Rinnai E110CN Release note

8U.51.60.01/09.09 Changes reserved.
Installation & Servicing
Instructions
Pictured: E75CN, E110CN
E75CP, E110CP
High efciency condensing gas boiler
E75CN/E110CN
E75CP/E110CP
- Do not store or use gasoline or other ammable vapors and
liquids in the vicinity of this or any other appliance.
- WHAT TO DO IF YOU SMELL GAS
- Do NOT try to light any appliance.
- Do NOT touch any electrical switch.
- Do NOT use any phone in your building.
- Immediately call your gas supplier from a neighbor’s phone.
Follow the gas supplier’s instructions.
- If you cannot reach your gas supplier, call the re department.
CAUTION!
Read this manual thoroughly before installing, servicing, putting
into operation or using this boiler and vent system.
WARNING!
Improper installation, adjustment, alteration, service or
maintenance can cause property damage, personal injury or
loss of life. Refer to this manual. For assistance or additional
information consult a qualied installer or the gas supplier.
CAUTION!
The user manual is part of the documentation that is delivered
to the installation's operator. Go through the information in this
manual with the owner/operator and make sure that he or she is
familair with all necessary operating instructions.
NOTICE!
Installation and service must be performed by a qualied
installer, service technician or the gas supplier.
In the Commonwealth of Massachusetts this boiler must be
installed by a licensed Plumber or Gas Fitter.
WARNING!
If you do not follow these instructions exactly, a re or explosion may
result causing property damage, personal injury or loss of life.
These instructions to be retained by user.
Address: 103 International Drive, Peachtree City, GA, 30269
Toll-free: 1-800-621-9419 • Fax: [phone] • www.rinnai.us

Installation & Servicing Instructions Rinnai E-Series
2
Contents of instructions
These installation instructions contain important information for the safe installation, start-up and maintanance of
boilers with capacities 75,000 through 110,000 BTU/hr.
These installation instructions are intended for professional installers, who have the necessary knowledge and are
approved for working on heating and gas systems.
Subject to technical changes
Changes may be made without notice to the illustrations, process steps and technical data as a result of our policy
of continuous improvement.
Updating of documentation
Please contact us if you have any suggestions for improvements or corrections.
Find our contact details on the back of this manual.
California Proposition 65 lists chemical substances known to the state to cause cancer, birth defects, death,
serious illness or other reproductive harm. This product may contain such substances, be their origin from fuel
combustion (gas, oil) or components of the product itself.

Installation & Servicing Instructions Rinnai E-Series
3
Content
1 Safety and general instructions 4
1.1 Designated use 4
1.2 Hazard denitions 4
1.3 Symbol denitions 4
1.4 The following instructions must be followed 5
1.5 Follow these instructions for the space heating water 6
1.6 Tools, materials and additional equipment 6
1.7 Relevant Installation, Service and User manuals 6
1.8 Disposal 6
2 Regulations and guidelines 7
3 Description of the boiler 8
4 Packaging and transportation 9
4.1 Scope of delivery 9
4.2 Transportation 9
5 Installation 10
5.1 Requirements for the installation room 10
5.2 Fitting the boiler 11
5.3 Dimensions 12
5.3.1 Plumbing kits 14
5.3.2 Clearances from appliance 15
5.4 Technical specications 16
6 Connecting the boiler 17
6.1 Central heating system 17
6.1.1 Plumbing Kit installation 18
6.1.2 Safety valve 19
6.1.3 Low water cut off 20
6.2 Expansion tank 20
6.3 Underoor heating system (plastic pipes) 21
6.4 Gas supply connection 21
6.4.1. Gas connection with natural gas 22
6.4.2 Gas connection with propane gas 23
6.5 Hot water supply 24
6.6 Condensate drain pipe 24
6.7 Vent system and air supply system 25
6.7.1 Intake / Exhaust Guidelines 25
6.7.2 Examples vent and air supply systems 26
6.7.3 Installation of the vent system 28
6.7.4 Recommended vent/air intake terminal position 29
6.7.5 Dimensioning of the exhaust and air intake duct 31
6.7.6 Combustion air and vent piping lengths 32
6.7.7 Calculation of compensation factor 33
6.7.8 Room Air System (outdoor combustion air) 34
7 Electrical connections 37
8 Boiler controls 40
8.1 Explanation of the function buttons 41
9 Starting up: Filling and de-aerating the boiler and installation 42
9.1 Requirements of the water system 42
9.2 Filling the heating system 43
9.3 Hot water supply 44
10 Adjustments 46
10.1 Altering adjustments 46
10.2 Activating factory settings (green button function) 49
11 Isolating the boiler 49
12 Commissioning 50
12.1 Testing for gas leaks 51
12.2 Testing the Ignition Safety shut off device 51
12.3 Checking for contamination 52
12.4 Checking of the zero pressure control 53
12.5 Checking the O254
12.6 Measuring the ionization current 55
12.7 Installing the casing 55
13 Maintenance 56
13.1 Periodic examination of venting and boiler 56
13.2 Inspection 56
13.2 Maintenance activities 58
13.3 Warranty 60
14 Parts of the boiler 61
15 Blocks and errors 62
16 Other errors 86
17 Spare parts 92
18 Parts list vent system 102
19 Common venting guidelines 103
Appendix AOutdoor Reset Sensor Data 104

Installation & Servicing Instructions Rinnai E-Series
4
1 Safety and general instructions
Please observe these instructions in the interest of your own safety.
1.1 Designated use
The boiler is designed for heating water for a central heating system and generating
domestichotwater.Theboilerisdeliveredwithaburnercontroller(MCBA)pre-installed.
The boiler can be tted with a modulating outdoor reset sensor ARV12 (included with
the boiler) or an On/Off thermostat or relay panel end switch (accessories).
1.2 Hazard denitions
The following dened terms are used throughout the documentation to bring attention
to the presence of hazards of various risk levels. Notices give important information
concerning the operation of the product.
DANGER:
Indicates the presence of hazards that will cause severe personal injury, death or
substantial property damage.
WARNING:
Indicates the presence of hazards that can cause severe personal injury, death or
substantial property damage.
CAUTION:
Indicates presence of hazards that will or can cause minor personal injury or property
damage.
CAUTION:
Risk of electric shock. Indicates presence of hazards due to electric shock.
NOTICE:
Indicates special instructions on installation, operation or maintenance that are
important but not related to personal injury or property damage.
1.3 Symbol denitions
The following (safety) symbols may be encountered in these installation instructions
and on the unit:
This symbol indicates that the unit must be stored away from frost.
This symbol indicates that the packaging and/or contents can be damaged as
a result of insufcient care taken during transport.
This symbol indicates that, whilst still in its packaging, the unit must be
protected from weather conditions during transport and storage.
!
CAUTION
CAUTION
NOTICE
i
!
DANGER
!
WARNING

Installation & Servicing Instructions Rinnai E-Series
5
1.4 The following instructions must be followed
- The boiler must only be used for its designated purpose, as described in the
Installation Instructions.
- Each unit is tted with a data plate. Consult the details on this plate to verify whether
the boiler is compliant with its intended location, e.g.: gas type, power source and
venting classication.
- Only use the boiler with the accessories and spare parts listed.
- Other combinations, accessories and consumables must only be used if they are
specically designed for the intended application and do not affect the system
performance and the safety requirements.
- Maintenance and repairs must only performed by trained professionals.
- Installation of a condensing gas boiler must be reported to the relevant gas utility
company and have it approved.
- You are only allowed to operate the condensing gas boiler with the vent system
that has been specically designed and approved for this type of boiler.
- Please note that local permission for the vent system and the condensate water
connection to the public sewer system may be required.
You must also respect:
- The local building codes stipulating the installation rules.
- The local building codes concerning the air intake and outlet systems and the
chimney connection.
- The regulations for the power supply connection.
- Thetechnicalruleslaiddownbythegasutilitycompanyconcerningtheconnection
of the gas connection to the local gas mains.
- The instructions and standards concerning the safety equipment for the water/
space heating system.
- The Installation Instructions for building heating systems.
- The boiler must be located in an area where leakage of the boiler or connections
will not result in damage to the area adjacent to the boiler or to lower oors of
the structure. When such locations cannot be avoided, it is recommended that a
suitable drain pan be installed under the boiler.
- The boiler must be installed in such way that the all components are protected
from water (dripping, spraying, rain etc.) during boiler operation and service.
- The boiler must not be installed on or against carpeting.
- Do not restrict or seal any air intake or outlet openings.
- If you nd any defects, you must inform the owner of the system of the defect and
the associated hazard in writing.
DANGER. Gas is ammable and may cause an explosion.
Beware if you smell gas: there may be an explosion hazard!
If the information in these instructions is not followed exactly, a re or explosion may
result causing property damage, personal injury or death.
- Do not store or use gasoline or other ammable vapors and liquids in the vicinity
of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
- Do NOT try to light any appliance.
- Do NOT touch any electrical switch.
- Do NOT use any phone in your building.
- Immediately call your gas supplier from a neighbor’s phone. Follow the gas
supplier’s instructions.
- If you cannot reach your gas supllier, call the re department.
Should overheating occur or the gas supply fail to shut off, do not turn off
or disconnect the electrical supply to the pump. Instead, shut off the gas
supply at a location external to the appliance.
!
DANGER
!
WARNING

