Intellihot iN401, iN501 Operation & Installation Manual

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WARNING

— Ne pas entreposer ni utiliser d’essence ou

ni d’autres vapeurs ou liquides inammables à proximité de cet appareil ou de tout autre appareil.

QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ

•

Ne pas tenter d’allumer d’appareil.

•

Ne touchez à aucun interrupteur; ne pas vous servir des téléphones se trouvant dans le bâtiment.

•

Appelez immédiatement votre fournisseur de gaz depuis un voisin. Suivez les instructions du fournisseur.

•

Si vous ne pouvez rejoindre le fournisseur, appelez le service des incendies.

— L’installation et l’entretien doivent être assurés

par un installateur ou un service d’entretien qualié ou par le fournisseur de gaz.

AVERTISSEMENT

Assurez-vous de bien suivre les instructions données dans cette notice pour réduire au minimum le risque d’incendie ou d’explosion ou pour éviter tout dommage matériel, toute blessure ou la mort.

If the information in these instructions is not followed exactly, a re or explosion could 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 supplier, call the

re department.

— Installation and service must be performed by

a qualied installer, service agency, or the gas supplier.

Operation & Installation Manual

iN401

iN501

Thank you for purchasing this Intellihot unit.

This unit is designed for years of trouble free operation, and I urge you to read and follow the instructions in this “Operation & Installation Manual.”

Our mission to create a better heating system began back in the winter of 2005 when a tank

water heater broke down and ooded my basement. By combining the principles of a diesel

engine’s robustness, robotics intelligence, and marine environment durability, we set out to design a unit from the ground up that would outperform and outlast all others.

Quickly, our goal grew from not just making a better water heater, but creating an intelligent

water heating and delivery system. Innovation is our hallmark and simplicity, eciency, and

durability are at the core of every lntellihot product.

Our products are proudly engineered and built in Galesburg, Illinois. lntellihot has helped commercial customers throughout the nation save thousands of dollars while eliminating downtime. Our talented team of dedicated professionals is ready to assist you and help your business succeed.

I thank you for purchasing our lntellihot products.

Sincerely,

Sri Deivasigamani CEO, lntellihot Inc.

Table of Contents

1. General Information

1.1 Items Shipped With Water Heater..........2

1.2 Serial Number Locations .................2

2. Safety

2.1 Safety Signal Words.....................3

2.2 Installation Warnings ....................3

3. TechnicalSpecications

3.1 ....................5

Specifications Chart. .

3.2 Nomenclature..........................6

3.3 High Elevation Installations ...............6

3.4 ClearanceRequirements .................6

3.5 7

Connection Specifications. ...............

3.6 Exhaust Gas Standards ..................7

3.7 Overall Dimensions......................8

3.8 ...................9

Configuration Options

4. Quick Reference Installation Guide

4.1 Install the Water Heater..................11

4.2 Pre-Startup Instructions .................11

5. Preparation Before Installation

5.1 Selecting an Indoor Installation Site ....... 13

6. Gas Connection

6.1 QuickReferenceInstallationInstructions ... 14

6.2 Fuel Source .......................... 14

6.3 GasPressureRequirements ............. 14

6.4 GasPressureRegulator ................. 14

6.4.1 VentingofGasSupplyRegulators... 15

6.5 Length of Gas Supply Line ............... 15

6.6 Gas Piping Material .................... 15

6.7 DetermineCorrectGasPipeDiameter ..... 15

Gas Pipe Drip Leg and Shut-off Valve

6.8 15

6.9 ConnectingGasLinetoUnit ............. 16

6.10 Gas Pipe Sizing Tables ...................17

.....

7. Air Intake Inlet and Exhaust Gas Outlet Pipe Connections

7.1 QuickReferenceInstallationGuide ........ 19

7.2 TypicalSingleUnitAirIntakeInletand

Exhaust Gas Outlet Pipe Installation ....... 19

7.3 Two Pipe Vent System (Direct Vent) ......20

7.3.1 ....20

7.3.2 ...... 21

7.3.3 SideWallAirIntakeInletandExhaust

7.3.4 RoofAirIntakeInletandExhaust

Single Pipe Venting System (Power Vent)

7.4

7.4.1 SingleUnit .....................22

7.4.2 MultipleUnits ................... 23

7.5 CombustionAirRequirements ............ 24

7.6 IntakeAirInletandExhaustGasOutlet

Pipe Diameter and Length ...............24

7.7 ........25

Venting Clearance Specifications. .

7.8 Exhaust Gas Outlet Pipe Materials ........26

7.9 AirIntakeInletPipeVentMaterials ........26

7.10 RecommendedExhaustGasOutletPipe

Transitions ........................... 27

Single Unit Configurations. . . . .

Multiple Unit Configurations .

Gas Outlet Pipe Termination ....... 21

Gas Outlet Pipe Termination .......22

..22

8. Water Connections

8.1 QuickReferenceInstallationInstructions ...28

8.2 HotWaterConnection..................28

8.3 ColdWaterConnection .................29

8.4 29CondensateDrainLine ......... .........

9. Electrical Power

9.1 ElectricalRecommendations ............. 31

9.2 ConnectionInstructions................. 31

10. Adjusting CO2 Level

10.1 General Information ....................32

10.2 AdjustmentProcedure .................. 32

11. Natural Gas to Propane Conversion

11.1 General Information ....................35

11.2 ConversionProcedure .................35

12. Operation

12.1 ControlPanel ......................... 37

12.2 Turning Water Heater ON and OFF ........ 37

12.3 Setting the Time ......................38

12.4 AdjustingtheWaterTemperature .........38

12.5 Security .............................39

12.5.1 Setting Passcode Protection....... 39

12.5.2 ChangingPasscode ..............40

12.5.3 Forgot Passcode ................ 41

12.6 N/A ............................. 41

12.7 Temp / Flow ......................... 41

12.8 Life Screen.......................... 42

12.9 Unit Information ...................... 43

12.10

More Screens. ........................ 44

12.10.1 Cellular ........................44

12.10.2 Error History ...................44

12.10.3telliCareService

(Subscribe at Startup)............45

13. Connecting Multiple Units

13.1 General Information ....................48

13.2 Installation Procedure ..................48

13.2.1 telliCareforMultipleUnits.........49

13.3 VentingforMultipleUnits ...............49

14. Maintenance

14.1 Maintenance-FreeCirculationPump.......50

14.2 Heat Engine Locations ..................50

14.3 CondensateSedimentCupCleaning .......50

15. Wiring Diagrams and Troubleshooting

15.1 OperationalFlowChart .................53

15.2 CompleteWiringDiagram(allmodels) .....54

15.3 ControlBoardWiringDiagram............55

15.4 Troubleshooting Guide..................56

16. Serviceable parts. . . . . . . . . . . . . . . . . . . . . . .

17. Requirements for State of Massachusetts

17.1 Notice Before Installation .............

18. Warranty

18.1 Warranty. ..............

Product Warranty

19.

19.1 Warranty. ..............

..............

WARNING

DANGER

— Ne pas entreposer ni utiliser d’essence ou

ni d’autres vapeurs ou liquides inammables à proximité de cet appareil ou de tout autre appareil.

QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ

• Ne pas tenter d’allumer d’appareil.

•

Ne touchez à aucun interrupteur; ne pas vous servir des téléphones

se trouvant dans

le bâtiment.

• Appelez immédiatement votre fournisseur de gaz

depuis un voisin. Suivez les instructions du fournisseur.

• Si vous ne pouvez rejoindre le fournisseur,

appelez le service des incendies.

— L’installation et

l’entretien doivent être assurés par un installateur ou un service d’entretien qualié ou par le fournisseur de gaz.

AVERTISSEMENT

If the information in these instructions is not followed exactly, a re or explosion could 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 supplier, call the

re department.

— Installation and

service must be performed a qualied installer, service agency, or the gas supplier.

This product complies with ANSIZ21.10.3 (2011) / CSA 4.3 Gas Water Heater. For use as potable water heating.

To avoid product damage, personal injury, or

product. Improper installation, adjustment, alteration, or maintenance can cause injury, loss of life, and/or property damage. This water heater should be installed and serviced by a qualified technician. The lack of proper service can result in a dangerous condition.

Due to Intellihot’s policy of continuous product improvement and technology, the design and/or technical specifications in this manual are subject to change without notice.

This manual contains safety information, installation instructions, and maintenance procedures. It must be left with the homeowner or placed near the water heater in a noncombustible location. The customer should retain this manual for future reference.

even possible death, carefully read, understand, and follow all the instructions in this Operation and Installation manual before installing this

Certified to

NSF/ANSI 372

Contact Information

Call us, your dealer, first if you have any questions about this product. We can help answer questions about installation, operation, or if there are damaged or missing parts when unpacking this unit from the shipping box.

Dealer Contact Information

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1. General Information

1.1 Items Shipped With Water Heater

The shown in the illustration are shipped loose with the water heater.

Temperature and

Pressure Relief Valve

(must be installed)

Communication Cable

Keys

1.2 Serial Number Locations

The unit’s serial number is located on the left side of the unit. Please provide this serial number when inquiring about service or warranty solutions. ASME detail is located on the information plate attached to the cabinet next to the rating label on the left side.

UnitSerialNumber:______________________________

HeatEngine1(ASME)SerialNumber:_____________

HeatEngine2(ASME)SerialNumber:_____________

DateofInstallation:___ / ___ / ______

Operator

Manual

iN401 - iN501 General Information 2 May2019-Revision00

2. Safety

DANGER

WARNING

CAUTION

NOTICE

SAFETY INSTRUCTIONS

WARNING

DANGER

WARNING

2.1 Safety Signal Words

Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. This signal word is limited to the most extreme situations.

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

Indicates that equipment or property damage can result if instructions are not followed.

A. This water heater does not have a pilot. It is equipped

with an ignition device which automatically lights the burner. Do not try to light the burner manually.

B. BEFORE OPERATING, smell all around the water

heater area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS:

• Do not try to light any appliance.

• Do not touch any electric switch; do not use any phone in your building.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the fire or police department.

C. Use only your hand to turn the manual gas shut-off

valve. Never use tools. If manual gas shut-off valve will not turn by hand, don’t try to repair it. Call a qualified service technician. Force or attempted repair may result in a fire or explosion.

Safety instructions (or equivalent) signs indicate specific safety-related instructions or procedures.

Note: Contains additional information important to a

procedure.

2.2 Installation Warnings

DO NOT use this water heater for any purpose other than water heating.

Read, understand, and follow the Installation and Operation manuals, including all warnings and precautions, before operating this water heater. If you do not follow these instructions exactly, a fire or explosion may result, causing property damage, personal injury, or loss of life.

Follow all local codes and the most recent edition of the National Fuel Gas Code (ANSI Z223.1/NFPA 54) in the USA or the Natural Gas and Propane Installation Code in Canada (CSA B149.1).

This water heater must be installed by a licensed plumber, gas fitter, and/or professional service technician. Installation by unqualified person(s) voids the warranty.

Designed for operations at outlet temperature(s) not in excess of 190°F (88°C).

DO NOT use or store flammable liquids around the water heater, including gasoline, oils, spray paints, etc.

DO NOT operate this water heater unless it is properly vented to the outside (the exhaust vent piping must be connected from the unit directly to the outside). Improper venting can cause a build-up of carbon monoxide, which can result in brain damage or death. Exhaust gases must be completely expelled out of the building.

This water heater is factory preset for NATURAL GAS but may be field converted for use with propane. For propane conversion, refer to the Propane (LPG) Conversion section of this manual. Connecting the water heater to any other gas supply can result in property damage, serious injury, or even death.

This water heater is suitable for use in potable water heating applications. The cold and hot water fittings on the top of the water heater MUST NOT be connected to any heating system.

The water heater temperature is factory set to 120°F (49°C). Hot water temperatures above 125°F can cause severe burns instantly or death from scalds. If the proposed water heater outlet temperature is to be set above 125°F, installation of a thermostatically controlled (or temperature limiting) mixing valve is recommended for all hot water going to faucets to avoid the risk of scalding. Examples include commercial applications where 140°F (60°C) is often needed or if the space heating temperature required is higher than the domestic hot water. Always check the temperature of the hot water before bathing, showering, washing, etc.

Protect against snow and debris accumulation around the vent terminations. Regularly inspect the exhaust vent pipe and the air intake pipe to ensure they remain clear from obstructions at all times.

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CAUTION

Make sure you know the location of the gas shut-off

SAFETY INSTRUCTIONS

valve and how to operate it. Immediately close the gas shut-off valve if the water heater is subjected to fire, overheating, flood, physical damage, or any other damaging condition that might affect the operation of the unit. Have the water heater checked by a qualified technician before resuming operation.

