Rinnai 4500 Quick start guide

Owner’s Operation and Installation Manual for the
Rinnai Outdoor Fireplace
4500 Series
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
— 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 death.
Table of Contents...........2
Safety Information ..........2
Operating Instructions ....8
Care and Maintenance...9
Installation Instructions...10
Parts List ........................21
Consumer Support .........26
French Version...............28
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause
injury or property damage. Read the installation, operating, and maintenance
instructions thoroughly before installing or servicing this equipment.
WARNING: For Outdoor Use Only

2 Rinnai Corporation ROF4500
Consumer Safety Information
Safety Definitions........................................2
Safety Behaviors and Practices..................3
Safety Features...........................................3
Specifications.................................................4
Troubleshooting .........................................4
Dimensions .................................................5
Assembly Specifications.............................6
Installation Applications ..............................7
Operating Instructions
Before Starting the Appliance ....................8
Operating the Appliance .............................8
Maintenance................................................9
Installation Instructions
General Instructions.................................. 10
Before Installation..................................... 10
LPG Cylinder Enclosure........................... 11
Definition of an Outdoor Area................... 12
Clearances................................................ 13
Installing Freestanding Unit or Enclosed
Masonry Applications................................ 14
Installing Body Assembly in an Open
1-sided or 2-sided Installation.............. 15-17
Installing Burn Media................................ 18
Complete Gas Connection ....................... 19
Guidelines for Cladding and Finishes....... 20
Parts List..................................................21-25
Consumer Support ................................ 26, 27
Table of Contents
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

Rinnai Corporation ROF4500 3
Safety Behavior and Practices
CAUTION
• Do not block the discharge of
warm air from the fireplace.
• Children and adults should be
alerted to the hazards of high
temperatures and should stay
away to avoid burns or clothing
ignition. Hand or body contact
with high temperature areas of
the appliance must be
avoided. Do not allow anyone
to sit or lean against the
appliance.
• Young children should be
carefully supervised when they
are near the appliance.
• Clothing or other flammable
material should not be placed
on or near the appliance.
• Do not spray aerosols near the
appliance while it is operating.
Most aerosols contain butane
gas which is flammable.
• An LP cylinder not connected
for use shall not be stored in
the vicinity of this appliance.
• Do not insert items into the
fireplace.
• Do not burn any solid fuels in
the fireplace. Use only natural
gas or propane gas.
• This appliance must not be
used for any other purpose
than heating. Do not use this
appliance to prepare food.
• The appliance (including
burner assembly if used
alone), must be secured into or
onto a permanent fixture.
• Any materials or objects that
are near this appliance when it
is in operation may be
subjected to radiant heat and
could sustain damage.
• Any guard or other protective
device removed for servicing
the appliance must be
replaced prior to operating the
appliance.
• Keep the area around the
appliance clear and free from
combustible materials,
gasoline, and other flammable
vapors and liquids.
• Installation and servicing
should be performed by a
licensed or qualified service
technician.
WARNING
• 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.
Safety Features
• Burner lights with a low gas rate (lights to pilot).
• Flame Failure: The appliance will automatically shut
down if the burner flame is extinguished.

