Intellihot iQ1001 Operation And Installation Manual Download Page 1

To avoid product damage, personal injury, or 
even possible death, carefully read, understand, 
and follow all the instructions in the Installation 
and Operation manuals before installing this 

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.  

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 place.  The customer should retain this 
manual for future reference.

WARNING

If the information in these instructions is not followed 
exactly, a fire or explosion could result causing 
property damage, personal injury, or death.

 —  Do not store or use gasoline or other flammable 

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 
fire department.

 —  Installation and service must be performed by 

a qualified installer, service agency, or the gas 
supplier.

Operation and 
Installation 
Manual

Model:  iQ75

1

iQ100

1

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

Smart. Efficient. Endless

 —  Ne pas entreposer ni utiliser d’essence ou 

ni d’autres vapeurs ou liquides inflammables 
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 
qualifié 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.

Certified to

NSF/ANSI 372

Summary of Contents for iQ1001

Page 1: ...mmediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Installation and service must be perform...

Page 2: ......

Page 3: ...r Inlet Exhaust Outlet Con nections 31 7 Water Connections 7 1 Water Line Connection Guidelines 33 7 2 Water Quality 33 7 3 Hot Water Connection 33 7 4 Cold Water Connection 35 7 5 Condensate Line Ins...

Page 4: ...he ASME certification plates has the serial number for the unit Please provide this serial number for service or warranty R R XX XXXXX 1 3 Contact Information Call us first if you have any questions a...

Page 5: ...ll 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...

Page 6: ...wn to have high acidity and or high hardness water treatment is recommended Consult the local water authority SAFETY INSTRUCTIONS DO NOT use this appliance if any part has been under water DO NOT reve...

Page 7: ...SCAQMD ASME Performance GPM iQ751 iQ1001 Hot Water Capacity 45F Rise 31 4 41 6 Hot Water Capacity 70F Rise 20 2 26 7 Hot Water Capacity 90F Rise 15 7 20 8 Hot Water Capacity 100F Rise 14 1 18 7 Hot W...

Page 8: ...o allow for normal service of the unit 3 3 Connection Specifications Connections Description Specification2 Gas Supply Inlet Connection 1 1 4 NPT Flange Connection Water Supply Inlet Connection 2 Copp...

Page 9: ...de EN FONCTION Cascade Termination DIP Switch 3 Setting Single Unit Model Board 1 Board 2 Board 3 Board 4 Board 5 Board 6 iQ751 ON OFF ON N A N A N A iQ1001 ON OFF OFF ON N A N A Cascade Termination D...

Page 10: ...iQ751 iQ1001 Technical Data 10 3 6 Overall Dimensions iQ751 iQ1001...

Page 11: ...11 iQ751 iQ1001 Technical Data iQ751 iQ1001...

Page 12: ...SHUT OFF 1 1 4 2 2 MAIN GAS SHUT OFF System with no storage tank and without mixing valve 2 SHOWERS FOR ILLUSTRATION PURPOSES ONLY BUILDING RECIRCULATION PUMP W ISOLATION VALVE AND CHECK VALVE MIXING...

Page 13: ...LATION VALVES MAIN COLD WATER SHUT OFF RECIRCULATION LINE SHUT OFF COLD SUPPLY TO TANK TANK RECHARGE LINE COLD SUPPLY TO INTELLIHOT HOT SUPPLY TO TANK V1 N O TANKLESS DESIGN TANK RECHARGE PUMP W ISO V...

Page 14: ...t 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 Specificati...

Page 15: ...the unit as shown in the tables Parameters NG LP Minimum Static Gas Pressure 2 5 non corrugated black iron NG LP Maximum Static Gas Pressure 14 Gas Pressure for Adjustments 8 for NG 11 for LP 3 Selec...

Page 16: ...ation will vary according to the specific installation requirements 6 Install a drip leg on the gas piping Drip Leg a Drip legs are typically required at the gas supply of each heater to prevent any d...

Page 17: ...ng a gas regulator The manufacturer recommends these guidelines be followed to ensure reliable and proper operation of the water heater Local codes and the gas regulator manufacturer should also be co...

Page 18: ...ote BTU h capacities are based on specific gravity of 0 6 pressure drop of 0 5 WC Pipe Sizes and BTU h Capacity Natural Gas Use this table for static gas pressure greater than 5 Length Including fitti...

Page 19: ...t pressure at your location it may be necessary to install a gas pressure regulator to lower gas pressures to an acceptable level Please ensure that the gas pressure regulator has the same or higher m...

Page 20: ...the vent termination at a rate of 1 4 per foot 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 fumes...

Page 21: ...screens and follow a regular cleaning program to ensure an adequate supply of clean outside combustion air 6 5 Venting Configurations Water heaters may be installed with two pipes direct vent configur...

Page 22: ...Ventilation Air 188 375 750 iQ1001 1 001 000 Combustion Air 250 333 500 1000 Ventilation Air 250 500 1000 Where two openings are used one must be within 12 inches of the floor and the other opening m...

Page 23: ...lowing 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 MAKE UP AIR MA...

Page 24: ...s or greater than 72 inches 6 7 2 Roof 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 sno...

Page 25: ...the Roof 6 7 4 Concentric Venting Termination Multiple Units In order to conform to some national codes when two or more water heaters are installed they must be individually vented When two or more...

Page 26: ...ces to outside corner G Clearances to inside corner H Clearances to each side of centerline extended from meter regulator 3 feet within a height 15 feet above meter regulator assembly I Clearances to...

Page 27: ...adding the equivalent lengths of each fitting used in the system A vent system s length shall not exceed the maximum length outlined in the chart below Maximum Vent Length in ft for Various Venting D...

Page 28: ...Use a 45 degree transition as shown 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 reduce...

Page 29: ...er pipe when installing single units When more than one unit is installed refer to Vent Diameter Sizing and Lengths on page 27 The following diagrams represent some typical direct venting configuratio...

Page 30: ...vent method the following table outlines the required opening sizes for the combustion and ventilation air coming into the room When installing multiple units refer to Vent Diameter Sizing and Length...

Page 31: ...ic vent 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 syste...

Page 32: ...n control to limit the exhaust 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 o...

Page 33: ...e following table shows the maximum contaminant levels allowed based on the EPA National Secondary Drinking Water Regulations 40 CFR Part 143 3 If you suspect that your water is contaminated in any wa...

Page 34: ...hut off valve 5 Connect the unit to the building s hot water lines If multiple water heaters are being installed the diameter of both the main cold water lines and the main hot water lines need to be...

Page 35: ...s steel washers on both sides of the flange 2 Following local building codes install a manual shut off valve 3 Connect the unit to the building s cold water lines If multiple water heaters are being i...

Page 36: ...pump is being used the water heater may need to be raised off the floor to accommodate the height of the pump 2 If required install an inline neutralizer to treat the acidic condensate Follow all the...

Page 37: ...circuits 20 amp Single Unit 80 amp Four Units Use 20 Amp Breakers For Single Units Or Larger Breakers 80 Amp For Multiple Units Note For an electrical wiring schematic refer to the Wiring Diagram sect...

Page 38: ...re being installed the gauge of wire to the junction box must be increased to meet the additional electrical load Consult the electrical codes for the correct wire size 5 Connect the white wire to the...

Page 39: ...it if connected 3 Remove the front cover and locate the main circuit board 4 Locate DIP Switch 1 and change it to the PROPANE position PROPANE PROPANE PROPANE NATURAL NATURAL GAS GAS NATURAL GAS SW1 P...

Page 40: ...ds Description CO2 Range Max CO Level ppm Natural Gas High Fire 8 8 to 9 1 200 ppm Low Fire 8 6 to 8 9 60 ppm LP Gas High Fire 9 0 to 9 8 200 ppm Low Fire 8 6 to 8 9 60 ppm NOTICE The values listed in...

Page 41: ...valve high fire screw to achieve the desired CO2 values Note Turn clockwise to decrease CO2 and counterclockwise to increase CO2 Make adjustments by making 1 4 turn increments Wait three minutes for...

Page 42: ...til all the modules are set to the desired CO2 levels H1 H2 and H3 for the iQ751 H1 H2 H3 and H4 for the iQ1001 18 Press and release the Enter button to repeat or press and hold the Enter button to re...

Page 43: ...ess this button to set the hours and minutes on the clock F Mode button Press this button to access various Modes of Operation G Orange button Used to view real time flow and temperature readings H Di...

Page 44: ...ing Clear Error Codes 1 To reset the water heater and clear all error codes press and release Power button 11 5 Setting the Time 1 Press and release the Time button The minute section of the time disp...

Page 45: ...F in one degree increments For setting the temperature above 140 F press and continue to hold the Orange button while pressing the Up arrow Continue pressing the Up button until the desired temperatu...

Page 46: ...The display will scroll through flow outlet temperature flue temperature and inlet temperature of heat exchanger H1 The flame and blower status of H1 is shown on the display icons The FLO screen shows...

Page 47: ...ines and from the water heater 4 If multiple units are being installed follow the installation guidelines in the Multiple Units section of the manual 5 Turn ON the power switch at the electrical junct...