If the water quality is known to have high acidity and/ or high hardness, water treatment is recommended. Consult the local water authority.

DO NOT use this appliance if any part has been under water.

DO NOT reverse the cold water and gas connections as this will damage the gas valve.

DO NOT overtighten fittings as damage may occur, causing internal leakage.

The appliance should be located in an area where leakage within the unit or at its connections will not result in damage to the surrounding area. The manufacturer will not be responsible for any damage resulting from leaking if adequate drainage is not provided.

iN401 - iN501 Safety 4 May2019-Revision00

3. Technical Specifications

3.1 Specifications Chart

Technical Data

Type Indoor, Floor-Mounted

Fuel Preset for natural gas but convertible to propane

Minimum Input (BTUs/hour) 30,000

Maximum Input (BTUs/hour) 399,999 499,999

Maximum Output (BTUs/hour) 375,999 469,999

Thermal Efficiency 94%

Turn Down Ratio (TDR) 13.3:1 16.7:1

Water Inlet / Outlet Connection 1-1/2” NPT

Gas Inlet Connection 1-1/2” NPT

Condensate Drain Connection 3/4” PVC

Maximum Condensate Flow Rate (GPM) 2.8 3.6

Dimensions H X W X D (inches) 67.5 X 20 X 20 (15.6 cu. ft)

Service Clearances 1” on all sides, 6” on top, 12” in front (Required for proper service)

Weight (lbs) 345

Venting Type

Venting Materials (USA) Sch. 40 PVC, Sch. 40 CPVC, Polypropylene, Stainless Steel (AL29-4C)

Venting Materials (Canada) Type BH Gas Vent Classes: II A (PVC), II B (CPVC), II C (Polypropylene), I (AL294C SS)

Venting Size (Diameter) 4”

Max 4” Vent Length – Single Pipe/Power Vent 250’ * 180’ *

Max 4” Vent Length – Two Pipe / Direct Vent 125’ * 90’ *

* Venting Note: From the maximum length above, deduct 5 ft. per 90° elbow and 2 ft. per 45° elbow.

Ignition Electronic Spark Ignition

Temperature Range 100°F – 190°F

Temperature Stability +/- 4°F

Installation Location Ambient Temperature 40°F – 130°F

Safety Flame Rod, Thermal Fuse, Overheat Prevention Device, Fan Speed Monitor, Flue Temperature Monitor, Blocked Vent Detector, Dual Flame

Water Pressure Min / Max (PSI) 30/160

NG/LP- Min. Gas Pressure (Full Fire)

NG/LP - Maximum Static Gas Pressure

Gas Pressure for Adjustments

Electrical 120V AC, 60 Hz

Power Consumption Max 9.5 Amps, 16W (Standby)

Internal Water Volume (gallons) 1

Features and Approvals iN401 iN501

Built-In Redundancy Multiple Heat Exchangers with Individual Control

Cascading

Common Venting Yes, Up to 4 Units

Heat Exchanger Expandable, Stainless 316L

Appliance Certication to ANSI Z21.10.3 ETL

SCAQMD Ultra Low Nox (under 20 PPM)

ASME HLW

Performance Specification

Hot Water Output (45°F Rise) 16.8 21.0

Hot Water Output (70°F Rise) 10.8 13.5

Hot Water Output (90°F Rise) 8.4 10.5

Hot Water Output (100°F Rise) 7.6 9.4

Hot Water Output (140°F Rise) 5.4 6.7

Warranty Heat Engine Coil – 10 years, All Other Parts – 2 years

iN401 iN501

Direct Vent (2 pipe – air intake and exhaust gas outlet), Power Vent (1 pipe – exhaust gas only)

8” W.C. for Natural Gas, 11” W.C. for Propane

Specification

Sensing

2.5” W.C.

14” W.C.

Masterless,, Automatic Rotation

Note: Due to continuous product improvements, the design and technical specifications are subject to change without notice.

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3.2 Nomenclature

Exhaust Port

Pressure Relief Valve

Hot Water Outlet

Air Intake

Gas Inlet

3.3 High Elevation Installations

For operation at elevations above 2,000 feet, the hot water delivery capacity should be reduced by 4% for each 1,000 feet above sea level.

Clearance Requirements

In order for the water heater to operate properly and efficiently, the clearances specified in the table below are required.

1”

6”

(top)

Recirculation Inlet

Cold Water Inlet

1”

Service Clearances. If multiple units are installed, the side clearance can be shared between the two units.

Location Required

From

Combustibles

Top 6” (15 cm) 2” (51 cm) 6” (15 cm)

Back 5/8” (16 mm) 5/8” (16 mm) 1” (25 mm)

Sides 1” (25 mm) 1/2” (13 mm) 1” (25 mm)

Front 2” (5 cm) 2” (5 cm) 12” (31 cm)

Bottom 0” (0 mm) 0” (0 mm) 0” (0 mm)

Service clearances are required dimensions to allow for normal service of the unit.

From Non-

Combustibles

12”

Service

Clearance

Drain Hose

iN401 - iN501 Technical Specifications 6 May2019-Revision00

3.4 Connection Specifications

Connections

Description Specification

GasSupplyInletConnection 1-1/2” NPT

WaterSupplyInletConnection 1-1/2” NPT

HeatedWaterOutletConnection 1-1/2” NPT

Exhaust Gas Vent

AirIntakeInlet

4” Polypropylene

CondensateDrainConnection 3/4”

120

Power Supply

Use the 4” adapter provided when using PVC or CPVC pipe.

Using sizes other than specified can cause damage to the water heater

VACPower, Max. 9.5A

and will void the warranty.

3.5 Exhaust Gas Standards

CO2 and CO Standards

Description CO

High Fire 9.1% to 9.3% < 200 ppm

Low Fire 9.1% to 9.3% < 60 ppm

High Fire 10.1% to 10.5% < 200 ppm

Low Fire 10.1% to 10.5% < 60 ppm

Range (%) Max. CO Level (ppm)

Natural Gas

Propane Gas

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3.6 Overall Dimensions

1-1/2 NPT GAS INLET

4" PVC OR PP AIR INTAKE

429,00 [16.89]

4" PVC OR PP EXHAUST

ELECTRICAL ACCESS PANEL

3X 90,00

[3.54]

279,00 [10.98]

90,00 [3.54]

254,00 [10.00]

405,50 [15.96]

356,81

[14.05]

TOP

1-1/2 NPT WATER OUTLET

3/4" NPT T&P PORT

158,00 [6.22]

3X 24,00 [0.94]

60,00

[2.36]

POWER (CABLE STRAIN RELEIF)

254,00 [10.00]

508,00 [20.00]

29,77 [1.17]

FRONT DISPLAY

3/4" PVC CONDENSATE DRAIN

REAR

134,25 [5.29]

50,80 [2.00]

102,45 [4.03]

303,11 [11.93]

50,80 [2.00]

25,00 [0.98]

54,36 [2.14]

151,55

[5.97]

SIDE

262,50 [10.33]

465,14 [18.31]

160,34

[6.31]

254,00 [10.00]

FRONT

1713,50 [67.46]

RECIRCULATION RETURN

1-1/2" NPT WATER INLET

3,99 [0.16]

3X ?15,88

[0.63]

BOTTOM

iN401 - iN501 Technical Specifications 8 May2019-Revision00

3.7 Configuration Options

Cold Water Supply

Gas Supply

Expansion

Tank

HOT WATER FIXTURES

Hot Water

Supply

LEGEND

Pressure Relief Valve

Isolation Valve Check Valve Pipe Coupling Pipe Cap Recirculation Pump

System with no storage tank and without mixing valve.

Cold Water Supply

Gas Supply

Expansion Tank

Recirculation Line

HOT WATER FIXTURES

Supply

Traditional Tank-Type Heater

Hot Water Return

LEGEND

Pressure Relief Valve

Isolation Valve Check Valve Pipe Coupling Pipe Cap Recirculation Pump

Hot Water Return

Recirculation Line

Multiple unit system with mixing valve but no storage tank.

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Cold Water Supply

Gas Supply

HOT WATER FIXTURES

Hot Water

Supply

LEGEND

Pressure Relief Valve

Isolation Valve Check Valve Pipe Coupling Pipe Cap Recirculation Pump

Expansion

Hot Water Return

Tank

Recirculation Line

Multiple unit system with mixing valve but no storage tank.

iN401 - iN501 Technical Specifications 10 May2019-Revision00

4. Quick Reference Installation Guide

Air Intake

4.1 Install the Water Heater

When installing the water heater, follow all local building codes and the current edition of the National Fuel Gas Code (ANSI Z223.1/NFPA 54) in the USA, or National Gas and Propane Installation Code (CAN/CGA B149.1) in Canada.

Note: For water heater installations in Massachusetts,

refer to section, “16. Requirements for State of Massachusetts” on page 60.

1. Select an installation location For an interior or exterior location refer to section “5. Preparation Before Installation” on page 13.

2. Check the quality of the water to determine if additional treatment would be beneficial to the function and efficiency of the water heater. For additional information refer to section “5. Preparation Before Installation” on page 13.

3. Make all necessary gas connections. For additional information refer to section “6. Gas Connection” on page 14.

4. Make all necessary venting connections. For additional information refer to section “7. Air Intake Inlet and Exhaust Gas Outlet Pipe Connections” on page

19.

5. Make all necessary water connections. For additional information refer to section “8. Water Connections” on page 28.

6. Make all necessary electrical connections. “9. Electrical Power” on page 31.

4.2 Pre-Startup Instructions

1. Recheck the hot and cold water lines, the gas line, condensate drain line, the fresh air inlet, and exhaust vent to make sure they are properly connected.

Exhaust Port

Gas Inlet

Pressure Relief Valve

Hot Water Outlet

Recirculation Inlet

Note: For additional electrical protection, the use of a surge protection device is recommended. Damage caused by power surges is not covered by the warranty.

7. If necessary, convert the water heater from the factory preset of using natural gas to using propane. Refer to “11. Natural Gas to Propane Conversion” on page 35 for the required instructions.

8. As part of the propane conversion process, the CO and CO values must be adjusted. This process is also

required when installing the water heater at altitudes over 8,000 feet. This procedure should be performed only by a qualified technician. To check and/or adjust the CO and CO levels, refer to “10. Adjusting CO2 Level” on page

32.

9. If connecting multiple units together, refer to “13. Connecting Multiple Units” on page 48.

10. Fill out the Warranty Card and return it to Intellihot. For

a copy of the card go to “18. Product Warranty” on page

63.

Cold Water Inlet

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2. Open the gas supply valve, cold water valve, and hot water valve.

5. Turn ON the power switch at the electrical junction box and turn ON the ON/OFF switch inside the front cabinet door. The water heater’s display panel should turn ON.

Hot Water Valve

Cold Water Valve

Gas Valve

3. With the unit OFF, open a nearby hot water faucet and allow the water to run through the unit until all the air is removed from the water lines and from the water heater.

4. If multiple units are being installed, follow these instructions for each unit.

6. Follow the instructions in this manual and on the unit’s display screen. For additional information refer to section “12. Operation” on page 37.

iN401 - iN501 QuickReferenceInstallationGuide 12 May2019-Revision00

5. Preparation Before Installation

NOTICE

5.1 Selecting an Indoor Installation Site

Note: When installing the water heater, follow all local

building codes and the current edition of the National Fuel Gas Code (ANSI Z223.1/NFPA 54) in the USA, or National Gas and Propane Installation Code (CAN/ CGA B149.1) in Canada when installing this product.

Note: For water heater installations in Massachusetts,

refer to section “16. Requirements for State of Massachusetts” on page 60.

1. Select an interior location for the installation. Each installation is unique; therefore, take the time to find the best location for the water heater.

a. Install the water heater near locations that use hot

water, such as bathroom, kitchen, or laundry room faucets.

b. Select a location that minimizes the length of the

water pipe.

c. If the distances are long or if the faucet or appliance

requires “instant” hot water, we recommend running a recirculation line back to the water heater from the farthest fixture.

d. Insulate the hot water supply and recirculation lines.

e. Select a location away from foot traffic and away from

areas where dust, debris, chemical agents, or other combustible materials could accumulate.

f. Allow sufficient space for service and maintenance

access to all gas, water, and drain connections.

g. Make sure the location meets all building code

requirements.