4 Rinnai Corporation ROF4500
Application As a permanently fixed heating appliance in outdoor areas only. Complies with CSA
International Requirement 4.96 U.S. for Outdoor Gas Fireplaces.
General Description Open fronted radiant/convector outdoor gas fireplace with manual control.
Available in 3 versions:
• Freestanding table top unit, ROF4500
• Open 1-sided cabinet, ROF4501 (with optional glass bi-fold doors)
• Open 2-sided cabinet, ROF4502 (see-through) (with optional glass bi-fold doors)
Gas Input Propane (LPG): 30,500 - 41,500 BTU/hr; Natural Gas (NG): 25,000 - 45,000 BTU/hr
Maximum Inlet Gas Supply Pressure: LPG 13” W.C. / NG 10.5” W.C.
Burner 304 Stainless Steel Tube
Data Plate Located on swing tag below appliance
Gas Type Propane (LPG); convertible to Natural Gas with included conversion kit
Gas Connections 3/8 SAE 45º Flare Fitting with 5/8 UNF Thread
Gas Control Gas control valve consisting of an inlet connection, Piezo ignitor, thermocouple flame
failure and manual control knob.
Ignition Method Intermittent pilot
Pilot SIT single orifice pilot assembly with fixed aeration and replaceable fixed pilot orifice for
conversion to natural gas. Pilot assembly also contains a pilot ignition electrode and
thermocouple for flame failure.
Piping Burner is supplied through an aluminum pipe from the gas control to the burner orifice
block.
Pilot burner is supplied gas by an aluminum pipe directly from the gas control.
Pressure Test Point Incorporated into the main burner orifice block measuring burner pressure.
Regulator Pressure regulator with replaceable spring for conversion to natural gas
Warm Air Outlet Top louver discharge
Weight Burner Assembly: 44 lb (20 kg)
Body Assembly: 66 lb (30 kg)
Burner and Body Assembly: 110 lb (50 kg)
Specifications
Rinnai is continually updating and improving products. Therefore, specifications are subject to change without
prior notice.
Troubleshooting
Problem Cause Solution
No gas Check that the gas is turned on
If using a tank or bottle, check that it is not empty.
Air in gas pipe Repeat the lighting sequence multiple times until the
gas has replaced the air in the hose or pipe.
Popping sound Unburnt gas coming through No action, normal operation
Burner does not
immediately stop burning
when unit is turned off
Residue of gas in pumice
continues to burn No action, normal operation
Unit will not light

Rinnai Corporation ROF4500 5
Dimensions
Burner Dimensions
Body Dimensions
With Fascia and Doors Dimensions
42.52 in (1080 mm)
3.00 in (76 mm)
4.76 in
(121 mm)
15.75 in (400 mm)
46.06 in (1170 mm) 18.50 in (470 mm)
21.65 in (550 mm)
47.44 in (1205 mm)
19.21 in (488 mm) for 1-side
d
Frame is 1.57 in (40 mm) wide, 0.67 in (17 mm) deep 19.88 in (505 mm) for 2-side
d
23.03 (585)

6 Rinnai Corporation ROF4500
Assembly Specifications
Burner Assembly
The major component of the Rinnai outdoor fireplace is the burner
assembly. This consists of a tube burner with an open tray filled with
pumice and stones.
A SIT pilot burner is positioned along the tube burner to ensure
positive lighting and is covered by a perforated guard to prevent the
pumice from blocking the burner.
The gas control, pressure regulator, and spark ignition system are
positioned at the right end of the tube burner.
The complete assembly is fitted with a stainless steel 404 body
including a weather cover. The cover is placed over the burner for
protection from wind and rain when the unit is not in use.
Body Assembly
The outer body assembly is included with the single sided (ROF4501)
and see-through (ROF4502) models. One of these models must be
used if installation is into a combustible enclosure.
It consists of a construction with an open front (pictured) or with open
front and back (see-through).
Body Assembly with Glass Doors
The body assembly has optional tempered glass, double bi-fold doors
to reduce the effects of wind or rain on the burner. The appliance can
operate with the doors open or closed.
The appliance operates with the bi-fold doors with air being drawn into
the combustion chamber through the lower half of the open front and
expelled out the top or through the top louvers of the glass doors.
Steel Frame Consoles
Steel frame console modules are available which can reduce installation time and provide design flexibility for any
outdoor area. These console modules are available as accessory items. Please refer to the steel frame modular
system installation manual for additional instructions.
1
1
2
Base and Door Modules
1. Base Module (R2632)
2. Door Module (R2631)
1
1
33
Base and Spacer Modules
1. Base Module (R2632)
3. Spacer Module (R2633)

