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
(exposure of hazardous materials)* or loss of life. Refer to the
user's information manual provided with this boiler. Installation
and service must be performed by a licensed professional, service
agency or the gas supplier (who must read and follow the supplied
instructions before installing, servicing, or removing this boiler).
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 they are
Pictured: Q85SN, Q130SN
Q85SP, Q130SP
familiar with all necessary operating instructions.
NOTICE!
Installation and service must be performed by a licensed
professional, service technician or the gas supplier.
WARNING!
If you do not follow these instructions exactly, a fi re or explosion
may result causing property damage, personal injury or loss of life.
- Do not store or use gasoline or other fl 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 fi re department.
Address: 103 International Drive, Peachtree City, GA, 30269
These installation instructions contain important information for the safe installation, start-up and maintenance of
boilers with capacities 85,000 through 205,000 BTU/hr.
These installation instructions are intended for licensed professionals, 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.
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, if applicable,
generating domestic hot water. The boiler is delivered with a burner controller
(MCBA) pre-installed.The boiler can be fi 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 defi nitions
The following defi ned terms are used throughout the documentation to bring attention
to the presence of hazards of various risk levels. Notices give important information
concerning the operation of the product.
DANGER:
Indicates the presence of hazards that will cause severe personal injury, death or
substantial property damage.
WARNING:
Indicates the presence of hazards that can cause severe personal injury, death or
substantial property damage.
CAUTION:
Indicates presence of hazards that will or can cause minor personal injury or property
damage.
CAUTION
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 defi nitions
The following (safety) symbols may be encountered in these installation instructions
and on the unit:
This symbol indicates that the unit must be stored away from freezing conditions.
This symbol indicates that the packaging and/or contents can be damaged as
a result of insuffi cient care taken during transport.
This symbol indicates that, while 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 fi 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 classifi cation.
Only use the boiler with the accessories and spare parts listed.
-
- Other combinations, accessories and consumables may only be used if they are
specifi cally designed for the intended application and do not affect the system
performance and the safety requirements.
- Maintenance and repairs must be performed by a licensed professional.
- 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 specifi cally designed and approved for this type of boiler.
- Please note that local permission for the vent system and the condensate water
connection to the public sewer system may be required.
You must also respect:
- The local building codes stipulating the installation rules.
- The local building codes concerning the air intake and outlet systems and the
chimney connection.
- The regulations for the power supply connection.
- The technical rules established 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 fl 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 fi nd any defects, you must inform the owner of the system of the defect and
the associated hazard in writing.
In failure to properly commission the boiler as described in section 13 may result
unreliable burner operation, reduced component life, and unsafe boiler operation.
DANGER. Gas is fl 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 fi re or explosion may
result causing property damage, personal injury or death.
- Do not store or use gasoline or other fl 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 fi re department.
Should overheating occur or the gas supply fail to shut off, do not turn off or
disconnect the electrical supply to the pump. Instead, shut off the gas supply
at a location external to the boiler.
Chemicals that are corrosive in nature should not be stored or used near the
boiler or vent termination.
i
NOTICE
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 effi ciency. It can also cause corrosion and reduce life of the heat exchanger.
– You must follow Rinnai guidelines for boiler water quality.
– Thoroughly fl ush the system prior to fi lling.
– Follow the Rinnai cleaning instructions.
– Never use water that has been treated by a reverse osmosis, D.I., or distilled water
to soften the water to fi ll the heating system.
– Do not use inhibitors or other additives unless approved by Rinnai for that purpose.
– When freeze protection of the heating system is desired, only use Rinnai-approved
antifreezes. The allowed maximum concentration is 50%.
– When using oxygen-permeable pipes, e. g. for under fl oor heating systems, you
must separate the system from the boiler using plate heat exchangers.
– Valve off boiler while fl ushing system, do not introduce any system cleaner into the
boiler loop. Flush system thoroughly to remove all system cleaner before fi lling boiler.
The system cleaners from NoBurst, Rhomar, and Fernox are not to be used in
the boiler. The boiler must be closed off (valved off) from the rest of the system
or not connected while the cleaners are in the system. The system should then
be drained and then thoroughly fl ushed with clean water to remove all the
system cleaner.
See the Rinnai Boiler Applications Manual or Chapter 6 and 10 of this manual for
additional information.
If problems occur when using sanitary water with a chlorine content
higher than 150 mg/l, no recourse can be made to the terms of the limited
warranty.
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 fi tting
– Digital manometer that is capable of reading both positive and negative pressures
– 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 of the boiler you will need, apart from standard tools for space
heating, gas and water fi ttings the following items:
1.7 Relevant Installation, Service and User manuals
– Approved vent system
– Rinnai Boiler Applications Manual
– User 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.
2 Regulations and guidelines
The installation must comply to the requirements of the authority having jurisdiction
or, in the absence of such requirements, to the latest edition of the National Fuel Gas
Code, ANSI Z223.1/NFPA 54. In Canada, installation must be in accordance with
the requirements of CAN/CSA B149.1, Natural Gas and Propane Installation Code.
Where required by the authority having jurisdiction, the installation must comply to
the Standard for Controls and Safety Devices for Automatically Fired Boilers, ANSI/
ASME CSD-1.
Install CO detectors per local regulations. Boiler requires an inspection every 2 years or
4000 hours and maintenance every 4 years or 8000 hours. See maintenance section
chapter 14.
Operating Limits of the boiler:
Max. boiler temperature: 176 °F (80 °C)
Max. operating pressure: 45 psi (3 bar)
Max. Allowable Working Temperature ASME: 200 °F (93 °C)
Max. Allowable Working Pressure ASME: 45 psi (3 bar)
The hot water distribution system must comply with all applicable codes and
regulations. When replacing an existing boiler, it is important to check the condition
of the entire hot water distribution system to ensure safe operation.
The boiler retreives its
combustion air from outside
then discharges the fl ue
gasses to the outside.
Condensing
Retrieves heat as much as
possible from the fl ue gasses.
Water condensates on the
heat exchanger.
Modulating
Stepless higher or lower
burning according to the heat
demand.
Different boilertypes:
The Rinnai Q boiler is a room sealed, condensing and modulating central heating
boiler, with an optional integrated DHW cylinder (integrated DHW on the Q175C only).
The QxxS boiler models have the ability to control a domestic hot water indirect tank.
The boiler is provided with a compact stainless steel heat exchanger with smooth
tubes. This design is a well engineered 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 effi ciency. The condensate, which has
no effect on the heat exchanger and the function of the boiler, is drained through a
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 type indication: Rinnai Q205SN
Q = Type
205 = Nominal load in (x1,000) BTU
S = System/Solo (C = Combi)
N = Natural Gas (P = Propane Gas)
• Check if all the items listed are included in the delivery.
The supply kit contents:
Description
Boiler with:
Outdoor reset sensor ARV12111
Compression ring Ø15 brass4
Compression ring Ø22 brass2
Compression ring Ø28 brass2
Compression ring Ø35 brass22
Bolt M5X16mm111
Cover air supply Ø120/Ø80111
Gasket vent system ø80111
Power cable pull safety Q-Series111
Flue pipe Ø 80 PP111
Nut 15mm compression fitting2
Nut W1.1/8x1/14 22 Compression fitting1
Nut W1.3/8"x1/14 28 compression fitting2
Nut W1.610x1/14 35 compression fitting22
Screw 6X60mm555
Lip-ring flue pipe ø80111
Feed through + plug flue gas111
Cap de-aerator111
Adapter fitting 15mm x 3/4"NPT ext.2
Adapter fitting 22mm x 3/4"NPT ext.1
Flue adapter Ø80/Ø3" pps UL appr.222
Flow restriction MR01 FG 21,0L red1
Wall mounting suspension bracket111
Plumbing kit Q85S/Q130S11
Plumbing kit Q175S/Q175C/Q205S1
3/4" Gas valve111
Template on inside of package111
Installation & Service Instructions111
User information manual111
Warranty document111
ICSL book111
Q85S
Q130S
Amoun
Q175S
Q205S
Q175C
4.2 Transportation
The boiler may be damaged when not secured properly.
- Only transport the boiler using appropriate transportation equipment, such as a
handtruck with a fastening belt or special equipment for maneuvering steps.
- When shipping the boiler must be secured on the transportation equipment to
prevent it from falling off.
- Protect all parts against impacts if they are to be transported.
- Follow the transportation markings on the packaging.
• Packaged boilers must always be lifted and carried by two people, or you must
use a handtruck or special equipment for transport.
- The room where the boiler will be placed must always be free from freezing
conditions.
- Do not store or use gasoline or other fl ammable vapors and liquids in the
vicinity of this or any other appliance.