2. Minimize the distance that the exhaust gas outlet and air intake inlet must travel to an exterior wall.

a. The exhaust vent outlet must not be located next to

a walkway, near soffit vents, crawl space vents, or other areas where condensate (water vapor) could cause damage or create a hazard. Refer to the

Venting Clearance Specications section for additional

information.

b. The fresh air inlet vent must be separated from the

exhaust vent per guidelines in section “7. Air Intake Inlet and Exhaust Gas Outlet Pipe Connections” on page 19.

c. Contaminated or dirty air drawn into the intake pipe

can damage the water heater. The warranty does not cover damage caused by airborne contaminants.

3. Locate the unit close to a drain and near gas and water connections.

The water heater produces a significant amount of condensate during normal operation and should be located near a suitable drain where damage from a possible leak will be minimal. Installing the water heater in a location without a drain will void the warranty and the manufacturer will not be responsible for any resulting water damages that may occur. For additional information, refer to the Condensate Line Installation section.

4. Locate the water heater and all the water pipes in an area where the ambient temperature always remains above freezing.

a. When the water heater is connected to an electrical

power supply, it will automatically prevent the water from freezing inside the unit.

b. The unit’s freeze protection system will not prevent

the water in the external piping from freezing.

In cold climates, if there is a power failure, the unit’s freeze protection system will not operate and can result in water freezing inside the heat engine. To prevent damage to the water heater, turn OFF the gas supply and inlet water valve. Drain the unit completely. Damage caused by freezing water is not covered by the warranty.

5. Select an appropriate location for the combustion air and exhaust pipes to exit the building, as shown in the Venting Clearance Specications section in this manual.

6. Check the water quality.

Proper maintenance of the water heater is required to ensure that the water meets EPA quality standards. The following table shows the maximum contaminant levels allowed, based on the EPA National Secondary Drinking Water Regulations (40 CFR Part 143.3). Refer to section “17. Warranty” on page 61 for additional information.

If you suspect that your water is contaminated in any way, discontinue use of the water heater and contact an authorized technician or licensed professional.

If the incoming water is known to have a high mineral content or “hardness” (see warranty section), treatment is recommended upstream from the water heater.

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6. Gas Connection

WARNING

NOTICE

FIRE AND/OR EXPLOSION HAZARD

To avoid serious injury or even death, the gas line installation and the gas line inlet pressure test must be done by a licensed professional.

Always match the water heater with the type of gas supplied to the unit (natural gas or propane). The water heater is factory preset for natural gas.

Make sure the gas line pressures are within normal limits. Pressures outside normal limits can result in poor performance and hazardous operating conditions.

6.1 Quick Reference Installation Instructions

1. Determine fuel source; natural gas or propane as shown in “6.2 Fuel Source” on page 14.

2. Measure gas pressure as shown in “6.3 Gas Pressure Requirements” on page 14.

3. Install a gas pressure regulator and vent line if gas pressure is above maximum recommendations as shown in “6.4 Gas Pressure Regulator” on page 14.

4. Measure the length of the supply line as shown in “6.5 Length of Gas Supply Line” on page 15”.

5. Select the proper gas piping material as shown in “6.6 Gas Piping Material” on page 15.

6. Select the proper gas piping diameter as shown in “6.7 Determine Correct Gas Pipe Diameter” on page 15.

7. Install a drip leg on the gas piping as shown in “6.8 Gas Pipe Drip Leg and Shut-off Valve” on page 15.

8. Install a manual shut-off valve as shown in “6.8 Gas Pipe Drip Leg and Shut-off Valve” on page 15.

9. Test all gas line connections for leaks.

6.2 Fuel Source

1. Natural gas is the factory preset.

2. To convert the unit to propane, refer to the Propane (LPG) Conversion section in this manual.

6.3 Gas Pressure Requirements

iN series water heaters are designed to operate at gas pressures as low as 2.5” WC (at maximum firing rate). Gas inlet pressures to each unit should not exceed 14” WC under any condition (when unit is firing or not firing).

Do not fire (operate) the water heater until all connections have been completed and the heat engine is filled with water.

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Natural Gas Static Gas Pressure

Parameters Specifications

Minimum Static Gas Pressure

RecommendedGasPressure 8”W.C.

Maximum Static Gas Pressure 14”W.C.

2.5”W.C.(non-corrugated,black iron)

6.4 Gas Pressure Regulator

1. If

the gas inlet pressure is higher than recommended, install a gas pressure regulator to lower gas pressure to an acceptable level.

2. The gas pressure regulator must have the same or higher minimum to maximum modulation range as the model it is regulating. For example, an iN401 gas pressure regulator should have a modulation range of 30,000 BTU/h to 399,999 BTU/h.

3. Regulators should be mounted with a minimum of 12” of straight length pipe on either side and a recommended 6 ft from the appliance. If regulator manufacturer recommends more distance, then follow their guidelines.

4. When multiple units are connected use a dedicated gas pressure regulator for each unit.

5. To convert the unit to propane, refer to the Propane

(LPG) Conversion section in this manual. For additional information refer to “11. Natural Gas to Propane Conversion” on page 35.

6.4.1 Venting of Gas Supply Regulators

Make sure the gas supply regulator is properly vented by following all local codes and the gas regulator manufacturer’s recommendations.

1. The vent pipe must be at least the same size as the regulator vent.

2. When multiple units are connected, each regulator must have a separate vent line.

3. Vent lines must not be connected together or connected with any other appliance requiring external venting.

4. When selecting the size, the pipe diameter must be increased by one size for every 20 feet of pipe.

a. Each 90° elbow is equivalent to approximately:

4.5 feet for nominal pipe sizes of up to 1-1/2”

10.5 feet for nominal pipe sizes of up to 4”.

b. Each 45° elbow is equivalent to approximately:

2 feet for nominal pipe sizes of up to 1-1/2” 5 feet for nominal pipe sizes of up to 4”.

6.5 Length of Gas Supply Line

1. Make sure the length supply line is correctly sized.

a. Measure the length of the gas supply line from the

gas meter to the water heater or other appliances requiring gas. The diameter of the pipe must be in relation to the length.

b. The total length of gas piping, as well as fitting pressure

drop, must be considered when sizing the gas piping. Total equivalent length should be calculated from the meter or source location to the last heater connected.

c. Gas pipe size should be selected on the total

equivalent length. The gas volume for cfh flow will be the input divided by the calorific value of the fuel to be supplied.

d. Use the Gas Pipe Sizing tables in this manual or refer

to the gas line manufacturers sizing information to determine the correct diameter for the supply pipe.

e. The diameter of the gas lines, shown in the illustration,

will vary according to the specific installation requirements.

6.6 Gas Piping Material

1. All gas piping and components must comply with NFPA local codes, and utility requirements minimum. Only gas approved fittings, valves, or pipe should be utilized.

2. Standard industry practice for gas piping is Schedule 40 iron pipe and fittings. All high and low gas pressure piping systems must comply with local utility and building codes.

3. Assembled piping should be clean of all scale, debris, metal particles, or foreign material.

4. The piping must be supported from the floor, ceiling, or walls and by the water heater itself.

6.7 Determine Correct Gas Pipe Diameter

Note: The water heater should be the first appliance to be

connected to the gas supply line.

1. Determine the gas requirement of the water heater(s) and other appliances requiring gas.

2. Size the pipe diameter according to the COMBINED total maximum BTUH volume for all the appliances as if they were all operating at the same time. Use the “6.10 Gas Pipe Sizing Tables” on page 17.

3. Select the proper header pipe according to the number of units being connected together, as shown in the chart.

Header Sizing for Multiple iN Units

Number of

Heaters

Sch 40 Iron

Pipe

1 2 3 4

2” 2” 3” 3”

4. The maximum pressure drop from the source to the final water heater must not exceed 0.3” W.C.

5. The maximum gas flow rate required is the sum of the maximum inputs of each unit divided by the heat of combustion of the fuel supplied at the location, (approximately 1,030 BTU per cubic foot for natural gas or 2,520 BTU per cubic foot for propane).

Note: The fuel supplier or utility should be consulted to

confirm that sufficient volume and normal pressure is provided to the building at the discharge side of the gas meter or supply pipe.

6.8 Gas Pipe Drip Leg and Shut-off Valve

1. Install a gas pipe drip leg on each water heater to prevent dirt, condensation, or debris from entering the gas inlet.

Drip Leg

2. Local codes may require multiple units to have a full size drip leg on the main gas supply line and one on each unit.

3. The drip leg should have a removable clean-out cap.

4. The gas pipe must not be supported by the drip leg.

5. Following local building codes when selecting and installing a shut-off valve.

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6. Local codes may require multiple units to have a shut-off

NOTICE

valve on the main gas supply line and one on each unit.

6.9 Connecting Gas Line to Unit

Note:Always clean the inside of the gas line of any dirt or

debris before connecting the piping to the unit.

Main Supply Line

Manual

Manual Shut-off Valve

Drip Leg

Manual Shut-off Valve

Shut-off Valve

Drip Leg

Manual Shut-off Valve

Drip Leg

Main Supply Line

Drip Leg

2. Install a manual shut-off valve as described in “6.8 Gas Pipe Drip Leg and Shut-off Valve” on page 15

Shut-off Valve

Union

3. Install a drip leg in “6.8 Gas Pipe Drip Leg and Shut-off Valve” on page 15.

4. Continue installing pipe to reach the main gas supply connection.

5. Test all gas pipe connections.

a. All the gas pipe connections should be tested as

prescribed in NFPA 54.

b. In multiple unit applications, each unit should be

isolated before testing any piping system may exceed the allowable pressure of 14.0” W.C..

1. Install a 4-5/8” OD flanged steel coupling and gasket with a short piece of 1-1/4” NPT black pipe.

Do not fire (operate) the water heater until all connections have been completed and the heat engine is filled with water.

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6.10 Gas Pipe Sizing Tables

This information is for reference only. Refer to gas pipe manufacturer specifications for actual delivery capacity. Contact the local gas supplier for actual BTU/ft3 rating. This data copied from the National Fire Protection Association Article 54 (NFPA

54).

Pipe Sizes and BTU/h Capacity (NATURAL GAS). Use this table for static gas pressure

LESS THAN 5” W.C.

Length

including

fittings (feet)

10 360,000 678,000 1,390,000 2,090,000 4,020,000 6,400,000 11,300,000 23,100,000

20 247,000 466,000 957,000 1,430,000 2,760,000 4,400,000 7,780,000 15,900,000

30 199,000 374,000 768,000 1,150,000 2,220,000 3,530,000 6,250,000 12,700,000

40 - 320,000 657,000 985,000 1,900,000 3,020,000 5,350,000 10,900,000

50 - 284,000 583,000 873,000 1,680,000 2,680,000 4,740,000 9,660,000

60 - 257,000 528,000 791,000 1,520,000 2,430,000 4,290,000 8,760,000

70 - 237,000 486,000 728,000 1,400,000 2,230,000 3,950,000 8,050,000

80 - 220,000 452,000 677,000 1,300,000 2,080,000 3,670,000 7,490,000

90 - 207,000 424,000 635,000 1,220,000 1,950,000 3,450,000 7,030,000

100 - - 400,000 600,000 1,160,000 1,840,000 3,260,000 6,640,000

125 - - 355,000 532,000 1,020,000 1,630,000 2,890,000 5,890,000

150 - - 322,000 482,000 928,000 1,480,000 2,610,000 5,330,000

175 - - 296,000 443,000 854,000 1,360,000 2,410,000 4,910,000

200 - - 275,000 412,000

Note: BTU/h capacities are based on specific gravity of 0.6, pressure drop of 0.5” WC

3⁄4" 1" 1-1/4" 1-1/2" 2" 2-1/2" 3" 4"

794,000 1,270,000 2,240,000 4,560,000

Pipe Sizes and BTU/h Capacity (NATURAL GAS). Use this table for static gas pressure

GREATER THAN 5” W.C.

Length

including

fittings (feet)

10 404,000 949,000 1,787,000 3,669,000 5,497,000 10,588,000 16,875,000 29,832,000 43,678,000

20 286,000 652,000 1,228,000 2,522,000 3,778,000 7,277,000 11,598,000 20,503,000 30,020,000

30 233,000 524,000 986,000 2,025,000 3,034,000 5,844,000 9,314,000 16,465,000 24,107,000

40 202,000 448,000 844,000 1,733,000 2,597,000 5,001,000 7,971,000 14,092,000 20,632,000

50 - 397,000 748,000 1,536,000 2,302,000 4,433,000 7,065,000 12,489,000 18,286,000

60 - 360,000 678,000 1,392,000 2,085,000 4,016,000 6,401,000 11,316,000 16,569,000

70 - 331,000 624,000 1,280,000 1,919,000 3,695,000 5,889,000 10,411,000 15,243,000

80 - 308,000 580,000 1,191,000 1,785,000 3,437,000 5,479,000 9,685,000 14,181,000

90 - 289,000 544,000 1,118,000 1,675,000 3,225,000 5,140,000 9,087,000 13,305,000

100 - 273,000 514,000 1,056,000 1,582,000 3,046,000 4,856,000 8,584,000 12,568,000

125 - 242,000 456,000 936,000 1,402,000 2,700,000 4,303,000 7,608,000 11,139,000

150 - 219,000 413,000 848,000 1,270,000 2,446,000 3,899,000 6,893,000 10,093,000

175

200 - - 353,000 726,000 1,087,000 2,094,000 3,337,000 5,900,000 8,638,000

Note: For 1/2” line BTU/h capacities are based on specific gravity of 0.6, pressure drop of 4.6” WC and 5.0” WC. For all other line sizes, capacities are

based on specific gravity of 0.6, pressure drop of 3.0” WC

1/2" 3⁄4" 1" 1-1/4" 1-1/2" 2" 2-1/2" 3" 4"

- 202,000 380,000 780,000 1,169,000 2,251,000 3,587,000 6,342,000 9,285,000

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Pipe sizes and BTU/h capacity (PROPANE). Use this table for static gas pressure

GREATER THAN 5” W.C.

Length

including

fittings (feet)

10 409,000 608,000 1,150,000 2,350,000 3,520,000 6,790,000 10,800,000 19,100,000 39,000,000

20 289,000 418,000 787,000 1,620,000 2,420,000 4,660,000 7,430,000 13,100,000 26,800,000

30 236,000 336,000 632,000 1,300,000 1,940,000 3,750,000 5,970,000 10,600,000 21,500,000

40 204,000 287,000 541,000 1,110,000 1,660,000 3,210,000 5,110,000 9,030,000 18,400,000

50 - 255,000 480,000 985,000 1,480,000 2,840,000 4,530,000 8,000,000 16,300,000

60 - 231,000 434,000 892,000 1,340,000 2,570,000 4,100,000 7,250,000 14,800,000

80 - 212,000 400,000 821,000 1,230,000 2,370,000 3,770,000 6,670,000 13,600,000

100 - - 372,000 763,000 1,140,000 2,200,000 3,510,000 6,210,000 12,700,000

125 - - 349,000 716,000 1,070,000 2,070,000 3,290,000 5,820,000 11,900,000

150 - - 330,000 677,000 1,010,000 1,950,000 3,110,000 5,500,000 11,200,000

175 - - 292,000 600,000 899,000 1,730,000 2,760,000 4,880,000 9,950,000

200 - - 265,000 543,000 814,000 1,570,000 2,500,000 4,420,000 9,010,000

Note: The line BTU/h capacities are based on specific gravity of 1.5, pressure drop of 0.5” WC.

1/2" 3⁄4" 1" 1-1/4" 1-1/2" 2" 2-1/2" 3" 4"

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7. Air Intake Inlet and Exhaust Gas Outlet Pipe Connections

DANGER

WARNING

CAUTION

WARNING

3. Determine the straight line distance and the number of elbows required to route the air intake inlet and exhaust gas outlet pipes to their termination point.

Improper venting of the water heater will result in excessive levels of carbon monoxide, which can lead to severe personal injury or death. This water heater must be vented in accordance with the “Venting of Equipment” section of the latest edition of the ANSI Z223.1 / NFPA 54 (Natural Fuel Gas Code) in the USA, or in Canada refer to the “Venting Systems and Air Supply for Appliances” section in the latest version of CAN/CGA B149.1 (Natural Gas and Propane Installation Code), and all applicable local building codes. Vent installation should be performed only by a licensed professional.

“7.6 Intake Air Inlet and Exhaust Gas Outlet Pipe Diameter and Length” on page 24.

4. Determine the diameter of pipe required to properly bring in intake air and vent exhaust gas. “7.6 Intake Air Inlet and Exhaust Gas Outlet Pipe Diameter and Length” on page 24.

5. Verify the location of the air intake inlet and exhaust gas outlet terminations are within state and local codes. “7.7 Venting Clearance Specifications” on page 25.

6. Select an approved material for the air intake inlet piping. “7.8 Exhaust Gas Outlet Pipe Materials” on page 26.

7. Select an approved material for the exhaust gas outlet piping. “7.9 Air Intake Inlet Pipe Vent Materials” on page

26.

BREATHING HAZARD

CARBON MONOXIDE GAS

Do not operate flood damaged water heaters.

•

Install venting system according to the

• required codes and material manufacturers specifications.

Do not obstruct fresh air intakes or exhaust

• outlets. Adequately support all vent system piping.

Do not place vapor emitting products near

• water heater or air intake.

•

Place working carbon monoxide detectors outside each sleeping area.

Do not operate the water heater before

• properly installing the exhaust outlet.

•

Visually inspect the vent system and eliminate any possible area where condensation could create a blockage of intake or exhaust air.

Breathing concentrated levels of carbon monoxide, even for a short period of time, will cause brain damage and can even lead to death.

7.2 Typical Single Unit Air Intake Inlet and Exhaust Gas Outlet Pipe Installation

1. Select one of the two venting configurations: two pipes

(direct vent) configuration or with one pipe (power vent) configuration.

2. Select the desired termination location and make sure

each pipe terminates within all local and state codes.

3. Select the desired material for the air intake inlet and

exhaust gas outlet pipes.

This water heater has a factory preset control to limit the exhaust gas temperature to 149°F (65°C) when the PVC is selected in the “Flue Type” programming section. As a result, the water heater can be vented with Schedule 40 PVC. If the incoming (or recirculation return) water temperature does not exceed 150°F (66°C), the exhaust gas temperature will not exceed 149°F (65°C).

Note: This water heater falls into the Category IV appliance.

7.1 Quick Reference Installation Guide

1. Select the desired type of venting system: Two Pipe Vent System (Direct) or Single Pipe Vent System (Power).

“7.3 Two Pipe Vent System (Direct Vent)” on page 20.

“7.4 Single Pipe Venting System (Power Vent)” on page

22.

2. Select the desired termination of the air intake inlet and exhaust gas outlet pipe; outside wall or roof.

“7.3.3 Side Wall Air Intake Inlet and Exhaust Gas Outlet Pipe Termination” on page 21.

“7.3.4 Roof Air Intake Inlet and Exhaust Gas Outlet Pipe Termination” on page 22.

When the unit is set for CPVC (polypropylene pipe), flue temperatures can reach 190°F (88°C). PVC pipe will melt at temperatures above 149°F (65°C) and could therefore result in a fire. Make sure the setting and the type of material being used for the flue are compatible.

For this application use Schedule 80 CPVC or Approved Polypropylene in the USA or Type BH Special Gas Vent Class IIB (CPCV) or Class IC (Polypropylene) that conforms to ULC-S636 in Canada.

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SAFETY INSTRUCTIONS

7.3 Two Pipe Vent System (Direct Vent)

On multiple unit installations, the air intake inlet and exhaust gas outlet piping from each water heater must be connected into the properly-sized common piping. Use the table in “7.6 Intake Air Inlet and Exhaust Gas Outlet Pipe Diameter and Length” on page 24 to determine the diameter of the common connecting piping between each individual water heater.

4. Determine the length and corresponding diameter for the air inlet pipe and route the pipe to the desired termination location.

a. For termination of the pipe to the outside, continue

installing the required pipe to a suitable outside location. Glue all connections, making sure the joints are sealed airtight.

b. Install suitable pipe support hangers every 4 to 5 feet,

or as local building codes require.

IH-39

7.3.1 Single Unit Configurations

The water heater can be directly vented without any modification using a 4 inch diameter pipe.

The following diagrams represent some typical direct venting configurations and are included to assist in designing the vent system. Possible configurations are not limited to the following diagrams.

Exhaust

Intake

Air

Exhaust

c. To configure the unit for power vent, insert a 3’

section of 3” pipe.

5. Determine the length and corresponding diameter for the exhaust gas outlet pipe and route it to a suitable outside location.

a. Glue all connections, making sure the joints are sealed

airtight.

b. Install all horizontal exhaust gas outlet piping with a

minimum 2 degree (1/4” per foot) slope back toward the water heater. This allows any condensate that accumulates in the exhaust gas outlet pipe to properly drain back into the unit.

c. Install suitable pipe support hangers every 4 to 5 feet,

or as local building codes require.

Do not connect any other appliance vents to the water heater inlet or outlet pipes.

6. If multiple units are installed, make sure the diameter of the connecting exhaust gas outlet pipe is properly sized for the number of units being installed.

Intake

Air

Exhaust

Intake

Air

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7.3.2 Multiple Units Configurations

18” - 36” or over 72”

When more than one unit is installed, refer to “7.6 Intake Air Inlet and Exhaust Gas Outlet Pipe Diameter and Length” on page 24.

Connecting multiple units together requires proper sizing of the air intake inlet and exhaust gas outlet pipes. Up to four water heaters can be connected (cascaded) together. Units which share a common vent must be connected together in a cascading configuration, as described in “13. Connecting Multiple Units” on page 48.

The following diagrams represent some typical direct venting configurations and are included to assist in designing the vent system. Possible configurations are not limited to the following diagrams.

Exhaust

7.3.3 Side Wall Air Intake Inlet and Exhaust Gas Outlet Pipe Termination

1. Terminate the air intake inlet pipe with a 90° elbow

(angled down). Use a flange and PVC screen (not supplied).

2. Terminate the exhaust gas outlet pipe on the exterior wall

at least 12” above ground and at least 18” away from the air intake inlet pipe, or as required by local building codes. In areas of high snow fall, protect the vent terminations from blockage. Use a flange and PVC guard.

Exhaust

Intake Air

Intake

Air

Exhaust

Intake

Air

Exhaust

IQ-020

Single unit.

See

Note A

Exhaust

Intake Air

IQ-020a

Multiple units.

Note A: The distance between any exhaust gas outlet and

air intake inlet pipe should be between 18 and 36 inches apart. If this minimum specification cannot be met, the air intake inlet and exhaust gas outlet pipes should be 72 inches apart or more.

3. To avoid moisture and frost build-up to openings on

adjacent homes, use 45° elbows, 90° elbows, or tees for the vent termination to direct the exhaust gas fumes away from the building.

Intake

Air

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7.3.4 Roof Air Intake Inlet and Exhaust Gas Outlet Pipe Termination

Venting the unit through the roof is also an option. With this installation method, the terminations must extend at least 12” over maximum potential snow levels, or as required by local building codes. In areas of high snow fall, protect the vent terminations from blockage.

Terminate the air intake inlet pipe with a 90° elbow (angled down). A suitable roof flashing and vent cap (not supplied) should be installed.

7.4 Single Pipe Venting System (Power Vent)

7.4.1 Single Unit

The following illustrations represent some typical power venting configurations and are included to assist in designing the vent system. Possible configurations are not limited to these designs.

Single unit.

Exhaust

12” USA or 18” Canada over maximum snow level or as required by local code

3’ Minimum

Exhaust

See

Note A

12” Minimum

12” USA or 18” Canada over maximum snow level or as required by local code

Intake Air

Intake

Air

Exhaust

Intake

Air

Exhaust

Intake

Air

Intake

Air

Intake Air

Multiple units.

Note A: The distance between any exhaust gas outlet and

air intake inlet pipe should be between 18 and 36 inches apart. If this minimum specification cannot be met, the air intake inlet and exhaust gas outlet pipes should be 72 inches apart or more.

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Intake

Air

Exhaust

Intake

Air

Intake

Air

7.4.2 Multiple Units

When installing multiple units, refer to “7.6 Intake Air Inlet and Exhaust Gas Outlet Pipe Diameter and Length” on page

24.

Connecting multiple units together requires proper sizing of the air intake inlet and exhaust gas outlet pipes. Up to four water heaters can be connected (cascading) together. Units which share a common vent must be connected together in a cascading configuration, as described in “13. Connecting Multiple Units” on page 48

Exhaust

Intake

Air

Intake

Air

Intake

Air

Intake

Air

Exhaust

Intake

Air

Decommisioined

Air Intake and Gas Exhaust

Intake

Air

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7.5 Combustion Air Requirements

SAFETY INSTRUCTIONS

When using the single exhaust gas outlet pipe or power vent method, the following table outlines the required opening sizes for the combustion and ventilation air coming into the room and the required CFM requirements per water heater:

Required Combustion & Ventilation Air Opening Sizes (sq. in) Per Heater Per Boiler Room:

Model Input Air Type

iN401 399,999

iN501 499,999

*Where two openings are used, one must be within 12 inches of the floor and the other opening must be within 12 inches of the ceiling of the mechanical room.

**Where one opening is required, it must be located within 12 inches of the ceiling.

CombustionAir 72 100

VentilationAir 72 100 200 400

CombustionAir 90 125

VentilationAir 90 125 250 500

Required

CFM

openings*, direct

Do not operate the unit in an area that will draw in outside air contaminated with high levels of dust, sawdust, aerosols such as paint, or other airborne contaminants.

If necessary, purchase and install appropriate air screens and follow a regular cleaning program to ensure an adequate supply of clean, outside combustion air.

Air is drawn directly from outside into the

mechanical room

through two

or vertical

through one

opening**

125

through two

horizontal ducts

200 400

250 500

Air is drawn

from another

interior space

inside the

building

7.6 Intake Air Inlet and Exhaust Gas Outlet Pipe Diameter and Length

The iN401 and iN501 come factory installed with 4 inch polypropylene (PP) venting. The following chart outlines the maximum length of venting allowable for each model.

A vent system’s length is calculated by adding the length of all straight runs used (both horizontal and vertical) and then adding the equivalent lengths of each turn (90° or 45° elbow) used in the system.

A vent system’s length must not exceed the maximum length outlined in the chart below.

Maximum Pipe Length in Feet

Number of Units

PV = Power Vent DV = Direct Vent

Note:

Venting

Type

1 pipe - PV 250 180 250 250 250 250

2 pipe - DV 125 90 125 125 125 125

1 pipe - PV 82 50 250 250 250 250

2 pipe - DV 41 25 125 125 125 125

1 pipe - PV 40 250 176 250 250

2 pipe - DV 20 125 88 125 125

1 pipe - PV 250 250

2 pipe - DV 125 125

4” Diameter 6” Diameter 8” Diameter

iN401 iN501 iN401 iN501 iN401 iN501

Reduce the maximum equivalent length above by 5 feet per 90° elbow used and by 2 feet per 45° elbow used. Do not exceed the

above set limits.

Diameter, Model, and Length in Feet

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7.7 Venting Clearance Specifications

IQ-010

Fixed

Closed

Fixed

Closed

Operable

Gas Meter/Regulator

Operable

Inside Corner Detail

Air Inside Inlet

Vent Terminal

Area Where Terminal is Not Permitted

Venting Clearance Specifications

Clearance Distance

Item Description

A Clearances above grade, veranda, porch, deck, or balcony 1 foot 1 foot

B Clearances to window or door that may be opened 1 foot** 3 feet

C Clearances to permanently closed window * *

D Vertical clearance to a ventilated soffit, eves, or overhang * *

E Clearances to unventilated soffit, eves, or overhang * *

F Clearances to outside corner * *

G Clearances to inside corner * *

H Clearances to each side of centerline extended from meter/regulator * 3 feet within a height

I Clearances to gas meter regulator vent outlet * 3 feet

J Clearances to non-mechanical air supply inlet or combustion air inlet to any other appliance 1 foot** 3 feet

Clearances to mechanical air supply inlet 3 feet above if within

10 feet horizontally

L Clearances to above paved sidewalk or paved driveway on public property * 7 feet

M Clearances under veranda, porch, deck, or balcony * 1 foot

*Per local/gas supplier codes. Use clearances in accordance with local building codes and local gas supplier. ** For single vent pipe/direct 4 feet (1.2 m) below or to the side of opening and 1 foot above opening.

In accordance with Z223.1

InaccordancewithCSAB149.1

Note: The vent for this appliance shall not terminate: Over public walkways; or

25 iN401 - iN501 AirIntakeInletandExhaustGasOutletPipeConnections

Near soffit vents or crawl space vents or other areas where condensate or vapor could create a nuisance or hazard or cause property damage; or Where condensate vapor could cause damage or could be detrimental to the operation of regulators, relief valves, or other equipment.

USA

Canada

15 feet above meter/

regulator assembly

6 feet

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7.8 Exhaust Gas Outlet Pipe Materials

SAFETY INSTRUCTIONS

For Canadian installations, plastic exhaust gas outlet piping must comply with CAN/CGA B149.1 and be certified to the Standard For Type BH Gas Venting Systems, ULC-S636. Components of this listed system must not be interchanged with other vent systems or unlisted pipes or fittings. All plastic components and specified primers and glues must be from a single system manufacturer and must not be intermixed with another system manufacturer’s products.

All units come factory installed with 4 inch polypropylene (PP) venting. A polypropylene to PVC adapter is included with each unit to enable the use of PVC exhaust gas outlet pipe. The maximum allowable venting distances are the same regardless of vent material selected.

The materials listed in the tables below outline the acceptable exhaust gas outlet pipe materials:

United States Exhaust Gas Outlet Pipe Standards

Material Description*

Exhaust

Gas

Outlet

Pipe

PVCSchedule40(ASTMD1785)

CPVCSchedule40,80

ApprovedPolypropylene

AL29-4CStainlessSteel

If the inlet/return water temperature will exceed 150°F (66°C), do not use PVC pipe. Follow the display prompts to set the maximum water temperature for the exhaust gas outlet pipe material being used.

Canadian Exhaust Gas Outlet Pipe Standards

Material Description (approved to ULC-S636)**

TypeBHSpecialGasVentClassIIA(PVC)

Exhaust

Gas

Outlet

Pipe

*Note: Use of cellular core PVC (ASTM F891), cellular core CPVC, or Radel (polyphenylsulfone) in nonmetallic venting systems is prohibited. Covering non-metallic vent pipe and fittings with thermal insulation is prohibited.

**Note: The components (pipe, fittings, primers, and glues) must be from a single manufacturer; do not interchange. Follow the vent manufacturer’s certified instructions.

TypeBHSpecialGasVentClassIIB(CPVC)

TypeBHSpecialGasVentClassIIC(Polypropylene)

TypeBHSpecialGasVentClassI(AL29-4CStainless

Steel)

Do not use cellular foam core pipe to vent exhaust gases.

This water heater has a built-in exhaust gas outlet temperature control that limits the exhaust gas temperature to a maximum of 149°F (65°C) for PVC pipe. In commercial applications which require higher water temperatures, exhaust gas temperature can reach 190°F (88°C) and require materials such as polypropylene (PP), stainless steel (SS), or CPVC.

If the temperature approaches the upper limit, the burner will turn off automatically to protect the vent pipe. Once the exhaust gas temperature has dropped to a normal operating level, the unit will automatically restart.

7.9 Air Intake Inlet Pipe Vent Materials

The air intake inlet pipe can be of any plastic or metal vent material available. ABS, PVC, polypropylene, galvanized steel, and/or flexible corrugated ducting are all examples. When using a corrugated material, ensure there is no inadvertent crimping or blockage to the air intake inlet pipe.

Refer to the table below for a list of approved materials.

United States Vent Pipe Standards

Material Description

PVCSchedule40

Vent Pipe

Material Description

Vent Pipe

Note: In addition to these charts, it is recommended to consult the most recent edition of ANSI Z223.1/NFPA 54 or CAN/CGA B149.1, as well as all applicable local codes and regulations when selecting vent pipe materials.

CPVCSchedule80

ApprovedPolypropylene

Canadian Vent Pipe Standards

TypeBHSpecialGasVentClassIIA(PVC)

TypeBHSpecialGasVentClassIIB(CPVC)

TypeBHSpecialGasVentClassIIC(Polypropylene)

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7.10 Recommended Exhaust Gas Outlet Pipe

Transitions

45°

Do not direct exhaust gas from opposite directions. Use a 45 degree transition, as shown.

3X DIA. MIN

1/4” Rise Per

Foot Run

Condensate

1/4” Rise Per

Foot Run

Drain

Condensate

Drain

Do not transition into a reducer or use a t-fitting. Transitions should always be directed into a straight run of pipe.

Do not use 90 degree transition into a reducer or a straight pipe.

Do not use reducers in a straight run of pipe.

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8. Water Connections

NOTICE

CAUTION

WARNING

NOTICE

Note: For flow rate changes faster than 10 gpm in one

second, a water hammer arrester must be installed to prevent damage to the water heater.

8.1 Quick Reference Installation Instructions

1. Install the hot water pipe and the pressure relief valve

(furnished with the water heater) as per “8.2 Hot Water Connection” on page 28.

When tightening any fittings to the connections on the water heater, care should be exercised not to overtighten these joints and damage the unit.

2. Install the cold water pipe as per “8.3 Cold Water

Connection” on page 29.

3. Install a condensate drain line as per “8.4 Condensate

Drain Line” on page 29.

4. After installation has been completed, fill and test the

water heater for proper flow and inspect for leaks.

5. Run the hot water for a few minutes and then clean the

inlet water strainer located on the cold water inlet fitting. This strainer must be cleaned periodically to maintain proper water flow.

8.2 Hot Water Connection

Install and connect the hot water lines. Keep the hot water pipes as short as possible to deliver hot water to the fixtures quickly. If an optional hot water storage tank is required, connect the hot water lines to this tank also.

Since each installation is different, it is up to the installer to route the water lines using the most efficient routing. The drawings shown here are only suggestions indicating the items needed for the installation.

To prevent serious personal injury, do not install any shut-off device between the water heater and the pressure relief valve. This valve is designed to release abnormally high pressure within the water heater in the event of a system problem.

The pressure relief valve must be rated at 150 psi, the maximum btu/h output of the unit, and comply with all local building codes and standards. Do not install any restrictions or other valves prior to the pressure relief valve.

To prevent adverse health issues, only materials (pipes, fittings, valves, solder, etc.) that are approved for use in potable water systems should be used.

1. Connect a 1-1/2” NPT coupler to the water heater’s hot

water connection.

2. Install a 1-1/2” union connection.

3. Install the supplied 3/4” 150 psi maximum pressure relief valve, into the port on the top of the unit.

4. Following local building codes, install a 1-1/2” manual

shut-off valve with 1-1/2” NPT fittings.

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5. Install and route a discharge pipe from pressure relief valve to within six inches of the floor and directed away from walkways or other appliances.

a. Route the relief valve to within six inches of the floor

to prevent injury in the event of a discharge.

b. The diameter of the pipe from the relief valve must be

equal to the outlet size of the relief valve.

c. Do not use reducers in the outlet pipe.

d. Do not install any valves, restrictions, elbows, or other

blockages in the outlet pipe.

e. For multiple unit installations, the outlet piping must

not be connected together. Each pipe must be separately routed to a suitable drain.

6. Connect the unit to the building’s hot water pipes. If multiple water heaters are being installed, the diameter of both the main cold water pipes and the main hot water pipes need to be sized by an engineering professional.

7. To conserve energy, insulate all hot water pipes and recirculation pipes.

SAFETY INSTRUCTIONS

Do not insulate the pressure relief valve.

CAUTION

8. With the unit OFF, open a nearby hot water faucet and allow the water to flow through the unit until all the trapped air is exhausted from the water pipes and from the water heater.

9. Leak test the water piping. Repair any leaks immediately.

8.3 Cold Water Connection

Install and connect the cold water pipes.

Note 1: If the incoming water is known to have a high

mineral content or “hardness” (see “17. Warranty” on page 61), treatment is recommended upstream from the water heater.

When the water heater is installed in a closed loop recirculation system, and if the cold water supply pipe has a back flow preventer, then an expansion tank should be installed to allow for water expansion as per the diagrams in “3.7 Configuration Options” on page 9.

To prevent adverse health issues, only materials (pipes, fittings, valves, solder, etc.) that are approved for use in potable water systems should be used.

Note: Isolation valve kits can be used if incoming water treatment is anticipated (such as a water softener) due to hardness levels or heavy usage of the unit.

6. With the unit OFF, open a nearby cold water faucet and allow the water to flow through the unit until all the trapped air is exhausted from the water pipes and from the water heater.

7. Leak test the water pipes. Repair any leaks immediately.

8.4 Condensate Drain Line

Due to its efficient design, the water heater produces condensate (water) as a normal by-product of heating the water.

This condensate is acidic, with a pH level between 3 and 4. Local building codes may require an in-line neutralizer, such as the iB3001, to be installed (not included) to treat this water. The maximum condensate flow rate is 3.6 GPH.

1. Install a 3/4” flexible hose to the hose connection on the water heater.

a. If a floor drain is used to remove the discharge, route

the drain hose over or into the drain.

Note: Ensure that the flex tube is not pinched or kinked.

The tube should freely drain. The tube termination should not be immersed in water.