Rinnai Corporation ROF4500 7
Installation Applications
[1] If attaching the door assembly you need to select either the 1 or 2-sided burner/body assembly.
[2] Suitable for installation using cladding and finishes that can withstand temperatures up to 302° F (150° C).
Sold as 1 set. This assembly is comprised of tempered glass double bi-fold doors with stainless steel
surrounds and fixings.
[3] Door assembly attaches to the cabinet frame of the appliance, and so is only suitable for installations where a
cabinet (or body assembly) has been installed.
Sample Installations
Components Needed Freestanding
(ROF4500) Open 1-Sided Cabinet (ROF4501) Open 2-Sided Cabinet (ROF4502) Non-combustible enclosed masonry
Burner Assembly LPG
(ROF4500) 

1-Sided Burner/Body
Assembly LPG
(ROF4501)  [1]
2-Sided Burner/Body
Assembly LPG
(ROF4502)
 [1]
Glass Bi-fold Door
Assembly (R2612) [2]  [3]
LPG-NG Conversion
Kit (R2613)
(included with
appliance and available
for purchase)

Console Door Module
(R2631) 
Console Base Module
(R2632) 
Console Spacer
Module (R2633) 
Optional Accessories
Fireglass Burn Media
(R2621) 
Driftwood Burn Media
(R2620) 
OR
OR

8 Rinnai Corporation ROF4500
Operating Instructions
Before Starting the Appliance
• Remove the weather cover.
• Inspect the burner before each use of the appliance. Ensure that no debris such as leaves or other objects
have entered or are on the appliance. If the burner is damaged, it must be replaced with a Rinnai authorized
replacement burner prior to operating the appliance.
• Completely open the door (if present).
• Inspect the gas supply hose before each use of the appliance. If there is evidence of abrasion or wear, or if
the hose is damaged, it must be replaced with a Rinnai authorized replacement hose prior to operating the
appliance.
Operating the Appliance
1. Turn on the gas supply.
2. Press the control knob and slowly turn counterclockwise until you
hear a click. This step is “lighting to pilot”. Look for the pilot flame.
3. Hold down for an additional 5 seconds to activate the flame and
then release.
NOTE: Steps 1 and 2 may need to be repeated several times to
ignite the fire. This will vary according to the gas being used.
4. Once the heater is on, turn the knob to the high setting for a period
of time in order to establish a flame pattern. You can modulate the
flame by adjusting between the high and low settings.
5. To turn off, press the control knob and turn clockwise to the OFF
position. When shutting down the appliance it is important to cover
the appliance with the weather cover after it has cooled down.
6. Turn off the gas supply when the appliance is not in use.
OFF Position
Pilot Position - To
start, push and turn
slowly to this position
until you hear a click.
High Setting
Low Setting
Check for pilot flame after turning the
knob to the pilot position
WARNING Improper lighting may lead to a gas build up
which if ignited could cause serious injury. TOP VIEW

Rinnai Corporation ROF4500 9
Maintenance
For safe operation of the appliance it is imperative that
the control compartment (pilot cover), burner and
circulating air passageways are kept clean. To keep the
gas orifices from getting clogged, ensure that debris is
kept clear from the fire, and that the burn media is
installed correctly.
The appliance should be inspected before use and at
least annually by a qualified service technician. More
frequent cleaning may be required.
Regular servicing is not covered by Rinnai’s warranty.
All parts of the heater can be cleaned using a soft damp
cloth and mild detergent. Do not use solvents and do
not attempt to clean the appliance while it is hot or
operating.
For salty environments, clean regularly using water to
prevent corrosion.
For black soot on stones or exhaust gas staining above
the appliance, clean with water.
Verify proper operation after servicing.
Visual Inspection of Flame
The Rinnai outdoor fireplace has a distinct flame
pattern. This should look the same every time after
an initial warm up period of approximately 30 minutes.
Abnormal flame pattern can indicate a problem with
your appliance. Blocked gas orifices or burn media
that have shifted can produce an abnormal flame
pattern. There are some warning signs that could
indicate a problem.
• Unusual smell from the appliance.
• Continued difficulty or delay in establishing a
flame.
• Flame appears either very short or very long.
• Flame only burns part way across the burner.
• Soot building up on the inside of the glass door.
NORMAL
ABNORMAL
Weather Protection
Outdoor fires are not fully weatherproof and should not
be directly exposed to rain. A weather cover has been
provided with the appliance to protect the burner and
burn media when not in use. Remove the cover before
starting the appliance.
Maintenance Task Procedure
Inspect gas control assembly Inspect components for proper operation and
leaks. Vacuum compartment.
Clean Pilot / Burner Remove any surface build-upon the pilot and
burner assembly.
Operate appliance Check for proper operation and visually inspect
the flame for signs of problems.