Page 48: ...n multiple times until the desired screen shows on the display rS Burner Rate Ramp Setting Ft Fuel Type CE Common Exhaust FP Flue Pipe Type Id Heat Exchanger Identifier CO Adjust CO2 Level 2 Follow th...

Page 49: ...operates These codes are used in conjunction with the Performance History Codes Error Code Description of Error Code E1 Blower Speed Fault E3 Blocked Flue Fault E7 Ignition Failure E9 Temperature Sen...

Page 50: ...en on the display The current setting will be displayed Press the Up Down arrows to select the Blower Ramp Selection from five different settings rat1 rat5 Select a ramp rate at which the harmonics di...

Page 51: ...thin 30 seconds of inactivity the display will return to the home screen If the dip switches are set incorrectly an error screen will be shown 13 2 7 Adjusting CO2 Levels Selection Refer to the Adjust...

Page 52: ...If the Enter button is not pressed within 30 seconds of inactivity the display will return to the home screen 13 2 10 Heat Exchanger Identifier The ID or identification mode is used to program an iden...

Page 53: ...ch water heater is rated at 2000 watts 20 amps When installing multiple units the electrical power supply must be sized accordingly Plug each water heater into a separate outlet Using a separate circu...

Page 54: ...as Only Three Circuit Boards F t 12 Connect a communication cable from the upper port on circuit board 3 iQ751 or 4 iQ1001 of the first water heater to the upper port of circuit board 1 of the second...

Page 55: ...ween the first and last unit Unit 2 and or Unit 3 position all DIP SW3 switches in the OFF position left 16 On the last water heater locate DIP Switch 3 on circuit board 3 or 4 depending on the model...

Page 56: ...3 SW3 OFF OFF OFF SW3 SW3 SW3 OFF OFF OFF SW3 SW3 SW3 OFF OFF ON SW3 SW3 SW3 Unit 4 Unit 3 Unit 2 Unit 1 iQ751 ON OFF OFF OFF SW3 SW3 SW3 SW3 SW3 SW3 SW3 SW3 OFF OFF OFF OFF SW3 SW3 SW3 SW3 SW3 SW3 SW...

Page 57: ...ed 3 After inspection and or cleaning replace the air filter and snugly tighten the band clamp 15 1 2 Cleaning Procedure 1 Liberally spray K N Air Filter Cleaner and Degreaser 99 0606 onto both sides...

Page 58: ...inutes Touch up any light areas on either side of the filter until there is a uniform red color at all areas 15 2 Condensate Sediment Cup Cleaning There are four iQ751 and five iQ1001 sediment cups lo...

Page 59: ...supply 15 3 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...

Page 60: ...ver solenoid Electrical noise DSI Replace part Adjust gas pressure at regulator check upsize gas line check for gas line blockage If the problem persists turn control panel OFF shut gas valve unplug u...

Page 61: ...xchanger outlet temperature exceeded set limit Flow rate changes excessive Faulty sensor wiring Faulty sensor Faulty Controller Ensure the water flow rate does not change faster than 2 GPM every 5 sec...

Page 62: ...iQ751 iQ1001 Troubleshooting Section 62 IH 56 750 Modulate Burner To Maintain Temperature De energize Ignition Post Purge...

Page 63: ...LD WATER WATER CONTROL VALVE AND FLOW SENSOR AIR SWITCH RD RD RD RD WT WT BL BN BN BN BL HIGH VOLTAGE CABLE WT GN BL BN OR BL GN BL GN BN BL F F RD BN BN RD SENSORS WT INTELLIHOT WATER HEATER CONTROL...

Page 64: ...11 7 216 5 851 5 21 5 1 32 5 86 86 21 3 6 7 6 8 6 7 1 3 3 6 7 6 21 2 2 6 1 211 7 216 5 851 5 21 5 1 32 5 86 86 21 3 6 7 6 8 6 7 1 3 3 6 7 6 21 2 2 6 1 211 7 216 21752 02 8 21752 02 8 21752 02 8 21752...

Page 65: ...65 NOTES...

Page 66: ...rts and Components The warranty period for any original parts excluding the heat exchanger coil against failure is one 1 year from the effective start date A replacement part will be warranted for the...

Page 67: ...isclaims any and all other warranties including but not limited to warranties of merchantability and fitness for a particular purpose provided however that implied warranties of merchantability and fi...

Page 68: ...roperty 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 e...

Page 69: ..._______________________ ________________________ Owner Information Name _____________________________________________ Address ___________________________________________ City State Postal Code _______...

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Page 72: ...Dealer Installer Contact Information IGT MNL0006 12 2014 Printed in the USA...

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