1. Connect a 1-1/2” NPT coupler to the water heater’s cold water connection.

2. Install a 1-1/2” union connection.

Shut-off Valve

Union

3. Following local building codes, install a 1-1/2” manual shut-off valve with 1-1/2” NPT fittings.

4. Connect the unit to the existing cold water pipes.

5. Connect the unit to the building’s cold water pipes. If multiple water heaters are being installed, the diameter of the main cold water pipe needs to be sized by an engineering professional.

2. Follow applicable local codes and if required, install in-line neutralizer (iB3001 )to treat the acidic condensate. Follow all the installation instructions included with the neutralizer.

Note: Whenever a condensate neutralizer is required, it is suggested that a iB3001 telliBot Condensate Neutralizer be used. When used in a cascading application, use one telliBot unit per water heater.

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8.4.1 Installing iB3001 to Condensate Drain Line

1. Install the unit so the inlet and outlet connections are below the level of the condensate drain coming from the gas-fired appliance.

a. A one inch minimum distance is required.

b. In the case of a floor mounted gas-fired appliance a

riser may be required to raise the gas-fired appliance to obtain the minimum requirement.

2. Place the unit only in a horizontal position on the floor. Vertical mounting is not permitted and will void the warranty.

3. Any condensate drain connection must have a p-trap between the gas-fired appliance outlet and the unit’s inlet.

4. Locate the unit where pipes are not subjected to freezing temperatures.

5. Locate the unit close to a floor drain or use a condensate pump.

6. Ensure that all connections are watertight.

7. Follow all local codes for handling exhaust gas condensate.

8. Locate the unit near an electrical outlet.

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9. Electrical Power

WARNING

80 (120) Amp

NOTICE

WARNING

9.1 Electrical Recommendations

To avoid serious injury or even death, follow all applicable local, state, and national regulations, mandates, and building codes for guidelines to install the electrical power supply.

Electrical code requirements are different in the USA and Canada. Refer to and follow the local building codes, the latest edition of the National Electrical Code (NFPA 70) in the USA, or the CGA C22.1 Canadian Electrical Code - Part 1.

For a single in401 or iN501 water heater, the circuit breaker(s) should be at least 15 amps per circuit

For multiple units install an adequately sized circuit breaker. Installing a separate circuit breaker for each unit is recommended to isolate units during service or repair.

Four Units

20 (30) Amp

Single Unit

To avoid serious injury or even death from electrical hazards, an additional ON/OFF electrical junction box should be installed near the water heater. This switch will allow power to be removed from the water heater prior to service or in the case of an emergency.

3. Route a customer-supplied appropriately-sized, wire with ground from an electrical junction box with an ON/OFF switch through the back panel of the water heater. Route the wire through the cabinet to the junction box.

4. On the opposite side of the block from the factory installed wiring, connect the white wire to the white terminal, the black wire to the black terminal, and the green ground wire to the green terminal (for each circuit).

Note: For an electrical wiring schematic, refer to “15.2 Complete Wiring Diagram (all models)” on page 53 for additional information.

The electrical connections for the water heaters are polarity sensitive. Before connecting the water heater to the power source, test the polarity of the electrical circuit.

9.2 Connection Instructions

1. On single unit installations, make sure the electrical outlet being used is wired with at least 12 gauge wire and grounded with an appropriately sized circuit breaker. The electrical power required for the water heater is 120V AC at 60 Hz.

2. Remove the two cover screws and open the cover.

5. If multiple units are being installed, refer to “13. Connecting Multiple Units” on page 48 for additional information.

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10. Adjusting CO2 Level

DANGER

NOTICE

10.1 General Information

This procedure is required:

1) only during installation in a high-altitude location over 8,000 feet, or

2) when converting the unit from natural gas to propane.

This procedure should be performed only by a qualified technician.

A concentration of carbon monoxide (CO) as small as

0.04% (400 parts per million) in the air can be fatal. When

making High Fire and/or Low Fire adjustments, CO levels must be monitored using a flue gas analyzer and must not exceed 400 ppm of CO at any time during the operation.

Adjusting the “Low Fire screw” or the “High Fire screw” even in small increments can result in a significant increase in CO concentration. To avoid serious injury or death, DO NOT make any adjustments to the gas valve without monitoring the exhaust gases with a functional and calibrated flue gas analyzer.

CO2 and CO Standards

Description CO2 Range (%) Max. CO Level (ppm)

Natural Gas

High Fire 9.1% to 9.3% < 200 ppm

Low Fire 9.1% to 9.3% < 60 ppm

Propane

High Fire 10.1% to 10.5% < 200 ppm

Low Fire 10.1% to 10.5% < 60 ppm

10.2 Adjustment Procedure

1. Open or remove the front doors.

2. Locate the gas valve on each heat engine. There are two heat engines.

3. Remove the plug from the test port on the exhaust manifold. Insert a calibrated flue gas analyzer into the test port.

4. Follow the display screens.

The values listed in the table are for nominal conditions. Variables such as gas pressure, heating value of the gas, humidity, and temperature of combustion air can impact CO and CO2 values. Changes in these variables can result in different CO and CO2 values on the same water heater.

A qualified service technician must use a calibrated flue gas analyzer to adjust the gas valve to achieve the desired CO2 and CO values.

Before any adjustments are made, the service technician must confirm the static gas pressure meets these minimum requirements. Natural Gas - 8” W.C. Propane - 11” W.C.

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NOTICE

Do NOT change the blower speed settings. This adjustment MUST be performed by factory personnel ONLY. Changing this setting WILL VOID the warranty!

9. If the CO2 values are within appropriate range, proceed to Step 10, otherwise continue.

a. Use a flat blade screwdriver to turn the High Fire

screw clockwise to decrease and counterclockwise to increase the CO2 value.

b. Adjust in ¼ turn increments.

c. Wait three minutes to stabilize flue gas readings and

recheck values.

d. Adjust until values fall with specified range.

5. Create a hot water flow of at least 6.0 GPM as shown on the display screen.

Note: If flow rate is inadequate, a pop-up message will notify

to increase the flow.

High Fire Screw

10. Once the desired values are achieved, record the new High Fire CO2 “adjusted values” in the table.

CO2 and CO Standards

Description CO2 Range Max. CO Level

Natural Gas High Fire 9.1% to 9.3% < 200 ppm

Propane High Fire 10.1% to 10.5% < 200 ppm

High Fire Recorded Values

Date ____ / ____ / _______

Heat Engine

(TOP)

CO2 Value %

Max CO ppm

Heat Engine

(BOTTOM)

CO2 Value %

Max CO ppm

Initial Output Adjusted Value

6. At at a flow rate of 6.0 GPM, Top Heat Engine will start.

7. Allow three minutes of operation at High Fire.

8. Record “initial output” in Hire Fire Recorded Values table.

11. From the display screen, press Bottom Heat Engine and repeat the High Fire procedure for all heat engines.

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12. Press LOW FIRE on the display screen.

13. Record “initial output” in Low Fire Recorded Values table.

CO2 and CO Standards

Description CO2 Range Max. CO Level

Natural Gas Low Fire 9.1% to 9.3% < 60 ppm

Propane Low Fire 10.1% to 10.5% < 60 ppm

Low Fire Recorded Values

Date ____ / ____ / _______

Heat Engine

(TOP)

Value %

Max CO ppm

Heat Engine

(BOTTOM)

CO2 Value %

Max CO ppm

Initial Output Adjusted Value

17. When all heat engines have been properly adjusted, turn off water flow.

18. Remove the flue gas analyzer probe and plug the test port.

19. Press the back button to return to the main screen.

20. Check for gas leaks using a leak detector.

21. Install side panel covers. If converting to propane, proceed to section “11. Natural Gas to Propane Conversion” on page 35.

14. Adjust the Low Fire screw while the burner operates at low fire using a 2mm hex wrench. Turn clockwise to increase CO2 and counterclockwise to decrease CO2.

Low Fire Screw

15. Once the desired values are achieved, record the new

Low Fire CO2 “adjusted values” in the table.

16. From the display screen, press Bottom Heat Engine and repeat the Low Fire procedure for all heat engines.

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11. Natural Gas to Propane Conversion

SAFETY INSTRUCTIONS

A qualified service technician MUST make the required changes to convert the water heater from Natural Gas to Propane.

11.1 General Information

Note:ThisconversionprocessalsorequirestheCO2 levels to be adjusted. Refer to “11. Natural Gas to Propane Conversion” on page 35 for instructions.

Before converting the unit for propane, verify the current gas inlet pressure meets the recommended pressure and record it in the space below.

Propane Static Gas Pressure

Parameters Specifications

Minimum Static Gas Pressure 8”W.C.(non-corrugated,black

iron)

RecommendedGasPressure 11”W.C.

Maximum Static Gas Pressure 13”W.C.

CurrentStaticPropaneGasPressure___________W.C.

Date___________________

Note:ThisconversionprocessalsorequirestheCO2 levels to be adjusted. Refer to “10. Adjusting CO2 Level” on page 32 for instructions.

b. Place the circuit breaker for the water heater at the

main electrical panel in the OFF position. Verify there is no power to the unit(s).

c. Open the front door and locate the main circuit board.

Note: There are two control boards in the iN401/iN501.

d. Locate DIP Switch 1 on each of the two circuit boards.

11.2 Conversion Procedure

1. Follow these steps before repositioning the DIP switches.

a. Turn the water heater OFF using the display screen.

e. Move each DIP switch downward into the Propane

position.

DIP Switch Settings

ON ON

SW1 Propane

(Réglages des commutateurs DIP)

Natural Gas

(Gaz naturel)

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f. Reset the circuit breaker to the ON position. Turn the

water heater ON using the display screen.

2. Follow the display screens to check if the unit is now set

to propane.

3. Refer to section “10. Adjusting CO2 Level” on page 32 in this manual for instructions to adjust CO

levels.

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12. Operation

WARNING

12.1 Control Panel

Main Menu Screen

12.2 Turning Water Heater ON and OFF

1. When power is applied to the water heater or the electrical switch is turned ON, the Main Menu screen will automatically appear.

2. To turn the water heater OFF, press and hold the Power button in the upper left of the screen.

Selecting the Menu button brings up this screen.

A sleep mode screen will appear after a period of inactivity.

3. Press the Power button to turn the unit ON.

Turning the unit OFF does not disconnect it from the power source. Whenever working around electrical components within the water heater, turn off the power at its source. Touching live electrical components can cause serious injury or death.

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12.3 Setting the Time

DANGER

12.4 Adjusting the Water Temperature

Note: The outlet water temperature is factory preset to

120°F, however these commercial water heaters are capable of heating water to 190°F.

Hot water temperature over 125°F (52°C) can cause severe burns instantly or death from scalding. Children, the disabled, and the elderly are at the highest risk of being scalded. Do not leave children or the infirm unsupervised. Check temperature

of hot water before taking a shower or bath. To control water temperature to a particular faucet, temperature limiting valves can be installed by your service professional.

All water faucets must be closed before changing the temperature setting. The unit must not be operating.

1. Firmly press the (+) and (–) to increase or decrease

the temperature by 5°F. Firmly hold the icon until the display reaches the desired temperature.

Press the Up/Down arrows to make adjustments. Press the Back button to return to the main screen.

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2. For finer temperature adjustments, tap the (+) and (–) icons to change the temperature by 1°F.

3. Follow any prompts shown on the screen.

12.5 Security

12.5.1 Setting Passcode Protection

It is not necessary to set a passcode for the water heater to function properly. This feature is available to help prevent unauthorized access to the unit.

If a passcode is set, it must be entered prior to accessing the main screen.

Press ON/OFF and follow the prompts.

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12.5.2 Changing Passcode

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12.5.3 Forgot Passcode

If the unit passcode is lost or forgotten, press the “?” icon and call technical support.

12.7 Temp / Flow

Provides the general operating parameters of each heat engine.

12.6 NOT USED

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12.8 Life Screen

These screens provide a visual indication of the remaining life of various components.

Note: Parts can be ordered by contacting technical support.

Service recommended: Order appropriate replacement part as soon as possible. To reset life, press and hold the appropriate bar and follow the prompts.

Press the (+) button to show the details of the various heat engines.

iN401 - iN501 Operation 42 May2019-Revision00

Service Required: Take IMMEDIATE action when this screen appears because the part life is critical. To reset life, press and hold the appropriate bar and follow the prompts.

When a part is replaced, the screens will provide replacement part information and a screen to reset the service meter for the part being replaced.

12.9 Unit Information

This screen provides the model, software version, serial number, and a link to the contact us screen for the water heater.