10 Rinnai Corporation ROF4500
Installation Instructions
General Instructions
A qualified service technician should install the
appliance and inspect it before use.
The installation must conform with local codes or, in
the absence of local codes, with the National Fuel Gas
Code, ANSI Z223.1.
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).
Refer to the conversion manual for converting the
appliance to use natural gas.
Do not install this appliance indoors.
WARNING
Do not use substitute materials.
Use only parts certified with the appliance.
Before Installation
Check for Damage Check for damage. Do not install any damaged items. Check that you have all the
components you require.
Read Instructions Before using the appliance please read the entire manual to ensure correct use. Failure
to follow these instructions could cause a malfunction of the appliance. This could result
in death, serious injury and /or property damage. Failure to follow these instructions may
also void your warranty.
Appliance Location Choose a location that meets the clearances to combustibles and non-combustibles.
Avoid locating the appliance near trees or bushes. Take into account how the appliance
is to be supplied with gas.
ROF4500 ROF4501 ROF4502
R2615 Frame Trim SS 40 mm NA 1 2
R2629 Metal Lintel Kit - includes 11254 lintel x 1 pc;
11255 lintel end x 2 pcs; 9154 screw x 8 pcs NA 1 2
309000012 Installation Spacer Bracket (angle bracket) NA 4 4
R2614 Conversion Kit LPG-NG 1 1 1
309000013 Pumice 4 kg bag 1 1 1
309000024 Quartz Small Crushed 4 kg 1 1 1
309000025 Quartz Large Rumbled 14 pieces 1 1 1
309000016 Weather Shield Assembly 1 1 1
11320 Owner’s Operation and Installation Manual 1 1 1
Items included in carton

Rinnai Corporation ROF4500 11
LPG Cylinder Enclosure
Enclosures for LP-gas supply cylinders shall be ventilated by openings at the level of the cylinder valve and at
floor level. This shall be accomplished by one of the following:
A. One side of the enclosure shall be completely open; or
B. For an enclosure having four sides, a top and a bottom:
1. At least two ventilation openings at cylinder valve level shall be provided in the side wall, equally sized,
spaced at 180 degrees, and unobstructed. Each opening shall have a total free area of not less than 1/2
square inch per pound (3.2 sq.cm/kg) of stored fuel capacity and not less than a total free area of 10
square inches (64.5 sq. cm).
2. Ventilation openings shall be provided at floor level and shall have a total free area of not less than 1/2
square inch per pound (3.2 s.cm/kg) of stored fuel capacity and not less than a total free area of 10
square inches (64.5 sq.cm). If ventilation openings at floor level are in a side wall, there shall be at least
two openings. The bottom of the openings shall be at floor level and the upper edge no more than 5
inches (127 mm) above the floor. The openings shall be equally sized, spaced at 180 degrees and
unobstructed.
3. Every opening shall have minimum dimensions so as to permit the entrance of a 1/8 inch (3.2 mm)
diameter rod.
Cylinder valves shall be readily accessible for hand operation. A door on the enclosure to gain access to the
cylinder valves is acceptable, provided it is non-locking and can be opened without the use of tools.
There shall be minimum clearance of 2 inches (50.8 mm) between the lower surface of the floor of the LP-gas
supply cylinder enclosure and the ground.
Minimum of 5” (12.7 cm) from
floor to top of bottom opening
Minimum of 2” (5 cm) from
floor bottom to ground level
Top openings at valve level
Each opening shall have a total free area of not less
than 1/2 square inch per pound (3.2 sq.cm/kg) of
stored fuel capacity and not less than a total free
area of 10 square inches (64.5 sq. cm).

