State Water Heaters 110C User manual

Gas Tankless Water HeaterTM
Suitable for combination potable water heating
and space-heating.
Please refer to local codes for space-heating compliance.
FEATURING
 • ENDLESSHOTWATER
 • ON-DEMANDUSAGE
 • COMPACT,SPACESAVING
 • ENERGYCONSERVATION
 • COMPUTERIZEDSAFETY
 • ELECTRONICIGNITION
 • ComplieswithSCAQMDRule
1146.2forLowNOxEmissions
of14ng/Jor20ppm
 • CONCENTRICVENT
 • EASYGASCONVERSION
 • EASY-LINKSYSTEM*
 • MULTI-UNITSYSTEM*
 *(510C model only)
Ifyouhaveanyquestions,please
callorwriteto:
500TennesseeWaltzParkway
AshlandCity,TN37015
TollFree:1-877-737-2840
On-Demand Water Heater
Installation Manual and Owner’s Guide
- 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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department.
- Installation and service must be performed
byaqualifiedinstaller,serviceagencyorthe
gassupplier.
WARNING
If the information in these
instructions is not followed
exactly,afireorexplosionmay
resultcausingpropertydamage,
personalinjuryordeath.
Models
• 110C
• 310C
• 510C
ANSIZ21.10.3・CSA4.3 510C
modelonly
R
DR

2Page
CONTENTS
Installation Manual
SPECIFICATIONS.......................................................................................................................... 4
INTRODUCTION .......................................................................................................................... 5
SAFETY GUIDELINES.................................................................................................................... 6
INSTALLATION............................................................................................................................. 7
General.....................................................................................................................................7
Clearances................................................................................................................................9
Included accessories................................................................................................................9
Optional items..........................................................................................................................9
Warning for installations........................................................................................................11
High-altitudeinstallations......................................................................................................12
Ventinginstructions...............................................................................................................13
Gas supply and gas pipe sizing...............................................................................................18
Water connections................................................................................................................20
Electrical connections............................................................................................................21
Temperature remote controller............................................................................................22
Easy-Link System....................................................................................................................24
Multi-UnitSystem..................................................................................................................26
APPLICATIONS............................................................................................................................27
INITIAL OPERATION...................................................................................................................29
Owner's Guide
OPERATING SAFETY .................................................................................................................. 31
NORMAL OPERATION ............................................................................................................... 33
General..................................................................................................................................33
Temperaturesettings.............................................................................................................34
Flow.......................................................................................................................................37
Freeze protection system.......................................................................................................37
Maintenance and service.......................................................................................................38
Unit draining and filter cleaning............................................................................................38
TROUBLESHOOTING...................................................................................................................39
General...................................................................................................................................39
Error codes............................................................................................................................41
COMPONENTS DIAGRAM..........................................................................................................44
PARTS LIST..................................................................................................................................48
OUTPUT TEMPERATURE CHART....................................................................................................50
LIMITED WARRANTY..................................................................................................................51
Contents

3Page
Installaon Manual
Installation Manual
CONGRATULATIONS
Congratulations and thank you for choosing our tankless water heater.
Before use, we recommend that you read through this safety manual
carefully. Please refer to the back of the manual for details about the
warranty. Keep this manual for future reference.
If you lose the manual, contact the manufacturer or your local
distributor or download from the manufacturer's website. When you
call, please tell us the product name and the serial number of your unit
written on the rating plate of the water heater.

4Page
Model 110C 310C 510C
Natural Gas Input
(Operating Range) BTU/h Min.: 15,000 Max.: 140,000
Min.: 15,000
Max.: 190,000
Min.: 15,000
Max.: 199,000
Gas Connection 3/4" NPT
Water Connections 3/4" NPT
Water Pressure* psi
(Mpa) 15 - 150 (0.1 - 1)
Natural gas
Inlet Pressure
" W.C.
(kPa)
Min. 5.0 (1.24)
Max. 10.5 (2.61)
Weight lbs. (kg) 51 (23)
Dimensions inch H 20.5 x W 13.7 x D 10.5
H 520 x W 350 x D 266
mm
Ignition Electric Ignition
Electric
Supply VAC / Hz 120 / 60
Consumption
Operation W / A 53 / 0.58 71 / 0.81 72 / 0.85
Standby W / A 2 / 0.06 2 / 0.06 3 / 0.07
Freeze-
Protection W / A 99 / 0.83 99 / 0.83 100 / 0.83
SPECIFICATIONS
*Maximum flow may need water pressure equal to or above 40 psi.
NOTE:
• Checktheratingplatetoensurethisproductmatchesyourspecifications.
• InaccordancewithANSIZ21.10.3,COemissiondoesnotexceed400PPMfornormalinput.
• The manufacturer reserves the right to discontinue, or change at any time, specifications or designs
without notice and without incurring obligations.
Specicaons
Installaon Manual

5Page
INTRODUCTION
• This manual provides information necessary for the installation, operation, and maintenance
of the water heater.
• The model description is listed on the rating plate which is attached to the side panel of the
water heater.
• Please read all installation instructions completely before installing this product.
• If you have any problems or questions regarding this equipment, consult the manufacturer or
its local representative.
• This appliance is an on-demand, tankless water heater. It is designed to efficiently supply
endless hot water for your needs.
• The 110C, 310C, and 510C models are only to be installed indoors with concentric venting.
• The principle behind tankless water heaters is simple:
*This diagram illustrates tankless water heater design concepts only and does not accurately represent
the water heater’s physical description.
1. A hot water fixture is turned on.
2. Water flows through the heater.
3. The water flow sensor detects the water flow.
4. The computer initiates the fan motor and gas valve to let gas flow through the heater and sends a
signal to the igniter to create an ignition spark.
5. The gas ignites and flames appear within the burner chamber.
6. Water is heated as it flows through the heat exchanger.
7. Using thermistors to measure temperatures throughout the water heater, the computer modulates
the gas and water valves to ensure proper output water temperature and hot water outflows.
8. When the fixture is turned off, the unit shuts down.
Introducon
Installaon Manual
Burners
Hotwaterxture
Exhaust vent and
combusonairintake
collar
Heat exchanger
Gas valves
Fan motor
Flow adjustment valve
Computer board
Thermistor
Cold water inlet
Hot water outlet Gas inlet
Thermistor
Burners
Flow sensor
Igniter
1
2
3
4
54
6
7
7
7
84
4