Reliance Water Heaters N85390NE, N71120NE instruction manual General, Filling, Adjustments

Page 24

OPERATION

IMPORTANT

A qualified person must perform the initial firing of the heater. At this time the user should not hesitate to ask the individual any questions which they may have in regard to the operation and maintenance of the unit.

An Operational Checklist is included at the rear of this manual. By using this checklist the user may be able to make minor operational adjustments and avoid unnecessary service calls. However, the user should not attempt repairs which are not listed under the USER column.

GENERAL

NEVER OPERATE THE HEATER WITHOUT FIRST BEING CERTAIN

IT IS FILLED WITH WATER AND A TEMPERATURE AND PRESSURE RELIEF VALVE IS INSTALLED IN THE RELIEF VALVE OPENING OF THE HEATER.

SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL TO SHUT OFF, TURN OFF THE MANUAL GAS CONTROL VALVE TO THE APPLIANCE.

Before proceeding with the operation of the unit make sure the water heater and system are filled with water and all air is expelled.

FILLING

1.Close the heater drain valve by turning handle clockwise.

2.Open a nearby hot water faucet to permit the air in the system to escape.

3.Fully open the cold water inlet pipe valve allowing the heater and piping to be filled.

4.Close the hot water faucet as water starts to flow.

5.The heater is ready to be operated.

THE GAS VALVE MUST HAVE BEEN IN THE OFF POSITION FOR AT LEAST 5 MINUTES. This waiting period is an important safety step. Its purpose is to permit gas that may have accumulated in the combustion chamber to clear. IF YOU DETECT GAS ODOR AT THE END OF THIS PERIOD DO NOT PROCEED WITH LIGHTING. RECOGNIZE THAT GAS EVEN IF IT SEEMS WEAK, MAY INDICATE PRESENCE OF ACCUMULATED GAS SOMEPLACE IN THE AREA WITH RISK OF FIRE OR EXPLOSION. SEE THE FRONT PAGE FOR STEPS TO BE TAKEN.

All gas and water lines must be leak tested and open.

Read SEQUENCE OF OPERATION section of this manual prior to lighting and operating this appliance.

With above conditions satisfied, start the unit in accordance with the instructions on the operating label attached to the heater. For your convenience a copy of the instructions are shown on page

24.Each heater is equipped with an ignition control board. The controller will try three times to light the main burner before going into lockout. After the controller tries three times, it will wait one hour before trying to light the unit again. This cycle will continue until the main burners are ignited or the unit is shut down.

ADJUSTMENTS

ON INITIAL STARTUP SOME ADJUSTMENTS ARE NECESSARY.

1.CHECK MANIFOLD AND INLET GAS PRESSURES.

2.CYCLE CHECK - CHECKAT LEAST ONE BURNER OPERATION - WHEN THERMOSTAT IS SATISFIED, BURNER WILL SHUT OFF AND INDUCER WILL STOP RUNNING. ON CALL FOR HEAT - THE INDUCER WILL COME ON AND CLOSE THE PRESSURE SWITCH AND THE IGNITION SEQUENCE DESCRIBED ABOVE WILL BEGIN, SEE “SEQUENCE OF OPERATION”.

SEQUENCE OF OPERATION

The following information will describe the Sequence of Operation for this appliance.

1.Switch power on to unit.

2.Thermostat calls for heat.

3.Ignition Control Board performs diagnostic check on system components.

4.On completion of diagnostics check, the Ignition Control Board sends signal to Exhaust Inducer.

5.Exhaust Inducer begins drawing air through appliance closing the Prover Switch.

6.On completion of Prover Switch engagement, the Ignition Control Board begins the ignition cycle.

7.The Ignition Control Board provides power to the Silicon Nitride Igniter.

8.The Silicon Nitride Igniter heats up for approximately 17 to 20 seconds.

9.At the end of Silicon Nitride Igniter’s warm-up, the Ignition Control Board opens the Gas Valve.

10.From the time the Gas Valve opens, the Ignition Control Board waits 3 seconds and then shuts off power to the Silicon Nitride Igniter.

11.From the time the Silicon Nitride Igniter’s power is shut off, the Ignition Control Board waits 3 more seconds to monitor the Flame Sensor.

12.If the Flame Sensor does not detect a strong enough flame, the Ignition Control Board shuts off the Gas Valve and allows the Exhaust Inducer to purge the unit for 20 seconds. At that time, the Ignition Control Board restarts with step 7. It will try and ignite the main burners 2 more times. If the unit does not light, the Ignition Control Board will wait one hour and then restart at step 3. This cycle will continue until the unit lights or the power is shutoff to the unit.

13.If the Flame Sensor detects a strong flame, the Ignition Control Board will allow the unit to operate until the thermostat is satisfied.

14.Once the unit is satisfied, the Ignition Control Board will shut off the Gas Valve and the unit will be in standby mode until another call for heat is initiated by the thermostat.

See the flow chart on page 32 for more information.

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Contents Installation Operation Service Commercial gas water heatersTable Of Contents Safe Installation, Use and Service ApprovalsGeneral Safety Information Fire and Explosion HazardPrecautions Grounding InstructionsHydrogen Gas Flammable Qualified Installer or Service Agency IntroductionAbbreviations Used QualificationsHydro Cannon self-cleaning system High limit switchLow Gas Pressure Switch Electronic ignition controlInstallation considerations Rough In DimensionsROUGH-IN-DIMENSIONS Recovery CAPACITIES, based on 80% efficiencyLocating the water heater ClearancesInstallation on combustible flooring Insulation BlanketHard Water Circulation pumpsHigh Altitude Installations Installation Requirements Power SupplyWater Temperature Control and Mixing Valves Gas pressure requirementsTemperature-pressure relief valve Dishwashing MachinesClosed Water Systems Thermal ExpansionContaminated Air Air requirementsValve Discharge Pipe Requirements Unconfined Space Confined SpaceVenting Multiple heater manifold Fresh Air Openings For Confined SpacesOutdoor Air Through Two Openings Outdoor Air Through One OpeningOutdoor Air Through Two Vertical Ducts Air From Other Indoor SpacesType B GAS Vent Multiple Gas Fired Tank-Type HeatersTechnical Data Venting Water heater installation Water Line ConnectionsValve Discharge Pipe Tube Inlet Installation Heater wiring GAS Piping GAS Supply Pipe Lengths in FeetPurging GAS Pressure RegulatorAdjustments GeneralFilling Lighting & Operation Label Check the Igniter Assembly Igniter AssemblyChecking Venting Main BurnerChecking the Input MAINTENANCE Remote storage tank temperature controlTemperature-Pressure relief Valve test Venting systemAnode rod inspection Draining and flushingTo Drain the Water Heater Storage Tank To Flush the Water Heater Storage TankTank Cleanout Procedure Deliming Using FLO-JUG MethodDeliming solvents System diagnostics Ignition module systemHigh Water Temperature Shut OFF System For Your InformationElectrical Servicing Start up conditionsSequence of Operation Flow Chart Operational checklist Complaint Cause Remedy User Service AgentDiagrams Water PipingTemperature & Pressure Temperature & Pressure Relief Valve Circulating Pump Multi Flue 2 Units Multi Flue 2 Units with Vertical Storage Tank Multi Flue 2 Units with Vertical Storage Tank Return from Multi Flue 2 Units TWO Temperature Multi Flue 2 Units with Booster TWO Temperature MULTI-FLUE 3 Units MULTI-FLUE 3 Units with Vertical Storage Tank MULTI-FLUE 3 Units with Horizontal Storage Tank Multi Flue Flue 4 Units MULTI-FLUE 4 Units with Vertical Storage Tank MULTI-FLUE 4 Units with Horizontal Storage Tank Manifold Kits Page Page Page Page Limited Warranty Tennessee Waltz Parkway, Ashland City, TN Tech Support Parts

N71120NE, N85390NE specifications

Reliance Water Heaters has established itself as a trusted name in the water heating industry, consistently delivering high-quality products that meet the diverse needs of consumers. Among their offerings, the Reliance N71120NE and N85390NE models stand out due to their advanced features and innovative technologies.

The Reliance N71120NE is known for its efficient heating capabilities, boasting a 40-gallon capacity that is ideal for medium-sized households. This model features a durable glass-lined tank that provides exceptional resistance to rust and corrosion, ensuring longevity and durability. One of its standout characteristics is the built-in energy-saving mode, which optimizes energy consumption without compromising performance. This unit operates on electricity, making it a versatile option for various settings. Additionally, the N71120NE is designed with a temperature control thermostat, allowing users to set and maintain their desired water temperature with ease.

On the other hand, the Reliance N85390NE model offers a larger capacity of 50 gallons, making it suitable for larger families or homes with increased hot water demands. Similar to the N71120NE, this model comes with a glass-lined tank for superior protection against corrosion. One of the advanced technologies featured in the N85390NE is the High-Quality Insulation System, which minimizes heat loss and maintains water temperature efficiently. This model also includes a self-diagnostics system, providing users with real-time updates on performance and maintenance needs. The innovative anode rod in this unit extends the lifespan of the tank by sacrificially corroding instead of the tank itself.

Both models are designed with safety in mind, featuring a pressure relief valve that prevents pressure buildup, making them safe for residential use. Moreover, each unit adheres to the latest energy efficiency standards, contributing to reduced utility bills and a smaller carbon footprint.

Reliance Water Heaters emphasizes user-friendly installation and maintenance, making it easy for homeowners to enjoy the benefits of these advanced water heaters. Overall, the Reliance N71120NE and N85390NE models represent excellence in water heating technology, offering efficient, reliable, and user-friendly solutions for modern households. Choosing either of these models ensures that users can enjoy hot water on demand while benefiting from enhanced efficiency and durability.
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