- Never use or store any chlorinated detergents or halogenated hydrocarbons
(e.g. in spraycans, solvents and detergents, paints, adhesives) in proximity
of the boiler.
- The boiler must be installed in such a way that it is protected from water
(dripping, spraying, rain, etc.) during operation and service (circulator
replacement, condensate trap, control replacement, etc.)
- This boiler is for intended for indoor installations only.
Products to avoid present in boiler room
and/or around combustion air intake
Spray cans containing chloro-/fluorcarbons
Ammonium and/or ammonium solutions
Permanent wave solutions (hair product)
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
- Do not tear the packaging. Take notice of the presence of the mounting
template at the inside of the carton wrapper.
- Lay the boiler on its back during unpacking. When unpacking, the casing can
be removed from the boiler. This part can be kept apart during installation. It
must be placed on the boiler and fi xed with the screw behind the door before
the boiler is started up.
Turn the boiler to its side and remove the wall bracket from the back of the
boiler by removing the 2 screws.
The boiler can be mounted practically to any wall with the suspension bracket and the
enclosed mounting equipment.
- The wall must be fl at and of suffi cient strength in order to be able to securely hold
and support the boiler weight with its water content.
- Take note of the necessary space around the boiler for installation of venting
system, pipework and servicing. See drawing in section 5.3.
The location of the boiler can be determined by using the template which is printed
on the inside the boiler package wrapping. Remember to account for the spacing of
the plumbing kit.
- Drill the necessary holes using the template
- Install the mounting bracket to the wall using the supplied mounting materials
Lifting and carrying precautions.
To avoid personal injury please follow these recommendations:
- Always lift the boiler with 2 people or use special equipment.
- When lifting the boiler, bend the knees, and keep the back straight and feet
apart.
- Do not lift and twist at the same time.
- Lift and carry the boiler close to the body.
- Wear protective clothing and gloves to protect from any sharp edges.
Lift the boiler only by the boiler's rear wall. Do not lift using the pipes on the
bottom of the boiler or the vent connections on the top of the boiler.
inch / mminch / mminch / mm
A Height26.8" / 68026.8" / 68026.8" / 680
B Width19.7" / 50026" / 66039.4" / 1000
C Depth15.2" / 38515.2" / 38515.2" / 385
D Left side / vent13.2" / 33519.5" / 49519.5" / 496
E Center to center / vent and air supply4.7" / 1204.7" / 1214.7" / 122
F Back / vent10.6" / 27010.6" / 27010.6" / 270
G Left side / gas pipe2.6" / 65 2.6" / 65 2.6" / 65
H Left side / supply pipe7.8" / 1997.8" / 1997.8" / 199
J Left side / return pipe16.8" / 42819.8" / 50419.8" / 504
K Left side / condensate pipe14.6" / 37020.9" / 53020.9" / 530
L Left side / expansion pipe23.2" / 590
N Left side / cold water pipe34.8" / 885
O Left side / hot water pipe37.6" / 955
P Pipe length of g*0.7" / 180.7" / 180.7" / 18
Q Pipe length of c*2" / 502" / 502" / 50
R Pipe length of f and r*17.7" / 45018.5" / 47018.5" / 470
S Pipe length of e, k and w*3.5" /89
T Back / Center of pipe c*1" / 251" / 251" / 25
U Back / Center of pipe g* 1.6" / 401.6" / 401.6" / 40
Back / Center of pipe f, r, e, k and w*2" / 502" / 502" / 50
V1
Back / Center of pipe f and r*2.1" / 542.1" / 542.1" / 54
V2
Pipe length vent co-axial
W
Pipe length vent parallel
X Bottom side boiler to center safety valve7.7" / 1958" / 2008" / 200
Y
Bottom side boiler to center header10.2" / 26010.4" / 26510.4" / 265
Z
Center to center of f and r*9" / 22912" / 30512" / 305
inch / mminch / mminch / mm
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 / Ground to
bottom of boiler
12" / 30012" / 30030" / 762
Floor/ Ground to
bottom Low loss
header
0"0"12" / 300
Vent 0"0"0"
ceiling
Min. 10" /
250mm
15.7"
400
wall
24"
600
2"
50
2"
50
service clearances to the boiler figure 6
clearances to the boiler table 3
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 fl oor/ground
The recommended service clearance to the bottom of the low loss header is 12 inches.
Efficiency at 98.6/86°F (36/30°C) part
load, Hs, EN677 CH
AFUE according IBR %95.095.495.495.095.0
(at full load)
O
2
Electr. power consumption max.W210137144210234
Electr. power consumption stand byW
CurrentV/Hz
Fuse ratingA
Degree of protection acc. EN 60529
Weight (empty)lbs / kg196 / 89110 / 50117 / 53141 / 64141 / 64
Water content CHgallon / liter1.8 / 70.9 / 3.51.3 / 51.8 / 71.8 / 7
Water content DHWgallon / liter3.7 / 14
Water content Plumbing Kitgallon / liter0.74 / 2.8
After run time pump CHmin
After run time pump DHWmin
Water pressure min.-max.
P
MS
P
Water pressure DHW max.
MW
Flow temperature max.°F / °C
Pump typeUPER 20-78 UPER 20-58 UPER 20-78 UPER 20-78 UPER 20-78
- The central heating circuit pipes.
These must be connected to the Plumbing Kit by means of adapter fi ttings.
See further chapter 6.1;
- The gas supply pipe.
It is provided with a 3/4" male thread into which the tail piece of the gas valve can
be screwed. See further chapter 6.4;
- The condensation drain pipe.
It consists of an oval 1" (24 mm) plastic pipe. The drain pipe can be connected to
this by means of an open connection. If the open connection is fi 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 fl ue and intake air or with the use
of the included adapters 3” PVC / CPVC fl ue and intake. See further chapter 6.7.
- Cold and hot water pipes for domestic hot water (DHW).Combi boilers only: These consist of 3/4" (15 mm) copper pipe and can be
connected to the installation by means of 3/4" M-NPT adapter fi ttings. See further
chapter 6.5;
The pipes to be connected to the boiler must be cleaned before connecting in
order to prevent dirt from entering and damaging the boiler.
6.1 Central heating system
Connect the central heating system according to its instructions.
The boiler pipes can be connected to the installation by means of compression fi ttings.
Reducers should be used for connecting to thick-walled pipe (welded or threaded).
When removing the plastic sealing caps from the pipes, dirty testing water may
drain from the boiler.
A Plumbing Kit must be fi 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 fl ow control valves or other automatic means to prevent
gravity circulation of the boiler water during the cooling cycle.
Rinnai supplies specifi c Plumbing Kits with each boiler type, which must be fi tted
directly underneath the boiler on the supply and return pipe. Find in chapter 5.3 the
dimensions. Use of the Rinnai boiler without the plumbing kit will void the warranty.
T o protect the entire heating system we recommend installing a dirt particle trap
in the return circuit. When the boiler is installed to an existing heating system
this trap is required. Use of a Y strainer is not permitted as a substitute for a
dirt trap.
- Install shut-off valves immediately before and after the dirt particle fi lter to allow
the trap to be cleaned.
- Position 3 (fi gure 8) is a garden hose thread boiler drain that can be used to drain
the boiler or add water treatment additives to the system such as inhibitors or
glycol.
- Position 4 (fi gure 8) is the supply connection for an indirect tank when used with
the optional 3-way valve kit.
- For information on locating the expansion tank and system fi ll, please see the
Rinnai Boiler Applications Manual.
Thoroughly fl ush all pipes and radiators. We recommend the use of a Rinnai
approved system cleaner. Please refer to the list of approved Rinnai system
cleaners in this chapter.
- Refer to the installation template and chapter 5.3 for the pipe connection dimensions.
Compression fittings.
Parts:
1. Nut
2. Ferrule
3. Fitting
Fitting instructions:
1. Push the complete
21
2. Turn the nut handtight
The plumbing kit is not intended to support the weight of the piping. Appropriate
piping supports should be used to support all attached piping to the boiler and
plumbing kit.
5
1. Plumbing kit
9
6
7
8
2. Safety valve
3. Drain and Purge connection
4. DHW fl ow connection
in case of optional
internal 3 way valve
5. Bronze adapter fi ttings
6. Service valves*
7. Flow
8. Return
9. Pressure gauge*
fitting over the pipe as
far as possible. Ferrule
should be over the
pipe completely.
clockwise.
1
2
4
3
3
3. Use 2 wrenches, one
to hold the fitting on
its place, the other
for tighten the nut
clockwise in 3/4 turn.
