Reliance Water Heaters D85500NE, D85500PE Maintenance, Checking the Input, Venting System

Page 26

Checking the Input

For appliance installation locations with elevations above 2000 feet, refer to HIGH ALTITUDE INSTALLATIONS section of this manual for input reduction procedure.

1.Attach a pressure gauge or a manometer to the manifold pressure tap on the gas valve and refer to Table 3, page 8 for correct manifold pressure.

2.Use this formula to “clock” the meter. Be sure that other gas consuming appliances are not operating during this interval. (3600/T) x H = Btuh

T = Time in seconds to burn one cubic foot of gas. H = Btu’s per cubic foot of gas.

Btuh = Actual heater input. Example: (Using D85500NE heater) T = 7.56 seconds

H = 1050 Btu Btuh = ?

(3600/7.56) X 1050 = 500,000 Btuh (Compare with the D85500NE model and rating.)

Should it be necessary to adjust the gas pressure to the burners to obtain the full input rate, the steps below should be followed:

3.Remove the regulator adjustment sealing cap, fig. 25, and adjust the pressure by turning the adjusting screw with a screwdriver.

Clockwise to increase gas pressure and input rate. Counterclockwise to decrease gas pressure and input rate.

4.“Clock” the meter as in step 2 above.

5.Repeat steps 3 and 4 until the specified input rate is achieved.

6.Turn the gas control knob to PILOT. Remove the pressure gauge and replace the sealing cap and the threaded plug in the pressure tap opening.

UNDER NO CIRCUMSTANCES SHOULD THE GAS INPUT EXCEED THE INPUT SHOWN ON THE HEATER MODEL AND RATING PLATE. OVERFIRING COULD RESULT IN DAMAGE OR SOOTING OF THE HEATER.

mAINTENANCE

Venting System

Examine the venting system every six months for obstructions and/or deterioration of the vent piping.

Remove all soot or other obstructions from chimney which will retard free draft.

Remote Storage Tank Temperature Control

The water temperature in the remote storage tank (if used) is controlled by the storage tank temperature control. The sensing element is mounted in the hot water storage tank, see Water Piping Diagram section.

A change in water temperature in the storage tank lower than the tank temperature control setting will cause the sensor to activate the circulating pump. The pump then circulates the water through the heater where the thermostat senses the drop in water temperature and activates main burner operation of the appliance.

If the storage tank temperature control is out of calibration, replace with new control.

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

Temperature-Pressure Relief Valve Test

When checking the Temperature-Pressure Relief Valve operation, make sure that (1) no one is in front of or around the outlet of the Temperature-Pressure Relief Valve discharge line, and (2) that the water discharge will not cause any property damage, as the water may be extremely hot. Use care when operating valve as the valve may be hot.

To check the relief valve, lift the lever at the end of the valve several times, see Figure 26. The valve should seat properly and operate freely.

If after manually operating the valve, it fails to completely reset and continues to release water, immediately close the cold water inlet to the water heater and drain the water heater according to the Draining and Flushing instructions on page 27. Replace the Temperature-Pressure Relief Valve with a properly rated/sized new one, see Temperature-Pressure Relief Valve on pages 13-14 for instructions on replacement.

It is recommended that the Temperature-Pressure Relief Valve should be checked to ensure that it is in operating condition every 6 months.

FIGURE 26

If the Temperature-Pressure Relief Valve on the water heater weeps or discharges periodically, this may be due to thermal expansion.

NOTE: Excessive water pressure is the most common cause of Temperature-Pressure Relief Valve leakage. Excessive water system pressure is most often caused by "thermal expansion" in a "closed system." See Closed Water Systems and Thermal

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Contents Commercial gas water heaters Table Of Contents Safe Installation, