Rinnai Q85SN Installation and maintenance instructions

- Donotstoreorusegasolineorotherammable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redepartment.
8U.51.40.01/09.09 Changes reserved.
Installation & Servicing
Instructions
Theseinstructionstoberetainedbyuser.
CAUTION!
Read this manual thoroughly before installing, servicing, putting
into operation or using this boiler and vent system.
WARNING!
Improper installation, adjustment, alteration, service or
maintenance can cause property damage, personal injury or
loss of life. Refer to this manual. For assistance or additional
information consult a qualied installer or the gas supplier.
CAUTION!
The user manual is part of the documentation that is delivered
to the installation's operator. Go through the information in this
manual with the owner/operator and make sure that he or she is
familair with all necessary operating instructions.
NOTICE!
Installation and service must be performed by a qualied
installer,servicetechnicianorthegassupplier.
In the Commonwealth of Massachusetts this boiler must be
installed by a licensed Plumber or Gas Fitter.
Pictured: Q85SN, Q130SN
Q85SP, Q130SP
Highefciencycondensinggasboiler
Q85SN/Q130SN/Q175SN/Q205SN/Q175CN
Q85SP/Q130SP/Q175SP/Q205SP/Q175CP
WARNING!
Ifyoudonotfollowtheseinstructionsexactly,areorexplosionmay
resultcausingpropertydamage,personalinjuryorlossoflife.
Address:103InternationalDrive,PeachtreeCity,GA,30269
Toll-free:1-800-621-9419 • Fax:678-829-1666 • www.rinnai.us

Installation & Servicing Instructions Rinnai Q-Series
2
Contentsofinstructions
These installation instructions contain important information for the safe installation, start-up and maintanance of
boilers with capacities 85,000 through 205,000 BTU/hr.
These installation instructions are intended for professional installers, who have the necessary knowledge and are
approved for working on heating and gas systems.
Subjecttotechnicalchanges
Changes may be made without notice to the illustrations, process steps and technical data as a result of our policy
of continuous improvement.
Updatingofdocumentation
Please contact us if you have any suggestions for improvements or corrections.
Find our contact details on the back of this manual.
CaliforniaProposition65 lists chemical substances known to the state to cause cancer, birth defects, death,
serious illness or other reproductive harm. This product may contain such substances, be their origin from fuel
combustion (gas, oil) or components of the product itself.

Installation & Servicing Instructions Rinnai Q-Series
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Content
1 Safety and general instructions 4
1.1 Designated use 4
1.2 Hazard denitions 4
1.3 Symbol denitions 4
1.4 The following instructions must be followed 5
1.5 Follow these instructions for the space heating water 6
1.6 Tools, materials and additional equipment 6
1.7 Relevant Installation, Service and User manuals 6
1.8 Disposal 6
2 Regulations and guidelines 7
3 Description of the boiler 8
4 Packaging and transportation 9
4.1 Scope of delivery 9
4.2 Transportation 9
5 Installation 10
5.1 Requirements for the installation room 10
5.2 Fitting the boiler 11
5.3 Dimensions 12
5.3.1 Plumbing kits 14
5.3.2 Clearances from the boiler 15
5.4 Technical specications 16
6 Connecting the boiler 17
6.1 Central heating system 17
6.1.1 Plumbing kit installation 18
6.1.2 Safety valve 20
6.1.3 Low water cut off 20
6.2 Expansion tank 20
6.3 Underoor heating system (plastic pipes) 20
6.4 Gas connection 21
6.4.1. Gas connection with natural gas 21
6.4.2 Gas connection with propane gas 22
6.5 Hot water supply (Combi boiler Q175CN/Q175CP) 23
6.6 Condensate drain pipe 23
6.7 Vent system and air supply system 24
6.7.1 Intake / Exhaust Guidelines 24
6.7.2 Examples vent and air supply systems 25
6.7.3 Installation of the vent system 27
6.7.4 Recommended vent/air intake terminal position 28
6.7.5 Dimensioning of the exhaust and air intake duct 30
6.7.6 Combustion air and vent piping lengths 31
6.7.7 Calculation of compensation factor 32
6.7.8 Room Air System (indoor combustion air) 33
7 External hot water cylinders 36
8 Electrical connections 37
9 Boiler controls 40
9.1 Explanation of the function buttons 41
10 Starting up: Filling and de-aerating the boiler and installation 42
10.1 Requirements of the water system 42
10.2 Filling the heating system 43
10.3 Hot water supply 44
11 Adjustments 46
11.1 Altering adjustments 46
11.2 Activating factory settings (green button function) 49
12 Isolating the boiler 49
13 Commissioning 50
13.1 Testing for gas leaks 51
13.2 Testing the Ignition Safety shut off device 51
13.3 Checking for contamination 52
13.4 Checking of the zero pressure control 53
13.5 Checking the O254
13.6 Measuring the ionization current 55
13.7 Installing the casing 55
14 Maintenance 56
14.1 Periodic examination of venting and boiler 56
14.2 Inspection 56
14.3 Maintenance activities 58
14.4 Warranty 60
15 Parts of the boiler 61
16 Blocks and errors 62
17 Other errors 87
18 Spare parts 94
19 Parts list vent system 104
20 Common venting guidelines 105
Appendix A Outdoor Reset Sensor Data 106

Installation & Servicing Instructions Rinnai Q-Series
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1 Safetyandgeneralinstructions
Please observe these instructions in the interest of your own safety.
1.1 Designateduse
Theboilerisdesignedforheatingwaterforacentralheatingsystemand,ifapplicable,
generating domestic hot water. The boiler is delivered with a burner controller
(MCBA) pre-installed.The boiler can be tted with a modulating outdoor reset sensor
ARV12 (included with the boiler) or an On/Off thermostat or relay panel end switch
(accessories).
1.2 Hazarddenitions
The following dened terms are used throughout the documentation to bring attention
to the presence of hazards of various risk levels. Notices give important information
concerning the operation of the product.
DANGER:
Indicates the presence of hazards that will cause severe personal injury, death or
substantial property damage.
WARNING:
Indicates the presence of hazards that can cause severe personal injury, death or
substantial property damage.
CAUTION:
Indicates presence of hazards that will or can cause minor personal injury or property
damage.
CAUTION:
Risk of electric shock. Indicates presence of hazards due to electric shock.
NOTICE:
Indicates special instructions on installation, operation or maintenance that are
important but not related to personal injury or property damage.
1.3 Symboldenitions
The following (safety) symbols may be encountered in these installation instructions
and on the unit:
Thissymbolindicatesthattheunitmustbestoredawayfromfrost.
Thissymbolindicatesthatthepackagingand/orcontentscanbedamagedas
aresultofinsufcientcaretakenduringtransport.
Thissymbolindicatesthat,whilststillinitspackaging,theunitmustbe
protectedfromweatherconditionsduringtransportandstorage.
!
CAUTION
CAUTION
!
WARNING
NOTICE
i
!
DANGER

Installation & Servicing Instructions Rinnai Q-Series
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1.4 Thefollowinginstructionsmustbefollowed
- The boiler must only be used for its designated purpose, as described in the
Installation Instructions.
- Each unit is tted with a data plate. Consult the details on this plate to verify whether
the boiler is compliant with its intended location, e.g.: gas type, power source and
venting classication.
- Only use the boiler with the accessories and spare parts listed.
- Other combinations, accessories and consumables must only be used if they are
specically designed for the intended application and do not affect the system
performance and the safety requirements.
- Maintenance and repairs must only performed by trained professionals.
- Installation of a condensing gas boiler must be reported to the relevant gas utility
company and have it approved.
- You are only allowed to operate the condensing gas boiler with the vent system
that has been specically designed and approved for this type of boiler.
- Please note that local permission for the vent system and the condensate water
connection to the public sewer system may be required.
You must also respect:
- The local building codes stipulating the installation rules.
- The local building codes concerning the air intake and outlet systems and the
chimney connection.
- The regulations for the power supply connection.
- Thetechnicalruleslaiddownbythegasutilitycompanyconcerningtheconnection
of the gas connection to the local gas mains.
- The instructions and standards concerning the safety equipment for the water/
space heating system.
- The Installation Instructions for building heating systems.
- The boiler must be located in an area where leakage of the boiler or connections
will not result in damage to the area adjacent to the boiler or to lower oors of
the structure. When such locations cannot be avoided, it is recommended that a
suitable drain pan be installed under the boiler.
- The boiler must be installed in such way that the all components are protected
from water (dripping, spraying, rain etc.) during boiler operation and service.
- The boiler must not be installed on or against carpeting.
- Do not restrict or seal any air intake or outlet openings.
- If you nd any defects, you must inform the owner of the system of the defect and
the associated hazard in writing.
DANGER.Gasisammableandmaycauseanexplosion.
Bewareifyousmellgas:theremaybeanexplosionhazard!
If the information in these instructions is not followed exactly, a re or explosion may
result causing property damage, personal injury or death.
- Do not store or use gasoline or other ammable 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 supllier, call the re department.
Shouldoverheatingoccurorthegassupplyfailtoshutoff,donotturnoff
ordisconnecttheelectricalsupplytothepump.Instead,shutoffthegas
supplyatalocationexternaltotheboiler.
!
DANGER
!
WARNING
!
WARNING

Installation & Servicing Instructions Rinnai Q-Series
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1.5 Followtheseinstructionsforthespaceheatingwater
Unsuitable heating system water can cause the formation of scale or sludge, which
affects system efciency. It can also cause corrosion and reduce life of the heat
exchanger.
– You must follow Rinnai guidelines for boiler water quality.
– Thoroughly ush the system prior to lling.
– Follow the Rinnai cleaning instructions.
– Never use water that has been treated by a salt bedding exchangers, reverse
osmosis, D.I., or distilled water to soften the water to ll the heating system.
– DonotuseinhibitorsorotheradditivesunlessapprovedbyRinnaiforthatpurpose!
– When frost protection of the heating system is desired, only use Rinnai-approved
antifreezes, Noble NoburstAluminum, or Rhomar RhoGardAluminum Safe Multi-
Metal.
– When using oxygen-permeable pipes, e. g. for under oor heating systems, you
must separate the system from the boiler using plate heat exchangers.
– Valve off boiler while ushing system, do not introduce any system cleaner into the
boiler loop. Flush system thoroughly to remove all system cleaner before lling
boiler.
See the Rinnai Boiler Applications Manual or Chapter 10 of this manual for
additional information.
1.6 Tools,materialsandadditionalequipment
For the installation and maintenance of the boiler you will need:
– Standard tools for space heating, gas and water tting
– Digitalmanometerthatiscapableofreadingbothpositiveandnegativepressures
(accuracy -0.001"W.C.)
– Combustion analyzer (intended for use with condensing boilers)
– Digital multimeter
– pH digital meter
– Metric Allen wrenches
– Metric socket wrenches
In addition, a handtruck with a fastening belt is useful.
Formaintenancetotheboileryouneed,apartfromstandardtoolingforspaceheating,
gas and water tting the following items:
- Rinnai toolkit Q and E-Series
1.7 RelevantInstallation,ServiceandUsermanuals
– Vent system
– Rinnai Boiler Applications Manual
1.8 Disposal
– Dispose of the boiler packaging in an environmentally sound manner.
– Dispose of components of the heating system (e.g. boiler or control device), that
must be replaced in an environmentally responsible manner.

Installation & Servicing Instructions Rinnai Q-Series
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2 Regulationsandguidelines
The installation must comply to the requirements of the authority having jurisdiction
or, in the absence of such requirements, to the latest edition of the National Fuel Gas
Code, ANSI Z223.1/NFPA 54. In Canada, installation must be in accordance with
the requirements of CAN/CSA B149.1, Natural Gas and Propane Installation Code.
Where required by the authority having jurisdiction, the installation must comply to
the Standard for Controls and Safety Devices for Automatically Fired Boilers, ANSI/
ASME CSD-1.
Install CO detectors per local regulations. Boiler requires an inspection every 2 years
and maintenance every 4 years or 4000 hours. See maintenance section chapter 14.
Operating Limits of the boiler:
Max. boiler temperature: 176 °F (80 °C)
Max. operating pressure: 45 psi (3 bar)
Max Allowable Working Temperature ASME: 200 °F (93 °C)
Max. Allowable Working Pressure ASME: 45 psi (3 bar)
The hot water distribution system must comply with all applicable codes and
regulations. When replacing an existing boiler, it is important to check the condition
of the entire hot water distribution system to ensure safe operation.
ForinstallationsintheCommonwealthofMassachusetts,the following local
requirements apply in addition to all other applicable NFPA requirements:
For direct- vent boilers, mechanical-vent heating appliances or domestic hot water
equipment, where the bottom of the vent terminal and the intake is installed below
four feet above grade the following requirements must comply:
1) If not present on each oor level where there are bedrooms, a carbon monoxide
detector and alarm must be placed in a living area outside the bedrooms. The
carbon monoxide detector and alarm must comply with NFPA 720 (2005 Edition).
2) A carbon Monoxide detector and alarm shall be located in the room that houses
the boiler and/or equipment and shall:
a) Be powered by the same electrical circuit as the boiler and/or equipment such
that only one service switch services both the boiler and the carbon monoxide
detector;
b) Have battery back-up power;
c) Meet ANSI/UL 2034 Standards and comply with NFPA 720 (2005 Edition); and
d) Have been approved and listed by a Nationally Recognized Testing Lab as
recognized under 527 CMR.
3) A product-approved vent terminal must be used, and if applicable, a product
approvedairintakemustbeused.Installationshallbeperformedinstrictcompliance
with the manufacturer’s instructions. A copy of the installation instructions shall
remain with the boiler and/or equipment at the completion of the installation.
4) A metal or plastic identication plate shall be mounted at the exterior of the building,
four feet directly above the location of vent terminal. The plate shall be of sufcient
size to be easily read from a distance of eight feet away, and read “Gas Vent
DirectlyBelow”.
NOTICE
i

Installation & Servicing Instructions Rinnai Q-Series
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For direct-vent boilers mechanical-vent heating boilers or domestic hot water
equipment where the bottom of the vent terminal and the intake is installed higher
than four feet above grade the following requirements must comply:
1) If not present on each oor level where there are bedrooms, a carbon monoxide
detector and alarm must be placed in a living area outside the bedrooms. The
carbon monoxide detector and alarm must comply with NFPA 720 (2005 Edition).
2) A carbon monoxide detector shall:
a) Be located inn the room where the boiler and/or equipment is located;
b) Be either hard-wired or battery powered or both; and:
c) Shall comply with NFPA 720 (2005 Edition).
3) A product-approved vent terminal must be used, and if applicable, a product-
approved air intake must be used. Installation shall be in strict compliance with
the manufacturer’s instructions.Acopy of the installation instructions shall remain
with the boiler and/or equipment at the completion of the installation.
3 Descriptionoftheboiler
The Rinnai Q boiler is a room sealed, condensing and modulating central heating
boiler,withanoptionalintegratedDHWcylinder(integratedDHWontheQ175Conly).
The QxxS boiler models have the ability to control a domestic hot water indirect tank.
The boiler is provided with a compact stainless steel heat exchanger with smooth
tubes. This design is a well thought out principle using durable materials.
The boiler burns gas for supplying heat. The heat is transferred in the heat exchanger
to the water in the central heating system. By cooling down the exhaust gases
condensate is formed. This results in high efciency. The condensate, which has
no effect on the heat exchanger and the function of the boiler, is drained through
condensate collector trap.
The boiler is provided with an intelligent control system (CMS Control Management
System). The boiler anticipates the heat demand of the central heating system or the
domestic hot water facility system.
Whenanoutdoorsensor isconnectedtotheboileritwilloperateweatherdependantly
using outdoor reset. This means that the boiler control measures the outside
temperature and supply temperature. With this data the boiler calculates the optimal
supply temperature for the installation.
Explanation of the type indication: Rinnai Q205SN
Q = Type
205 = Nominal load in (x1,000) BTU
S = System/Solo (C = Combi)
N = Natural Gas (P = Propane Gas)
Different boilertypes:
Roomsealedboiler
The boiler retreives its com-
bustion air from outside then
discharges the ue gasses to
the outside.
Condensing
Retrieves heat as much as
possible from the ue gas-
ses. Water condensates on
the heat exchanger.
Modulating
Stepless higher or lower
burning according to the heat
demand.
System/Solo boilers: Combi boiler with integrated DHW cylinder
Q85SN, Q130SN Q175SN, Q205SN Q175CN
Q85SP, Q130SP Q175SP, Q205SP Q175CP

Installation & Servicing Instructions Rinnai Q-Series
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4 Packagingandtransportation
4.1 Scopeofdelivery
The boiler is supplied ready for use.
• Please check if the packaging is intact.
• Check if all the items listed are included in the delivery.
The supply kit contents:
• Boiler with casing; • Template on inside of package ;
• Automatic air separator (inside the boiler); • Installation instructions;
• Wall mounting suspension bracket; • User manual;
• Bronze adapter ttings; • Service manual;
• 3" PP exhaust adapters (x2); • Outdoor sensor ARV12
• Plumbing kit; • 3/4" Gas shut off valve
• Fixing material consisting of plugs and screws;
4.2 Transportation
Theboilermaybedamagedwhennotsecuredproperly.
- Only transport the boiler using appropriate transportation equipment, such as a
handtruck with a fastening belt or special equipment for maneuvering steps.
- When shipping the boiler must be secured on the transportation equipment to
prevent it from falling off.
- Protect all parts against impacts if they are to be transported.
- Follow the transportation markings on the packaging.
• Packaged boilers must always be lifted and carried by two people, or you must
use a handtruck or special equipment for transport.
!
CAUTION

Installation & Servicing Instructions Rinnai Q-Series
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5 Installation
5.1 Requirementsfortheinstallationroom
- Theroomwheretheboilerwillbeplacedmustalwaysbefrostfree.
- Donotstoreorusegasolineorotherammablevaporsandliquidsinthe
vicinityofthisoranyotherappliance.
- Neveruseorstoreanychlorinateddetergentsorhalogenatedhydrocarbons
(e.g.inspraycans,solventsanddetergents,paints,adhesives)inproximity
oftheboiler.
- Theboilermustbeinstalledinsuchawaythatitisprotectedfromwater
(dripping, spraying, rain, etc.) during operation and service (circulator
replacement,condensatetrap,controlreplacement,etc.)
- Thisboilerisforintendedforindoorinstallationsonly.
Productstoavoidpresentinboilerroom
and/oraroundcombustionairintake
Spray cans containing chloro-/fluorcarbons
Ammonium and/or ammonium solutions
Permanent wave solutions
Chlorinated waxes and/or cleaners
Swimming pool chemicals based on chlorine
Calcium chloride used for thawing
Sodium chloride used for water softening
Refrigerant leaks
Paint or varnish removers
Hydrochloric acid/muriatic acid
Cements and glues
Antistatic fabric softeners used in clothes dryers
Chlorine-type bleaches, detergents, and cleaning solvents
found in household laundry rooms
Adhesives used to fasten building products and
other similar products
Areaslikel
y
tohavecontaminants
Dry cleaning/laundry areas and establishments
Swimming pools
Metal fabrication plants
Beauty shops
Refrigeration repair shops
Photo processing plants
Auto body shops
Plastic manufacturing plants
Furniture refinishing areas and establishments
New building construction
Remodeling areas
Garages with workshops
!DANGER

Installation & Servicing Instructions Rinnai Q-Series
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5.2 Fittingtheboiler
- Remove the packaging materials.
- Do not tear the packaging. Take notice of the presence of the mounting
templateattheinsideofthecartonwrapper.
- Laytheboileronitsbackduringunpacking.Whenunpacking,thecasingcan
beremovedfromtheboiler.Thispartcanbekeptapartduringinstallation.It
mustbeplacedontheboilerandxedwiththescrewbehindthedoorbefore
theboilerisstartedup.
Turntheboilertoitsside andremovethewallbracketfrom the backofthe
boilerbyremovingthe2screws.
The boiler can be mounted practically to any wall with the suspension bracket and the
enclosed mounting equipment.
- The wall must be at and of sufcient strength in order to be able to securely hold
and support the boiler weight with its water content.
- Take note of the necessary space around the boiler for installation of venting
system, pipework and servicing. See drawing on pages 12 to 15.
The location of the boiler can be determined by using the template which is printed
on the inside the boiler package wrapping. Remember to account for the spacing of
the plumbing kit.
- Drill the necessary holes using the template
- Install the mounting bracket to the wall using the supplied mounting materials
Liftingandcarryingprecautions.
Toavoidpersonalinjurypleasefollowtheserecommendations:
- Alwayslifttheboilerwith2peopleorusespecialequipment.
- Whenliftingtheboiler,bendtheknees,andkeepthebackstraightandfeet
apart.
- Donotliftandtwistatthesametime.
- Liftandcarrytheboilerclosetothebody.
- Wearprotectiveclothingandglovestoprotectfromanysharpedges.
Lifttheboileronlybytheboiler'srearwall.
- Dispose the packaging materials.
!
CAUTION
NOTICE
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NOTICE
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!
WARNING

Installation & Servicing Instructions Rinnai Q-Series
12
Boilertype
Combi
Q85SN/Q85SP
Q175SN/Q175SP
Q130SN/Q130SP
Q205SN/Q205SP
Q175CN/Q175CP
inch / mm inch / mm inch / mm
A Height 26.8" / 680 26.8" / 680 26.8" / 680
B Width 19.7" / 500 26" / 660 39.4" / 1000
C Depth 15.2" / 385 15.2" / 385 15.2" / 385
D Left side / vent 13.2" / 335 19.5" / 495 19.5" / 496
E Center to center / vent and air supply 4.7" / 120 4.7" / 121 4.7" / 122
F Back / vent 10.6" / 270 10.6" / 270 10.6" / 270
G Left side / gas pipe 2.6" / 65 2.6" / 65 2.6" / 65
H Left side / supply pipe 7.3" / 185 7.3" / 185 7.3" / 185
J Left side / return pipe 11.2" / 285 17.5" / 445 17.5" / 445
K Left side / condensate pipe 14.6" / 370 20.9" / 530 20.9" / 530
L Left side / expansion pipe 23.2" / 590
N Left side / cold water pipe 34.8" / 885
O Left side / hot water pipe 37.6" / 955
P Pipe length of g* 0.7" / 18 0.7" / 18 0.7" / 18
Q Pipe length of c* 2" / 50 2" / 50 2" / 50
R Pipe length of f, r, e, k and w* 2.3" / 60 2.3" / 60 2.3" / 60
S Back / Center of pipe c* 1" / 25 1" / 25 1" / 25
T Back / Center of pipe g* 1.6" / 40 1.6" / 40 1.6" / 40
U Back / Center of pipe f, r, e, k and w* 2" / 50 2" / 50 2" / 50
VPipe length vent co-axial
Pipe length vent parallel 2.6" / 65 5.8" / 147 2.6" / 65 5.8" / 147 2.6" / 65 5.8" / 147
Solo
5.3 Dimensions
dimensions table 1
dimensions figure 1
wall
C
E
F
A
U
T
S
wall
B
N
PQR
B
wall
D
HJK
0.4"
10
2"
50
G
L
HJK
G
D
ceiling
Min. 10" /
250mm
P
V
V

Installation & Servicing Instructions Rinnai Q-Series
13
Boilertype Combi
Q85SN/Q85SP Q175SN/Q175SP
Q130SN/Q130SP Q205SN/Q205SP Q175CN/Q175CP
Vent system / Combustion air supply 80/125mm 80/125mm 80/125mm
Gas pipe - g 3/4"M-NPT 3/4"M-NPT 3/4"M-NPT
Supply pipe - f 1.1"x 1"M-NPT /
28mm 1.4"x 1¼"M-NPT / 35mm 1.4"x 1¼"M-NPT / 35mm
Return pipe - r 1.1"x 1"M-NPT /
28mm 1.4"x 1¼"M-NPT / 35mm 1.4"x 1¼"M-NPT / 35mm
Condensate pipe - c 0.95" / 24mm 0.95" / 24mm 0.95" / 24mm
Expansion pipe - e 0.87"x ¾"M-NPT /
22mm
Cold water pipe - k 0.6"x ¾"M-NPT /
15mm
Hot water pipe - w 0.6"x ¾"M-NPT /
15mm
Solo
connection diameters table 2
boiler connections figure 2
gf rcekw
gfrc gf rc
Connection for combustion air supply and vent system

Installation & Servicing Instructions Rinnai Q-Series
14
5.3.1 PlumbingKits
Rinnai supplies with each type of boiler a Plumbing kit. Find below the dimensions.
See chapter 6.1 for additional information.
12.00
(REF. 19.07)
(REF. 5.42)
260mm
10.236
(REF. 20.47)
.125
1 1/2”1 1/2”
PlumbingKit3
Suitable for:
Q175SN / Q175SP
Q175CN / Q175CP
Q205SN / Q205SP
9.00
(REF. 15.82)
(REF. 5.29)
100mm
3.937
(REF. 19.64)
.125
1 1/4”1 1/4”
PlumbingKit2
Suitable for:
Q85SN / Q85SP
Q130SN / Q130SP
Plumbing kit 2 g.3
Plumbing kit 3 g.4

Installation & Servicing Instructions Rinnai Q-Series
15
Minimumrequiredclearances
tocombustibles
Minimumrequiredclearances
tonon-combustibles
Recommended
serviceclearances
Alltypes
A
lltypes
A
lltypes
inch / mm inch / mm inch / mm
Top of boiler 2" / 50 2" / 50 10" / 250
Back of boiler 0" 0" 0
Front of boiler 6" / 150 6" / 150 24" / 600
Left side of boiler 2" / 50 2" / 50 2" / 50
Right side of boiler 2" / 50 2" / 50 2" / 50
Floor / Ground 12" / 300 12" / 300 30" / 762
Vent 0" 0" 0"
clearances to the boiler table 3
wall
2"
50
ceiling
Min. 10" /
250mm
15.7"
400 24"
600
service clearances to the boiler figure 5
For closet installation: clearance is 1” / 25mm from the front.
LowLossHeader
Clearances to combustible and non-combustible is 0 inch for sides, top, front and oor/ground
5.3.2 Clearencesfromtheboiler
2"
50

Installation & Servicing Instructions Rinnai Q-Series
16
5.4 Technicalspecications
Technical specifications Table 4
Combi
Q175CN Q85SN Q130SN Q175SN Q205SN
Boilertype Q175CP Q85SP Q130SP Q175SP Q205SP
Input Hs CH BTU/hr 175,000 85,000 130,000 175,000 205,000
kW 51 25 38 51 60
Propane orifice diameter inch / mm 0.22"/ 5.7 0.16"/ 4.15 0.20"/ 5.2 0.22"/ 5.7 0.22"/ 5.7
Display indication at start-up 51.tP 25.P 38.P 51.P 60.P
QnOutput non-condensing CH BTU/hr 157,000 77,000 117,000 157,000 184,000
kW 45.9 22.5 34.2 45.9 54.0
QnOutput EN677 efficiency CH BTU/hr 172,400 84,000 127,600 172,400 202,200
kW 50.2 24.7 37.3 50.2 59.1
QnOutput AFUE CH BTU/hr 167,500 82,000 117,000 167,500 184,000
kW 48.8 24.1 36.5 48.8 57.4
Efficiency at 98.6/86°F (36/30°C) part
load, Hs, EN677 CH % 98.5 98.8 98.2 98.5 98.5
AFUE according IBR % 95.7 96.5 96.1 95.7 95.7
O2(at full load) %
Electr. power consumption max. W 210 137 144 210 234
Electr. power consumption stand by W
Current V/Hz
Fuse rating A
Degree of protection acc. EN 60529
Weight (empty) lbs / kg 196 / 89 110 / 50 117 / 53 141 / 64 141 / 64
Water content CH gallon / liter 1.8 / 7 0.9 / 3.5 1.3 / 5 1.8 / 7 1.8 / 7
Water content DHW gallon / liter 3.7 / 14
After run time pump CH min
After run time pump DHW min
PMS Water pressure min.-max. PSI / bar
PMW Water pressure DHW max. PSI / bar 150 / 10 n.a. n.a. n.a. n.a.
Flow temperature max. °F / °C
Pump type UPER 20-78 UPER 20-58 UPER 20-78 UPER 20-78 UPER 20-78
Available pump height CH (T = 25K) PSI / kPa 2.9 / 20 5.2 / 36 3.0 / 21 2.9 / 20 5.5 / 38
Approvals ASME, CSA ASME, CSA ASME, CSA ASME, CSA ASME, CSA
DHW flow (at 50°F) gallon/min 6.2
DHW flow (at 10°C) liter/min 23.5
DHW flow (at 75°F) gallon/min 4.1
DHW flow (at 23.9°C) liter/min 15.5
Pressure difference DHW PSI / bar 4.3 / 0.3
CSA number
176 / 80
Q-Series
Natural gas: 4.4 - 4.7 (Propane: 4.8 - 5.1)
14
120Vac/60Hz
5AF & 4AT
IPX0D
2183087
5
1
14-43 / 1-3

Installation & Servicing Instructions Rinnai Q-Series
17
6 Connectingtheboiler
The boiler has the following connection pipes;
- The central heating circuit pipes.
These must be connected to the Plumbing Kit by means of adapter ttings.
See further chapter 6.1;
- The gas supply pipe.
It is provided with a 3/4" male thread into which the tail piece of the gas valve can
be screwed. See further chapter 6.4;
- The condensation drain pipe.
It consists of an oval 1" (24 mm) plastic pipe. The drain pipe can be connected to
this by means of an open connection. If the open connection is tted in a different
location, then the pipe can be lengthened by means of a 1 1/4" (32 mm) PVC
sleeve. See further chapter 6.6;
- The vent system and air supply system.
It consists of a concentric connection 3"/5" (80/125 mm). The boiler can be converted
to a twin pipe connection that will accept 80mm ue and intake air or with the use
of the included adapters 3” PVC / CPVC ue and intake. See further chapter 6.7.
- Cold and hot water pipes for domestic hot water (DHW).
Combi boilers only: These consist of 3/4" (15 mm) copper pipe and can be
connected to the installation by means of 3/4" M-NPT adapter ttings. See further
chapter 6.5;
Thepipetobeconnectedtotheboilermustbecleanedbeforeconnectingin
ordertopreventdirtfromenteringanddamagingtheboiler.
6.1 Centralheatingsystem
Connect the central heating system according to its instructions.
The boiler pipes can be connected to the installation by means of compression ttings.
Reducers should be used for connecting to thick-walled pipe (welded or threaded).
Whenremovingtheplasticsealingcapsfromthepipes,dirtytestingwater
maydrainfromtheboiler.
APlumbingKitmustbettedtotheboiler.
Theboiler,whenusedinconnectionwitharefrigerationsystem,must
beinstalledsothechilledmediumispipedinparallelwiththeboilerwith
appropriatevalvestopreventthechilledmediumfromenteringtheboiler.
Theboilerpipingsystemofahotwaterboilerconnectedtoheatingcoils
locatedinairhandlingunitswheretheymaybeexposedtorefrigeratedair
circulationmustbeequippedwithowcontrolvalvesorotherautomatic
meanstopreventgravitycirculationoftheboilerwaterduringthecooling
cycle.
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Installation & Servicing Instructions Rinnai Q-Series
18
6.1.1 PlumbingKitinstallation
Rinnai supplies specic Plumbing Kits with each boiler type, which must be tted directly
underneath the boiler on the supply and return pipe. Use of the Rinnai boiler without the
plumbing kit will result in the void of warranty.
Toprotecttheentireheatingsystemwerecommendinstallingadirtparticletrap
inthereturncircuit.Whentheboilerisinstalledtoanexistingheatingsystemthis
trapisrequired.UseofaYstrainerisnotpermittedasasubstituteforadirttrap.
- Install shut-off valves immediately before and after the dirt particle lter to allow the trap
to be cleaned.
- Position 3 (gure 6) is a garden house thread boiler drain that can be used to drain the
boiler or add water treatment additives to the system such as inhibitors or glycol.
- Position 4 (gure 6) is the supply connection for an indirect tank when used with the
optional 3-way valve kit.
- For information on locating the expansion tank and system ll, please see the Rinnai
Boiler Applications Manual.
Thoroughlyushallpipesandradiators.WerecommendtheuseofaRinnai
approvedsystemcleaner.PleaserefertotheRinnaiBoilerApplicationsManualfor
anapprovedlistofRinnaisystemcleaners.
- Refer to the installation template and chapter 5.3 for the pipe connection dimensions.
- Fit the bronze adapter ttings, supplied with the boiler (g. 6, pos. 5) rst to the
Plumbing Kit and then to the boiler.
- Connect the expansion tank to the system. See chapter 6.2.
- Connect the pipes so that they are free from strain.
ConnectingboilerwithDHWtank
- Connect the external DHW tank according to the installation instructions of the DHW
tank and ttings concerned. See chapter 7 and the Rinnai Boiler Applications Manual for
additional information.
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1
2
3
4
5
6
78
1. Plumbing kit
2. Safety valve
3. Filling connection
4. DHW ow connection
in case of optional
internal 3 way valve
5. Bronze adapter ttings
6. Service valves
7. Flow
8. Return
9. External pump
Plumbing Kit installation g. 6
9
Compression fittings.
Parts:
1. Nut
2. Ferrule
3. Fitting
Fitting instructions:
1. Push the complete
fitting over the pipe as
far as possible. Ferrule
should be over the
pipe completely.
2. Turn the nut handtight
clockwise.
3. Use 2 wrenches, one
to hold the fitting on
its place, the other
for tighten the nut
clockwise in 3/4 turn.
21
3

Installation & Servicing Instructions Rinnai Q-Series
19
The boiler has a self-adjusting and self-protecting control system for the load and the pump
capacity. By this means the temperature difference between the supply and return water is
checked.
Iftheinstallationresistanceisoverthestatedvalue;thepumpwillrotateatmaximumcapacity
andthe loadwill be adjusteduntil anacceptabletemperature differencebetweensupplyand
returnwaterhasbeenobtained.If,afterthis,thetemperaturedifferenceisstillnotacceptable
then the boiler will switch off and wait until an acceptable temperature has arisen.
If an unacceptable temperature is detected, the control will repeatedly try to achieve water
ow over the boiler. If not the boiler will switch off.
The electrical side of the external circulation pump (g. 6, pos. 9) can be connected to the
Control Tower. This pump thus switches simultaneously to the boiler pump.
The maximum absorbed current consumption of the external circulation pump may not
exceed 120V, 2 Amp. If a pump with a larger current draw is required an isolation relay
must be used. See the Rinnai Boiler applications manual for further information. The extra
external pump must be selected according the installation resistance and required ow.
As standard the boiler is provided with a water lter in the return pipe of the boiler, so that
debris of the central heating water is prevented from affecting the boiler.
Theboilerisdesignedtobeusedonpressurizedheatingsystemsonly.
NOTICE
i
pump index lines UPER 20-58 graph 1a
pump index lines UPER 20-78 graph 1b
0
2
4
6
8
10
12
14
0 2 4 6 8 10 12
Q [gallons/min]
PSI
UPER 20-58 25% UPER 20-58 100% Resistance Q85S
0
4.6
9.2
13.8
18.5
23.0
27.7
32.3
Feet of head
0
2
4
6
8
10
12
14
0 2 4 6 8 10 12
Q [gallons/min]
PSI
UPER 20-78
25% UPER 20-78 100% Restistance Q175S Resistance Q175C Resistance Q205S Resistance
Q130S
0
4.6
9.2
13.8
18.5
23.0
27.7
32.3
Feet of head

Installation & Servicing Instructions Rinnai Q-Series
20
6.1.2 Safetyvalve
AnASME30psipressurereliefvalveisinstalledontheplumbingkitincluded
withtheboiler.
6.1.3 Lowwatercutoff
TheRinnaiQboilerhasafactoryinstalledpressureswitchtypeLowWaterCut
Off(LWCO).CheckyourlocalcodestoseeifaLowWaterCutOffisrequired
(LWCO) and if this device conforms to local code.  See the Rinnai Boiler
ApplicationsManualforfurtherinformation.
TheLowwatercutoffisnotserviceable.
6.2  Expansiontank
An expansion tank must be part of the central heating system. The expansion tank
must be appropriate to the water content of the installation. The pre-charge pressure
dependsontheinstallationheightabovethe mountedexpansiontank.Theexpansion
tank is NOT a part of the delivery and should be sourced locally. Please refer to the
expansion tank manufacturer for further information. The Combi boiler Q175C is
equipped with an expansion tank connection. This pipe is connected with the three
way valve and boiler pump.
Fillexpansiontanktoaminimumof14.5psi.
Fortheboilertofunctioncorrectly,itisnecessarytoconnecttheexpansion
tanktotheexpansiontankconnectionontheboiler.Iftheexpansiontankis
notconnectedtothesuppliedconnectiondamagetotheboilermayoccur.
Note:
The solo boilers Q85S, Q130S, Q175S and Q205S can be provided with an optional
internalthreewayvalve.Whenthisvalveisinstalledintheboiler,theboilerisprovided
with an expansion tank connection. This pipe is connected with the three way valve
and boiler pump.
Fortheboilertofunctioncorrectly,itisnecessarytoconnecttheexpansion
tanktotheexpansiontankconnectionontheboiler.Iftheexpansiontankis
notconnectedtothesuppliedconnectiondamagetotheboilermayoccur.
SeetheRinnaiBoilerApplicationsManualforfurtherinformationregardingplacement
of the expansion tank in the system. See the Rinnai 3-way valve indirect tank
installationmanualforfurther information regarding the installation of the 3-way valve
indirect tank kit.
6.3  Underoorheatingsystem(plasticpipes)
When using oxygen-permeable pipes, e. g. for oor heating systems, you must
separate the system using plate heat exchangers.
Norecoursecanbemadetothetermsofthewarrantyintheeventoffailure
toobservetheregulationspertainingtoplasticunderoorheatingpipes.
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