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12.10 More Screens

12.10.1 Cellular

Intellihot Gen II water heaters are cellular capable. This feature also allows the units to be monitored and controlled from a mobile device.

12.10.2 Error History

Status of cellular connection screens.

Whenever software updates are being made the following screens will appear.

There are two error history screens. One screen provides an overview of the entire unit. Pressing the (+) icon provides more detailed error information.

iN401 - iN501 Operation 44 May2019-Revision00

12.10.3 telliCare Service (Subscribe at Startup)

telliCare is a cellular enabled, prognostics and predictive maintenance service for Gen II water heaters. This service allows water heaters to be monitored and controlled remotely via an app on a mobile device.

Subscribe to this service by downloading the telliCare app from iTunes App Store and following the prompts on the app.

Upon startup the following screens appear.

2. This screen appears as the unit is trying to find a cellular connection.

1. Tap anywhere on the screen to continue.

3. If the unit is unable to find a connection, this screen appears.

4. If the unit is able to find a connection, the following screens appear.

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5. If for some reason the setup is not completed, the following screen appears:

6. Note: Each individual unit must be registered and each unit can only be registered once.

iN401 - iN501 Operation 46 May2019-Revision00

7. Once the service is set up, various status screens provide the expiration date of the service and if it is on an auto renewal schedule.

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13. Connecting Multiple Units

WARNING

13.1 General Information

Multiple units can be connected together to supply large demands of hot water.

The water heaters communicate through a cable connection between each water heater. The benefits of connecting the units are:

• When demand for hot water is low, fewer units will operate.

• If one unit has an error code, the others will continue to

operate.

• Changing the settings (temperature, time, etc.) on one unit

changes settings on all the units.

• It allows shut down of one unit for maintenance while the

others continue to operate.

13.2 Installation Procedure

1. Connect all the units to a gas supply pipe. Make sure the pipe is properly sized in accordance with the BTU draw and number of units being operated. Refer to “6. Gas Connection” on page 14 for additional information.

2. Connect all the units to the power supply. Refer to “9. Electrical Power” on page 31 for additional information.

8. Power up all the units and assign a unique number, one through four to each unit. Set the STAGING to ON.

Main Supply Line

Manual Shut-off Valve

Drip Leg

Manual Shut-off Valve

Drip Leg

Manual Shut-off Valve

Drip Leg

Manual Shut-off Valve

Drip Leg

3. Install the combustion (fresh) air intake and exhaust outlet pipes. Refer to “7. Air Intake Inlet and Exhaust Gas Outlet Pipe Connections” on page 19 for additional information.

4. Install and connect the hot water lines. If an optional hot water storage tank is required, connect the hot water lines to this tank. Make sure the water pipe is properly sized in accordance with the number of units being operated.

5. Install and connect the cold water lines. Make sure the water line is properly sized in accordance with the number of units being operated.

6. Connect and route the condensate drain lines to a suitable discharge location. Refer to “8. Water Connections” on page 28 for additional information.

7. Do Not connect communication cables at this time.

NOTE: It is necessary to wait a minimum of 30 seconds here

Before making any adjustments or connections inside the water heater cabinet, make sure the power is disconnected. Unplug the water and/or turn the circuit breaker OFF.

9. If necessary, press the Power button to turn OFF each water heater in the system and disconnect power from all the units in the system.

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10. Open the front door and locate the main circuit boards.

iN401/iN501 have 2 Circuit Boards.

11. Connect the included communication cable from an open jack on the circuit board in one unit to an open jack in the next unit. Repeat this step as required by the number of water heaters being connected.

12. On the first water heater, locate DIP Switch 3 on circuit board 1. Position the switch in the ON position (left) as shown in the table below.

13. Position all other switches on the circuit boards in the unit to the OFF position (right).

14. On any water heater unit between the first and last unit, Unit 2 and/or Unit 3, position all DIP SW3 switches in the OFF position (right).

15. On the last water heater, locate DIP Switch 3 as shown in the table below.

16. Once the communication cables are routed and connected and the DIP switches are correctly positioned, close and lock the front door.

17. Reconnect the power and turn the water heater ON. The water heaters, should now be ready to communicate with each other and operate as a single system.

Note:

Whenever a change is made to any one water heater,

all the other units in the system will be automatically updated to the new settings.

13.2.1 telliCare for Multiple Units

If cascading multiple units, the cellular module on all units besides “Unit 1” in the sequence need to be disconnected to make room for cascade communication cables. Remove the attached cable at each end from the referenced jacks and set aside.

13.3 Venting for Multiple Units

When venting for multiple units the following screens will appear.

Cascade Termination DIP Switch 3 Setting (Single Unit)

Model Board 1 Board 2

iN401 / iN501 ON OFF

Cascade Termination DIP Switch 3 Setting (Multiple Units)

Model Board 1

iN401 / iN501

Unit1

Unit2or3 OFF

Last unit OFF

Board 2

OFF

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14. Maintenance

14.1 Maintenance-Free Circulation Pump

The circulation pump is maintenance-free and therefore does not require any servicing. The only adjustment is the speed setting, which must be set to Speed 3 (III).

14.2 Heat Engine Locations

Use the following diagrams to identify the location of the heat engines.

14.3 Condensate Sediment Cup Cleaning

One sediment cup is located inside the water heater cabinet. This cup should be removed and cleaned annually. Fill in the date serviced in the chart on the next page.

1. Twist the bottom of the sediment cup to release the locking clips.

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2. Pull down on the sediment cup and pull it away from the upper portion of the unit. The sediment cup will normally be full of condensate. Carefully, pour the condensate into a container and properly dispose of it.

Date Last Serviced

Month Day Year

3. Remove the inner sediment cup from inside the lower portion of the unit.

4. Remove any dirt and debris build-up using soap and warm water.

5. Replace the inner sediment cup and reattach the entire unit.

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15. Wiring Diagrams and Troubleshooting

15.1 Operational Flow Chart

Is Temp.

Within

Limits

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Is Temp.

Within Limits

IH-56

15.2 Complete Wiring Diagram (all models)

To External Antenna

IN401 / IN501

53 iN401 - iN501 Wiring Diagrams and Troubleshooting

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PUMP

FUSE FUSE

GN WT BK

RED LED

(BURNER ON)

GREEN LED

(POWER)

TOP CONTROL MODULE

FUSE FUSE

GN WT BK

RED LED

(BURNER ON)

GREEN LED

(POWER)

To Exterior Antenna

BOTTOM CONTROL MODULE

FUSE*

125V, 5A

* SLOW-BLOW

LOAD

POWER SWITCH

LINE

OFF

DIP SWITCH SW1

FUEL SELECT

CASCADING

CONNECTIONS

DIP SWITCH SW3

CASCADING

CONNECTIONS

OFF

COMMUNICATION CABLE

OFF

GN-GROUND

WT-NEUTRAL

BK-LINE

INTELLIHOT WATER HEATER WIRING DIAGRAM: iN401 / iN501

WIRE COLOR CODE BK BL BN

GN WT

GN/YL

BLACK

BLUE

BROWN

GREEN

WHITE

GREEN/YELLOW

iN401 - iN501 Wiring Diagrams and Troubleshooting 54 May2019-Revision00

15.3 Troubleshooting Guide

Description PossibleCause Remedy

Blower

Speed Fault • Blower noisy / impeller jammed.

• Disconnected signal wire.

• Wiring faulty.

Igniter

Ignition Failure • Water over-heat switch tripped.

• Faulty DSI, faulty igniter wire, faulty ignition connection, faulty PCB, bad igniter.

• Low gas pressure.

• Wiring faulty.

Open Sensors

Inlet / Outlet Sensors • Unplugged connectors.

• Faulty sensor wiring.

• Faulty sensor.

• Heat engine water outlet temperature sensor.

• Flue temperature sensor.

• Inlet water temperature sensor.

• Faulty controller.

• Inspect blower / impeller. Clean and remove any obstructions.

• Check PWM signal. Check for loose wires / pins, and repair.

• If the problem persists, turn control panel OFF, shut gas valve, disconnect power from unit, and contact an authorized service technician.

• Check pump, check cross-over solenoid. Electrical noise (DSI).

• Replace part.

• Adjust gas pressure at regulator, check / increase size of gas line, check for gas line blockage.

• If the problem persists, turn control panel OFF, shut gas valve, disconnect power from unit, and contact an authorized service technician.

• Check connectors and ensure they are securely connected

• Check for nicked or broken sensor wiring or connectors. Also check for corroded or wet connectors

• Measure resistance of sensor at connector (18 kΩ at 50°F, 10 kΩ at 77°F, 3 kΩ at 140°F)

• Replace controller.

Faulty Sensors

Inlet / Outlet Sensors

Heat Exchanger

Outlet temperature exceeded set limit

• Faulty sensor wiring or faulty sensor.

• Inlet water temperature sensor.

• Heat exchanger water outlet temperature sensor.

Faulty controller.

•

• Flow rate changes excessive.

• Faulty sensor wiring.

• Faulty sensor.

• Faulty controller.

• Check for nicked or broken sensor wiring or connectors. Also check for corroded or wet connectors.

• Measure resistance of sensor at connector (18 kΩ at 50°F, 10 kΩ at 77°F, 3 kΩ at 140°F)

• Replace controller

• Ensure the water flow rate does not change faster than 2 GPM every 5 seconds.

• Check for nicked or broken sensor wiring or connectors. Also check for corroded or wet connectors.

• Measure resistance of sensor at connector (18 kΩ at 50°F, 10 kΩ at 77°F, 3 kΩ at 140°F).

• Replace controller.

55 iN401 - iN501 Wiring Diagrams and Troubleshooting

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Description PossibleCause Remedy

Flue

Temperature Exceeded Set Limit • Incorrect vent set up.

• High inlet temperature.

• Faulty sensor wiring.

• Faulty sensor.

• Faulty controller.

Blocked Flue Fault

• Exhaust blocked (bird, etc).

• Backed up condensate.

• Wiring loose (switch open).

Flue sensor

• Unplugged connectors.

• Faulty sensor wiring.

• Faulty sensor.

• Flue temperature sensor.

• Inlet water temperature sensor.

• Faulty controller.

• If vent pipe material is CPVC or polypropylene, ensure that CPVC is selected in the vent material screen.

• Ensure inlet temperature is lower than 150°F if vent pipe material is PVC or lower than 190°F if vent pipe material is CPVC or polypropylene.

• Check for nicked or broken sensor wiring and connectors. Also check for corroded or wet connectors.

• Measure resistance of sensor at connector (18 kΩ at 50°F, 10 kΩ at 77°F, 3 kΩ at 140°F).

• Replace controller

• Check exhaust termination. Check exhaust connection at water heater. Install screens to prevent blockage.

• Check slope of drain. Check for double loops, air locks, or debris in loop.

• Check wiring.

• Check connectors and ensure they are securely connected

• Check for nicked or broken sensor wiring or connectors. Also check for corroded or wet connectors

• Measure resistance of sensor at connector (18 kΩ at 50°F, 10 kΩ at 77°F, 3 kΩ at 140°F)

• Replace controller.

Cascading

Alert • Loss of communication between

units.

• Check for broken or nicked communication cable or loose connector.

• Ensure that the communication cable is not bundled or tied to any high voltage lines.

• Ensure dip switch (SW3) is ON in first and last units and OFF in all other units.

• Ensure each unit numbering is unique.

iN401 - iN501 Wiring Diagrams and Troubleshooting 56 May2019-Revision00

Water Valve

Description PossibleCause Remedy

• Faulty sensor wiring.

• Check for nicked or broken sensor wiring or connectors. Also check for corroded or wet connectors.

• Water valve clogged or damaged.

• Replace water valve.

Pump

Fuel Type

• Faulty pump wiring.

• Check for nicked or broken sensor wiring or connectors. Also check for corroded or wet connectors.

• Pump fuse blown.

• Faulty pump.

• Faulty controller.

• Replace fuse (5 Amp)

• Replace pump.

• Replace controller.

• Wrong fuel type being used. •Use correct fuel type.

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Description PossibleCause Remedy

Software

Manifold Sensors

• Incorrect settings.

• Incompatible settings.

• Incorrect software version.

• Faulty wiring.

• Unplugged connectors.

• Faulty sensor wiring.

• Faulty sensor.

• Flue temperature sensor.

• Inlet water temperature sensor.

• Faulty controller.

• Review and correct settings.

• Update software version.

• Check for nicked or broken sensor wiring or connectors. Also check for corroded or wet connectors.