Installation & Servicing Instructions Rinnai E-Series
6
1.5 Follow these instructions for the space heating water
Unsuitable heating system water can cause the formation of scale or sludge, which
affects system efciency. It can also cause corrosion and reduce life of the heat
exchanger.
– You must follow Rinnai guidelines for boiler water quality.
– Thoroughly ush the system prior to lling.
– Follow the Rinnai cleaning instructions.
– Never use water that has been treated by salt bedding exchangers, reverse
osmosis, D.I., or distilled water to soften the water to ll the heating system.
– Do not use inhibitors or other additives unless approved by Rinnai for that
purpose!
– When frost protection of the heating system is desired, only use Rinnai-approved
antifreezes, Noble NoburstAluminum, or Rhomar RhoGardAluminum Safe Multi-
Metal.
– When using oxygen-permeable pipes, e. g. for under oor heating systems, you
must separate the system from the boiler using plate heat exchangers.
– Valve off boiler while ushing system, do not introduce any system cleaner into the
boiler loop. Flush system thoroughly to remove all system cleaner before lling
boiler.
See the Rinnai Boiler Applications Manual and chapter 10 for additional information.
1.6 Tools, materials and additional equipment
For the installation and maintenance of the boiler you will need:
– Standard tools for space heating, gas and water tting
– Digital manometer, capable of reading both positive and negative pressure
(accuracy -0.001” W.C.)
– Combustion analyzer (intended for use with condensing boilers)
– Digital multimeter
– pH digital meter
– Metric Allen wrenches
– Metric socket wrenches
In addition, a handtruck with a fastening belt is useful.
Formaintenancetotheboileryouneed,apartfromstandardtoolingforspaceheating,
gas and water tting the following items:
- Rinnai toolkit Q and E-Series
1.7 Relevant Installation, Service and User manuals
– Vent system
– Rinnai Boiler Applications Manual
1.8 Disposal
– Dispose of the boiler packaging in an environmentally sound manner.
– Dispose of components of the heating system (e.g. boiler or control device), that
must be replaced in an environmentally responsible manner.

Installation & Servicing Instructions Rinnai E-Series
7
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/NFPA54. In Canada, installation must be in accordance with the
requirements of CAN/CSA B149.1, Natural Gas and Propane Installation Code.
Where required by the authority having jurisdiction, the installation must comply to
the Standard for Controls and Safety Devices for Automatically Fired Boilers, ANSI/
ASME CSD-1.
Install CO detectors per local regulations. Boiler requires an inspection every 2 years
and maintenance every 4 years or 4000 hours. See maintenance section chapter 14.
Operating Limits of the boiler:
Max. boiler temperature: 176 °F (80.0 °C)
Max. operating pressure: 45 psi (3 bar)
Max Allowable Working Temperature ASME: 200 °F (93 °C)
Max. Allowable Working PressureASME: 45 psi (3 bar)
The hot water distribution system must comply with all applicable codes and
regulations. When replacing an existing boiler, it is important to check the condition
of the entire hot water distribution system to ensure safe operation.
For installations in the Commonwealth of Massachusetts, the following local
requirements apply in addition to all other applicable NFPA requirements:
For direct- vent boilers, mechanical-vent heating appliances or domestic hot water
equipment, where the bottom of the vent terminal and the intake is installed below
four feet above grade the following requirements must comply:
1) If not present on each oor level where there are bedrooms, a carbon monoxide
detector and alarm must be placed in a living area outside the bedrooms. The
carbon monoxide detector and alarm must comply with NFPA 720 (2005 Edition).
2) A carbon Monoxide detector and alarm shall be located in the room that houses
the appliance and/or equipment and shall:
a) Be powered by the same electrical circuit as the appliance and/or equipment
such that only one service switch services both the appliance and the carbon
monoxide detector;
b) Have battery back-up power;
c) Meet ANSI/UL 2034 Standards and comply with NFPA 720 (2005 Edition); and
d) Have been approved and listed by a Nationally Recognized Testing Lab as
recognized under 527 CMR.
3) A product-approved vent terminal must be used, and if applicable, a product
approvedairintakemustbeused.Installationshallbeperformedinstrictcompliance
with the manufacturer’s instructions. A copy of the installation instructions shall
remain with the appliance and/or equipment at the completion of the installation.
4) A metal or plastic identication plate shall be mounted at the exterior of the building,
four feet directly above the location of vent terminal. The plate shall be of sufcient
size to be easily read from a distance of eight feet away, and read “Gas Vent
Directly Below”.
NOTICE
i

Installation & Servicing Instructions Rinnai E-Series
8
For direct-vent boilers mechanical-vent heating boilers or domestic hot water
equipment where the bottom of the vent terminal and the intake is installed higher
than four feet above grade the following requirements must comply:
1) If not present on each oor level where there are bedrooms, a carbon monoxide
detector and alarm must be placed in a living area outside the bedrooms. The
carbon monoxide detector and alarm must comply with NFPA 720 (2005 Edition).
2) A carbon monoxide detector shall:
a) Be located inn the room where the boiler and/or equipment is located;
b) Be either hard-wired or battery powered or both; and:
c) Shall comply with NFPA 720 (2005 Edition).
3) A product-approved vent terminal must be used, and if applicable, a product-
approved air intake must be used. Installation shall be in strict compliance with
the manufacturer’s instructions.Acopy of the installation instructions shall remain
with the appliance and/or equipment at the completion of the installation.
3 Description of the boiler
The Rinnai E boiler is a room sealed, condensing and modulating central heating
boiler, with an integrated DHW fascility.
The boiler is provided with a compact stainless steel heat exchanger with smooth
tubes. This design is a well thought out principle using durable materials.
The boiler burns gas for supplying heat. The heat is transferred in the heat exchanger
to the water in the central heating system. By cooling down the exhaust gases
condensate is formed. This results in high efciency. The condensate, which has
no effect on the heat exchanger and the function of the boiler, is drained through
condensate collector trap.
The boiler is provided with an intelligent control system (CMS Control Management
System). The boiler anticipates the heat demand of the central heating system or the
domestic hot water facility system.
Whenan outdoorsensorisconnectedtotheboileritwilloperateweather dependantly
using outdoor reset. This means that the boiler control measures the outside
temperature and supply temperature. With this data the boiler calculates the optimal
supply temperature for the installation.
Explanation of the appliance type: Rinnai E110CN
E = Type
110 = Nominal load in (x1000) BTU
C = C = Combi
N = Natural Gas (P = Propane Gas)
Different boilertypes:
Room sealed boiler
The boiler retreives its com-
bustion air from outside then
discharges the ue gasses to
the outside.
Condensing
Retrieves heat as much as
possible from the ue gas-
ses. Water condensates on
the heat exchanger.
Modulating
Stepless higher or lower
burning according to the heat
demand.
Combi boiler with integrated DHW fascility
E75CN E110CN
E75CP E110CP

Installation & Servicing Instructions Rinnai E-Series
9
4 Packaging and transportation
4.1 Scope of delivery
The boiler is supplied ready for use.
• Please check if the packaging is intact.
• Check if all the items listed are included in the delivery.
The supply kit is contents:
• Boiler with casing; • Template;
• Automatic air separator (inside the boiler); • Installation instructions;
• Wall mounting suspension bracket; • User manual;
• Bronze adapter ttings; • Service manual;
• 3" PP exhaust adapters (x2); • Outdoor sensor ARV12
• Plumbing kit • 3/4" gas shut off valve
• Fixing material consisting of plugs and screws;
4.2 Transportation
The boiler may be damaged when not secured properly.
- Only transport the boiler using appropriate transportation equipment, such as a
handtruck with a fastening belt or special equipment for maneuvering steps.
- When shipping the boiler must be secured on the transportation equipment to
prevent it from falling off.
- Protect all parts against impacts if they are to be transported.
- Follow the transportation markings on the packaging.
• Packaged boilers must always be lifted and carried by two people, or you must
use a handtruck or special equipment for transport.
!
CAUTION

Installation & Servicing Instructions Rinnai E-Series
10
5 Installation
5.1 Requirements for the installation room
- The room where the boiler will be installed must always be frost free.
- Do not store or use gasoline or other ammable vapors and liquids in the
vicinity of this or any other appliance.
- Never use or store any chlorinated detergents or halogenated hydrocarbons
(e.g. in spraycans, solvents and detergents, paints, adhesives) in proximity
of the boiler.
- The boiler must be installed in such a way that it is protected from water
(dripping, spraying, rain, etc.) during boiler operation and service (circulator
replacement, condensate trap, control replacement, etc.)
- This boiler is for intended for indoor installations only.
!DANGER
Products to avoid present in boiler room
and/or around combustion air intake
Spray cans containing chloro-/fluorcarbons
Ammonium and/or ammonium solutions
Permanent wave solutions
Chlorinated waxes and/or cleaners
Swimming pool chemicals based on chlorine
Calcium chloride used for thawing
Sodium chloride used for water softening
Refrigerant leaks
Paint or varnish removers
Hydrochloric acid/muriatic acid
Cements and glues
Antistatic fabric softeners used in clothes dryers
Chlorine-type bleaches, detergents, and cleaning solvents
found in household laundry rooms
Adhesives used to fasten building products and
other similar products
Areas likel
y
to have contaminants
Dry cleaning/laundry areas and establishments
Swimming pools
Metal fabrication plants
Beauty shops
Refrigeration repair shops
Photo processing plants
Auto body shops
Plastic manufacturing plants
Furniture refinishing areas and establishments
New building construction
Remodeling areas
Garages with workshops

Installation & Servicing Instructions Rinnai E-Series
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5.2 Fitting the boiler
- Remove the packaging materials.
- Lay the boiler on its back during unpacking. Remove the casing from the
boiler. This part can be left apart during installation. It must be placed on the
boiler and xed with the screw behind the door and in the 4 quick releases
before the boiler is started up.
Turn the boiler to its side and remove the wall bracket from the back of the
boiler by removing the 2 screws.
The boiler can be mounted practically to any wall with the suspension bracket and the
enclosed mounting equipment.
- The wall must be at and of sufcient strength in order to be able to securely hold
and support the boiler weight with its water content.
- Take note of the necessary space around the boiler for installation of venting
system, pipework and servicing. See drawing on pages 12 to 15.
The location of the boiler can be determined by using the template supplied with the
boiler documentation. Remember to account for the spacing of the plumbing kit.
- Drill the necessary holes using the template
- Install the mounting bracket to the wall using the supplied mounting materials
Lifting and carrying precautions:
To avoid personal injury please follow these recommendations:
- Always lift the boiler with 2 people or use special equipment.
- When lifting the boiler, bend the knees, and keep the back straight and feet
apart.
- Do not lift and twist at the same time.
- Lift and carry the boiler close to the body.
- Wear protective clothing and gloves to protect from any sharp edges.
Lift the boiler only by the boiler's rear wall.
- Dispose the packaging materials.
!
CAUTION
NOTICE
i
NOTICE
i
!
WARNING

Installation & Servicing Instructions Rinnai E-Series
12
Boiler type E75CN E110CN
E75CP E110CP
inches / mm inches / mm
A Height 25.6" / 650 25.6" / 650
B Height with expansion tank 34.3" / 870
C Width 19.7" / 500 19.7" / 500
D Depth 15.6" / 395 15.6" / 395
E Left side / vent 13.2" / 335 13.2" / 335
F Center to center / vent and air supply 4.7" / 120 4.7" / 120
G Back / vent 10.6" / 270 10.6" / 270
H Left side / gas pipe 9.8" / 250 9.8" / 250
J Left side / supply pipe 5.9" / 150 5.9" / 150
K Left side / return pipe 13.8" / 350 13.8" / 350
L Left side / condensate pipe 15.9" / 405 15.9" / 405
N Left side / cold water pipe 11.2" / 285 11.2" / 285
P Left side / hot water pipe 8.5" / 215 8.5" / 215
Q Pipe length of g* 0.7" / 19 8.5" / 215
R Pipe length of c* 1.6" / 40 1.6" / 40
S Pipe length of f, r, k and w* 2" / 50 6.3" / 160
T Back / Center of pipe c, k and w* 1" / 26 1" / 26
U Back / Center of pipe f, g and r* 2" / 50 2" / 50
VPipe length vent co-axial
Pipe length vent parallel 3.7" / 95 7" / 177
3.7" / 95
7" / 177
Combi
5.3 Dimensions
dimensions table 1
dimensions figure 1
wall
C
EF
A
U T
S
wall
N
Q
R
B
D
H
J
KL
G
ceiling
P
V
0.4"
10
2"
50
Min. 10" /
250mm

Installation & Servicing Instructions Rinnai E-Series
13
connection diameters table 2
boiler connections / mounting points figure 2
f w g k r c
Connection for combustion air supply and vent system
f w g k r c
Boiler type E75CN E110CN
E75CP E110CP
Vent system / Combustion air supply 80/125mm 80/125mm
Gas pipe - g 3/4"M-NPT 3/4"M-NPT
Supply pipe - f 0.87" x 3/4"M-NPT /
22mm G3/4"x 3/4"M-NPT
Return pipe - r 0.87" x 3/4"M-NPT /
22mm G3/4"x 3/4"M-NPT
Condensate pipe - c 0.87" / 22mm 0.87" / 22mm
Cold water pipe - k 0.59" x 3/4"M-NPT /
15mm G1/2"x 3/4"M-NPT
Hot water pipe - w 0.59" x 3/4"M-NPT /
15mm G1/2"x 3/4"M-NPT
Combi

Installation & Servicing Instructions Rinnai E-Series
14
5.3.1 Plumbing Kits
Rinnai supplies with each type of boiler a Plumbing kit. Find below the dimensions.
See chapter 6.1 for additional information.
9.00
(REF. 16.07)
(REF. 5.12) 200mm
7.87
(REF. 17.76)
1 1/4”1 1/4”
Plumbing Kit 1
Suitable for:
E75CN / E75CP
E110CN / E110CP
plumbing kit 1 figure 3

Installation & Servicing Instructions Rinnai E-Series
15
clearances to the boiler table 3
service clearances to the boiler figure 4
wall
ceiling
For closet installation: clearance is 1” / 25mm from the front.
Low Loss Header
Clearances to combustible and non-Combustible is 0 inch for sides, top, front and oor/ground
0.4"
10
2"
50
Min. 10" /
250mm
15.7"
400 24"
600
5.3.2 Clearances from boiler
Minimum required clearances
to combustibles
Minimum required clearances
to non-combustibles
Recommended
service clearances
All types
A
ll types
A
ll types
inch / mm inch / mm inch / mm
Top of boiler 2" / 50 2" / 50 10" / 250
Back of boiler 0" 0" 0
Front of boiler 6" / 150 6" / 150 24" / 600
Left side of boiler 2" / 50 2" / 50 2" / 50
Right side of boiler 2" / 50 2" / 50 2" / 50
Floor / Ground 12" / 300 12" / 300 30" / 762
Vent 0" 0" 0"

Installation & Servicing Instructions Rinnai E-Series
16
5.4 Technical specications
Technical specifications Table 4
Boiler type E75CN E110CN E75CP E110CP
Input Hs CH BTU/hr 75,000 110,000 75,000 110,000
kW 22 32 22 32
Propane orifice diameter inch / mm n.a. n.a. 0.16" / 4.15 0.20" / 5.2
Display indication at start-up 22.t 32.t 22.tP 32.tP
QnOutput non-condensing CH BTU/hr 67,500 98,000 67,500 98,000
kW 19.8 28.8 19.8 28.8
QnOutput EN677 efficiency CH BTU/hr 74,100 108,000 74,100 108,000
kW 21.7 31.7 21.7 31.7
QnOutput AFUE CH BTU/hr 72,400 105,700 72,400 105,700
kW 21.2 30.7 21.2 30.7
Efficiency at 98.6/86°F (36/30°C) part load,
Hs, EN677 CH % 98.8 99.0 98.8 99.0
AFUE according IBR % 96.5 96.1 96.5 96.1
O2(at full load) %
Electr. power consumption max. W
Electr. power consumption stand by W
Current V/Hz
Fuse rating A
Degree of protection acc. EN 60529
Weight (empty) lbs / kg 91 / 39 101 / 40 91 / 39 101 / 40
Water content CH gallon / liter 0.9 / 3.5 1.3 / 5 0.9 / 3.5 1.3 / 5
Water content DHW gallon / liter 0.13 / 0.5 0.18 / 0.7 0.13 / 0.5 0.18 / 0.7
After run time pump CH min
After run time pump DHW min
PMS Water pressure min.-max. PSI / bar
PMW Water pressure DHW max. PSI / bar
Flow temperature max. °F / °C
Pump type UPS20-48 UPS20-58 UPS20-48 UPS20-58
Available pump height CH PSI / kPa 3.8 / 26 0.7 / 5 3.8 / 26 0.7 / 5
Approvals
DHW flow (at 50°F) gallon/min 4.6 4.6
DHW flow (at 10°C) liter/min 17.4 17.4
DHW flow (at 75°F) gallon/min 2.1 3.2 2.1 3.2
DHW flow (at 23.9°C) liter/min 7.9 12.1 7.9 12.1
DHW temperature (Tin=50°F (10°C) °F / °C
Pressure difference DHW PSI / bar 2.9 / 0.2 4.4 2.9 / 0.2 4.4
Content expansion vessel gallon / liter 2.1 / 8 3.1 / 12 2.1 / 8 3.1 / 12
Pre-charge pressure expansion vessel PSI / bar
CSA number
14.5 / 1
E-Series
Propane gas
145
14
120Vac/60Hz
4.8 - 5.1
5AF & 4AT
IPX4D (IPX0D in case of room air)
Natural gas
4.4 - 4.7
ASME, CSA
2183087
176 / 80
5
1
14-43 / 1-3
150 / 10
176 / 80

Installation & Servicing Instructions Rinnai E-Series
17
6 Connecting the boiler
The boiler has the following connection pipes;
- The central heating circuit pipes.
These must connected to the plumbing kit by means of adapter ttings.
See further chapter 6.1;
- The gas supply pipe.
It is provided with a 3/4" male thread into which the tail piece of the gas valve can
be screwed. See further chapter 6.4;
- Cold and hot water pipes for domestic hot water (DHW).
Theseconsistof3/4"(15mm)copperpipeandcanbeconnectedtotheinstallation
by means of 1/2" M-NPT adapter ttings. See further chapter 6.5;
- The condensation drain pipe.
It consists of an oval 1" (22 mm) plastic pipe. The drain pipe can be connected to
this by means of an open connection. If the open connection is tted in a different
location, then the pipe can be lengthened by means of a 1 1/4" (32 mm) PVC
sleeve. See further chapter 6.6;
- The vent system and air supply system.
Itconsistsofaconcentricconnection3"/5"(80/125mm).Theboilercanbeconverted
to a twin pipe connection that will accept 80mm ue and intake air or with the use
of the included adapters 3” PVC/CPVC ue and intake. See further chapter 6.7.
The pipe to be connected to the boiler must be cleaned before connecting in
order to prevent dirt from entering and damaging the boiler.
6.1 Central heating system
Connect the central heating system according to its instructions.
The boiler pipes can be connected to the installation by means of compression ttings.
Reducers should be used for connecting to thick-walled pipe (welded or threaded).
When removing the plastic sealing caps from the pipes, dirty testing water
may drain from the boiler.
A Plumbing Kit must be tted to the boiler.
The boiler, when used in connection with a refrigeration system, must
be installed so the chilled medium is piped in parallel with the boiler with
appropriate valves to prevent the chilled medium from entering the boiler.
The boiler piping system of a hot water boiler connected to heating coils
located in air handling units where they may be exposed to refrigerated air
circulation must be equipped with ow control valves or other automatic
means to prevent gravity circulation of the boiler water during the cooling
cycle.
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Installation & Servicing Instructions Rinnai E-Series
18
6.1.1 Plumbing Kit installation
Rinnai supplies specic Plumbing Kits with each boiler type, which must be tted
directly underneath the boiler on the supply and return pipe. Use of the Rinnai boiler
without the plumbing kit will result in the void of warranty.
To protect the entire heating system we recommend installing a dirt particle
trap in the return circuit. When the boiler is installed to an existing heating
system this trap is required. Use of a Y strainer is not permitted as substitute
for a dirt trap.
- Install shut-off valves immediately before and after the dirt particle lter to allow
the lter to be cleaned.
- Position 3 (gure 6) is a garden house thread boiler drain, that can be used to
drain the boiler or add water tratment additives to the system, such as inhibitors
or glycol.
- Position 4 (gure 6) is the supply connectionfor an idirect tank when used with the
optinal 3-way valve kit.
- For information on locating the expansion tank and system ll, please see the
Rinnai Boiler Applications Manual.
Thoroughly ush all pipes and radiators. We recommend the use of a Rinnai
approved system cleaner. Refer to the Rinnai Boiler Applications Manual for
an approved list of Rinnai system cleaners.
- Refer to the installation template and chapter 5.3 for the pipe connection
dimensions.
- Fit the bronze adapter ttings, supplied with the boiler (g. 5, pos. 4) rst to the
Plumbing Kit and then to the boiler.
- Connect the expansion tank to the system. See chapter 6.2.
- Connect the pipes so that they are free from strain.
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12
3
4
5
67
1. Plumbing kit
2. Safety valve
3. Filling connection
4. Bronze adapter ttings
5. Service valves
6. Flow 1 1/4"
7. Return 1 1/4"
8. External pump
Plumbing Kit installation g. 5
8
Compression fittings.
Parts:
1. Nut
2. Ferrule
3. Fitting
Fitting instructions:
1. Push the complete
fitting over the pipe as
far as possible. Ferrule
should be over the
pipe completely.
2. Turn the nut handtight
clockwise.
3. Use 2 wrenches, one
to hold the fitting on
its place, the other
for tighten the nut
clockwise in 3/4 turn.
21
3

Installation & Servicing Instructions Rinnai E-Series
19
The boiler has a self-adjusting and self-protecting control system for the load and the
pumpcapacity.Bythismeansthetemperaturedifferencebetweenthesupplyandreturn
water is checked and controlled.
If the installation resistance is over the stated value; the load will be adjusted until
an acceptable temperature difference between supply and return water has been
obtained. If, after this, the temperature difference isstill not acceptable then the boiler
will switch off and wait until an acceptable temperature has arisen.
If an unacceptable temperature is detected, the control will repeatedly try to achieve
water ow over the boiler. If not the boiler will switch off.
The electrical side of an external circulation pump (g. 6, pos. 8) can be connected
to the Control Tower. This pump thus switches simultaneously to the boiler pump.
The maximum absorbed current consumption of the external circulation pump may
not exceed 120V, 2 Amp. If a pump with a larger current draw is required an isolation
relaymustbeused. See the Rinnai BoilerApplicationsManual for further information.
The extra external pump must be selected according the installation resistance and
required ow.
As standard the boiler is provided with a water lter in the return pipe of the boiler, so
that debris of the central heating water is prevented from affecting the boiler.
When using more than one boiler in an installation please refer to the cascade
installation instructions.
The boiler is designed to be used on pressurized heating systems only.
pump index lines graph 1
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0
2
4
6
8
10
12
14
0 2 4 6 8 10 12
Q [gallons/min]
PSI
UPS 20-48 UPS 20-58 Resistance OSS1 Resistance OSS2
32.3
27.7
23.0
18.5
13.8
9.2
4.6
0
Feet of head
Resistance E75CUPS 20-48
25% UPS 20-58 100% Resistance E110C

Installation & Servicing Instructions Rinnai E-Series
20
6.1.2 Safety valve
An ASME 30 psi pressure relief valve is installed on the plumbing kit included
with the boiler.
6.1.3 Low water cut off
The Rinnai E boiler has a factory installed pressure switch type Low Water Cut
Off (LWCO). Check your local codes to see if a Low Water Cut Off is required
(LWCO) and if this device conforms to local code. See the Rinnai Boiler
Applications Manual for further information.
The Low water cut off is not serviceable.
6.2 Expansion tank
The E-Series boilers are equiped with an internal expansion tank.
The tank of the E75CN and E75CP is positioned inside the boiler casing. This
expansion tank has a pre-charge pressure of 14.5 PSI / 1 Bar and a capacity of 2.1
gallon / 8 litres.
The tank of the E110CN and E110CP is positioned directly beneath the boiler and
together with the casing forms a single entity with the boiler.
Thecasingcanberemovedbypullingforwards.Theexpansiontankhasapre-charge
pressure of 14.5 PSI / 1 Bar and a capacity of 3.1 gallon / 12 litres.
Ifa largercapacity expansion tank is needed for theinstallation astandard expansion
vessel should be tted additionally.
In that case choose an expansion tank volume, of which the summary is geared to
the installation’s water capacity. The pre-charge pressure depends on the installation
height above the expansion tank. Fit the expansion tank into the return pipe as close
as possible to the boiler. The extra expansion tank should be sourced locally. Please
refer to the expansion tank manufacturer for further information.
Fill the expansion tank to a minimum of 14.5 psi.
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