12 Rinnai Corporation ROF4500
Definition of an Outdoor Area
This appliance shall only be used in an above ground open air situation with natural ventilation, without stagnant
areas, where gas leakage and products of combustion are rapidly dispersed by wind and natural convection.
Any enclosure in which the appliance is used shall comply with one of the following:
⇒ at least 25% of the total area of the sides must be
completely open on 1 side
Example: A covered enclosure with 3 walls, 8 feet
high, has the dimensions shown.
The open side area is 8 x 15 = 120 square feet.
The total area of the sides is
(2 x 8 x 15) + (2 x 8 x 10) = 400 square feet
Therefore this rule is met because 120/400 = 0.3
(The open side equals 30% of the total area of the
sides.)
• With walls on all sides, but at least one permanent
opening at ground level and no overhead cover.
• Within a partial enclosure that
includes an overhead cover and
no more than two walls (at least 2
sides of the enclosure are open).
• Within a partial enclosure that includes an overhead
cover and more than two walls, the following shall apply:
15
10
⇒ at least 30% of the walled area is open and
unrestricted.
Example: The walled area above is 280 square feet.
Therefore, the area of all the openings in these walls
must total to at least 84 square feet. (0.3 x 280 =
84)
open both
ends
The clearances on the next page
must be followed.
NOTICE

Rinnai Corporation ROF4500 13
Clearances
Description Clearance Required Additional Detail
(A) Below eaves,
balconies, or other
projections
39.37 in (1000 mm) If the projection is a shade cloth or material awning then
this is deemed as a combustible material and the
recommended clearance is 59.05 in (1500 mm).
(B) From the ground or
other surface 3.94 in (100 mm) cabinet
Recommended 27.6 in (700
mm) freestanding
Ground level to bottom of fireplace. In cabinet
installations, for optimal viewing while standing or sitting it
is recommended to position the burner assembly 24-31
inches (600-800 mm) from the ground. If installing the
cabinet option at a lower level, allow enough room for the
gas connection underneath.
(C) Walls 19.68 in (500 mm) Side of appliance to side wall.
Gas and Electricity
Meters 39.37 in (1000 mm)
Drain Pipe 5.91 in (150 mm)
Openable Windows
and Doors 19.68 in (500 mm) From an openable window, door, or non-mechanical air inlet, or any other opening into a building, with the
exception of sub-floor ventilation.
Mechanical Air Inlet 78.74 in (2000 mm) For example, an air conditioning unit
Body Assembly (open 1 sided or 2 sided) Freestanding
CANNOT be installed above the unit if any part of the surround is made of
combustible material. If installing into a non-combustible surround the mantle/
protrusion must also be non-combustible.
Fixed objects such as outdoor furniture, umbrellas and plants should be at least
39.37 inches (1 m) away from the unit while it is in operation.
Additional clearances also need to be observed for the specific installation
applications, detailed on the following pages.
Ensure enough room is maintained around the appliance for servicing, cleaning, and
general access.
Mantles or protrusions
39.37 in (1 m) safe
distance for fixed objects
Installation specific
clearances
Ensure clearance for
servicing
This appliance must be installed as a permanent fixture in an outdoor area.
recommended

14 Rinnai Corporation ROF4500
Installing Freestanding or Enclosed Masonry Applications
Prepare Surround
Construct surround following the clearances to combustibles and minimum height from ground. The surround
must be a permanent and fixed construction.
Install Burner Assembly
Install burner assembly and fix in place with fasteners provided.
Place the cover on the burner when not in use and after it has cooled off.
Install Burn Media and Complete Gas Connection
This is common to all installations. Refer to these sections in the manual.
Prepare a gas connection opening underneath the gas supply access position. Ensure the opening is large
enough for the flexible connection to fit through.
Minimum Dimensions
21.85 in (555 mm)
46.26 in (1175 mm)
18.50 in (470 mm)
A
B
C
17.91 in (455 mm) 17.91 in (455 mm)
19.68 in (500 mm)
8.27 in
(210 mm)
10.24 in
(260 mm)
12.01 in
(305 mm)
Suggested
size for gas
connection
opening
1.38 in (35 mm)
3.15 in
(80 mm)
Gas supply opening
Non-combustible Enclosed Masonry Freestanding
Clad Surround
Refer to the section, Guidelines for Cladding and Finishes.
recommended

Rinnai Corporation ROF4500 15
Installing Body Assembly in an Open 1-Sided or 2-Sided Installation
Steel framing options are available for the open 1-sided
and open 2-sided installations. For ease of installation,
Rinnai provides a steel frame as a kit. Refer to the
separate detailed instructions for assembly of the steel
frame.
To enhance the durability of any type of framing, it is
suggested that the frame is mounted on a paved slab
9.5 inches (250 mm) above unpaved ground and 5.9
inches (150 mm) above paved ground.
Prepare Framing Dimensions
If framing is made of a combustible material, ensure the following minimum framing dimensions and clearances:
Framing Dimensions
A 21.8 in (555 mm)
B 48.3 in (1225 mm) *
C (2-sided) 18.5 in (470 mm) **
C (1-sided) 19.7 in (500 mm) **
Minimum Clearance to Combustibles
NOT ALLOWED
1.0 in (25 mm)
0
Above
Side
Below
Behind 1.2 in (30 mm)
Non-combustible cladding
is required over the entire
frame.
* Includes 1 in (25 mm) side
clearances.
** Includes cladding (for 1-sided unit,
this includes cladding on one side
only)
Attach Metal Lintel and Angled Clearance Brackets
Metal Lintel
Designed to sit above the appliance and replace
combustible framing in areas above the appliance.
To install:
1. Take out and undo 4 fastening screws at either end.
2. Flip side sections 180° and loosely refit screws.
3. Adjust to the desired length before tightening.
Metal
Lintels Angled Brackets
Open 1-sided Cabinet 1 4
Open 2-sided Cabinet 2 4
Parts Required
side sections need to
be rotated 180° and
secured into the
framing above the
appliance
WARNING
The metal lintel and angled clearance brackets are
required for installations where combustible framing is
used.
Cross members above
the appliance must be
non-combustible.
Metal lintels are
provided with the
purchase of the 1-
sided and 2-sided
fireplaces. Metal
lintels are also offered
separately (R2629).

16 Rinnai Corporation ROF4500
Installing Body Assembly in an Open 1-Sided or 2-Sided Installation
Angled Clearance
Brackets Designed to ensure combustible framing is greater than 1 inch (25 mm) from the sides of the unit as shown.
Top View
Open 1-sided
Cabinet
Top View
Open 2-sided
Cabinet
To install:
1. Measure the distance between studs to ensure clearances are adequate, horizon-
tally and vertically.
2. Screw clearance brackets to the inner side of stud.
3. Ensure that the flat face of the clearance bracket is facing out as shown above.
Clad Surround
Refer to the section, Guidelines for Cladding and Finishes.
48.3 in (1225 mm) minimum
cabinet non combustible
cladding
clearance
bracket
timber stud
46.5 in (1180 mm) minimum
47.0 in (1195 mm) maximum
19.7 in
(500 mm)
minimum
48.3 in (1225 mm) minimum non combustible
cladding
clearance
bracket
timber stud
46.5 in (1180 mm) minimum
47.0 in (1195 mm) maximum
18.5 in
(470 mm)
minimum
cabinet

Rinnai Corporation ROF4500 17
Install Body Assembly into Frame
The body assembly includes the burner assembly.
Unpack and fit assembly into frame using the mounting brackets.
For an open 2-sided installation, ensure the control knob is facing in the desired direction.
Installing Body Assembly in an Open 1-Sided or 2-Sided Installation
Install Doors if Applicable
Refer to separate installation instructions.
Install Burn Media and Complete Gas Connection
This is common to all installations. Refer to these sections in the manual.
Attach Mounting Brackets
The mounting brackets have 3 functions: (1) to secure
cabinet to enclosure, (2) to act as seismic restraints
(bottom brackets only), (3) and to connect the outer
steel frame to the cabinet.
Fasten the 4 frame mounting brackets, using the M5
button head bolts, to the body assembly.
Install Steel Frame
1. There is a top and bottom to the steel frame with
the top having a return fold. The installation is
completed using 2 sets of supplied M4 nuts, bolts,
and washers.
2. The frame hooks over the upper brackets and then
swings in at the bottom. Using the 2 self tapping
screws supplied, fasten through the underside of
the lower frame into the lower mounting brackets.

18 Rinnai Corporation ROF4500
Installing Burn Media
WARNING Proper installation of the burn media is critical to the correct operation of this appliance.
Each layer must be installed as specified below.
Use a scoop or gloved hands to transfer the
pumice. Avoid pouring because dust
particles can clog the burner.
Fill the burner tray with pumice and spread
level to the bottom of the granite trims. Not
all the pumice will be needed as more has
been supplied than is necessary.
Using all the small quartz provide, place a
single layer of small quartz stones covering
the entire top of the pumice.
Place the 14 pieces of large quartz stones
on top of the small quartz. Do not stack the
large stones on large stones.
Layer 2 - Single Layer of Small Quartz
Layer 3 - Single Layer of 14 Pieces of Large Quartz
Layer 1 - Pumice
If using the optional fireglass or driftwood burn media, installation instructions are included with those accessories.

Rinnai Corporation ROF4500 19
Complete Gas Connection
LPG Cylinder
The installer/consumer must supply a certified regulator and hose assembly with a 3/8 SAE 45º flare fitting with
5/8 UNF thread. These parts and their 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.
The cylinder to be used must be constructed and marked in accordance with the specifications for LPG cylinders
of the U.S. Department of Transportation (DOT).
A self contained LP-gas supply system shall be limited to a cylinder of 20 pounds capacity or less.
Cylinders must be stored outdoors in a well ventilated area out of the reach of children. Disconnected cylinders
must have threaded valve plugs tightly installed and must not be stored in a building, garage, or any other
enclosed area.
The cylinder supply system must be arranged for vapor withdrawal.
The cylinder must be installed in an upright position.
The gas must be turned off at the cylinder when the appliance is not in use.
The cylinder must include a collar to protect the cylinder valve.
1. Push the flexible connection through the base of the
appliance.
2. Fasten regulator to bottle and tighten firmly using a
spanner. When connecting the hose and regulator
assembly to the gas cylinder, take care to avoid
unnecessary twisting of the flexible hose.
3. Open the gas cylinder valve fully to allow the gas to
flow.
4. Leak test all accessible connections thoroughly using
an electronic meter or soapy water solution (1 part
liquid detergent and 4 parts water) prior to using the
appliance. No leaks are allowed.
TOP VIEW SIDE VIEW CAUTION Locate the hose out of pathways
where people may trip over it or in
areas where the hose may be
accidentally damaged.

20 Rinnai Corporation ROF4500
Guidelines for Cladding and Finishes
These are guidelines only. It is up to the installer to seek advice from the cladding supplier as to the correct
application and specification of the material.
All materials and finishes directly above the appliance must be capable of withstanding the following
temperatures:
• with the door assembly installed 302° F (150° C)
• without the door assembly installed 212° F (100° C)
Cladding materials shall be non-combustible and suitable for an outdoor environment.
If you are installing a door assembly, a heat rated material such as calcium silicate board must be above the fire.
Such materials require installation and sealing in accordance with the supplier specification.
Rinnai accepts no responsibility for deterioration of cladding or finishes.
heat rated material capable of
withstanding 302° F (150° C) is
required above the appliance with
the door assembly installed