• Check connectors and ensure they are securely connected

• Check for nicked or broken sensor wiring or connectors. Also check for corroded or wet connectors

• Measure resistance of sensor at connector (18 kΩ at 50°F, 10 kΩ at 77°F, 3 kΩ at 140°F)

• Replace controller.

System Alert / Fault

• A system alert or fault is present (main menu screen).

• Malfunction of monitored part or system.

iN401 - iN501 Wiring Diagrams and Troubleshooting 58 May2019-Revision00

• Press the Menu bar and refer to the remedy for indicated part or system.

Alive

Description PossibleCause Remedy

• Shows status of water heater.

• Touch display screen to awake.

• Sleep mode.

System Alert / Fault

• Sleep mode passcode protected.

• Indicates a fault exists within the monitored parts or system.

• A system alert or fault is present (main menu screen).

• Malfunction of monitored part or system.

• Refer to the remedy for indicated part or system.

• Press the Menu bar and refer to the remedy for indicated part or system.

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16. Serviceable Parts

16.1. Blower & HEX Parts

August2019-Revision00

Item

1 2 3 4 5 6

Part Number

IGT-SPR0011

IGT-ELC0147

IGT-ELC0012 IGT-SPR0008 IGT-CST0011 IGT-CST0010

60iN401 - iN501 Serviceable Parts

Description

Gas Valve Kit

Gray Swirl Plate

Fan Adapter Plate

Blower Kit

Outlet Casting Adapter

Inlet Casting Adapter

16.2. Burner, Electrode & Gas Valve

Item

1 2 3 4

Part Number

IGT-SPR0111 IGT-ELC0020 IGT-SPR0011 IGT-SPR0106

61 iN401 - iN501 Serviceable Parts

Description

Gen II V02 Burner Kit

Gas Valve Harness

Gas Valve Kit

Gen II V02 Electrode Kit

August2019-Revision00

16.3. HEX & Sidecast

August2019-Revision00

Item

1 2 3 4 5

Part Number Description

IGT-SA0511 Top Heat Exchanger

IGT-SA0512 IGT-CST0029 IGT-CST0035

IGT-SLS0083

62iN401 - iN501 Serviceable Parts

Bottom Heat Exchanger

Side Cast - Exhaust, 3"

Side Cast - Exhaust, 4" to 3"

Side Cast Seal

16.4. Water (hot water side)

Item

1 2 3 4 5 6 7 8

Part Number

IGT-PLG0018

IGT-FTT0235-3

IGT-SLS0041

IGT-SM0558

IGT-FTT0235-4

IGT-LNE0063

IGT-FTT0243-1

IGT-LNE0064

63 iN401 - iN501 Serviceable Parts

Description

Water Hammer Arrestor

Water out fitting, hot side

Flange Seal

Close-off Plate

Water out fitting, T&P side

Corrugated Water line assembly

Flange Adapter fitting

Corrugated Water line assembly

August2019-Revision00

16.5. Water (cold water side)

August2019-Revision00

Item

1 2 3 4 5 6 7 8

9 10 11 12

Part Number

IGT-LNE0059 IGT-LNE0053 IGT-LNE0061

IGT-FTT0235-1

IGT-SLS0041

IGT-FTT0244

IGT-VL0019

IGT-LNE0064

IGT-FTT0235-2

IGT-SPR0003

IGT-SM0558

IGT-SPR0075

Description

Corrugated line assembly Corrugated line assembly Corrugated line assembly

Water In Fitting, Cold Side

Flange Seal

Flange Adapter Fitting

Bypass Valve

Corrugated line assembly

Water in Fitting, Strainer

Water Valve kit

Close off Plate fitting

Recirculation pump

64iN401 - iN501 Serviceable Parts

16.6 Gas Connections

Item

1 2 3 4 5

Part Number

IGT-FTT0235-5

IGT-PLG0014 IGT-PLG0015

IGT-SLS0041 IGT-SM0560

65 iN401 - iN501 Serviceable Parts

Description

Gas-in Casting Gas Corrugated tube Gas Corrugated tube

Flange Seal

Close Off Plate

August2019-Revision00

16.7. Electronics

August2019-Revision00

Item

1 2 3 4 5 6

Part Number Description

IGT-SPR0002 IGT-SPR0005

IGT-ELC0007

IGT-SPR0065

IGT-ELC0138

IGT-SPR0088

66iN401 - iN501 Serviceable Parts

Igniter Module (DSI) Kit

Control Board

Air Switch

Transformer Kit

Rocker Switch

Large Screen Display Kit

16.8. Miscellaneous

Gen II V 2 Sensors Kit (includes Manifold inlet, Manifold

outlet, Flue and Hotwater outlet sensors)

Part Number

IGT-ELC0092 IGT-ELC0232

IGT-SPR0110 IGT-SPR0109

IGT-ELC0181 IGT-ELC0278 IGT-ELC0279 IGT-ELC0280 IGT-ELC0281 IGT-ELC0284 IGT-ELC0288

Description

25 ft cascading cable 50 ft cascading cable

Gen II V 2 O-Ring kit

DSI to Electrode HV Cable

Heat Exchanger to Control board Complete Harness

Water Valve Wiring Harness Set

Inlet Sensor Wiring Harness

Outlet Sensor Wiring Harness

Bypass Valve Wiring Harness

Display Wiring Harness

67 iN401 - iN501 Serviceable Parts

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17. Requirements for State of Massachusetts

17.1 Notice Before Installation

This appliance must be installed by a licensed plumber or gas fitter in accordance with the Massachusetts Plumbing and Fuel Gas Code 248 CMR Sections 2.00 and 5.00.

IMPORTANT: In the State of Massachusetts (248 CMR 4.00 & 5.00)

For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied:

1. INSTALLATION OF CARBON MONOXIDE

DETECTORS.

At the time of installation of the side wall horizontal vented gas fueled equipment, the installing plumber or gasfitter shall observe that a hard wired carbon monoxide detector with an alarm and battery backup is installed on the floor level where the gas equipment is to be installed. In addition, the installing plumber or gasfitter shall observe that a battery operated or hard wired carbon monoxide detector with an alarm is installed on each additional level of the dwelling, building, or structure served by the side wall horizontal vented gas fueled equipment. It shall be the responsibility of the property owner to secure the services of qualified licensed professionals for the installation of hard wired carbon monoxide detectors.

a. In the event that the side wall horizontally vented gas

fueled equipment is installed in a crawl space or an attic, the hard wired carbon monoxide detector with alarm and battery back-up may be installed on the next adjacent floor level.

b. In the event that the requirements of this subdivision

cannot be met at the time of completion of installation, the owner shall have a period of thirty (30) days to comply with the above requirements; provided, however, that during said thirty (30) day period, a battery operated carbon monoxide detector with an alarm shall be installed.

2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector, as required in accordance with the above provisions, shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certified.

3. SIGNAGE.

4. INSPECTION.

A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, “GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS”.

The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5.08(2)(a)1 through 4.

iN401 - iN501 RequirementsforStateofMassachusetts 68 May2019-Revision00

18. Warranty

18.1 Warranty

General

This unit is warranted by Intellihot Inc., and covers defects in materials and workmanship, subject to the applicable time periods and terms below. The warranty effective start date begins on the date of commissioning, as shown on display.

This warranty is extended to the original purchaser and any subsequent owner at the original install location, and applies only when properly installed by a licensed contractor and operated in accordance with the instruction manuals. This warranty is limited to repairs or replacement of parts, at Intellihot’s option that are proven to be defective under normal use and connected only to potable water systems.

Warranty Period

Commercial Domestic Hot Water (DHW) Warranty: Heat Engine coil - 10 years, Other Parts - 2 years.

Heat Exchanger Coil

The warranty period for a heat exchanger coil failure, when installed in a Commercial DHW application is ten (10) years from the effective start date.

Contaminant Level

Aluminum 0.05 to 0.2 mg/l

Chloride 250 mg/l

Color 15 color units

Copper 1.0 mg/l

Corrosivity Non-corrosive

Fluoride 2.0 mg/l

FoamingAgents 0.5 mg/l

Iron 0.3 mg/l

Manganese 0.05 mg/l

Odor 3 threshold odor number

pH 6.5-8.5 mg/l

Silver 0.1 mg/l

Sulfate 250 mg/l

Total dissolved solids (TDS) 500 mg/l

Zinc 5 mg/l

Shipping Costs

If a replacement part is supplied under the terms of this warranty, Intellihot will provide ground service delivery for the part free of charge. Any expedited shipping expense will be paid by the customer.

All Other Parts and Components

The warranty period for any original parts (excluding the heat exchanger coil) against failure, is two (2) years from the date of commissioning. A replacement part will be warranted for the unexpired term of the original warranty. Defective parts submitted may not be returned. No returns will be accepted without prior authorization from Intellihot.

Definition of Potable water

Potable water is defined as drinkable water supplied from utility or well water in compliance with EPA secondary maximum contaminant levels (40 CFR part 143.3) as shown in the table.

Water Hardness Criteria

This warranty applies only when the water quality and supply meets the parameters outlined in the table below.

To use the table, locate the desired unit setpoint temperature on the left side of the table. Then locate the incoming water pressure across the top. The corresponding value in the table is the maximum allowable hardness in grains per gallon (gpg).

Maximum Allowable Hardness

(grains per gallon, gpg)

Unit Setpoint

100-120°

120-140°

140-160°

160-190°

(

Incoming Water Pressure (psi)

40 50

100

iN401 - iN501 Warranty May2019-Revision00

Not Covered by this Warranty

This warranty does not cover failures or problems due to:

• Failure to install in accordance applicable building codes,

ordinances, normal plumbing, or electrical trade practices.

• Improper installation, improper use, improper maintenance,

improperly made replacements or repairs, accidents or abuse.

• Sediment deposits, fire, flood, lightning, freezing, and acts

of God, or any causes other than defects in materials and workmanship.

This warranty will be void and have no eect if:

• The unit is modified or altered in any way.

• Appliance(s) or equipment attached to the unit that have not been approved by Intellihot Inc.

• If the unit is used exclusively as a booster heater for a commercial dishwasher, or if the water from a reverse osmosis or deionized process is run directly through the unit.

• The serial number is altered, defaced, or discarded.

How to Make a Claim

Please Call (877) 835-1705. Proof of purchase in the form of a dated sales receipt or warranty registration should be included with your claim. The product owner should submit the warranty claim directly to Intellihot at the following address:

Intellihot Inc. Attn: Warranty Claims 2900 W. Main St. Galesburg, IL 61401

All parts claimed to be defective may be requested to be returned to Intellihot for examination prior to full claim settlement. Please include the following information on your warranty claim:

• Model number and serial number of the unit.

• Date of original purchase.

• Owner’s name and address.

• A description of the problem with the part and unit.

Warranty Limitations

This warranty applies only when the unit is used in the United States or Canada. Except for the limited warranties provided above, Intellihot Inc. disclaims any and all other warranties, including but not limited to warranties of merchantability

and tness for a particular purpose; provided however, that implied warranties of merchantability and tness for

a particular purpose are not disclaimed during the 1-year

period from liable for indirect, special, incidental, consequential, or other similar damages, including lost profits, arising from or relating to the unit. This warranty gives you specific legal rights, and you may also have other rights which vary from state to

state.

the date of commissioning. Intellihot shall not be

iN401 - iN501 Warranty 70 May2019-Revision00

19. Product Warranty

19.1 Warranty

To register via the telliCare app, refer to “12.10.3 telliCare Service (Subscribe at Startup)” on page 45.

Warranty Registration Intellihot Inc. 2900 W. Main Street Galesburg, IL 61401

Or fill out the information in the form below and mail to the following address:

Make a copy or cut here to remove page.

Model: _____________________________________________________

Serial Numbers (up to 4):

______________________________________________________________

Owner Information:

Name: _______________________________________________________

Address: ______________________________________________________

City, State, Postal Code: _______________________________________

Phone Number: _______________________________________________

Dealer Information:

Sold By: _____________________________________________________

Address: ______________________________________________________

City, State, Postal Code: _______________________________________

Phone Number: _______________________________________________

iN401 - iN501 Product Warranty

May2019-Revision00

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iN401 - iN501 Product Warranty 72 May2019-Revision00

NOTES

May2019-Revision00

iN401 - iN501

NOTES

iN401 - iN501 74 May2019-Revision00

Endless water. Zero waste.

™

09-2019

Part#: IGT-MNL0047

Intellihot Inc. | www.intellihot.com | 2900 W. Main Street, Galesburg, IL 61401 | 877.835.1705 | support@intellihot.com

Intellihot iN401, iN501 Operation & Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual