Rinnai RIBF2N User manual

This appliance shall be installed in accordance with:




All Rinnai gas products
are A.G.A. certified.
SLIMFIRE 252




Rinnai Australia i Slimfire 252 Operation & Installation Manual
Congratulations on the purchase of your Rinnai Slimfire 252 gas log flamefire.
We trust you will have many years of comfort and enjoyment from your appliance.
BEFORE PROCEEDING WITH THE OPERATION OR INSTALLATION OF YOUR NEW HEATER
PLEASE READ THIS MANUAL THOROUGHLY AND GAIN A FULL UNDERSTANDING OF THE
REQUIREMENTS, FEATURES AND OPERATION OF YOUR NEW APPLIANCE.

Rinnai Australia ii Slimfire 252 Operation & Installation Manual
BEFORE YOU START .......................................................................................................................................... 1
INSTALLATION REQUIREMENTS..................................................................................................................... 1
CERTIFICATION................................................................................................................................................. 1
CARTON CONTENTS / ITEM CHECKLIST........................................................................................................ 1
INSTALLATION RECORD.................................................................................................................................... 2
SAFETY DEVICES.............................................................................................................................................. 5
ABOUT YOUR HEATER ....................................................................................................................................... 6
GENERAL DESCRIPTION.................................................................................................................................. 6
DESIGN FEATURES........................................................................................................................................... 6
OPERATION.......................................................................................................................................................... 7
TO TURN YOUR HEATER ON........................................................................................................................... 7
ADJUSTING HEAT.............................................................................................................................................. 7
FAN OPERATION............................................................................................................................................... 7
TO TURN YOUR HEATER OFF ......................................................................................................................... 7
POWER OUTAGES ............................................................................................................................................ 7
CARE AND MAINTENANCE................................................................................................................................. 8
TROUBLE SHOOTING CHECKLIST.................................................................................................................. 8
SERVICE............................................................................................................................................................. 8
ABNORMAL FLAME PATTERN.......................................................................................................................... 9
TABLE OF CONTENTS - INSTALLATION......................................................................................................... 10
ABNORMAL FLAME PATTERN........................................................................................................................ 27
CONTACT INFORMATION ................................................................................................................................. 33
TABLE OF CONTENTS - OPERATION

Rinnai Australia 1 Slimfire 252 Operation & Installation Manual
BEFORE YOU START
INSTALLATION REQUIREMENTS
This heater must be installed by an authorised person. The installation must conform to local regulations.
The installation must also comply with the instructions supplied by Rinnai.
Service and removal must be carried out by an authorised person.
CERTIFICATION
The Rinnai Slimfire®has been certified by the Australian Gas Association.
The AGA Certification Number is shown on the appliance dataplate.
No parts or functions should be modified or permanently removed from the heater.
Please keep these instructions in a safe place for future reference.
CARTON CONTENTS / ITEM CHECKLIST
The components for Slimfire 252 heater are supplied in separate cartons, the following tables list which
components are in each carton. Ensure that the components listed for the installation method being installed are
present before proceeding with the installation.
The Engine and Fascia are packed into two separate cartons and are required for all installation
types. Masonry installations may require a flexiliner flue to be installed, refer to “MASONRY FLUE
INSTALLATION” on page 17 for details. The Zero Clearance Kit and flue are purchased separately.
Component Descriptions
Carton Contents
Engine Fascia Zero
Clearance Kit
Rinnai Slimfire 252 Engine.
Artificial log set / burn media, Satchel burner granules (packed on top of the engine).
½” BSP Flared nut (x1shipped inside engine, attached to gas connection).
Adhesive backed foam sealing strip.
Operation and Installation manual.
Fascia Mounting Screws (x2 pre-installed in the engine fascia mounting brackets).
Fascia.
Glass dress guard.
Transition box rails (x2).
Transition box upper.
Transition box lower.
Transition box guide plate.
Zero Clearance Box - Top panel.
Zero Clearance Box - Base panel.
Zero Clearance Box - Rear panel.
Zero Clearance Box - Left & Right side panels.
Packet assembly screws, rivets and grommet.
IMPORTANT
5
4
A B C
11
2
1
5
2
16
13
16
14
15
12
10
17
7
8
9
3
6
6
A
B
C
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17

Rinnai Australia 2 Slimfire 252 Operation & Installation Manual
INSTALLATION RECORD
INSTALLERS / GAS FITTERS DETAILS
Installers Name: ____________________________________________________________________
Company Name: ____________________________________________________________________
Company Address: ____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
Company Contact Details
Telephone: ____________________________________________________________________
Mobile Phone: ____________________________________________________________________
Certificate of Compliance / Certification Number: _____________________________________________
Authorised Persons - Licence Number: _____________________________________________________
Installers Signature: ____________________________________________________________________
Installation Date: ____________________________________________________________________
APPLIANCE DETAILS
Model Number: ____________________________________________________________________
Serial Number: ____________________________________________________________________
Installation Address: ____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
____________________________________________________________________
THIS APPLIANCE MUST BE INSTALLED, SERVICED
AND REPAIRED BY AN AUTHORISED PERSON.

Rinnai Australia 3 Slimfire 252 Operation & Installation Manual
SAFETY
• Failure to comply with these instructions could result in a fire or explosion, which could cause
serious injury, death or property damage.
• Improper installation, adjustments, service or maintenance can cause serious injury, death or
property damage. Such work must be performed by an authorised person.
• The appliance must be installed in accordance with the local gas and electrical authority
regulations.
• Flue terminal must always vent directly to outdoors.
• DO NOT extend the flue vertically or horizontally in ways other than prescribed in the appliance
manufacturers’ installation instructions.
• For information on gas consumption, see data plate on the appliance.
• This appliance must not be installed where curtains or other combustible materials could come
into contact with it. In some cases curtains may need restraining.
• WARNING: This heater MUST NOT
be used if either of the glass
panels are damaged.
• When considering installation
ensure minimum clearances as
follows are adhered to, refer Fig. 1.
• Heat radiating from the front of this
heater may over time affect the
appearance of some materials
used for flooring such as carpet,
vinyl, cork or timber. This effect
may be amplified if the air in the
room contains cooking vapours or
cigarette smoke. To avoid this
possibility, it is recommended that
a mat or similar protective sheet be
placed in front of the appliance,
extending at least 750 mm in front
of the glass guard.
• This appliance is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities or lack of experience and knowledge, unless they have been given
supervision or instruction concerning use of the appliance by a person responsible for their
safety.
• The appliance is not intended for use by young children or infirm persons without supervision.
• Young Children must be supervised when in the vicinity of this heater while it is in operation.
• The Glass Dress Guard MUST be fitted to this appliance to reduce the risk injury from serious
burns and no part of it should be permanently removed.
• For protection of young children or the infirm a secondary guard is required.
• If the supply cord is damaged or requires replacing, it must be replaced by the manufacturer or
the manufacturer's agent or similarly qualified person in order to avoid a hazard.
• The heater must not be located immediately below a power socket outlet.
• DO NOT connect to an LPG Gas cylinder indoors.
• A dedicated 240 V earthed 10 Amp power point must be used with this appliance.
• DO NOT modify this appliance. Modifying from original specifications may create a dangerous
situation and will void your warranty.
• Only the flue components specified by Rinnai must be used.
• Unpack the heater and check for damage. DO NOT INSTALL A DAMAGED HEATER. If the heater
is damaged, contact your supplier for advice.
• Before installing the heater, check the label for the correct gas type (refer data plate, inside the
appliance).
• Refer to local gas authority for confirmation of the gas type if you are in doubt.
• This heater must be installed by an authorised person.
WARNING
Note that side and vertical
clearances are measured
from the edge of the glass.
300mm
300mm
300mm
750mm
1000mm
Fig .1

Rinnai Australia 4 Slimfire 252 Operation & Installation Manual
SAFETY
The appliance is not intended for use by young children or infirm persons without supervision.Young children
should always be supervised to ensure that they DO NOT play with the appliance.
DO NOT sit or lean against the heater.
DO NOT allow children or elderly persons to sleep in the warm air discharge from the heater.
DO NOT post or allow children to post articles into the louvres of the heater.
DO NOT cover or place articles on this heater.
DO NOT place articles in front of the louvres.
DO NOT operate / install this heater in areas where painting is taking place, or in places such as hairdressing
salons, where there may be fluff and dust, and where aerosols are used.
DO NOT place articles on or against this appliance.
DO NOT use or store flammable materials near this appliance. Keep flammable materials away from heater.
Combustible materials MUST NOT be placed where the heater could ignite them.
DO NOT spray aerosols in the vicinity of this appliance while it is in operation. Most aerosols contain flammable
substances which can be a heater hazard if used near this heater when it is in use.

Rinnai Australia 5 Slimfire 252 Operation & Installation Manual
SAFETY
A dedicated 240V earthed 10 Amp power point MUST BE USED with this appliance.
DO NOT use power boards or double adaptors to operate this appliance. The heaterMUST NOT be located below
a power socket-outlet.
DO NOT unplug the heater while it is in operation or while the fan is still cycling.
DO NOT place containers of liquid on top of the heater. Water spillage can cause extensive damage to the
appliance and create an electrocution hazard.
DO NOT place articles on or against this appliance.
DO NOT connect to an LPG gas cylinder indoors.
.
Turn the heater ‘OFF’ after use.
DO NOT remove the Glass Dress Guard. The dress guard is fitted to this appliance to reduce the risk of fire or
injury from burns and no part of it should be permanently removed. For protection of children or the infirm, a
secondary guard is recommended.
Heat emanating from the front of the appliance may over time affect the appearance of some materials used for
flooring such as carpet, vinyl, cork or timber. This affect may be amplified if the air in the room contains cooking
vapours or cigarette smoke. To avoid this possibility, it is recommended that a mat be placed in front of the
appliance, extending at least 750 mm in front of the heater.
When the heater is operated for the first time or after long periods of non use a slight odour may be emitted, this is
normal. However if odours persist switch ‘OFF’ the appliance and contact Rinnai.
SAFETY DEVICES
Over Heat Switches: When the heater gets too hot during operation (for example when air outlet louvres are
blocked, or during apower outage) these devices turn the gas off automatically and allow the heater to restart when
cooled down.
Electrical Fuse: The electrical circuits are protected by a fuse.
Flame Failure Sensing System: Automatically cuts off the gas supply to the heater in the event of a flame failure.
Power Failure: In the event of a power failure while the heater is in operation the fan will stop, however the gas
valves remain open and continue to heat the appliance. The overheat protection may then shut off the gas to
protect the heater, however switching the heater to its lowest setting may allow the heater to continue operating
without reaching an overheat condition.

Rinnai Australia 6 Slimfire 252 Operation & Installation Manual
ABOUT YOUR HEATER
GENERAL DESCRIPTION
Your Slimfire is a burning log effect, gas space heating appliance with natural draft combustion system, intended
for use with Natural Gas and Propane. The burning log effect is achieved using two main burners with strategically
placed, 'life like', imitation logs and granules. Temperature control is achieved through manual push button control.
This heater has an electronic ignition. The pilot is only on when the heater is in operation.
Burner, logs and granules are contained in a glass fronted, sealed burner box.
Combustion air is drawn from the room. Combustion product is exhausted via the flue discharge vent when
installed in a masonry chimney or when installed in a zero clearance box through a 100mmØ x 150mmØ twin
skinned flue to the outside of the house.
1. Fireplace / Masonry installation - Engine:
The appliance is directly mounted into an existing masonry fire place or a non-combustible/masonry enclosure
that has a chimney. When installed correctly the appliance is a flush to wall mount.
2. Zero Clearance installation:
The appliance is fitted within a sheet metal Zero Clearance Box Assembly that has been installed into a wall or
other suitable structure. Materials need not be non-combustible. When installed correctly the appliance is a
flush to wall mount.
DESIGN FEATURES.
Rinnai Slimfire Heater
Push button control panel
Ignition / Low button
Medium button
High button
Glass dress guard
Flame window - artificial log set and burn media
Warm air discharge vent
Return air vent
Alternative power cable outlet location on front panel can be left or right handed
7
a
b
c
3
2
1
4
5
6
7
1
2
a
b
c
3
4
5
6
7

Rinnai Australia 7 Slimfire 252 Operation & Installation Manual
OPERATION
TO TURN YOUR HEATER ON
ADJUSTING HEAT
The Slimfire has three heating settings LOW , MEDIUM and HIGH .
Press each of the control buttons in order from right to left, this will ignite additional burners and modulate the fan
speed as shown in diagram below.
FAN OPERATION
The fan will operate automatically when the heater warms up, and will stop when the combustion chamber cools.
When the heater is on the ‘high’ setting the fan will operate on high speed when the heater is hot.
When the heater is on the’ low’ or ‘medium’ heat setting, the fan will operate on slow speed when the heater is hot.
When the heater is on its lowest setting the fan may turn off as the heater cools and restart when warm again.
The fan may continue to operate on slow speed when the burners have been extinguished until the heater cools
down.
TO TURN YOUR HEATER OFF
To turn the heater ‘OFF’ push and release any of the operated control buttons from left to
right in sequence until all are released.
POWER OUTAGES
BEFORE PROCEEDING ENSURE THE GAS AND ELECTRICITY ARE TURNED ON.
You must read and understand these instructions fully before operating the heater.
The push button controls are located on the front lower left hand side of the heater.
Step 1. Press the right hand control (Ignition/Low) button firmly. This
operates the built-in safety device and starts the electronic spark. The
front burner and pilot will ignite. Check that the burner has lit and
continue to hold the button down for up to 15 seconds. The spark will
continue while the button is held down.
Step 2. If the burner does not remain alight, Push the Ignition/Low
button again and release it. This will return it to the ‘OFF’
position. Wait 30 seconds, then repeat the ignition procedure.
The Ignition/Low button
MUST BE in the ‘OFF’ position
before attempting re-ignition.
There is no need to hold the buttons for 15 seconds when adjusting the heat.
The relationship between the burner operation and the fan speed are preset and can not
be independently adjusted.
BUTTON
INGITION/LOW MEDIUM HIGH
FAN SPEED LOW LOW HIGH
FRONT BURNER HIGH HIGH HIGH
REAR BUNER OFF LOW HIGH
MJ/h Usage Natural Propane Natural Propane Natural Propane
7.7 9.0 14.2 15.8 25.0 25.0
If there is a power failure when the heater is in operation the overheat protection may shut off the
gas to protect the heater. In the event of apower failure, turning the heater to its lowest setting may
allow the heater to continue operating without overheating. The fan will not work without electrical
power.
NOTE
a
HIGH MED IGN
~
LOW
a
c
b
a
NOTE
a
a
b
c
NOTE
a
a
b
c
bc a
NOTE

Rinnai Australia 8 Slimfire 252 Operation & Installation Manual
CARE AND MAINTENANCE
Your heater needs very little maintenance, but the following information will help you to keep it looking good and
working efficiently.
TROUBLE SHOOTING CHECKLIST
Use the following chart to help determine whether a service call is required, however if you are unsure about the
way your heater is operating, or if you have any other faults or problems, please refer to your installer or a Rinnai
Customer Care Centre Consultant, see back page for Rinnai contact details.
SERVICE
Rinnai recommend that this appliance and installation be inspected and serviced every 2 years or more frequently.
If the power supply cord or any other component of the heater are damaged, they must be replaced by Rinnai or
a suitably qualified person.
Any service or repair work should only be carried out by an authorised person. Rinnai has service and spare parts
departments nationally. See back cover for contact details.
DO NOT attempt to clean the heater while the appliance is hot or operating.
All parts of the heater can be cleaned using a soft, damp cloth.
DO NOT use solvents or abrasives to clean any parts.
DO NOT spray aerosols in the vicinity of the heater whilst in operation.
DO NOT place articles on or against this heater.
DO NOT store flammable materials near this heater.
DO NOT remove any panels or attempt to carry out any service work other than that mentioned in
the “TROUBLE SHOOTING CHECKLIST” below.
Probable Cause
Fault Condition
Simplest Possible Remedy
Burners fail to ignite
Smell of gas
Fan Not Working
Minor soot deposits
Severe sooting
Glass, Condensating
Glass, Streaky lines
Not plugged in or turned off Plug in power cord and turn power ‘ON’.
Mains power failure Turn heater to LOW or OFF until power returns.
(Initial Install) Air in gas pipe Installer to purge air from gas supply.
Air in hose Repeat Ignition procedure.
Ignition failure Repeat Ignition procedure.
Gas escape Isolate gas supply, call Rinnai.
Gas supply turned off Turn gas supply on at the meter or cylinder.
Inadequate flue system Call Rinnai.
Insufficient gas pressure Call Rinnai.
Log Misalignment Call Rinnai.
Possible fan fault Call Rinnai.
Normal operation Allow heater to warm up.
Service calls for general cleaning, maintenance and wear and tear are not necessarily covered
under the warranty. Service calls of this nature may be chargeable.
Faults caused by insufficient gas supply, gas quality, installation errors or operation errors are not
covered by the Rinnai warranty. Refer to separate Warranty Manual for details.
IMPORTANT
NOTE

Rinnai Australia 9 Slimfire 252 Operation & Installation Manual
CARE AND MAINTENANCE
ABNORMAL FLAME PATTERN
Each Rinnai Flame Fire heater has a distinct flame pattern. The flame should look the sameevery time you operate
your heater, after an initial warm up period of approximately 15 minutes.
Abnormal flame performance and/or pattern canindicate a problem with your heater, such as blocked gas injectors,
incorrectly installed / inadequate flue system orthe artificial logs/burn mediamay have shiftedfrom when theheater
was first installed.
There are some warning signs that could indicate a problem. If any of the signs below occur, please contact Rinnai.
Key signs of abnormal flame performance:
• Appliance turns ‘OFF’ soon after start up and does not relight.
• Flame appears overly orange-yellow.
• Flame appears either very short or very long.
• Flame only burns part way across the burner.
• Severe soot building up on the inside of the glass or on logs.
• Continuous unusual smell from the appliance.
• Continued difficulty or delay in establishing a flame.
Be advised that appliances incorporating a live fuel effect, and designed to operate with luminous
flames, may exhibit slight carbon deposition, this is normal operation.
NORMAL FLAME PATTERN ABNORMAL FLAME PATTERN SOOT BUILD UP
NOTE

Rinnai Australia 10 Slimfire 252 Operation & Installation Manual
SAFETY................................................................................................................................................................. 3
SPECIFICATIONS............................................................................................................................................... 11
DIMENSIONS ...................................................................................................................................................... 12
HEATER LOCATION........................................................................................................................................... 13
GENERAL LOCATION INFORMATION............................................................................................................ 13
TV AND ORNAMENTATION WARNING ......................................................................................................... 13
ENCLOSURE REQUIREMENTS...................................................................................................................... 14
ENCLOSURE DIMENSIONS ............................................................................................................................ 14
HEATER GENERAL INSTALLATION ................................................................................................................ 15
GAS SUPPLY.................................................................................................................................................... 15
ELECTRICAL SUPPLY..................................................................................................................................... 15
MASONRY FLUE INSTALLATION..................................................................................................................... 17
OPEN INSTALLATION METHOD ..................................................................................................................... 17
HEATER ENGINE INSTALLATION - MASONRY............................................................................................... 18
MASONRY INSTALLATION OVERVIEW ......................................................................................................... 18
MASONRY INSTALLATION - DETAIL.............................................................................................................. 18
HEATER ENGINE INSTALLATION - ZERO CLEARANCE ............................................................................... 20
ZERO CLEARANCE INSTALLATION OVERVIEW........................................................................................... 20
ZERO CLEARANCE INSTALLATION - DETAIL ............................................................................................... 20
COMPLETING HEATER INSTALLATION.......................................................................................................... 23
PREPARING FOR COMMISSIONING.............................................................................................................. 23
COMMISSIONING THE APPLIANCE............................................................................................................... 25
ATTACHING FASCIA ASSEMBLY ................................................................................................................... 26
WIRING DIAGRAM.............................................................................................................................................. 28
CHECKLIST......................................................................................................................................................... 29
INSTALLATION AND COMMISSIONING CHECKLIST.................................................................................... 29
CONTACT INFORMATION................................................................................................................. 33
THIS APPLIANCE MUST BE INSTALLED, SERVICED
AND REPAIRED BY AN AUTHORISED PERSON.
TABLE OF CONTENTS - INSTALLATION

Rinnai Australia 11 Slimfire 252 Operation & Installation Manual
SPECIFICATIONS
Model Number RIBF2N (Natural Gas)
RIBF2L (Propane)
Model name Slimfire 252 Gas Log Flame Fire
General description Inbuilt Radiant/Convector, glass fronted, ceramic log space heater
with forced convection and natural draft flue system.
Features Inbuilt & Fireplace installation
Burning log effect
Glass front
Convection Fan, top warm air outlet
Glass Dress Guard
Installation - Masonry
- Inbuilt Masonry (FlexiLiner if required) Combustible Opening (Zero Clearance Box & Twin skinned Flue)
Burners Ember bed and flame burner
Combustion System Naturally aspirated multi port burner.
Flue Type, Natural draft.
Flue - Masonry (if required)
Flue - Zero clearance
Flue Terminal
Can be flued directly into a sealed chimney as per AS/NZS 5601 or
fitted with a Rinnai approved flue system:
FlexiLiner single skinned, diameter: Ø100 mm.
Twin skinned, diameter: inner Ø100mm x outer Ø150mm.
Rectangular spigot rear discharge 43mm x 245mm
Convection Fan Tangential 2 speed, power rating 28 Watts
Gas connection 1/2” BSPF male flare
Gas Control Push button combination control valve
Operation Push button to light pilot and burners (Low, Medium and High)
Gas type NG, Propane (AU) / NG, Universal LPG (NZ Only!)
Gas input rates, MJ/h Pilot/Front
Low
Medium
High
Natural Gas
7.7
8.0
14.2
25.0
Propane
9.0
9.0
15.8
25.0
Burner Pressure, kPa High Natural Gas
0.92 Propane 2.00
Appliance Data Plate location Bottom panel, front right hand side
Ignition Continuous Spark Electronic Ignition
Power Supply 240 V 50 Hz, 1500 mm cord is supplied with a 3 pin plug
Power Consumption High 20 W
Safety Devices Flame Failure Thermocouple
Overheat Switch (Bi-metal strip)
Fan delay (Bi-metal strip)
Electrical Fuse
Power Failure Protection
Glass - Primary
Glass - Secondary
Glass seal material
Log Set
Ceramic Glass
Tempered Glass
Woven fibreglass chord - Hytex® 1000 by mid Mountain USA
Ceramic
Weight 39 Kg
For other specifications please refer to appliance data plate that is located on the front right hand
side bottom panel of the appliance.
NOTE

Rinnai Australia 12 Slimfire 252 Operation & Installation Manual
DIMENSIONS
ABCDEFGH I JK
750mm 645mm 582mm 528mm 275mm 310mm 25mm 45mm 280mm 79mm 43mm
A
B D
E
I
F
H
J
K
G
C

Rinnai Australia 13 Slimfire 252 Operation & Installation Manual
HEATER LOCATION
GENERAL LOCATION INFORMATION
• When positioning the heater, the main variables governing the location are Flueing and Warm Air Distribution.
• This heater must not be installed where curtains or other combustible materials could come into contact with it.
In some cases curtains may need restraining. Refer to page 4 and page 5 for additional safety consideration.
• Mantles and surrounds can be added to compliment the design provided that they conform to the clearances
shown in the diagrams below.
• The minimum clearance from the edge of the burner box glass is 300 mm. The depth of the mantle/surrounds
at the minimum clearance may not exceed 150 mm.
• An additional 100 mm of clearance is required for every extra 50 mm of mantle depth, i.e. for a 200 mm deep
mantle the clearance is 500 mm (as shown below).
TV AND ORNAMENTATION WARNING
INSTALLATION OF TV OR ORNAMENTATION ABOVE THE HEATER
The installation of electrical appliances above and in the vicinity of the heater such as, but not
limited to, Plasma TV, LCD TV, Home Theatre Screens, Speakers, etc must comply with their
manufacturers' instructions.
It is the responsibility of the installer/end-user to check the installation instructions of these items
and to ensure the location is suitable.
This caution also extends to, but is not limited to, ornaments such as: Paintings, Prints,
Photographs, Tapestries, Mirrors, Stuffed Animals, etc.
Please note the recommended clearances as per the diagram above.
The temperature of the wall surface directly above the appliance may be elevated and may
discolour paint finishes or distort vinyl wall coverings. For durability of surfaces you should
contact the relevant manufacturer for their specification.
Use either a shelf or mantle below the TV or ornament or alternately you can construct a recess to
mount TV or ornament in.
Check the manufacturers installation instructions for these items and ensure the recess is
suitable.
Rinnai does not take any responsibility for anydamage occurring to any items installed above and
in the vicinity of the heater.
750mm
300mm 300mm
300mm
1000mm
30
m
Note that side and
vertical clearances
are measured from
the edge of the
burner box glass.
Maximum
mantle depth
(at 400mm) may
only be 50mm
Maximum
mantle depth
(at 400mm) may
only be 50mm
Maximum
mantle depth
(at 500mm) may
only be 150mm
Maximum
mantle depth
(at 500mm) may
only be 150mm
300mm 300mm
300mm
CAUTION
IDEA
NOTE

Rinnai Australia 14 Slimfire 252 Operation & Installation Manual
HEATER LOCATION
ENCLOSURE REQUIREMENTS
Masonry Fireplace
The appliance must be positioned within the fireplace on a flat level surface.
If the appliance is elevatedfrom the ground within the structure, a base must be constructed using suitable material
with supporting joists capable of supporting a minimum of 1.5 times the weight of the appliance.
Zero Clearance In-built installation
Framework of the installation must conform to local building codes. Non-combustible materials need not be used.
If the appliance is elevatedfrom the ground within the structure, a base must be constructed using suitable material
with supporting joists capable of supporting a minimum of 1.5 times the weight of the appliance.
ENCLOSURE DIMENSIONS
Enclosure dimensions are shown below. The enclosure dimensions specified are critical to the successful
installation of this appliance and must be strictly adhered to.
AS/NZS 5601 “GAS INSTALLATIONS” requires that flue components be supported independently
of the appliance.
All dimensions are minimums and are in mm
Installation Type Height (H) Width (W) Depth (D)
Masonry Min 550 Max 630 Min 595 700 Max 360 (min clearance spigot to
back of fire place 50mm!)
Zero Clearance 615 685 380
(read caution below)
For clarity the consumer piping gas supply, electrical connections and some construction details
have been omitted. Refer to “GAS SUPPLY” on page 15 and “ELECTRICAL SUPPLY” on page 15
for details.
When preparing a cavity / frame for a zero clearance installation the total cavity depth MUST also
include the thickness of the external cladding, as the zero clearance box MUST BE installed flush
with the cladding surface. Failure to do this will cause misalignment of the flue systems.
CAUTION
MASONRY INSTALLATION ZERO CLEARANCE INSTALLATION
CAUTION

Rinnai Australia 15 Slimfire 252 Operation & Installation Manual
HEATER GENERAL INSTALLATION
GAS SUPPLY
Installation of consumer piping
Purging Gas Supply
Foreign materials and debris such as swarf, filings, etc. MUST BE purged/removed from the gas supply, failure to
do so may cause damage to the gas control valve causing it to malfunction.
Leak Testing The Connection
Plug the end of the consumer piping gas and leak test all joints.
ELECTRICAL SUPPLY
If a power point is used it MUST BE 240 V, rated at 10A and MUST BE
earthed. This power point MUST NOT be located above the heater. The
heater engine is fitted with a 1.5 m power cord and three pin plug which can
exit the appliance from either the lower left or right hand side of the heater
as required.
Direct Wired Installations
Alternatively the appliance can be direct wired if the power supply is to be
concealed.
Gas pipe sizing must consider the gas input to this appliance as well as all other gas appliances
in the premises. The gas meter and regulator must be specified for the total gas rate.
A suitable sizing chart such as the one in AS/NZS 5601 should be used.
Confirm correct gas type (see labels located on top or rear panels). Refer to local gas authority for
confirmation of gas type if you are in doubt.
The gas supply (consumer piping), termination is inside the heater and enters
through the rear of the appliance.
A ½” BSP flared nut and a ½” BSP Male Flare x ½” Barrel Union - Elbow
are provided for connection to the consumer piping . They are shipped inside
the engine attached to on the gas inlet connection of the heater.
Refer to the table below and the dimensional drawings on this page and on
page 12 for appliance gas inlet location and other relevant dimensions.
Step 1. Mark off the location for the vertical centre line of the heater
enclosure.
Step 2. To the right of the vertical centre line , mark off both the vertical
and horizontal location for the gas supply penetration (consumer
piping). For measurements refer to the Gas Supply Dimension Table
below.
The length of the gas supply (consumer piping) termination is
measured from the front of the enclosure including the thickness
of any cladding material.
Gas Supply Dimension Table
280mm to right of appliance centre-line
43mm from base of enclosure
Consumer piping to be terminated 79mm from the front of enclosure
Use a soapy solution to test all gas connections. If a leak is present bubbles will form at the leak
point. When finished remove any residue with a rag. Prevent any soapy solution from coming in
contact with electrical components.
A qualified electrician will need to be consulted where a direct wired installation is required. Any
such installation must comply with the requirements of AS/NZS 5601, AS/NZS 3000 and any other
relevant local regulations.
WARNING
IMPORTANT
a
b
c
1
1
2
3
FRONTOFENCLOSURE
(IncludingCladding)
REAROF
ENCLOSURE
4
1
2
Gas supply location
3
Gas supply pressure to be 1.13 to 2.75 kPa
b
ac
CAUTION
4
2
3
4
CAUTION
POWER CORD
RUBBER GROMMET
IMPORTANT

Rinnai Australia 16 Slimfire 252 Operation & Installation Manual
FLUE INSTALLATION OPTIONS
Install the Rinnai rigid flue system components in accordance with the ‘Flueing Installation Manual For Rinnai
Flamefire Heaters’ that are provided with the flue kit.
The following diagrams illustrate the flue installation options that are available for the Slimfire 252
flame. Only the genuine Rinnai Flamefire (FLF) flue is certified as part of the Rinnai Slimfire 252
space heaters.
Only an authorised person must install, service and remove the Rinnai Slimfire 252 space heater
and flue system.
Only the flue system components described in the ‘Flueing Installation Manual For Rinnai
Flamefire Heaters’ that is provided with the flue kit must be used.
Components that are not described in that manual, whether manufactured by Rinnai or otherwise,
are not compatible and must not be used.
Rinnai appliance warranty conditions may be voided if non Rinnai flue components are fitted.
For masonry installation details refer to “MASONRY FLUE INSTALLATION” on page 17.
WARNING
Inbuilt
(Masonry)
Inbuilt
(Zero Clearance)
Direct flue Offset flue
FLFTWKIT
FLFHA5FLEX
FLFKIT05
NOTE

Rinnai Australia 17 Slimfire 252 Operation & Installation Manual
MASONRY FLUE INSTALLATION
Two masonry flue installation options are available. These are Open Chimney and Lined Chimney.
An ‘Open Chimney’ installation uses the natural draft properties of a sound chimney along with the addition of an
approved chimney plate and cowl to provide the flueing for the heater. If there is doubt as to the soundness of the
proposed chimney then a Rinnai Flexiliner FLFHA5FLEX should then be installed.
A ‘Lined Chimney’ installation is used when the existing chimney condition is inadequate for an Open Chimney’
installation and uses a Rinnai Flexiliner (flexible) flue system “FLFHA5FLEX” to provide the flueing for the heater,
refer to the instruction sheet provided with this kit for installation details.
OPEN INSTALLATION METHOD
The chimney must be physically checked first and must meet the following set criteria along with local regulations.
Failure to meet these criteria will not only void the product warranty but may affect the performance of the heater.
Chimney Criteria For Open Installation
• All loose/broken bricks must be replaced or repaired ensuring the chimney is of sound construction and does
not leak in accordance with AS/NZS 5601.
• Any under floor air supply to the fireplace must be completely sealed off to prevent secondary air draw.
• Total chimney height MUST NOT be less than 3 metres and flue cowl must terminate above the chimney in
accordance with AS/NZS 5601.
• The chimney must be swept clean and be free of soot and creosote that may have built up if previously used for
a solid fuel fire.
• The hearth surface must be flat and level to support the entire heater. If the heater is not properly supported
noise and vibration may result.
In a masonry fireplace, use a slurry of sand and cement to level the base as required.
Approved
Chimney
Cowl
Chimney
Plate
Mortar Minimum
200mm
Minimum
3m
Approved
Chimney
Cowl
Chimney
Plate
Mortar Minimum
200mm
Minimum
3m
Adaptor
Flexible
Chimney
Liner
Open Chimney Installation Lined Chimney Installation
Appliance
Adaptor
Minimum
50mm
NOTE