* After installation of the plumbing kit to
the boiler the pressure gauge and both
handles of the service valves must be
mounted. Be sure the gauge is fi tted leak
free and that the handles are secured with
the supplied nuts.
Page 21
- Boiler system fl ushing (Not Boiler heat exchanger)
When replacing an existing boiler the heating system should be fl ushed with
the old boiler in place before the new boiler is added to the system. If the old
boiler has already been removed a bypass must be piped in when the new boiler
is installed in order to facilitate the fl ushing of the system.
The boiler must be valved off from the system, while the system is fl ushed. No
system cleaner should ever enter the boiler heat exchanger due to its caustic
nature which could damage the heat exchanger.
1. Close the shutoff valves on both the supply and return connections on the plumbing
kit (V1 and V2).
2. Open the bypass valve (V4).
3. Connect pump outlet hose (H1) to the supply side purge station (BD1)
4. Connect drain hose (H3) to the return side purge station (BD2).
5. Pour the system cleaner into a pail and follow the system cleaner instructions on
circulation time and volume to be added to the system.
6. Operate the charging pump (CP) and charge the system with the required volume
of system cleaner
7. Close the supply side purge station (BD1)
8. Turn on the system pump(s) (SP) and circulate the cleaner through the system
for required time as established by the cleaner manufacturer.
9. Once the time required by the system cleaner manufacturer has been met place
the drain hose (H3) in a drain.
10. Turn off the system pump(s) (SP)
11. Close the main valve on the system return (V3) and open the return side purge
station (BD2).
12. Open the auto feed on the system (F1) and allow water to rinse the system for
whichever is greater; 10 minutes or the required rinse time by the system cleaner
manufacturer.
• Noble Noburst Hydronic System Cleaner • Fernox F3 Cleaner
- Rhomar Hydro-Solv 9100 • Sentinel X400
The system cleaners from NoBurst, Rhomar, and Fernox are NOT to be used in
the boiler. The boiler must be closed off (valved off) from the rest of the system
or not connected while the cleaners are in the system. The system should then
be drained and then thoroughly fl ushed with clean water to remove all the
system cleaner.
Approved inhibitors:
- Rhomar Pro-tek 922 • Sentinel X100
- Noble Noburst AL inhibitor
- Connect the expansion tank to the system. See chapter 6.2.
- Connect the pipes so that they are free from strain.
Connecting boiler with DHW tank
- Connect the external DHW tank according to the installation instructions of the
DHW tank and fi ttings concerned. See chapter 7 and the Rinnai Boiler Applications
Manual for additional information.
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.
If the installation resistance is over the stated value; the pump will rotate at maximum
capacity and 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 fl ow over the boiler. If not the boiler will switch off.
The electrical side of the external circulation pump (fi g. 6, pos. 2) 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 to the installation resistance
and required fl ow.
As standard the boiler is provided with a water fi lter in the return pipe of the boiler (fi g.
10), so that debris from the central heating water is prevented from affecting the boiler.
The boiler is designed to be used on pressurized heating systems only (closed
loop).
A side mounting kit for the low loss header is available as an accessory. This kit
relocates the low loss header from directly below the boiler to the left side of the boiler
only. The kit includes all the parts required to relocate the low loss header including
all mounting brackets and material. This kit provides an alternative to for installations
with height limitations and allows for an alternative piping installation.
Kit 2 for boiler models Q85S and Q130S Rinnai part number: 804000072
Kit 3 for boiler models Q175S, Q175C, and Q205S Rinnai part number: 804000073.
Side mounting kit fi gure 11
6.1.3 Safety valve
An ASME 30 psi pressure relief valve is installed on the plumbing kit included
with the boiler.
6.1.4 Low water cut off
The Rinnai Q boiler has a factory installed pressure switch type Low Water Cut
Off (LWCO). Check your local codes to see if a Low Water Cut Off is required
(LWCO) and if this device conforms to local code. See the Rinnai Boiler
Applications Manual for further information.
An expansion tank must be part of the central heating system. The expansion tank
must be appropriate to the water content of the installation. The pre-charge pressure
depends on the installation height above the mounted expansion tank. The expansion
tank is NOT a part of the delivery and should be sourced locally. Please refer to the
expansion tank manufacturer for further information. The Combi boiler Q175C is
equipped with an expansion tank connection. This pipe is connected with the three
way valve and boiler pump.
Fill expansion tank to a minimum of 14.5 psi.
For the boiler to function correctly, it is necessary to connect the expansion
tank to the expansion tank connection on the boiler. If the expansion tank is not
connected to the supplied connection damage to the boiler may occur.
Note:
The solo boilers Q85S, Q130S, Q175S and Q205S can be provided with an optional
internal three way valve. When this valve is installed in the boiler, the boiler is provided
with an expansion tank connection. This pipe is connected with the three way valve
and boiler pump.
For the boiler to function correctly, it is necessary to connect the expansion
tank to the expansion tank connection on the boiler. If the expansion tank is not
connected to the supplied connection damage to the boiler may occur.
See the Rinnai Boiler Applications Manual for further information regarding placement
of the expansion tank in the system. See the Rinnai 3-way valve indirect tank
installation manual for further information regarding the installation of the 3-way valve
indirect tank kit.
The boiler cannot be used with an open type expansion tank.
6.3 Underfl oor heating system (plastic pipes)
When using oxygen-permeable pipes, e. g. for fl oor heating systems, you must
separate the system using plate heat exchangers.
No recourse can be made to the terms of the limited warranty in the event of
failure to observe the regulations pertaining to plastic underfl oor heating pipes.
Only work on gas lines if you are licensed for such work.
If these instructions are not followed exactly, a fi 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 identifi cation plate on the boiler.
First check the identifi cation plate on the boiler for the suitable gas type.
Do not use the boiler for another type of gas than indicated on the identifi cation
plate of the boiler. This will cause improper functioning and can damage the
boiler.
Natural gas: refer to chapter 6.4.1
Propane gas: refer to chapter 6.4.2
6.4.1. Gas connection with natural gas
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.
Sediment trap fi gure 12a
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 equipped with external 3/4" M-NPT thread, onto which the tail
piece of the gas shut off valve can be connected. Use appropriate 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 working gas pressure measured at the boiler should be 7" W.C. (18 mbar)
for Natural gas (Gas A). Maximum pressure with no fl ow (lockup) or with the boiler
running is 10.5" W.C. Minimum pressure with the gas fl owing (verify during boiler
startup) is 4.0" W.C.
The gas pipe must be fi 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 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" W.C. with no fl ow (lockup) or with boiler running.
- Minimum 8" W.C. with gas fl 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 gas.
- A sediment trap must be provided upstream of the gas controls.
Gas shut off valve onto boiler
fi gure 12b
The boiler pipe is provided with external 3/4" M-NPT thread, onto which the tail piece
of the gas shut off valve can be screwed. Use appropriate sealing.
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 fi 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).
6.5 Hot water supply (Combi boiler Q175CN/Q175CP)
Connection of the drinking water installation should be performed according to the
national secondary drinking water regulations.
Do NOT use toxic chemicals, such as those used for boiler treatment in potable
water heating systems used for space heating.
The sanitary water pipes can be connected to the installation by use of adapter
fi ttings. The cold water inlet on the Combi boilers must be equipped with the following
components (counted in the water fl ow direction):Flow regulator valve (supplied),
Safety group, Expansion vessel 87 PSI / 6bar (potable water, blue).
A fl ow regulator valve is supplied with the boiler. The fl 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. The 3/4" NPT adapter fi tting with the fl ow reducing valve must be fi tted in the cold water connection (see Dimensions 5.3, cold water pipe -k).
When there is a water pressure lower than 22PSI / 1.5 bar it is advisable to
remove the inside mechanism of the fl ow reducing valve. Contact Rinnai for
removal instructions.
DANGER
6.5.1 Domestic Water quality
Appropriate steps must be taken to ensure the indirect tank water heater does not
become plugged by scale caused by hard water or sediment. If the indirect tank water
heater becomes plugged by either scaling from hard water or sediment it is not the
responsibility of Rinnai.
1. Water hardness for DHW
When there is a water hardness of more than 6 to 7 grains hardness for domestic
water, a water softener must be installed on the inlet side of the DHW connection.
Hot water can be dangerous, especially for infants or children, the elderly,
or infirm. There is hot water scald potential if the thermostat is set too high.
Water temperatures over 125º F (51º C) can cause severe burns or
scalding resulting in death.
Hot water can cause first degree burns with exposure for as little as:
3 seconds at 140º F (60º C)
20 seconds at 130º F (54º C)
8 minutes at 120º F (48º C)
Test the temperature of the water before placing a child in the bath or
shower.
Do not leave a child or an infirm person in the bath unsupervised.
2. Sediment in DHW
If there is sediment in your domestic water supply a sediment fi lter or other suitable
device should be used to remove it before the water enters the indirect tank water
heater.
3. Water Chemistry for DHW
The water used for domestic must have a water pH between 6.0 and 8.0, contain less
than 1.7 gpg (20 mg/l) of Sodium, and a concentration of Chlorine less than 5.8 gpg
(100 mg/L).
If problems occur when using sanitary water outside of the above stated
requirements, no recourse can be made to the terms of the limited warranty.
6.5.2 Domestic water treatment Accessory
Rinnai offers a domestic water treatment device that can help reduce scale build up.
This device can be installed on the incoming cold water line for any combi boiler. For
additional information on contact Rinnai.
A domestic water expansion tank could be required by local code. Check local code
to determine if it is required.
If a combi boiler is installed in a closed water supply system, such as one having a
backfl ow preventer in the cold water supply line, means shall be provided to control
thermal expansion. Contact the water supplier or local plumbing inspector on how to
control thermal expansion.
6.5.4 Installing a valve kit
A means to isolate the domestic indirect tank water heater for cleaning must be
provided at installation. Refer to fi gure 13 for proper piping layout. A Rinnai valve kit
can be used on domestic water connections for all combi boilers to allow for cleaning of
indirect tank water heater and installation the domestic hot water pressure relief valve.
•
Rinnai recommends the use of the WRIK-LF-F(3/4” NPT thread connection) or WRIK-C kit
(WRIK-C (3/4” sweat connection) when connecting the domestic water lines to the boiler.
• Use of this kit will assist in fl ushing the indirect tank water heater in areas where
water quality issues exist, as well as improve overall product serviceability.
Plumbing valve Kit
P
Low Loss Header
T
Sediment Filter
V1
Service valve
Boiler DHW piping fi gure 14
V2
Service valve
Cold water
6.5.5 Pressure relief Valve for Combi boilers
- An approved pressure relief valve is required by Rinnai for all water heating systems.
- The relief valve must comply with the standard for Relief Valves and Automatic Gas
Shutoff Devices for Hot Water Supply Systems ANSI Z21.22 and/or the standard
Temperature, Pressure, Temperature and Pressure Relief Valves and Vacuum
Relief Valves, CAN1-4.4.
- The relief valve must be rated up to 150 psi and to at least the maximum BTU/hr
of the appliance.
- The discharge from the pressure relief valve should be piped to the ground or into
NOTICE
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NOTICE
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a drain system to prevent exposure or possible burn hazards to humans or other
plant or animal life. Follow local codes. Water discharged from the relief valve
could cause severe burns instantly, scalds, or death.
- The pressure relief valve must be manually operated once a year to check for
correct operation.
- The relief valve should be added to the hot water outlet line according to the
manufacturer instructions. DO NOT place any other type valve or shut off device
between the relief valve and the combi boiler.
- Do not plug the relief valve and do not install any reducing fi ttings or other
restrictions in the relief line. The relief line should allow for complete drainage of
the valve and the line.
- If a relief valve discharges periodically, this may be due to thermal expansion in a
closed water supply system. Contact the water supplier or local plumbing inspector
on how to correct this situation. Do not plug the relief valve.
- Rinnai does not require a combination temperature and pressure relief valve for
this appliance. However local codes may require a combination temperature and
pressure relief valve.
- If a combi boiler is installed in a closed water supply system, such as one having
a backfl ow preventer in the cold water supply line, means shall be provided to
control thermal expansion. Contact the water supplier or local plumbing inspector
on how to control thermal expansion.
6.6 Condensate drain pipe
This boiler produces condensate. Condensate must be drained otherwise the boiler
will not function and can cause product or property damage.
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 applicable local code.
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 local code. It is recommended, but not
required to install a condensate neutralizer. Rinnai offers a condensate neutralizer
designed to work with all boiler models. The condensate neutralizer kit comes with
all the necessary fi ttings and mounting material. PVC pipe must be supplied by the
installation contractor. Rinnai part number: 804000074
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 fi 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 with a supply temperature of 160°F or above, fi 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 certifi ed PVC or CPVC pipe, fi ttings and cement.
Periodic cleaning of the condensate disposal system must be carried out.
See the Rinnai Boiler Applications Manual for further information and a piping
diagram for the condensate.
30
Page 31
6.7 Vent system and air supply system
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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 fl ue gases of other appliances to enter the boiler.
- Keep cabinet free of moisture
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 licensed professional.
6.7.1 Intake / Exhaust Guidelines
Refer to the specifi c instructions on your vent product for additional installation
requirements.
• For direct vent boilers, proper reassembly and resealing of the vent-air intake
system is required.
• You must use vent components that are certifi ed 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 fi 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 20.
• Do not connect the venting system with an existing vent or chimney.
• Do not common vent with the vent pipe of any other combi boiler or appliance.
• Vent connections must be fi 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.
If it becomes necessary to access an enclosed vent system for service or
repairs, Rinnai is not responsible for any costs or diffi culties in accessing
the vent system. The limited warranty does not cover obtaining access to an
enclosed vent system.
The instructions for the installations of the venting system shall specifi y that the
horizontal portions of the venting system shall be supported to prevent sagging; the
methods of and intervals for support shall be specifi ed. These instructions shall also
specify that the venting system:
• For category I, II and IV boilers, have horizontal runs sloping upwards not less
than 1/4" per foot (21mm/m) from the boiler to the vent terminal;
• For category III boilers, slope shall be as specifi ed in the boiler manufacturer's
instructions;
• For category II and IV boilers, be installed so as to prevent accumulation of
condensate; and
• For category II and IV boilers, where necessary, have means provided for drainage
of condensate.
Consult local and state codes pertaining to special building code and fi 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 6.7.7.
The maximum permissible lengths are listed in table 9, chapter 6.7.7.
Decide how to install the exhaust and air intake system. You can choose among:
- Concentric system
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 fi tted, with or without elbow pieces. The maximum
permissible pipe length is displayed in table 9, chapter 6.7.7.
- Parallel system
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 separate supplied
kit, with 2 vent adapters 3" (ø80mm), cover 5" (ø125mm), vent exhaust pipe and
gaskets should be fi tted instead of the concentric vent adapter on top of the boiler.
See chapter 6.7.3.1 for installation. The maximum permissible pipe length is set out
in table 9, chapter 6.7.7.
- Room Air System (indoor combustion air)
The boiler can use room air for combustion. If this option is selected the boiler must
fi rst be converted to the parallel system. A single exhaust pipe can then be fi tted.
It is required to use a room air fi lter (Part nr. 808000025) when using indoor air for
combustion. See chapter 6.7.3.2 for installation. The maximum permissible pipe length
is set out in table 9, chapter 6.7.7.
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NOTICE
NOTICE
NOTICE
Rinnai strongly recommends the use of the room air fi lter when a Room Air
System (indoor combustion air) is used.
When the boiler is installed in any of the areas listed in chapter 5.1, "Areas
likely to have contaminants" or any area exposed to the contaminants listed in
chapter 5.1, then sealed combustion is required.
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 fi gure 19
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 soffi 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 soffi t** *
F Clearance to outside corner***
G Clearance to inside corner***
H Clearance to each side of center
line extended above meter/regulator
assembly
I Clearance to service regulator vent outlet36 inches (91 cm)**
J Clearance to nonmechanical air supply
inlet to building or the combustion air inlet
to any other appliance
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)
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 within 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 fl oor.
* For clearances not specifi ed in ANSI Z223.1/NFPA 54 or CSA B149.1, clearances are in accordance with local installation codes and the
requirements of the gas supplier.
See Boiler Applications manual for additional venting information.
NOTICE
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CAUTION
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CAUTION
NOTICE
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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 (1,219 mm) of horizontal run, beginning with
support near the boiler to prevent movement in fi ttings and allow boiler to be
free from any strain or weight on boiler or fi ttings.
The terminal should be located where dispersal of combustion products is not
impeded and with due regard for the damage or discoloration that might occur
to building products or vegetation in the vicinity (see fi g 19 and 20).
In certain weather conditions condensation may also accumulate on the 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, CPVC and Radel is not permitted for use with the
boiler.
The application of any type of insulation is prohibited for use with any Plastic
venting system.
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 fi re,
personal injury, or death.
Rinnai strongly suggests the use of concentric venting for all closet and alcove
installations. For non direct vent room air applications see sections 6.7.6 and
6.7.6 Dimensioning of the exhaust and air intake duct
!
WARNING
NOTICE
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DANGER
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WARNING
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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 fi 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
fi 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 fi 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”/foot (21 mm/m) 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 specifi c venting systems. The venting system
manufacturer's required venting pitch must always be followed if larger than
1/4” (21 mm). Ubbink concentric condensing venting requires a pitch of ¾”/
foot (6mm/m).
Combustion air piping from the outside 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.
See the Rinnai Boiler Applications Manual for further information on venting.
In the table below you will fi 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
Choose the vent type and fi 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, 2 feet for the concentric terminal in the Concentric System and 12 ft for the
combustion room air fi lter.
x 6*
Number of
elbows 45°
x 3*
Concentric
terminal
Add 5 ft.
TotalMultiply with
factor
Total equivalent len
th
Equivalent
length
ft
Concentric system
Length concentric
tube, boiler to roof
horizontal
Number of
elbows 90°
x 6*
ftftftftft1.0ft
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 +
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.
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 11.1 how to change
parameters.
Example of calculation:
Q175
Eq. lenth vent system (taken from previous example) 46 ft CF(V) = 10
Altitude 7,200ft CF(A) = 42 +
CF(T) = 52
Parameter setting (Par. 73) = 52
Do not overcompensate the boiler by setting a higher value than calculated,
otherwise the boiler could be damaged.
When using indoor air, Rinnai strongly recommends the use of an indoor air
fi lter, P/N 808000025.
WARNING
!
This boiler requires adequate combustion air for ventilation and dilution of fl ue
gases. Failure to provide adequate combustion air can result in unit failure, fi 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 boiler.
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 the limited warranty.
Combustion air must be free of acid forming chemical such as sulfur, fl 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 boiler.
Unconfi ned Space:
An unconfi ned space is defi ned 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 unconfi ned space." If the “unconfi ned 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
as for a confi ned space.
(Small Room, Closet, Alcove, Utility Room, Etc.)
A confi ned space is defi ned 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 confi ned 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 fi gure 24, 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 upper,
one lower) must be positioned in confi ned spaces. The upper shall be within 12 inches
of the confi ned space and the lower opening shall be within 12 inches of the bottom
of the confi ned space. Openings must be positioned as to never be obstructed.
Combustion air provided to the boiler 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 confi ned 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 confi ned 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 in
2
/2000 Btu/hr (1100 mm2/kW) of
total input rating of all appliances in the confi ned 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 connected.
When communicating indirectly with the outdoors through vertical ducts, each
opening shall have a minimum free area of 1 in
2
/4000 Btu/hr (550 mm2/kW) of
total input rating of all appliances in the confi ned space. Combustion air to the
appliance can be provided from a well ventilated attic or crawl space.
Note the local codes for requirements for connecting an external hot water
cylinder to the boiler. The installation must comply to these codes.
Depending on the domestic hot water requirements and comfort preferences various
external hot water tanks can be connected to the boiler.
Connecting an external hot water tank to the Q175C is NOT possible.
Connecting an external hot water tank to the Q-Series solo boilers can be done in
2 ways:
1. For Q85S, Q130S, Q175S, Q205S:
Using an optional three-way valve installed in the return line under the boiler between
boiler and plumbing kit and directly controlled by the boiler control. For the Q-Series
Solo boilers a special internal three-way valve conversion kit is available (fi g. 26).
- Part.no. 804000013: For the Q85S and Q130S
- Part.no. 804000014: For the Q175S and Q205S
2. For Q85S, Q130S, Q175S, Q205S :
An external hot water tank connected on the secondary side of the plumbing kit,
seperately controlled by another device.
The capacity of the boiler must be defi ned by the installer.
i
i
i
i
i
NOTICE
NOTICE
NOTICE
NOTICE
NOTICE
The choice of the tank depends on the coil output.
The coil output of the tank must comply with the boiler output.
For the Q85S or Q130S the minimum coil output must be 85,000 BTU/hr. This to
prevent the boiler for short cycling.
The Q175S and the Q205S have limited outputs with the 3 way valve kit. Both
boilers are limited to 130,000 BTU/hr for the DHW output when using the 3 way
valve kit. Please take this into account when sizing the indirect hot water tank.
For additional information on piping and control of indirect tanks, please see
the Rinnai Boiler Applications Manual.
For additional information on the Rinnai 3-way valve indirect tank kit, please
see the installation manual for the kit.
Rinnai recommends the use of a thermostatic mixing valve on all indirect tanks
used with Q boilers on the domestic hot water side to prevent scalding. This
valve will regulate the water temperature leaving the indirect tank.
The electrical connections to the boiler must be electrically grounded 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, 3-way
valve (except Q175CN/Q175CP), temperature sensor or thermostat and an external
pump are all connected to the internal connection terminal. The connection terminal
is situated in the Control Tower.
Connecting incoming power
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. Use a step drill bit to create a
knockout in the black steel on the bottom of the boiler for a strain relief. A number of
predrilled holes can be enlarged to fi t different strain relief and conduit connections.
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.
CAUTION
CAUTION
CAUTION
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.
RISK OF ELECTRIC SHOCK.
Once the main power supply is on then there is 120V on terminals 1 to 12 when the
main switch at the front of the Control Tower 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.
- Label all wires prior to disconnection when servicing controls. Wiring errors
can cause improper and dangerous operation.
- Verify proper operation after operation servicing.
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 may be necessary to calibrate the
anticipating resistance to prevent too high temperature fl uctuations. As a standard
rule this means mercury thermostats. This resistance wire is present in the Control
Tower and must be connected to terminals 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.
When wiring an RS100 it is suggested that a jumper be placed on terminals
22 and 23 so that in the event the control is damaged the boiler will still fi re
based on outdoor reset.
A jumper should also be used when commissioning or trouble shooting the
boiler.
i
NOTICE
Power stealing thermostats cannot be connected to terminals 22 and 23.
Connection terminal Q-Series
main power supply
120 Volts for external
pump
120 Volts
Rinnai only
Rinnai only
internal or external
three-way valve motor
and
tank sensor
ARV12 outdoor sensor
Bus room thermostat
RS100 only
On/off thermostat or
External safety contact
control (Volt free)
24 Volts
maximum 100 mA
120 Volts
CAUTION
Make sure that the power consumption of each of the terminals
4-5-6 does not exceed 230W or 2 Amp.
The boiler is provided with a fully automatic microprocessor control, called CMS
Control Management System. This control simplifi es 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 boiler 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 fi 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:
• on the left the status in which the boiler is active;
Example
Example
• 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.
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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 fi 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 10).
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 fi 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 tank, the central heating return water
temperature, from which the input is adjusted, will vary.
Operation indication
(in the first display position by technical read out)
No heat demand
0
Fan pre/post purge
1
Ignition phase
2
Burner active on central heating
3
Burner active on DHW
4
Fan check
5
Burner off when room thermostat is demanding or burner off when DHW is calling
When the pump is switched
on continuously it can lead
to undesired heating up of
the central heating system
during the summer.
1
3
4
5
6
Boiler control panel fi gure 29
Only licensed professionals 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
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 Domestic 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 briefl y 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 briefl y 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 briefl y 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.
2
7
8
Some buttons have other functions.These functions are only active according to the
procedure described in chapter 11, 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
10 Starting up: Filling and de-aerating the boiler and installation
NOTICE
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NOTICE
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NOTICE
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CAUTION
!
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 13 and 14).
- 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 (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 fl ows (with bubble test using leak-search spray).
WARNING
!
WARNING
!
10.1 Requirements of the water system
Before fi lling the heating system, the complete system, including all zones, must be
thoroughly cleaned and fl ushed to remove sediment. Flush until clean water runs
free of sediment. Rinnai suggests using an approved system cleaner to fl ush the
system, but not the boiler. Always use Rinnai approved antifreezes. See the list at
the end of this chapter. Never use reverse osmosis, D.I., or distilled water for fi 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 property damage.
The central heating installation needs to be fi lled with potable water.
Use only potable water or approved glycol for fi lling the heating system.
When the water hardness of the fi 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 pH value using proper equipment or by having the water analyzed by a
water treatment company.
If pH differs from above, contact Rinnai engineering for further assistance.
Component or product damage as a result of failing to adhere to the water
quality requirements will not be covered by the limited warranty.
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
attacking the metallic components. This should be for multi-metallic components.
Make certain to check that the system fl 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. The allowed maximum concentration is 50%.
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 are listed in the Rinnai
Boiler Applicatons Manual.
Additives in the installation water are not permitted.
The system cleaners from NoBurst, Rhomar, and Fernox are not to be used in
the boiler. The boiler must be closed off (valved off) from the rest of the system
or not connected while the cleaners are in the system. The system should then
be drained and then thoroughly fl ushed with clean water to remove all the
system cleaner.
• Noble Noburst AL inhibitor
10.2 Filling the heating system
For fi lling or topping off the installation you use the fi 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 briefl y the 'STEP'-button: P XX (XX = water pressure in PSI);
5 Open the fi lling loop (Indication on display increases);
6 Fill up slowly to 16 to 18 PSI (1.1 and 1.3 bar);
7 STOP appears on the display;
8 Close the fi lling loop;
9 De-aerate the complete installation, start at the lowest point;
10 Check the water pressure and if necessary top it off;
11 Close the fi 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;
NOTICE
i
14 Check the water pressure and if necessary top it up to 16 to 18 PSI (1.1 and 1.3 bar)
15 Close the fi lling loop;
16 Press the ‘STEP’-button;
17 Be sure that the fi lling loop is closed.
18
After the automatic de-aeration program (A XX) is fi 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 typical working pressure of the installation should be between 16 and 18 PSI (1.1
and 1.3 bar) when the system is cold.
It can take a while before all air has disappeared from a fi lled installation.
Especially in the fi rst week noises may be heard which indicate the presence
of air. The automatic air vent in the boiler will remove the 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 / 0.7
bar), FILL indication remains continuously
visible, the boiler is taken out of operation.
The installation needs to be topped off.
10.3 Hot water supply (only Q175C)
Apply the water pipe pressure to the tank (open main valve and/or stop valve of the
safety group).
Vent the tank and the hot water installation by opening a hot water shut off valve.
Leave the tap open for as long as required until all air has disappeared from the tank
and the pipes and only water is fl owing from the shut off valve.
Water pressure is too low (<12 PSI / 0.8
bar), 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 (>42 PSI
/ 3 bar), 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 fl oor
because some gas is heavier than air and will settle on the fl oor.
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 fi re 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 licensed professional.
Force or attempted repair may result in a fi re or explosion.
D. Do not use this appliance if any parts have been under water. Immediately call a licensed
professional 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 fl oor.
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 the software has already been pre-programmed at the
factory. All software adjustments of the boiler control are already pre-programmed for
a heating system with radiators/convectors with a supply temperature of 176°F. The
adjustments are described in the Parameter chapter on the following page.
In certain cases parameters have to be altered in case of :
- Lower supply temperature
- High altitude/long vent length
- Minimum supply temperature
CAUTION
!
NOTICE
i
The venting / altitude calculation must always be performed during
commissioning of the boiler.
Read through the Parameter chapter to adjust the boiler to its installation.
Contact Rinnai in case of doubt.
Only licensed professionals 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 confi rm the code (code blinks1 x).
Now you have acces to the installer level. There are 4 chapters:
• Parameters
•
•
• Error-chapter (no adjustments possible)
The content of the chapters is described on the following pages.
Press briefl y the MODE-button to select one of the 4 chapters, i.e. PARA;
Information chapter (no adjustments possible) Service chapter
Press briefl y and release 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 briefl y on the STORE-button to confi rm 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)
56
Page 57
Parameter Mode
PARAFACTORY
....
1176°Fmaximum supply temperature CH68 - 176°F
2*00type of CH installation:00 - 04
3max.maximum power CH in kW (.. x3415 = .. BTU/hr)min-max
4*00control principal with on / off thermostat:
5*2.3heating curve K-factor (see also heating curve graph)0.2 - 3.5
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 CH32 - 158°F
31**146°F (154°F)DHW tank temperature with external tank sensor104 - 176°F
3601Type of three way valve DHW tank
43max.Maximum power DHW in kW (.. x3415 = .. BTU/hr)min-max
49100%Maximum pump capacity heating40-100 %
730Altitude and venting CFT. See chapter 6.7.70 - 100
8900Address of boiler in cascade
9001Display reading
....
DESCRIPTION
No pre-selection made.
Radiators, air heating, or convectors:
T max. supply 176°F K factor heating curve 2.3; gradient 10°F/min; gear differential 10°F
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
constant water circulation 22&23 closed contact day curve operation,
open contact night curve operation
no00
yes01
VC 2010 / VC 801000
VC 6940 01
No function-01
Bus thermostat00
Cascade boiler 2 to 801 - 07
°C and Bar00
°F and PSI01
00
01 DO NOT USE
02
03
04
01
RANGE
Info Mode
INFO
1°Fsupply water temperature T1
4°Freturn water temperature T2
5°FDHW temperature T3
7°Foutdoor temperature T4
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 hours
25hnumber of burner run hours CH
26hnumber of burner run hours DHW
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 onOFF - max.
2OFFfan adjustable and burner offOFF - max.
3OFFpump adjustable with burner onOFF - max.
4OFFshowroom position ON = active and OFF = non activeON - OFF
VALUE
....
DESCRIPTION
RANGE
Error Mode
ERRO
Err.L - Err.5Last saved error until 5 last previous errors
1error code
2operation status boiler
3°Fsupply water temperature T1
4°Freturn water temperature T2
5kWload (.. x3415 = .. BTU/hr)
6%pump capacity
Parameter-, Info-, Service- and Error-chapters Table 12
i
VALUE
NOTICE
DESCRIPTION
* Most of the data in this table can be requested by the RS100. Most of
the adjustments which are stated in this table are unnecessary when in
combination 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 the original factory settings that are accessible in the
current service level the boiler is in either user or 123):
- Select, when necessary, the technical read out;
- Select with the MODE-button chapter PARA;
- Press the STORE-button.
The word "Copy" will appear and factory settings are active again.
12 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 ( , or ), the boiler is switched off. Do not shut off the power
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.
CAUTION
!
In the event of freezing danger with an isolated boiler it is advisable to drain
the boiler and/or the installation.
Work on the boiler must be carried out by a licensed professional, using
correctly calibrated instruments with current test certifi cation.
These installation instructions are intended for licensed professionals, who
have the necessary knowledge and are approved for working on heating and
gas systems.
Before the boiler is fi 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.
Failure to properly commission the boiler as described in section 13 may
result unreliable burner operation, reduced component life, and unsafe boiler
operation.
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. The casing is locked with
a screw behind the door on the front (fi gure 30) and the top of the casing is hooked
behind a locking edge. After removing this screw the casing must be lifted at the
bottom by which means it is released from the locking edge. Then the casing can be
removed forward.
Behind the casing you see the transparant air box.
2
Remove this airbox only in case for service or maintenance. See fi gure 30.
The boiler settings, such as burner pressure and adjustment of the air quantity are
unnecessary in most cases, 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 fi ne adjustment of the zero pressure, which is carried out at the factory
is once-only, which means that adjusting of this value is unnecessary. Only in case of
replacing of the gas valve, venturi and/or fan will the zero pressure adjustment have
to be checked and, if necessary, adjusted to the right value.
The venturi must always be checked and adjusted when it is out of range see
section 13.3 on O2 adjustment.
Always check the installation of all parts through which gas fl ows (by bubble
test using leak-search spray).
Pump commissioning procedure should be followed before the boiler is fi red for the
fi rst time:
1. Remove the vent pump screw
2. Use a small fl at head screw driver to ensure the impeller spins freely.
3. When the impeller spins freely and water exits though the vent port the pump is
ready for operation.
4. Replace the vent screw
During the commissioning of the boiler the Rinnai Installation, Commissioning, and
Service card must be fi lled out.
60
Page 61
13.1 Testing for gas leaks
Prior to start-up of the boiler you must check the external tightness of the gas supply
valve and confi rm this in the start-up report.
WARNING
!
DANGER
!
- Before leak testing the boiler, ensure all parts of the boiler such as electronics
and wiring are properly covered and protected from the leak testing agent.
- Do not spray the leak testing agent onto cables, plugs, electrical connection
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 fi tting. The maximum test pressure allowed on
the input of the gas burner fi tting is 14 inch W.C. (35mbar).
13.2 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 + or the - button the code C123;
- Press the Store-button to confi rm 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 + button once;
Check if the boiler does one start-up attempt and four restart attempts.
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 ionization cable.
- Press the reset button.
- Check if the boiler starts-up.
CAUTION
Do not touch the inside of the ignition cable while it is disconnected during
start up of the boiler.
The O2 percentage setting is required to be checked at commissioning,
maintenance and faults and adjusted if needed.
The O
from NG to LP or from LP to NG. This process must be done with a calibrated
combustion analyzer that has been set to the correct gas type.
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;
i
Tip: If there is no demand for heat on CH, turn the hot water tap completely open
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 confi rm the code (code blinks 1 x);
- Press the MODE-button until SERV is shown;
percentage is required to be checked and adjusted after a conversion
2
checkpoint O2
NOTICE
i
adjustment screw O2 fig. 32
NOTICE
i
figure 31
- Press the STEP-button once until 1 is shown;
alternately 1 and OFF will be shown.
- Calibrate the O2 meter ;
- Place the probe of the O2 meter into the check point (see fi g. 31);
- Press the + button until the maximum value (in kW) is achieved;
The boiler will burn on full load (value on display in kW)
value in BTU/hr = x3415
When adjusting from max. to min. load it is advisable to stop at medium load
to allow the boiler to stabilize. Adjusting quickly from max. to min. could force
the boiler into an error state.
- Check the O2 percentage:
Natural Gas: full load: between 4.4% and 4.7% min. load: setting of full load +0.2% or greater
Propane: full load: between 4.8% and 5.1% min. load: setting of full load +0.2% or greater
Example:Full load set on 4.6% O2 (natural gas) then the minimum load setting should
be 4.8% or greater.
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 O2 meter do its measuring procedure.
- Adjust, if necessary, the adjustment screw to correct the O2 value
(see fi g. 32). Allow boiler to stabilize before reading the new value.
- Press the - button until is shown (keep button pressed).
With this the procedure has ended.
Page 63
High Altitude Label (example)
13.4 Measuring the ionization current
- Replace the black cover on the gas valve and secure it with the screw.
For high altitude installations, elevations between 2000 ft and 4500 ft (600 m
and 1350 m), in Canadian area it is required to fi ll out the High Altitude Label.
Place the fi lled out High Altitude Label on the controller supporting frame, on the left
side of the rating plate.
- 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 fi gure 33.
Select the μA direct current range on the measuring device. The measuring device
must have a resolution of at least 1 μA.
Ionization test fi gure 33
- 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 + or the - button the code C123;
- Press the Store-button to confi rm 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 + button until the maximum value (in kW) is achieved;
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 - button until OFF is shown (keep button pressed).
- 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.
- Switch on the sytem using the Central Heating button and the DHW button.
- Install the airbox and close all snap locks. See fi gure 34;
- Install the metal casing on the boiler;
- Lock the casing by using the screw behind the door. See fi gure 35.
Maintenance or changes to the boiler may only be carried out by a licensed
professional.
To protect yourself from harm, before performing maintenance:
- Turn off the electrical power supply by switching off the boiler at the mains power
switch or by turning off the electricity at the circuit breaker.
- Turn off the gas at the manual gas valve, usually located below the boiler.
- Turn off the incoming water supply. This can be done at the isolation valve usually
located below the boiler or by turning off the water supply to the building.
14.1 Periodic examination of venting systems and boiler
NOTICE
i
14.2 Inspection
2
1
3
Removing casing fi gure 36
The inspection of the boiler and venting system should be done every 2 years or
4000 hours and full maintenance every 4 years or 8000 hours of operation, whichever
occurs fi 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.
Please contact Rinnai for further guidance on the frequency and service
requirements. Contact details can be found on the back page of this manual.
Preparing the boiler for inspection
To carry out the inspection and maintenance activities please follow the next procedure:
- Switch off the power supply;
- Shut off the gas;
- Remove the screw behind the door on the front of the casing (fi gure 36);
- Lift the casing and remove it towards the front;
- Valve off the boiler from the system using the boiler isolation valves in the plumbing
14.2.1 Visual inspection for general signs of corrosion
14.2.2 Measuring the ionization current
14.2.3 Measuring the inlet gas pressure
- Remove the transparant air box (fi gure 37);
- Clean the box with a cloth with a simple (non-abrasive) cleaning agent;
- Check all gas and water pipes for signs of corrosion.
- Replace any pipes that are corroded.
See subsection 13.5 “Measuring the ionization current”.
See subsection 6.4.1 and .2 “Gas connection with natural gas" and "Gas connection
with propane”.
14.2.4 Testing for gas leaks
See subsection 13.1 “Testing for gas leaks”.
14.2.5 Carrying out a pressure test of the heating system
See chapter 10.2 “Filling the heating system”.
14.2.6 Checking venting systems
Check the following points:
- Is the prescribed combustion air/fl ue system used?
- Have the instructions for confi guring the fl ue system as specifi ed in the relevant Installation instruction for the fl ue gas system been observed?
- Check air intake and/or air fi lter and fl ue gas for obstruction, pollution or damage.
When an air fi lter is used the air fi lter must be replaced yearly on boilers
operating in normal circumstances.
The conditions (eg. supply air quality) in which the boiler is installed should
be taken into account. This will show whether the frequency of replacement
should be reduced or increased. If in doubt, contact RINNAI.
The fan unit and burner cassette (fi gure 38 to 4) (every 4 year maintenance)
- 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;
NOTICE
9
1
- 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, fi g. 40);
- 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.
4
fan unit and gas valve fi gure 38
NOTICE
i
figure 39
NOTICE
i
DANGER
!
3
10
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.
Heat exchanger (every 4 year maintenance)
- Check the heat exchanger for contamination. Clean this if necessary with a soft
brush and a vacuum cleaner. Prevent debris from falling down into the heat
exchanger.
Flushing the heat exchanger from the top down is not permitted
Refi tting of the components is done in reverse order.
Make sure that during refi tting the clamping rods are put in the right position.
They should be turned vertical.
If the boiler should activate with clamping rods in the wrong position it will
cause property damage, personal injury or loss of life.
Ignition electrode (every 4 year maintenance)
This can be checked by measuring the ionization current. The minimum ionization
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 every 4 year, whichever occurs fi 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;
Refi tting of the components is done in reverse order.
66
Page 67
Condensate trap and condensate tray (fi gure 41-43) (2 and 4 year maintenance)
9
10
8
Step 1: Condensate trap
- First remove the condensation cup (7);
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;
- Remove the inner trap pipe (8) which remains in the condensate tray;
- Check the O-rings of the cup as well as those from the pipe and replace if necessary;
- Clean both parts by fl ushing with clean water;
- Grease the O-rings again with acid free O-ring grease to make fi tting easier;
- If there is a leak at the condensation cup (7) or tray (9) the complete condensate
trap unit (10) has to be replaced by # 809000054;
7
Siphon figure 41
13
14
11
Condensate tray figure 42
DANGER
!
12
Step 2: Condensate tray
- Remove the plug from the fl 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 correct turning direction (red indicator, fi g. 41);
- 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 with a new one;
- Clean the condensate tray with water and a hard brush;
- Check the condensate tray for leaks.
Step 3: Refi tting is done in reverse order.
Note that all gaskets seal completely.
Make sure that during refi tting the clamping rods are put in the right position.
They should be turned vertical.
If the boiler should activate with clamping rods in the wrong position it will
cause property damage, personal injury or loss of life.
Clamping rods figure 43
DANGER
!
WARNING
!
WARNING
!
Put the boiler into operation and check the O
If replacement of new gaskets and burner mentioned in this chapter is not done
within the service interval subscribed by Rinnai the boiler can be damaged and
may cause property damage, personal injury or loss of life.
Use only original spare parts supplied by Rinnai. If non approved parts are used
the boiler can be damaged and may cause property damage, personal injury or
loss of life. Use of non-Rinnai parts will result in the voiding of the limited warranty .
Do not use substitute materials. Use only parts certifi ed with the appliance.
Visual inspection of the fl ame (2 and 4 year maintenance)
The burner must fl ame evenly over the entire surface when operating correctly. The
fl ame must burn with a clear, blue, stable fl ame.
Check the fl ame through the inspection glass in the ignition probe (fi g. 44).
The fl ame pattern should be as shown in the fi gures below.
SATISFACTORY
Ignition probe
blue fl ame
UNSATISFACTORY
Ignition probe
Water filter figure 44a
NOTICE
i
14.3.1 Reset service interval counter
yellow fl ame
Further checks:
- Inspect the pressure relief valve
- Clean the water fi lter in the return pipe
- Check the pH of the water or glycol/water mixture.
The combustion must be checked and adjusted if required at both the 2
year/4000 hour and 4 year/8000 hour service intervals with a properly working
combustion analyzer.
Verify proper operation after servicing. Always reset the service interval counter after
full maintenance interval (every 4 years or 8000 hours of operation).
At 8000 hours of use, “SERVICE” will scroll across the display. “Good” will display
as well alternatively.
To reset the 8000 hour service notifi cation:
- Enter the 1st Tier Settings: 123 Code
- Briefl y press “Mode” again until the Service Chapter is displayed (SERV)
- Hold the “Store” button until SERV fl ashes once—the service notifi cation will no
longer show during normal operation and the countdown to service will reset to
8000.
14.4 Limited warranty
For warranty conditions refer to the warranty supplied with the boiler.
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 blocking
can be of a temporary nature, however, error messages are fi xed lockings. The control
will try its utmost to prevent locking and will temporarily switch off the unit by blocking
it. The following is a list of some messages.
Blocks with a number in the last 2 positions.
Block 01:
External safety contact cut off
Block 05:
Outdoor sensor not connected
Block 60:
Incorrect parameter setting of the minimum or maximum power.
Block 67:
A T has been detected between fl 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 fl ow. The venting cycle is started. If during this cycle water fl ow is detected, the venting cycle is ended and the burner is released.
Error with a number in the last two positions.
Error 00: Poor fl ame-forming
Error 02: no fl ame-forming
Error 04: adjustment or error for voltage interruption
Error 05: adjustment
Error 12: high limit stat
Error 18: maximum fl 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
FUSE: 24V fuse defective
i
NOTICE
The following pages describes more detailed follow up instructions for solving
blockings, errors and practical circumstances. These instructions are only for
licensed professional.
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
CodeDescriptionSolution
External safety contact openRectify error as a result of which by determining contact is open.
Outdoor sensor contact open (not
connected)
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.
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.
with a fi gure on the last 2 characters.
Or repair interconnection between 24/25
Rectify error as a result of which by determining contact is open or
outdoor sensor is not connected.
Connect outdoor sensor or repair wiring (position 18/19) or replace
outdoor sensor.
Check fl 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 fi 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.
Check fl ow through the boiler and DHW tank
See the installation instructions for the hydraulic connections to the boiler
Possible causes: (radiator) shut-off valves closed or blocked water fi lter
resistance (coil) in tank to high (see pump height)
Check 3-way-valve on function and pollution.
Incorrect parameter setting for the
minimum or maximum power
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.
fl ue sensor temperature too highCheck vent system
fl ue sensor or thermostat contact
open
fl ue sensor or thermostat contact
closed
fl ue gas thermostat contact openCheck vent system
no water fl ow can be detected
through the controller. De-aeration
cycle is started. When water fl ow is
detected during this cycle, the deaeration cycle is terminated and the
burner is released.
The controller checks the water
pressure during static and
dynamic situation.
The frequence of the power supply
deviates more than + or -1.5Hz
Call Rinnai
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
Call Rinnai
Call Rinnai
or check parameter 84 for default
- check the installation for the presence of air;If there is a secondary
pump installed and it is not hydraulicly separated, it could cause
pressure differences.
- check the use of balancing valves
check if the pump is functioning and/or that the water pressure sensor is
working properly;
Polluted pump; Polluted water pressure sensor; Polluted water fi lter;
Wiring of pump.
Incorrect fl ame formation. boiler
has not been burning but an
ionization fl ow (fl ame) has still
been detected
24 Volt short-circuitCheck the 24 Volt connection. Remove all plugs with 24 Volt connections such
No fl ame formationCheck the data in Error mode. Boiler data during error.
Check whether the ionization cable and/or the electrode are responsible for a
possible short-circuit. Remove the plugs from the ionization cable connected
to the control unit and to the electrode. Now using a universal meter take a
measurement between the ionization connection and the ground, now refi t it
part by part until a short-circuit takes place.
Rectify the short-circuit and if necessary replace this part.
as: fan, pump, any three-port valve and 24 Volt plug to the connecting block.
Check short circuit of disconnected components. Switch on power again to the
control unit with the components disconnected. Reconnect the components,
which have been checked and are working.
Rectify the short-circuit or replace the short-circuited component.
Control unit errorConnector not plugged into the gas valve or defect in the wiring of the gas
The controller has detected a
program error
Control unit errorCheck 120V stability. If voltage is deviating more between +10% and -15%
The error persists after reset Software error control unit. replace the control unit. The controller will
Control unit errorMoisture on the PCB. Check if there is water leaking on or in the boiler.
Boiler has not been able to ignite any gas or has not received any gas. Boiler
tries to start 6 times with an increasing starting load after the safety time
Check whether:
- the gas valve is open;
- there is power to the gas valve;
- that the gas valve opens
The minimum gas pre-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
Boiler has gone out after ignition. Due to insuffi cient ionization the burner
has gone out after ignition
Ionization fl ow, ionization cable or the O
current should be 4 μA, the O2 should be a minimum of 4.4% for NG or 4.8%
for LP
valve.
Software error control unit. Replace the control unit. The display will
automatically load the program into the new controller.
Reset the boiler. the boiler automatically indicates this message if during an
error read-out the electrical power to the boiler is shut off. After the power
has once again switched on, if the error causing the interference is no longer
present, this message is given.
Rectify the preceding error, If Error 04 persists, and preceding errors do not
occur, replace controller.
the electrical power supply needs to stabilised.
Check the ribbon cable between the control unit and the display. 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.
automatically load the program into the new control unit.
A temperature of - 36 is displayed at position 3.
Check the wiring and/or measure the resistance of the fl ow sensor. The
resistance should be approx. 12 kOhm at 77°F.
(See table in Appendix B)
If necessary, replace the fl ow sensor
check actual fl ow temperature. suddenly increase caused by completely
hydraulic shut off of the boiler (fi lter, pump, thermostat valve, service
valve)
check fl ow sensor NTC1. measure the resistance value (see Appendix B)
exchange defective part if necessary.
Change control unit when error persists
check actual return temperature. Increase of temperature caused by
Central heating
installation gets hot
without being requested
Insuffi cient quantity of
hot water
1.
-Key of the DHW program is not
switched on
2. Cylinder sensor or thermostat defective.Replace cylinder sensor or thermostat
3. When using RS100- Check timer times for DHW program,
4. Three-port valve is not circulating to
DHW
1.
2. Room thermostat (on/off) is not giving
3. RS100 with outdoor sensor
(Room sensor-On)
4. Three-port valve is not circulating to
1.
2. Dirt in three-port valve or three-port valve
3. Expansion tank incorrectly fi tted.Connect expansion tank between three-port
1. Hot and cold water connection to the
2. Incorrect fl ow reducing valve.- Check for the type and for contamination, if
3. In the absence of positive resultsCheck for lime scale. If necessary descale or
-Key of the central heating program
is not switched on.
any signal to the boiler.
central heating position.
-Key pump program is on.
cartridge is binding.
boiler mixed up.
Switch on DHW program on the Control Tower
if necessary reset
- RS100 does not respond to DHW program
- See RS100 installation instructions
- Check wiring.
- If necessary replace the three-port valve
motor.
Switch on central heating program
Check room thermostat
- 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).
- Check timer program and set room
temperature.
Check wiring, replace the three-port valve
motor.
Switch off.
Clean or replace.
valve and pump (for Combi boiler or Solo with
external DHW tank this pipe connection is
present as standard).
Check left = cold, right = hot
necessary replace (Combi) and/or clean.
- Check the comfort synchronising valve for
the correct setting in accordance with the
installation instructions.
Do not common vent with the vent pipe of any other boiler or appliance. However,
when an existing boiler is removed from a common venting system, the common
venting system is likely to be too large for proper venting of the appliances remaining
connected to it. At the time of removal of an existing boiler, the following steps shall
be followed with each appliance remaining connected to the common venting system
placed in operation, while the other appliances remaining connected to the common
venting system are not in operation:
(a) Seal any unused openings in the common venting system.
(b) Visually inspect the venting system for proper size and horizontal pitch and
determine there is no blockage or restriction, leakage, corrosion and other
defi ciencies which could cause an unsafe condition.
(c) Insofar as is practical, close all building doors and windows and all doors between
the space in which the appliances remaining connected to the common venting
system are located and other spaces of the building. Turn on clothes dryers and any
appliance not connected to the common venting system. Turn on any exhaust fans,
such as range hoods and bathroom exhausts, so they will operate at maximum
speed. Do not operate a summer exhaust fan. Close fi replace dampers.
(d) Place in operation the appliance being inspected. Follow the lighting instructions.
Adjust thermostat so appliance will operate continuously
(e) Test for spillage at the draft hood relief opening after 5 minutes of main burner
operation. Use the fl ame of a match or candle, or smoke from a cigarette, cigar
or pipe.
(f) After it has been determined that each appliance remaining connected to the
common venting system properly vents when tested as outlined above, return
doors, windows, exhaust fans, fi replace dampers and any other gas burning
appliance to their previous condition of use.”
(g) Any improper operation of the common venting system should be corrected so the
installation conforms with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/
or CAN/CSA B149.1, Natural Gas and Propane Installation Code. When resizing
any portion of the common venting system, the common venting system should
be resized to approach the minimum size as determined using the appropriate
tables in Appendix F in the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/
or CAN/CSA B149.1, Natural Gas and Propane Installation Codes.