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 qualied 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 qualied
installer, service technician or the gas supplier.
Pictured: E75CN, E110CN
E75CP, E110CP
In the Commonwealth of Massachusetts this boiler must be
installed by a licensed Plumber or Gas Fitter.
WARNING!
If you do not follow these instructions exactly, a re or explosion may
result causing property damage, personal injury or loss of life.
- 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.
Address: 103 International Drive, Peachtree City, GA, 30269
These installation instructions contain important information for the safe installation, start-up and maintanance of
boilers with capacities 75,000 through 110,000 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.
12.2 Testing the Ignition Safety shut off device 51
12.3 Checking for contamination 52
12.4 Checking of the zero pressure control 53
12.5 Checking the O
12.6 Measuring the ionization current 55
12.7 Installing the casing 55
13 Maintenance 56
13.1 Periodic examination of venting and boiler 56
13.2 Inspection 56
13.2 Maintenance activities 58
13.3 Warranty 60
14 Parts of the boiler 61
15 Blocks and errors 62
16 Other errors 86
17 Spare parts 92
18 Parts list vent system 102
19 Common venting guidelines 103
Appendix A Outdoor Reset Sensor Data 104
Please observe these instructions in the interest of your own safety.
1.1 Designated use
The boiler is designed for heating water for a central heating system and 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 denitions
The following dened 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:
DANGER
Indicates the presence of hazards that will cause severe personal injury, death or
substantial property damage.
WARNING
CAUTION
CAUTION
NOTICE
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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 denitions
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 insufcient 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.
- 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 classication.
-
Only use the boiler with the accessories and spare parts listed.
- Other combinations, accessories and consumables must only be used if they are
specically 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 specically 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.
- The technical rules laid down by the gas utility company concerning the connection
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
WARNING
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 appliance.
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 efciency. 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 salt bedding exchangers, reverse
osmosis, D.I., or distilled water to soften the water to ll the heating system.
– Do not use inhibitors or other additives unless approved by Rinnai for that
purpose!
– When frost protection of the heating system is desired, only use Rinnai-approved
antifreezes, Noble Noburst Aluminum, or Rhomar RhoGard Aluminum Safe MultiMetal.
– 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 and chapter 10 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
– Digital manometer, capable of reading both positive and negative pressure
(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.
For maintenance to the boiler you need, apart from standard tooling for space heating,
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.
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 (80.0 °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.
i
NOTICE
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 appliance and/or equipment and shall:
a) Be powered by the same electrical circuit as the appliance and/or equipment
such that only one service switch services both the appliance 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
approved air intake must be used. Installation shall be performed in strict compliance
with the manufacturer’s instructions. A copy of the installation instructions shall
remain with the appliance and/or equipment at the completion of the installation.
4) A metal or plastic identication plate shall be mounted at the exterior of the building,
four feet directly above the location of vent terminal. The plate shall be of sufcient
size to be easily read from a distance of eight feet away, and read “Gas Vent
Directly Below”.
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 productapproved air intake must be used. Installation shall be in strict compliance with
the manufacturer’s instructions. A copy of the installation instructions shall remain
with the appliance and/or equipment at the completion of the installation.
3 Description of the boiler
Room sealed boiler
The boiler retreives its combustion air from outside then
discharges the ue gasses to
the outside.
Condensing
Retrieves heat as much as
possible from the ue gasses. Water condensates on
the heat exchanger.
Modulating
Stepless higher or lower
burning according to the heat
demand.
The Rinnai E boiler is a room sealed, condensing and modulating central heating
boiler, with an integrated DHW fascility.
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 efciency. 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.
When an outdoor sensor is connected to the boiler it will operate weather dependantly
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 appliance type: Rinnai E110CN
E = Type
110 = Nominal load in (x1000) BTU
C = C = Combi
N = Natural Gas (P = Propane Gas)
Different boilertypes:
Combi boiler with integrated DHW fascility
E75CN E110CN
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.
- The room where the boiler will be installed 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 boiler 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
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
- Lay the boiler on its back during unpacking. Remove the casing from the
boiler. This part can be left apart during installation. It must be placed on the
boiler and xed with the screw behind the door and in the 4 quick releases
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 sufcient 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 supplied with the
boiler documentation. 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.
Top of boiler2" / 502" / 5010" / 250
Back of boiler0"0"0
Front of boiler6" / 1506" / 15024" / 600
Left side of boiler2" / 502" / 502" / 50
Right side of boiler2" / 502" / 502" / 50
Floor / Ground12" / 30012" / 30030" / 762
Vent 0"0"0"
clearances to the boiler table 3
Minimum required clearances
to non-combustibles
ll types
Recommended
service clearances
ll types
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
Display indication at start-up22.t32.t22.tP32.tP
Q
Output non-condensing CH
n
Q
Output EN677 efficiency CH
n
Q
Output AFUE CH
n
Efficiency at 98.6/86°F (36/30°C) part load,
Hs, EN677 CH
AFUE according IBR
(at full load)
O
2
Electr. power consumption max.W
Electr. power consumption stand byW
CurrentV/Hz
Fuse ratingA
Degree of protection acc. EN 60529
Weight (empty)
Water content CH
Water content DHW
After run time pump CHmin
After run time pump DHWmin
- The central heating circuit pipes.
These must 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;
- Cold and hot water pipes for domestic hot water (DHW).These consist of 3/4" (15 mm) copper pipe and can be connected to the installation
by means of 1/2" M-NPT adapter ttings. See further chapter 6.5;
- The condensation drain pipe.
It consists of an oval 1" (22 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.
The pipe to be connected to the boiler must be cleaned before connecting in
i
NOTICE
order to prevent dirt from entering and damaging the boiler.
i
i
i
i
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
NOTICE
NOTICE
NOTICE
NOTICE
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.
Rinnai supplies specic Plumbing Kits with each boiler type, which must be tted
NOTICE
NOTICE
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 substitute
for a dirt trap.
- Install shut-off valves immediately before and after the dirt particle lter to allow
the lter 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 tratment additives to the system, such as inhibitors
or glycol.
- Position 4 (gure 6) is the supply connectionfor an idirect tank when used with the
optinal 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. Refer to the Rinnai Boiler Applications Manual for
an approved list of Rinnai system cleaners.
Compression fittings.
Parts:
1. Nut
2. Ferrule
3. Fitting
Fitting instructions:
1. Push the com ple te
21
2. Turn the nut handtight
- Refer to the installation template and chapter 5.3 for the pipe connection
dimensions.
- Fit the bronze adapter ttings, supplied with the boiler (g. 5, pos. 4) 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.
4
1
fitting over the pipe as
far as possible. Ferrule
sh ould be ov er the
pipe completely.
clockwise.
2
3
5
1. Plumbing kit
2. Safety valve
3. Filling connection
4. Bronze adapter ttings
5. Service valves
6. Flow 1 1/4"
7. Return 1 1/4"
8. External pump
6
7
3
3. Use 2 wrenches, one
to hold the fitting on
its place, the other
fo r tighten the n ut
clockwise in 3/4 turn.
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 and controlled.
If the installation resistance is over the stated value; the load will be adjusted until
an acceptable temperature difference between supply and return water has been
obtained. If, after this, the temperature difference is still not acceptable 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 an external circulation pump (g. 6, pos. 8) 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.
When using more than one boiler in an installation please refer to the cascade
installation instructions.
The boiler is designed to be used on pressurized heating systems only.
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 E boiler has a factory installed pressure switch type Low Water Cut
NOTICE
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
The E-Series boilers are equiped with an internal expansion tank.
The tank of the E75CN and E75CP is positioned inside the boiler casing. This
expansion tank has a pre-charge pressure of 14.5 PSI / 1 Bar and a capacity of 2.1
gallon / 8 litres.
The tank of the E110CN and E110CP is positioned directly beneath the boiler and
together with the casing forms a single entity with the boiler.
The casing can be removed by pulling forwards. The expansion tank has a pre-charge
pressure of 14.5 PSI / 1 Bar and a capacity of 3.1 gallon / 12 litres.
If a larger capacity expansion tank is needed for the installation a standard expansion
vessel should be tted additionally.
i
NOTICE
In that case choose an expansion tank volume, of which the summary is geared to
the installation’s water capacity. The pre-charge pressure depends on the installation
height above the expansion tank. Fit the expansion tank into the return pipe as close
as possible to the boiler. The extra expansion tank should be sourced locally. Please
refer to the expansion tank manufacturer for further information.
When using oxygen-permeable pipes, e. g. for underoor heating systems, the system
must be separated using plate heat exchangers.
NOTICE
i
DANGER
WARNING
DANGER
No recourse can be made to the terms of the warranty in the event of failure
to regard the regulations pertaining to plastic underoor heating pipes.
6.4 Gas supply connection
Only work on gas lines if you are licensed for such work.
If these instructions are not followed exactly, a re or explosion may result
causing property damage, personal injury or death.
Rinnai wall mounted boilers are built to run on Natural Gas or Propane Gas.
The gas type the boiler is suitable for is indicated on the packaging and on
the boiler by a blue label with Natural Gas or a green label with Propane Gas
and on the identication plate on the boiler.
First check the identication plate on the boiler for the suitable gas type.
Do not use the boiler for another type of gas than indicated on the
identication plate of the boiler. This will cause improper functioning and can
damage the boiler.
Natural gas: resume with chapter 6.4.1
Propane gas: resume with chapter 6.4.2
The gas supply connection must comply with local regulations or, if such
regulations do not exist, with the National Fuel Gas Code, ANSI Z 223.1.
For Canada, the gas connection must comply with local regulations or, if
such regulations do not exist, with the CAN/CSA B149.1, Natural Gas and
Propane Installation Code.
Pipe sizing for natural gas
Contact gas supplier to size the gas supply line and meter.
Gas piping
A sediment trap must be installed upstream of the gas controls.
The boiler gas pipe is equiped with external 3/4" M-NPT thread, onto which the tail
piece of the gas shut off valve can be connected. Use appropiate sealing.
The connection to the boiler must include a suitable method of disconnection and a gas
control valve must be installed adjacent to the boiler for isolation purposes. The nominal
inlet gas pressure measured at the boiler should be 7" W.C. (18 mbar) for Natural gas
(Gas A). Maximum pressure with no ow (lockup) or with the boiler running is 10.5
inches W.C. Minimum pressure with the gas owing (verify during boiler startup) is
5.0 inches W.C.
The gas pipe must be tted to the gas valve free from any strain.
NOTICE
i
DANGER
NOTICE
i
NOTICE
i
Make sure that the gas pipe system does not contain dirt, particularly with
new pipes.
Always check the safety of the gas pipe system by means of a bubble test
using leak-search spray.
The boiler and its individual shut off 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 (3.5kPa).
The boiler must be isolated from the gas supply piping system by closing its
individual manual 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).
The gas supply connection must comply with local regulations or, if such
regulations do not exist, with the National Fuel Gas Code, ANSI Z 223.1.
For Canada, the gas connection must comply with local regulations or, if
such regulations do not exist, with the CAN/CSA B149.1, Natural Gas and
Propane Installation Code.
Pipe sizing for propane gas
- Contact gas supplier to size pipes, tanks, and 100% lockup gas pressure
regulator.
Propane Supply Pressure Requirements
- Adjust propane supply regulator provided by the gas supplier for 14 inches W.C.
maximum pressure.
- Pressure required at gas valve inlet pressure port:
- Maximum 14 inches W.C. with no ow (lockup) or with boiler running.
- Minimum 8 inches W.C. with gas owing (verify during boiler startup).
Ensure that the high gas pressure regulator is installed at least 6 to 10 feet
upstream of the boiler.
Gas piping
- Use a gas shut off valve compatible with propane gases.
- A sediment trap must be provide upstream of the gas controls.
The boiler pipe is equiped with external 3/4" M-NPT thread, onto which the tail piece
of the gas shut off valve can be screwed. Use appropriate sealing.
Gas shut off valve onto boiler
gure 7
NOTICE
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DANGER
NOTICE
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NOTICE
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The connection to the boiler must include a suitable method of disconnection.
A gas control valve must be installed adjacent to the boiler for isolation purposes. The
nominal inlet working gas pressure measured at the boiler should be 12 inch W.C.
(30mbar) for Propane gas (Gas E).
The gas pipe must be tted to the gas valve free from any strain.
Make sure that the gas pipe system does not contain dirt, particularly with
new pipes.
Always check the safety of the gas pipe system by means of a bubble test
using leak-search spray.
The boiler and its individual shut off 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 (3.5kPa).
The boiler must be isolated from the gas supply piping system by closing its
individual manual 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).
The 3/4" NPT adapter tting with ow reducing valve must be tted in the cold water
connection.
A ow regulator valve is supplied with the boiler in a 3/4"NPT adapter tting. The
ow regulator valve ensures that a quantity of water is supplied which has a outlet
temperature of 120°F (assuming a cold water temperature of 45°F). The quantity of
water is virtually unaffected by the water pressure.
When there is a water pressure lower than 22PSI / 1.5 bar it is advisable to
remove the inside mechanism of the ow reducing valve.
6.6 Condensate drain pipe
This boiler produces condensate. Condensate must be drained otherwise the boiler
will not function and can cause property damage.
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i
NOTICE
NOTICE
NOTICE
The condensation drain pipe should be connected to a drain in the building by means
of an open connection. By this means the possibility of drain gases effecting the boiler
is prevented. The drain connection should have a minimum diameter of 1.3" / 32mm.
Install the condensation drain pipe according to the applicable rules and
regulations.
If the condensate outlet of the boiler is lower than the public sewage system a
condensate pump must be used.
The condensate produced by the boiler has a pH value between 3 and 4.
Install a neutralization unit if required by the local code. It is recommended, but not
required to install a condensate neutralizer.
Do not drain the condensation water to the external rain gutter because of
the danger of freezing and blockage of the drain.
Before putting the boiler into operation ll the condensate trap with 1.27
cups / 300 ml of water. If the boiler will be installed in a high temperature
installation such as baseboard, then ll the condensate trap with mineral oil
instead of water.
Use materials approved by the authority having jurisdiction. In absence of such
authority, PVC and CPVC pipe must comply with ASTM D1785, F441 or D2665.
Cement and primer must comply with ASTM D2564 or F493.
For Canada, use CSA or ULC certied PVC or CPVC pipe, ttings and cement.
Periodic cleaning of the condensate disposal system must be carried out. See
the Rinnai Boiler Application Manual for further information and for a piping
diagram for the condensate.
24
6.7 Vent system and air supply system
Provisions for combustion and ventilation air must be made in accordance with section,
Air for Combustion and Ventilation of the National Flue Gas Code, ANSI Z223.1,
or Sections 7.2, 7.3 of 7.4 of CAN/CGA B149.1, Installation Codes, or applicable
provisions of the local building codes.
- Do not store chemicals near the boiler or in rooms where the air is being supplied
to the boiler. See the list on page 10.
- Do not allow the ue gases of other appliances to enter the boiler.
- Keep cabinet free of moisture
i
NOTICE
In the event that the system has actuated to shut off the main burner gas,
do not attempt to place the boiler in operation. Contact a qualied service
agency.
6.7.1 Intake / Exhaust Guidelines
Refer to the specic instructions on your vent product for additional installation
requirements.
• You must use vent components that are certied and listed with this model.
• Do not combine vent components from different manufacturers.
• Venting should be as direct as possible with a minimum number of pipe ttings.
• Avoid dips or sags in horizontal vent runs by installing supports per the vent
manufacturer’s instructions.
• Support horizontal vent runs every four feet and all vertical vent runs every six
feet or in accordance with local codes.
• Vent diameter must not be reduced.
• The boiler is unsuitable to install on a common vent installation, see also chapter 19.
• Do not connect the venting system with an existing vent or chimney.
• Do not common vent with the vent pipe of any other water heater or appliance.
• Vent connections must be rmly pressed together so that the gaskets form an air
tight seal.
• Refer to the instructions of the vent system manufacturer for component assembly
instructions.
• If the vent system is to be enclosed, it is suggested that the design of the enclosure
shall permit inspection of the vent system. The design of such enclosure shall be
deemed acceptable by the installer or the local inspector.
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NOTICE
If it becomes necessary to access an enclosed vent system for service or
repairs, Rinnai is not responsible for any costs or difculties in accessing
the vent system. Warranty does not cover obtaining access to an enclosed
vent system.
Consult local and state codes pertaining to special building code and re department
requirements. Adhere to national code requirements.
Follow the listed maximum length of vent systems, which are boiler output dependent.
The maximum permissible lengths are listed in table 9, chapter 6.7.6.
Decide how to install the exhaust and air intake system. You can choose between:
- Concentric system (see page 26)
The concentric connection is provided standard initially.
The boiler concentric connection diameter is 3"/5" (80/125 mm), to which the venting and air
supply system can be tted, with or without elbow pieces. The maximum permissible pipe length
is displayed in table 9, chapter 6.7.6.
- Parallel system (see page 27)
The boiler can be converted to a parallel system with supplied adapters.
It is possible to use a parallel pipe connection of 2x 3". In this case a seperate supplied kit, with
2 vent adapters 3" (ø80mm), cover 5" (ø125mm), vent exhaust pipe and gaskets should be
tted instead of the concentric vent adapter on top of the boiler. See gure 12 for installation.
The maximum permissible pipe length is set out in table 9, chapter 6.7.6.
- Room Air System (outdoor combustion air)
The boiler can use room air for combustion. If this option is selected the boiler must rst be
converted to the Parallel system. A single exhaust pipe can then be tted. It is required to use
a room air lter when using indoor air for combustion. The maximum permissible pipe length
is set out in table 9, chapter 6.7.6.
NOTICE
i
ABCD
boiler conversion from concentric to parallel gure 12
A. 1. Push the 2 clips slightly outwards
B. 2. Pull the concentric adaptor out of the boiler
3. Press the cover in the connection at the back from inside out
C. 4. Push the 3" adapter into the connection at the back of the boiler (= air intake)
5. Pull the rubber seal around the bottom of the exhaust connector
6. Push the exhaust connector in the boiler, in the boiler exhaust pipe until 'CLICK'
7. Push the 5" cover over the exhaust connector in the 5" opening until 'CLICK'
8. Push the rubber plug in open position in the O2 measuring opening and close the stop.
9. Push the gasket around the top of the exhaust connector
10. Push the 3" exhaust adaptor in the exhaust connector.
D. Connect the parallel vent system.
We advise to install a vent system out of the venting system program supplied by
Rinnai (See chapter 19 Parts list Vent system). For further information about the
available components of the venting and air supply system we recommend you
consult Rinnai and the Installation instructions and parts list documentation.
6.7.4 Recommended vent/air intake terminal position
Terminals should be positioned as to avoid products of combustion entering openings into buildings or other vents.
Maintain 12” of clearance
above the highest
anticipated snow level
or grade or, whichever is
greater. Please refer to
your local codes for the
snow level in your area.
Terminal positions figure 14
RefDescriptionCanadian Installations - Direct Vent
A Clearance above grade, veranda, porch,
deck, or balcony
B Clearance to window or door that may
be opened
C Clearance to permanently closed window***
D Vertical clearance to ventilated sof-
t, located above the terminal within a
horizontal distance of 2 feet (61 cm) from
the center line of the terminal
E Clearance to unventilated soft***
F Clearance to outside corner***
G Clearance to inside corner***
H Clearance to each side of center line ex-
tended above meter/regulator assembly
I Clearance to service regulator vent outlet36 inches (91 cm)**
6 feet (1.83 m)3 feet (91 cm) above if within 10 feet (3
7 feet (2.13 m) [1]*7 feet (2.13 m)
12 inches (30 cm) [2]**
US Installations Direct VentUS Installations
6 inches (15 cm) for appliances < 10,000
Btuh (3 kW), 9 inches (30 cm) for appliances > 10,000 Btuh (3 kW) and <
50,000 Btuh (30 kW), 12 inches (91 cm)
for appliances > 50,000 Btuh (30 kW)
**
6 inches (15 cm) for appliances < 10,000
Btuh (3 kW), 9 inches (30 cm) for appliances > 10,000 Btuh (3 kW) and <
50,000 Btuh (30 kW), 12 inches (91 cm)
for appliances > 50,000 Btuh (30 kW)
m) horizontally
non Direct Vent
4 feet (1.2 m) below or to
side of opening; 1 foot (300
mm) above opening
4 feet (1.2 m) below or to
side of opening; 1 foot (300
mm) above opening
3 feet (91 cm) above if wit-
hin 10 feet (3 m) horizontally
[1] A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves
both dwellings.
[2] Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the oor.
* For clearances not specied in ANSI Z223.1/NFPA 54 or CSA B149.1, clearances are in accordance with local installation codes and the
6.7.4 Recommended vent/air intake terminal position
p
r
NOTICE
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CAUTION
!
CAUTION
!
NOTICE
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NOTICE
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NOTICE
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NOTICE
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Terminals should be positioned as to avoid products of combustion entering
openings into buildings or other vents.
Maintain 12” of clearance above the highest anticipated snow level or grade
or, whichever is greater. Please refer to your local codes for the snow level in
your area.
The termination shall be at least 4 feet (1,220 mm) for the US and 6 feet (1,830
mm) for Canada distance from electric meters, gas meters, regulators and
relief equipment. (for room air application only)
Horizontal vent systems should always be installed sloping towards the
boiler (min. 21 mm/m, 1/4 “/ feet), in order to avoid condensate retaining in
the vent system. With the condensate running back to the boiler the risk of
ice forming at the terminal is reduced.
The whole route of the vent system must be installed upwards, never
downwards, completely nor partly.
Place pipe supports every 4 feet (1219 mm) of horizontal run, beginning with
the support near the boiler to prevent movement in ttings and allow boiler
to be free from any strain or weight on boiler or ttings.
The terminal should be located where dispersal of combustion products is
not impeded and with due regard for the damage or discolouration that might
occur to building products in the vicinity (see g 14 and 15).
Approval Codes for Installation
Item DescriptionFlue MaterialUnited States
Plastic Vent and/or air
pipes and fittings
Plastic Pipe cement and
rime
Item DescriptionFlue MaterialManufacturerUS/CANFlue system
Stainless steel vent
systemsAL29-4C Heat Fab
Plastic Vent and/or air
pipes and fittings
Approval codes for installation of venting system table 7
In certain weather conditions condensation may also accumulate on the
NOTICE
outside of the air inlet pipe. Such conditions must be considered and where
necessary insulation of the inlet pipe may be required.
In cold and/or humid weather water vapor may condense on leaving the vent
terminal. The effect of such ‘water condensation’ must be considered.
The terminal must be located in a place not likely to cause a nuisance.
Use the Instructions of the Rinnai venting system for installation and service.
Cellular or Foam core PVC is not permitted for use with the boiler.
6.7.5 Dimensioning of the exhaust and air intake duct
DANGER
WARNING
NOTICE
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WARNING
NOTICE
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NOTICE
i
The wall mounted boiler must be vented and supplied with combustion and
ventilation air as described in this section.
Ensure the vent and air piping and the combustion air supply comply with
these instructions regarding vent system, air system, and combustion air
quality.
Inspect nished vent and air piping thoroughly to ensure all are airtight and
comply with the instructions provided and with all requirements of applicable
codes.
Failure to provide a properly installed vent and air system may cause severe
personal injury or death.
Use only the material listed in Rinnai's vent documentation for vent pipe, and
ttings. Failure to comply could result in severe personal injury, death or
substantial property damage.
Installation must comply with local requirements and with the National Fuel
Gas Code, ANSI Z223.1 for U.S installations or CSA B 149.1 for Canadian
installations.
For closet and alcove installation, CPVC material (instead of PVC) must be
used in a closet/alcove structure. Failure to follow this warning could result
in re, personal injury, or death.
All vent pipes must be connected and properly supported, and the exhaust
must be pitched a minimum of a 1/4” inch per foot back to the boiler (to allow
drainage of condensate). Please refer to the venting manufacturer's manual
to see if a larger pitch is required for specic venting sytems.
For the Room Air System, combustion air piping from the outside MUST BE
used. Use of combustion air from indoor rooms using louvers, plenums, or
any other devices is not authorized.
See the Rinnai Boiler Applications Manual for further information on venting.
In the table below you nd the maximum equivalent pipe length of the vent/air system
based on 3" diameter. These lengths are for single pipe (room air), twin pipe, and
concentric venting systems.
Boiler type3” Max Vent equivalent length3” Max Air equivalent length
E75100 feet100 feet
E110100 feet100 feet
Equivalent vent length table 9
Calculation of equivalent length vent system
Choose the vent type and ll out the corresponding table.
* When determining equivalent combustion air and vent length, add 6 feet for each
90° elbow, 3 feet for each 45° elbow, 5 feet for the concentric terminal in the Parallel
System, and 2 feet for the concentric terminal in the Concentric System .
x 6*
Number of
elbows 45°
x 3*
Concentric
terminal
dd 5 ft.
TotalMultiply with
factor
Total equivalent len
Equivalent
length
th
ft
Concentric system
Length concentric
tube, boiler to roof
horizontal
Number of
elbows 90°
x 6*
ftftftftft1.0ft
Number of
elbows 45°
x 3*
Concentric
terminal
dd 2 ft.
TotalMultiply with
factor
Total equivalent
length
Example of calculation:
Twin tube (parallel) with terminal Combustion air length : 24 ft with elbow 3 x 90°
Vent length : 24 ft with elbow 2 x 90°, elbow 2 x 45°
Calculation:
Equivalent Air Length : (24+3x6+2) x 0.5 = 23 ft
Equivalent Vent Length : (24+2x6+2x3+2) x 0.5 = 23 ft +Total = 46 ft.
The compensation factor eliminates or reduces the natural effect of derate of maximum
input caused by the resistance of the vent system and/or the impact of the altitude.
1. Determine the Compensation Factor Vent System CF(V) in the table below.
Boiler typeEq. length (ft)
E75E110
minmax
01000
112000
213002
314014
416026
618038
81100410
Compensation factor vent system CP(V) table 10
2. Determine the Compensation Factor Altitude CF(A) in the table below.
Any application or installation above 10,000 must be reviewed by Rinnai's
Engineering group. This is to ensure the product is installed and the overall
system is designed properly and that the units are commisioned properly.
Not involving of Rinnai's Engineering group would result in no support of the
product and no warranty.
3. Calculate the Compensation Factor Total CF(T):
CF(T) = CF(V) + CF(A)
The result is the setting for Parameter 73.
Change parameter 73 according to this result. See Chapter 10.1 how to change
parameters.
Example of calculation:
E110 Eq. lenth vent system (taken from previous example) 46 ft CF(V) = 6
Altitude 7,200ft CF(A) = 42 +
CF(T) = 48
Parameter setting (Par. 73) = 48
Do not overcompensate the boiler by setting a higher value than calculated,
otherwise the boiler could be seriously damaged.
When using indoor air, Rinnai strongly recommends the use of an indoor air
lter, P/N 808000025.
This boiler requires adequate combustion air for ventilation and dilution of ue gases.
Failure to provide adequate combustion air can result in unit failure, re, explosion,
serious bodily injury or death. Use the following methods to ensure adequate
combustion air is available for correct and safe operation of this water heater.
Important: Combustion air must be free of corrosive chemicals. Do not provide
combustion air from corrosive environments. Appliance failure due to corrosive air is
not covered by warranty.
Combustion air must be free of acid forming chemical such as sulfur, uorine and
chlorine. These chemicals have been found to cause rapid damage and decay and
can become toxic when used as combustion air in gas appliances. Such chemicals
can be found in, but not limited to bleach, ammonia, cat litter, aerosol sprays, cleaning
solvents, varnish, paint and air fresheners. Do not store these products or similar
products in the vicinity of this water heater.
Unconned Space:
An unconned space is dened in NFPA #54 "as a space whose volume is not less
than 50 cubic feet per 1000 Btu/hr (4.8 m3 per kW per hour) of the aggregate input
rating of all appliances installed in that space. Rooms communicating directly with
the space in which the appliances are installed, through openings not furnished with
doors, are considered a part of the unconned space." If the “unconned space”
containing the appliance(s) is in a building with tight construction, outside air may
still be required for proper operation. Outside air openings should be sized the same
A conned space is dened in the NFPA #54 as "a space whose volume is less than
50 cubic feet per 1000 Btu/hr (4.8 m3 per kW per hour) of the aggregate input rating
of all appliances installed in that space." A conned space must have two combustion
air openings. Size the combustion air openings based on the BTU input for all gas
utilization equipment in the space and the method by which combustion air is supplied:
Using indoor air for combustion
Using outdoor air for combustion
Louvers and Grills
When sizing the permanent opening as illustrated in gure 17, consideration must be
taken for the design of the louvers or grills to maintain the required free area required
for all gas utilizing equipment in the space. If the free area of the louver or grill design
is not available, assume wood louvers will have 25% free area and metal louvers or
grills will have 75% free area. Under no circumstance should the louver, grill or screen
have openings smaller than ¼”.
Example:
Wood: 10 in x 12 in x 0.25 = 30 in2
Metal: 10 in x 12 in x 0.75 = 90 in2
Location
To maintain proper circulation of combustion air two permanent openings (one up-
per, one lower) must be positioned in conned spaces. The upper shall be within 12
inches of the conned space and the lower opening shall be within 12 inches of the
bottom of the conned space. Openings must be positioned as to never be obstructed.
Combustion air provided to the appliance should not be taken from any area of the
structure that may produce a negative pressure (i.e. exhaust fans, powered ventilation fans).
When using air from other room(s) in the building, the total volume of the room(s) must
be of adequate volume (Greater than 50 cubic feet per 1000 Btu/hr). Each Combustion
air opening must have at least one square inch of free area for each 1000 Btuh, but
not less than 100 square inches each.
Using Outdoor Air For Combustion
Outdoor air can be provided to a conned space through two permanent openings,
one commencing within 12 in. (300mm) of the top and one commencing within 12”
(300mm) of the bottom, of the conned space. The openings shall communicate to
the outside by one of two ways:
directly through horizontal ducts
indirectly through vertical ducts
When communicating directly with the outdoors through horizontal ducts,
each opening shall have a minimum free area of 1 in2/2000 Btu/hr (1100 mm2/
kW) of total input rating of all appliances in the conned space.
Note: If ducts are used, the cross sectional area of the duct must be greater
than or equal to the required free area of the openings to which they are con-
nected.
When communicating indirectly with the outdoors through vertical ducts,
each opening shall have a minimum free area of 1 in2/4000 Btu/hr (550 mm2/
kW) of total input rating of all appliances in the conned space. Combus-
tion air to the appliance can be provided from a well ventilated attic or crawl
space.
The electrical connections to the boiler must be made in accordance with all applicable
local codes and the latest revision of the National Electrical Code, ANSI/NFPA-70.
Installations should also conform with CSA C22.1 Canadian Electrical Code Part 1
if installed in Canada.
Devices such as, outdoor sensor, room thermostat or temperature control, temperature
sensor or thermostat and an external pump are all connected to the internal connection
terminal. The connection terminal is situated behind the Control Tower.
Connecting incoming power
Install a 120V main switch next to the boiler as service main switch of the boiler.
Lead the cable through the back part of the boiler using a strain relief and lead the
cable through the cable supports to the Control Tower.
Connect a power supply cable to the cable harness terminal strip that connects to
both the power switch on the front of the Control Tower and the terminal strip with
positions 1, 2, and 3 on the inside of the Control Tower.
The boiler must be electrically grounded in accordance with local codes, or
in absence of local codes, with the National Electrical Code, ANSI/INFPA 70
and/or the CSA C22.1, Electrical Code.
CAUTION
CAUTION
NOTICE
i
RISK OF ELECTRIC SHOCK.
Once the main power supply is on then there is 120V on terminals 1 to 12 if the main
switch next to the boiler is switched on.
- No changes may be made to the wiring of the boiler;
- All connections should be designed in accordance with the applicable
regulations;
The Rinnai room thermostat and controls must be connected to their allocated
connections. All other types or makes of room thermostats or controls which
are used must have a Volt free contact.
When using an on/off thermostat or control, it is possible that an anticipating resistance
must be calibrated in order to prevent too high temperature uctuations. As a standard
rule this means mercury thermostats. This resistance wire is present in the Control
Tower and must be connected to clamps 23 and 27. The anticipating resistance in
the room thermostat has to be set at 0.11 A.
For more detailed questions regarding the components which are not supplied, the
distributor should be contacted.
Connection terminal E-Series
CAUTION
!
Connection terminal gure 19
main power
supply
120 Volts for
external pump
CAUTION
Make sure that the power consumption of each of the terminals
4-5-6, 7-8-9 and10-11 does not exceed 230W or 2 Amp.
The boiler is provided with a fully automatic microprocessor control, called CMS
Control Management System. This control simplies operation by undertaking all
major control functions. Initially when power to the unit is switched on it will remain on
standby. There is no indication LED on, until one of the program buttons is pressed.
The control panel display will show the relevant state. When the installation is empty
the display will show FILL.
The various parameters can be called up in two ways:
The Good-state or standard read out
The rst way shows a simple display read out.
The boiler in operation will always show 'Good'. When a message is necessary this
will be shown instead of Good.
Technical read out
The second way is a technical read out. In normal situations the following will be shown:
Example
Example
• on the left the status in which the boiler is active;
• on the right the supply temperature in °F;
Alternately indicated by:
• the water pressure in the installation in PSI.
When a message (error or blocking code) is necessary this will be shown instead of
the technical read out.
i
NOTICE
To switch over from the Good-state to the Technical read out (and vice versa):
- Press the STEP-button for 5 seconds.
When the system has been lled the automatic de-aeration program starts, when a
program has been selected, by pressing the button for Central Heating, DHW or pump
program (, of ). The program takes 17 minutes and stops automatically.
After this the unit will function normally. (See also 'Filling and de-aerate the boiler and
installation, chapter 9).
On a call for heating or hot water the control system will select the required water
control temperature. This water temperature is called the T-set value. On a call for
central heating the boiler ignites rst at low input. The input is then changed slowly to
match the load required. The boiler operates in this way to avoid excessive water noises
and temperature overshoot. On a call for domestic hot water supply the T-set value
of central heating return water temperature is monitored. Depending on the amount of
domestic water which is withdrawn from the DHW fascility, the central heating return
water temperature, from which the input is adjusted, will vary.
Operation indication
(in the rst display position by technical read out)
When the pump is
switched on continuously
it can lead to undesired
heating up of the central
heating system during the
summer.
3
4
5
Boiler control panel figure 16
Only qualied personel who are trained for servicing these boilers are permitted
to make alterations in the controller to calibrate the boiler to the installation.
1. Display. See previous page for further information.
2. ON-OFF Switch (Placed separately next to the boiler)
This switch turns the power supply to the boiler on or off.
Only turn the boiler off using this switch, when the burner is off..
3. Central Heating program button.
Switching the Central Heating on or off (LED on/off);
4. Hot Water program button.
Switching the Domestig Hot Water (DHW) facility on or off (LED on/off);
5. Pump program button.
adjusts the pump to continuous water circulation in the central heating system (LED
on), or according to the pump overrun times on the relevant programs (LED off);
6 Mode-button.
After briey pressing, a selection of the data chapters can be retrieved.
After pressing for 5 seconds it is possible to enter the code as described in chapter
11.3;
7 Step-button.
After briey pressing, the water pressure can be retrieved and pages per chapter
can be retrieved.
After pressing for 5 seconds it switches from the Good-state to technical read out
and vice versa;
8 Reset-button.
After briey pressing, for:
- unlocking errors;
- ending the access code;
After pressing for 5 seconds an operating stop is made, for example, for activating
the automatic venting program.
7
6
8
Some buttons have other functions.These functions are only active when according
to the procedure described in chapter 10, adjustment has to be changed or data must
be retreived from the CMS. The other functions are:
3. Central Heating program button : + function;
4. Hot Water program button: - function;
5. Pump program button : store-function, which means that by means
9 Starting up: Filling and de-aerating the boiler and installation
!
!
!
CAUTION
!
NOTICE
i
NOTICE
i
WARNING
CAUTION
Observe the following rules of safety:
- All work on the unit must take place in a dry environment.
- Rinnai units may never be in operation without their housing, except in connection
with maintenance or adjustments (see Chapter 12 and 13).
- Never allow electrical or electronic components to come into contact with water.
NOTICE
Carry out the following tasks in connection with maintenance, etc. to an alreadyinstalled unit:
- Shut down all programs
- Close the gas shut off valve
- Shut off the power at the main power switch
- Close the service valves (system supply and return)
NOTICE
Take note of the following when maintenance or adjustments are needed:
- The unit must be able to function during these activities; for this reason, the unit’s
supply voltage, gas pressure and water pressure must be maintained. Ensure that
this is not a source of potential danger during these activities.
Following maintenance or other activities; always check the installation of all
parts through which gas ows (with bubble test using leak-search spray).
9.1 Requirements of the water system
WARNING
WARNING
Before lling the heating system, the complete system, including all zones, must be
thoroughly cleaned and ushed to remove sediment. Flush until clean water runs free
of sediment. Rinnai suggests using an approved system cleaner to ush the system,
but not the boiler. See the Rinnai Boiler Applications Manual for furtherinformation
and for a list of approved cleaners.
Approved antifreezes are Noble Noburst Aluminum, Rhomar RhoGard Aluminum Safe
Multi-Metal. Never use salt bedding exchangers, reverse osmosis, D.I., or distilled
water for lling the heating system.
Do not use petroleum-based cleaning or sealing compounds in the boiler
system. Damage of seals and gaskets in boiler and system could occur,
resulting in substantial property damage.
The central heating installation needs to be lled with potable water.
Use only potable water or approved glycol for lling the heating system.
When the water hardness of the lling water exceeds > 10.5 gpg (200 mg/L)
and the volume of the installation > 20L/kW (5.2 gallons/3,412 BTU) the water
has to be treated until below the maximum value of 10.5 gpg (200 mg/L).
The pH value of the installation water must be between 6.5 and 8.5.
Check the The pH value using a digital pH meter that has been properly calibrated
or by having the water analyzed by a water treatment company.
If pH differs from above, contact Rinnai engineering for further assistance.
Failure to adhere to the water quality requirements will result in a void of war-
ranty.
42
Freeze protection
!
Freeze protection for new or existing systems must use glycol that is specially
formulated for this purpose. This includes inhibitors, which prevent the glycol from
attack the metallic components. This should be for multi-metallic components.
Make certain to check that the system uid is correct for the glycol concentration and
inhibitor level. The system should be tested at least once a year and as recommended
by the producer of the glycol solution.
NOTICE
i
WARNING
NOTICE
i
Use only Rinnai approved inhibitors. See the Rinnai Boiler Applications Manual
for an approved list of inhibitors.
Use only inhibited propylene glycol solutions, which are specially formulated
for central heating systems. Ethylene glycol is toxic and can attack gaskets
and seals used in the boiler and system. Approved glycols ae listed in the
Rinnai Boiler Applications Manual.
Additives in the installation water are not permitted.
9.2 Filling the heating system
For lling or topping up the installation you use the lling loop according to the following
procedure:
1 Switch on the power supply;
2 The display will show FILL;
3 All functions off (heating , DHW and pump );
4 Push briey the 'STEP'-button: P XX (XX = water pressure in PSI);
5 Open the lling loop (Indication on display increases);
6 Fill up slowly to 22 to 25 PSI;
7 STOP appears on the display;
8 Close the lling loop;
9 De-aerate the complete installation, start at the lowest point;
10 Check the water pressure and if necessary top it up;
11 Close the lling loop;
12 Activate the functions in use (heating , DHW and/or pump );
13 If A XX appears on the display, wait for 17 minutes;
14 Check the water pressure and if necessary top it up to 22 to 25 PSI
15 Close the lling loop;
16 Press the ‘STEP’-button;
17 Be sure that the lling loop is closed.
18
After the automatic de-aeration program (A XX) is nished the boiler will return to
the Good state or Technical read out.
Check the water pressure regularly and top off the installation when necessary.
The working pressure of the installation should be between 22 and 25 PSI when the
system is cold.
It can take a while before all air has disappeared from a lled installation.
Especially in the rst week noises may be heard which indicate the presence
of air. The automatic air vent in the boiler will remove this air, which means
the water pressure can reduce during this period and therefore topping off
with water will have to be done.
During normal use the following messages can occur with the necessary follow up:
Water pressure is too low (<10 PSI), FILL
indication remains continuously visible,
the boiler is taken out of operation. The
installation needs to be topped off.
9.3 Hot water supply
Apply the water pipe pressure to the DHW fascility (open main valve and/or stop
valve of the safety group).
Vent the DHW fascility and the hot water installation by opening a hot water shut off
valve. Leave the shut off valve open for as long as required until all air has disappeared
from the DHW fascility and the pipes and only water is owing from the shut off valve.
Water pressure is too low (<14,5 PSI),
flashing FILL will alternate with indication
of water pressure, boiler power of 50%
is possible. The installation needs to be
topped off.
Water pressure is too high (>52,2 PSI),
if HIGH indication remains continuously
visible, the boiler is taken out of operation.
The installation pressure needs to be
decreased by draining water.
A. This appliance does not have a pilot. It is equipped with an ignition device which automatically
lights the burner. Do NOT try to light the burner by hand.
B. BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next to the floor
because some gas is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
- Do NOT try to light any appliance.
- Do NOT touch any 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.
C. Use only your hand to push in or turn the gas control knob. Never use tools.
If the knob will not push in or turn by hand, don’t try to repair it, call a qualified service technician.
Force or attempted repair may result in a fire or explosion.
D. Do not use this appliance if any parts have 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.
OPERATING INSTRUCTIONS
1. STOP! Read the safety information above this label.
2. Turn off al electrical power of the appliance.
3. Set the thermostat or other operating control to the lowest setting.
4. This appliance is equipped with an ignition device
which automatically lights the burner.
Do NOT try to light the burner by hand.
5. Close main gas shut off valve.
6. Wait (5) minutes to clear out any gas. Then smell for
gas. Including near the floor.
If you smell gas, STOP! Follow “B” in the safety
information above on this label.
If you don’t smell gas, go to the next step.
7. Open main shut off valve.
8. Set the thermostat or other operation control to desired setting.
9. Turn on all electric power to the appliance.
10. If the appliance will not operate, follow the instructions “To Turn Off Gas To Appliance” and call your
service technician or gas supplier.
Manual Gas Valve (Main valve)
CLOSE
OPEN
TO TURN OFF GAS TO APPLIANCE
1. Turn off all electric power to the appliance if service is to be performed.
2. Set the thermostat or other operating control to the lowest setting.
When the boiler is installed it is ready for use. All adjustments of the boiler control
are already pre-programmed for a heating system with radiators/convectors with a
supply temperature of 185°F. The adjustments are described in the Parameter chapter
on page 44.
In certain cases parameters have to be altered in case of :
- Lower supply temperature
- High altitude/long vent length
Read through the Parameter chapter to adjust the boiler to its installation.
Contact Rinnai in case of doubt.
i
NOTICE
Only qualied personel who are trained for servicing these boilers are permitted
to make alterations in the controller to calibrate the boiler to the installation.
11.1 Altering adjustments
STEP 1
STEP 2
STEP 3
STEP 4
Press the Mode-button for 5 seconds.
The display shows COdE followed by an arbitrary number;
Press by means of the + or the - button until the code C123 is shown;
Press the STORE-button to conrm the code (code blinks1 x).
Now you have acces to the installer level. There are 4 chapters:
• Parameters
• Information chapter (no adjustments possible)
• Service chapter
• Error-chapter (no adjustments possible)
The content of the chapters is described on the following pages.
Press briey the MODE-button to select one of the 4 chapters, i.e. PARA;
Press once or more briey on the STEP-button to select a Parameter
(parameter visible on the left, value on the right) ;
Alter the value, if necessary/possible, by means of the + or the - button
Press briey on the STORE-button to conrm the alteration.
When you have to change more values, repeat from step 5.
Press once or more on the MODE-button until StBY or Good is shown:After a few seconds the text StBY will be replaced by the technical read-out
or Good-state (Depending from the position the acces code is entered)
When you want to return from an arbitrary position to the original read out
press once or more on the MODE-button until StBY is shown.
If no single button is used within 20 minutes the display will return automatically to its
original read-out (Good state or technical read out)
46
Parameter Mode
x
t
)
r
4
)
s
W
PARAFACTORY
....
1186°Fmaximum supply temperature CH68 - 186°F
2*00type of CH installation:
3max.maximum power CH in kW (.. x3415 = .. BTU/hr)min-ma
4*00control principal with on / off thermostat:
5*2.3heating curve K-factor (see also heating curve graph
6*1.4heating curve exponent (see also heating curve graph)1.1 - 1.4
7*14°Fheating curve climate zone (see also heating curve graph)-4 - 32°F
10*0°Ffine adjustment heating curve day temperature-8 to 10°F
11*0°Ffine adjustment heating curve night temperature-8 to 10°F
1410°F/min.gradient speed °F/min.0 - 28°F/min.
15*00Booster after night decrease*:
2326°FFrost Temperature-4 to 50°F
2732°FMinimum T-set CH0 - 158°F
31132°FDHW temperature 68 - 176°F
3620Type of three way valve DHW fascility
43max.Maximum power DHW in kW (.. x3415 = .. BTU/hr)min-max
49100%Maximum pump capacity heating100 %
730Altitude and venting CFT. See chapter 6.7.70 - 100
8900Address
9001Display reading
....
DESCRIPTION
01 DO NOT USE
radiators with large surface areas or underfloor heating as additional heating:
T max. supply 158°F K factor heating curve 1.8; gradient 10°F/min; gear differential 10°F
under floor heating with radiators as additional heating:
T max. supply 140°F; K factor heating curve 1.5; gradient 8°F/min; gear differential 8°F
full under floor heating:
T max. supply 122°F; K factor heating curve 1.0; gradient 6°F/min; gear differential 6°F
100 % on / off thermostat00
100 % on / off weather dependan
no00
yes01
VC 2010 / VC 8010x0
Flowswitch2x
No function-01
Bus thermostat 00
°C and Ba
°F and PSI01
02
03
04
01
0.2 - 3.5
00
RANGE
Info Mode
INFO
1°Fsupply water temperature T1
4°Freturn water temperature T2
5°FDHW temperature T3
7°Foutdoor temperature T
8°Fflue gas temperature T5 (optional sensor
16%actual power in %
17kWactual power in kW (.. x3415 = .. BTU/hr)
18kWactual load in kW (.. x3415 = .. BTU/hr)
20indication bus communication
21GJconsumption total in GJ (.. x 33 = .. m3)
22GJconsumption CH in GJ (.. x 33 = .. m3)
23GJconsumption DHW in GJ (.. x 33 = .. m3)
24htotal number of burner run hour
25hnumber of burner run hours CH
26hnumber of burner run hours DH
32htotal number of hours counter
37htotal number of run hours pump CH and DHW
46hwithin how many hours is service required
1OFFboiler in operation with burner function o
2OFFfan adjustable and burner of
3OFFpump adjustable with burner o
4OFFshowroom position ON = active and OFF = non activeON - OFF
VALUE
....
DESCRIPTION
RANGE
OFF - max.
OFF - max.
OFF - max.
Error Mode
ERRO
Err.L - Err.5Last saved error until 5 last previous error
1error cod
2operation status boile
3°Fsupply water temperature T1
4°Freturn water temperature T
5kWload (.. x3415 = .. BTU/hr)
6%pump capacity
Parameter-, Info-, Service- and Error-chapters Table 12
VALUE
DESCRIPTION
* Most of the data in this table can be requested by the RS100. Most of the
NOTICE
i
adjustments which are stated in this table are unnecessary when in combina-
tion with the Rinnai RS100 thermostat and will be taken care of by the RS100
itself and do not have to be adjusted. For further information regarding to the
RS100 thermostat refer to the Rinnai RS100 installation manual.
To activate the factory settings again please follow the next procedure (Note: all altered
adjustments will be set back to their orignial factory settings):
- Select, when necessary, the technical read out;
- Select with the MODE-button chapter PARA;
- Press the STORE-button.
The word "Copy" will appear and the factory settings are active again.
11 Isolating the boiler
Some situations require turning the entire boiler off.
By switching off the three buttons with the LED's for central heating, hot water and
pump program (
of the boiler, which means the circulation pump and the three-way valve are activated
once every 24 hours in order to prevent these parts from seizing up.
, or ), the boiler is switched off. Do not shut off the power
CAUTION
!
In the event of frost danger during an isolated boiler it is advisable to drain
the boiler and/or the installation.
Work on the boiler must be carried out by a competent person, using
i
NOTICE
correctly calibrated instruments with current test certication.
These installation instructions are intended for professional installers, who
have the necessary knowledge and are approved for working on heating and
gas systems.
Before the boiler is red, ensure that the boiler and the system are well de-aerated
and free of air. Purge the gas line between the gas meter and the boiler.
NOTICE
i
DANGER
!
The boiler and its individual shut off 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 (3.5kPa).
To commission the boiler the casing has to be removed.
-
remove the 4 screws A,B,C and D in the quick releases of the casing (gure 17);
- remove the screw E behind the door on the front of the casing (gure 17);
- remove it towards the front.
The boiler settings, such as burner pressure and adjustment of the air quantity are
unnecessary, due to the fact that the boiler operates with a zero pressure control.
This means the correct gas quantity is controlled by the suction operation of the fan.
The ne adjustment which is carried out at the factory is once-only, which means
that adjusting of these values is unnecessary. Only in case of replacing of the gas
valve, venturi and/or fan, the zero pressure and the incorrect O2 adjustment has to
be checked and, if necessary, adjusted at the right value.
Always check the installation of all parts through which gas ows (by bubble
test using leak-search spray)
During the commissioning of the boiler the Rinnai Installation, Commissioning, and
Prior to start-up of the boiler you must check the external tightness of the gas supply
valve and conrm this in the start-up report.
WARNING
DANGER
!
- Cover endangered positions before leak testing.
- Do not spray the leak testing agent onto cables, plugs, electrical connec-
tion lines or electronic circuit boards. Do not allow it to drip onto them
either.
Leaks may be caused to pipes and screw connections during commissioning
and maintenance activities.
- Carry out a proper leak test.
- Only use approved leak detection agents for leak detection.
- Disconnect the heating system from the power supply.
- Check the exterior tightness of new conduit sections up to and including the direct
sealing point on the gas burner tting. The maximum test pressure allowed on
the input of the gas burner tting is 14 inch W.C. (35mbar).
12.2 Testing the Ignition Safety shut off device
- Switch off system using the Central Heating button and the DHW button
- Disconnect the plug and socket connection of the ionization cable.
- Switch on the sytem using the Central Heating button and the DHW button.
- Press the MODE-button for 5 seconds.
- The display will show COdE followed by an arbitrary number;
- Select by means of the
- Press the Store-button to conrm the code (code blinks 1 x);
- Press the MODE-button until SERV is shown;
- Press the STEP-button once until 1 is shown;
alternately 1 and OFF will be shown.
- Press the
Check if the boiler does one start-up attempt and four restart attampts.
After the last start-up attempt, the boiler will lock out. The gas valve is shut off.
The E02 code is blinking in the display.
- Connect the plug and socket connection of the ionisation cable.
- Press the reset button.
button once;
or the button the code C123;
- Check if the boiler starts-up.
WARNING
Do not touch the inside of the igntion cable while it is disconnected during
start up of the boiler.
In order to be able to check the boiler for contamination in the following running
years it is advisable to measure the maximum air displacement in the boiler
when putting the boiler into operation. This value can be different with each
type of boiler.
In order to be able to measure this value follow the next procedure:
- Press the MODE-button for 5 seconds.
- The display will show COdE followed by an arbitrary number;
- Select by means of the
- Press the Store-button to conrm the code (code blinks 1 x);
- Press the MODE-button until SERV is shown;
- Press the STEP-button until 2 is shown;
alternately 2 and OFF will be shown.
- Turn open the upper measuring nipple on the gas valve (g. 18);
- Connect the hose of the digital pressure gauge to the upper measuring nipple of
the gas valve
or the button the code C123;
Check point contamination
figure 18
NOTICE
i
- Press the
The fan will function to its maximum revolutions (burner stays off)
- Measure the under pressure and write down this value.
At the next servicing visit this value may drop 20% of its original value on
the moment of installation. When this value is dropped more than 20% the
boiler needs maintanance.
The zero pressure control is set at the factory. To measure this value you need
a difference pressure gauge with a range of +0,2 to -0,8 mbar (+0.08 to -0.001”
W.C.). Follow the next procedure:
- Press the MODE-button for 5 seconds.
- The display will show COdE followed by an arbitrary number;
- Select by means of the
- Press the Store-button to conrm the code (code blinks 1 x);
- Press the MODE-button until SERV is shown;
- Press the STEP-button once until 1 is shown;
alternately 1 and OFF will be shown.
- Turn the upper measuring nipple on the gas valve open (g. 19);
- Connect the hose of the digital pressure gauge to the upper measuring nipple of
the gas valve
- Press the
The fan will function to its minimum revolutions (burner is active)
button until the minimum value is achieved;
or the button the code C123;
Check point contamination
figure 19
Adjustment zero pressure
figure 20
- Measure the negative pressure.
Value should be 0 to -4Pa (0 to -0.04 mbar or 0 to -0.016" W.C.).
- If the zero pressure deviates too much:
- Remove black cover of the gas valve
- Remove cap with Torx screwdriver (g. 20)
- Turn slightly the Torx screw behind the cap:
Turn left is positive pressure deviation
Turn right is negative pressure deviation
- Ending this procedure is done by pressing the Reset button.
- Proceed by checking the O2 value and correct it if necessary.
percentage is factory-set. This has to be checked at commissioning,
2
maintance and faults.
This can be checked by means of the following procedure:
- Remove the black cover of the gas valve by unscrewing the sealed screw.
- Put the boiler into operation and take care that it can deliver its heat;
Tip: If there is no demand for heat on CH, turn the hot water tap completely open
i
and measure the O2.
- Press the MODE-button for 5 seconds.
- The display will show COdE followed by an arbitrary number;
- Select by means of the
or the button the code C123;
- Press the Store-button to conrm the code (code blinks 1 x);
- Press the MODE-button until SERV is shown;
- Press the STEP-button once until 1 is shown;
alternately 1 and OFF will be shown.
checkpoint CO2
NOTICE
i
figure 21
- Calibrate the O2 meter ;
- Place the probe of the O
- Press the
button until the maximum value (in kW) is achieved;
meter into the check point (see g. 21);
2
The boiler will burn on full load (value on display in kW)
value in BTU/hr = x3415
- Check the O2 percentage:
Natural gas: full load: between 4.4% and 4.7% min. load: between (setting of full load +0.2%) and 6.0%
Propane: full load: between 4.8% and 5.1% min. load: between (setting of full load +0.2%) and 6.0%
Example:Full load set on 4.6% O
be between 4.8% and 6% O
(natural gas) then the minimum load setting should
2
2
Choose the right O2 value according the kind of gas (Natural Gas or Propane
Gas). Wrong adjustment may result causing property damage, personal
injury or death.
- Let the O
meter do its measuring procedure.
2
- Adjust, if necessary, the adjustment screw to correct the O2 value
(see g. 22).
adjustment screw CO
figure 22
2
Ending the O2 measuring procedure:
- Press the - button until OFF is shown (keep button pressed).
- Replace the black cover on the gas valve and x it with the screw.
54
12.6 Measuring the ionization current
- Switch off the system using the Central Heating button and the DHW button
- Disconnect the plug and the socket
connection on the probe and connect the
measuring device in series. See gure 23.
Select the µA direct current range on the measuring
device. The measuring device must have a resolution
of at least 1 µA.
- Switch on the sytem using the Central Heating button
and the DHW button.
- Press the MODE-button for 5 seconds.
- The display will show COdE followed by an arbitrary
number;
- Select by means of the
- Press the Store-button to conrm the code (code blinks 1 x);
- Press the MODE-button until SERV is shown;
- Press the STEP-button once until 1 is shown;
alternately 1 and OFF will be shown.
- Press the
The boiler will burn on full load (value on display in kW)
value in BTU/hr = x3415
- Measure the ionization. When the boiler is in full load the ionization current must
be > 4 µA and write down this value in the log book.
- Press the
- Switch off the system using the Central Heating button and the DHW button
- Disconnect the measuring device and restore the plug and the socket connection
on the probe.
button until the maximum value (in kW) is achieved;
button until OFF is shown (keep button pressed).
or the button the code C123;
Ionization test gure 23
12.7 Installing the casing
Installing casing gure 24
- Switch on the sytem using the Central Heating button and the DHW button.
- Install the cover on the boiler and clos all 4
- Tighten the 4 screws A,B,C and D in the quick releases (gure 24);
- Tighten the screw E behind the door on the front of the casing (gure 24);
Maintenance or changes to the boiler may only be carried out by a qualied
technician.
13.1 Periodic examination of venting systems and boiler
The inspection of the boiler and venting system should be done every 2 years and
full maintenance every 4 years or 4000 hours of operation, whichever occurs rst..
When doing this the circumstances of the boiler’s location must be taken into account.
From this one can determine whether to deviate from this advice.
NOTICE
Please contact Rinnai for further guidance on the frequency and service
requirements. Contact details can be found on the back page of this manual.
13.2 Inspection
Preparing the boiler for inspection
To carry out the maintenance activities please follow the next procedure:
- switch off the power supply;
- shut off the gas;
- valve off the boiler from the system using the boiler isolation valves in the plumbing
kit.
-
remove the 4 screws A,B,C and D in the quick releases of the casing (gure 25);
- remove the screw E behind the door on the front of the casing (gure 26);
- remove it towards the front.
- clean the casing with a cloth with a simple (non-abrasive) cleaning agent;
The fan unit and burner cassette (gure 27 to 29) (2 and 4 year maintenace)
- remove the electrical connection plug from the gas valve (1) and fan motor (2);
- loosen the nut (3) of the gas pipe under the gas valve;
- replace the gasket with a new one;
- loosen the front cross head screw (4) of the black plastic silencer;
- after this turn the two clamping rods (9 and 10) ¼ turn and remove them by pulling
them forward. Note the correct turning direction (red indicator. g. 29);
- slightly lift the fan unit and remove it towards the front of the heat exchanger;
- remove the burner cassette out of the fan unit;
- check the burner cassette for wear, pollution and possible cracks. Clean the burner
cassette with a soft brush and vacuum cleaner.
If burners are cracked replace the complete burner cassette;
- replace the gaskets between burner and fan unit and the gasket between fan
unit and heat exchanger;
- check the venturi and the gas-air distribution plate for pollution and clean this part,
if necessary with a soft brush and vacuum cleaner. If the air box contains a lot
of dirt it is plausible that the fan itself is dirty as well. To clean this, the fan has to
be removed from the hood and the venturi. Clean the fan with a soft brush and a
vacuum cleaner. Replace the gasket and ensure that all gaskets of the fan parts
are mounted correctly.
- check the heat exchanger for contamination. Clean this if necessary with a soft
brush and a vacuum cleaner. Prevent dirt falling down into the heat exchanger.
Flushing the heat exchanger from the top down is not permitted
Retting of the components is done in reverse order.
Make sure that during retting the clamping rods they are put in the right
position. They should be turned vertical.
If the boiler should activated with clamping rods in the wrong position it will
cause serious property damage, personal injury or loss of life.
Ignition electrode (4 year or 4000 hour maintenance)
The replacement of the electrode is only necessary when the electrode is worn off.
This can be checked by measuring the ionisation current. The minimum ionisation
current has to be higher than 4µA on full load.
If the inspection glass is damaged the complete electrode must be replaced.
Replace the ignition assembly after 4 years or 4000 hours, whichever occurs rst.
Replacement goes as follows:
- remove the electrical connections of the electrode;
- press the clips on both sides of the electrode to both sides and remove the complete
electrode;
- remove and replace the gasket;
Retting of the components is done in reverse order.
58
9
!
8
Siphon figure 30
13
14
11
12
Condensate trap and condensate tray (gure 30-32) (2 and 4 year maintenance)
Step 1: Condensate trap
- rst remove the screw (7);
- pull the condensation cup (8) downwards, out of the condensate tray (14)
Check this for impurities. If there is not a lot of impurities it is not necessary to
clean the condensate tray (Go to Step 3). If there is a lot of impurities in the cup
it is necessary to remove and clean the condensate tray according Step 2;
7
- check the O-ring (9) of the cup and replace if necessary;
- clean the parts by ushing it with clean water;
- grease the O-ring again with acid free O-ring grease to make tting easier;
- if there is a leak at the condensate trap (8) replace complete condensate trap by
S4421200;
Step 2: Condensate tray
- remove the plug from the ue gas sensor if present;
- turn the two short clamping rods (11 and 12) ¼ turn and remove them by pulling
them forward; Note the right turning direction (red indicator);
- lift the exhaust pipe (13) out of the condensate tray (14);
- press the condensate tray (14) carefully downwards and remove it by pulling it
forward;
- replace the gasket between condensate tray and heat exchanger by a new one;
- clean the condensate tray with water and a hard brush;
- check the condensate tray on leaks.
Condensate tray figure 31
DANGER
!
Clamping rods figure 32
DANGER
!
WARNING
Step 3: Retting is done in reverse order.
Note that all gaskets seals completely.
Make sure that during retting the clamping rods they are put in the right
position. They should be turned vertical.
If the boiler should activated with clamping rods in the wrong position it will
cause serious property damage, personal injury or loss of life.
Put the boiler into operation and check the O2 (see page 50).
If replacement by new gaskets and burner mentioned in this chapter is not done
within the service interval subscribed by Rinnai the boiler can be damaged and
will cause serious property damage, personal injury or loss of life.
Use only original spare parts supplied by Rinnai. If other parts will be used
the boiler can be damaged and will cause serious property damage, personal
injury or loss of life. Use of non-Rinnai parts will result in the void of warranty.
A detected error is indicated on the display by means of blocking or error messages.
A distinction should be made between these two messages due to the fact that bloc-
king can be of a temporary nature, however, error messages are xed lockings. The
control will try its utmost to prevent locking and will temporarily switch off the unit by
blocking it. Hereunder is a list of some messages.
Blocks with a number in the last 2 positions.
Block 01:
External safety contact cut off
Block 11:
Maximum T of ow and return sensor in central heating has repeatedly been exceeded. Du-
ring the block normal operation of the hot water supply is possible. The pump continues to operate
at minimum capacity during the block.
Block 12:
Maximum T of ow and return sensor in domestic hot water has repeatedly been exceeded.
During the block normal operation of the central heating installation is possible. During the block the
pump continues to operate at minimum capacity.
Block 60:
Incorrect parameter setting of the minimum or maximum power.
Block 67:
A T has been detected between ow and return sensor whereas the burner is not in operation.
After the T has disappeared the block will clear.
Block 85:
The control has not detected a water ow. The venting cycle is started. If during this cycle water
ow is detected, the venting cycle is ended and the burner is released.
Error 04: adjustment or error for voltage interruption
Error 05: adjustment
Error 12: fuse 24 volt/3AT faulty
Error 18: maximum ow temperature exceeded
Error 19: maximum return temperature exceeded
Error 28: number of revolutions not reported back from fan
Error 69: no or incorrect display
62
i
NOTICE
15.1 Blocks
The following pages describes more detailed follow up instructions for sol-
ving blockings, errors and practical circumstances. These instructions are
only for Rinnai trained installers and technicians.
An error, which has been detected, is indicated on the display by a block message.
Blocks can be temporary in nature. The controller will do everything possible to prevent
a system lock and temporarily switching off the boiler as a result of a block. Please
see below for a summary of blocks.
Blocks
15.1.1 Block 01
with a gure on the last 2 characters.
external safety contact broken
external safety
contact is active
rectify error as a result of which by determining
contact is broken
maximum average T of supply and return
sensor for central heating is repeatedly
exceeded. Operation is normally possible
for the hot water supply during the block.
The pump continues to operate at minimum
capacity during the block.
check ow
through the
installation
see the installation instructions for the hydraulic
connections to the boiler
(3-Way-Thermostatic valve, Plumbing Kit
installed?)
possible causes: (radiator) shut-off valves
closed or blocked water lter
activeted room sensor (RS101) in non leading
room (closed thermostatic radiator valves?)
check pump height.
check minimum and maximum Temperature
difference in Parameter Step 46 + 47.
maximum average T of supply and return
sensor for hot water is repeatedly exceeded.
Operation is normally possible for the central
heating installation during the block. The pump
continues to operate at minimum capacity
during the block.
check ow through
the boiler and DHW
fascility
see the installation instructions for the hydraulic
connections to the boiler
possible causes: (radiator) shut-off valves closed
or blocked water lter
15.1.4 Block 60
Execute
Parameter-Reset.
resistance (coil) in DHW fascility to high
(see pump height)
check 3-way-valve on function and pollution.
incorrect parameter setting for the minimum
or maximum power
an incorrect setting has been detected. The
factory settings are activated after the "green
key function" is executed:
Make sure that the text can be seen
on the display. Continue to press the Store
key until appears on the display. The
factory settings are now copied and the boiler
will come into operation normally.
a temperature difference has been detected
between the supply and return sensor whilst
the burner is not in operation. After the
average T has disappeared, the block will
disappear.
check the sensors
NTC 1 and NTC 2
check the supply and return sensor for the
resistance value and replace the defective
sensor
check the installation for any external heat
source and rectify this
de-aeration cycle is terminated and the burner
is released.
check the boiler
pump
15.1.7 Block 86
check the installation for the presence of air;
If there is a secondary pomp installed and
it is not hydraulicly seperated could cause
pressure differences.
check that the pump is functioning and/or
that the water pressure sensor is working
properly;
Polluted pump;
Wiring of pump or water pressure sensor;
The frequence of the power supply deviates
more than 2,5Hz (<57,5Hz, >62,5Hz)
A detected error is indicated on the display by an Error message. Error messages
are permanent locks which can only be removed by pressing the reset key. The
controller will make every possible attempt to prevent the lock. Below is a summary
of the Errors.
Error
15.2.1 Error 00
ionisation ow (ame)
has still been detected
with one gure on the last 2 characters.
incorrect ame formation.
boiler has not been
burning but an
check whether the ionisation cable and/or the
electrode are responsible for a possible shortcircuit. Remove the plugs from the ionisation
cable connected to the control unit and to
the electrode. Now using a universal meter
take a measurement between the ionisation
as a result of a 24 Volt short-circuit inside or
outside the boiler the fuse F2 will have blown.
This fuse is placed in the control unit and
can be seen after the black covering cap is
removed.
check the 24 Volt
connection
check the
disconnected
components for
short-circuiting
rectify the short-
circuit or replace
the short-circuited
component
remove all plugs with 24 Volt connections
such as: fan, pump, any three-port valve and
24 Volt plug to the connecting block.
switch on power again to the control unit with
the components disconnected. Reconnect the
components, which have been checked and
are working.
the minimum gas
preliminary pressure
during the start must
be a minimum of 7"W.
C. (17 mbar), check
the 24 Volts in the gas
during ignition block’s
open position
70
ionisation ow,
ionisation cable or the
O2 setting
the minimum
ionisation ow should
be 4 µA, the O2 should
be 4.7 %
15.2.4 Error 03
control unit error
software error con-
trol unit
replace the control unit. The controller will
automatically load the program into the new
control unit.
15.2.5 Error 04
the controller has detected a program error
reset the boiler
the boiler automatically indicates this message if during an error read-out the voltage
to the boiler is removed. After the voltage has
once again returned, if the error causing the
interference is no longer present, this message is given.
incorrect data will be detected in case of a poor
connection between the control unit and the
display. If necessary, replace the ribbon cable
between these two components.
the error persists
after reset
software error
control unit.
replace the control unit. The controller will
automatically load the program into the new
control unit.
incorrect data will be detected in case of a
poor connection between the control unit and
the display or if the interface is incorrectly
positioned. If necessary, replace the ribbon
cable between these two components.
the error persists
after reset
software error
control unit
replace the control unit. The controller will
automatically load the program into the new
control unit.
due to the 24 volt short-circuit inside or
outside the boiler, fuse F2 has blown. This
fuse is positioned in the control unit and can
be seen when the black covering lid has been
removed.
check the 24 Volt
connections
check the
disconnected
parts for wear
and tear
rectify the short-
circuit or replace
the short-circuited
component
remove all plugs with 24 volt connections such
as: fan, pump, any three-port valve and 24 volt
plug to the connecting block
reconnect power to the control unit with the
disconnected parts. Reconnect the parts
which have been checked and are working
properly.
outdoor temperature is higher than 70°F,
depending upon the Eco-temperature set
(70°F is the default). Check Info chapter
Step 7 or temperature is higher than the
Eco temperature set (see RS100 installation
instructions).