vertical.
This appliance can only be used with one of the
five types of Rinnai flue kits. The flue kits and their
dimensions are listed in the Specifications section.
Refer to the Flue Terminal Clearances section.
3 screws
sleeve should extend
3/16 - 3/8 in (5-10 mm)
3. Attach the sleeve
Attach to the inside wall using 3 screws
arranging the flange so that the marking
TOP is at the top.
The flange is offset 2 to allow the
condensate drain to the outside.
Inside Connection
Sleeve
Terminal
Remove extension
if necessary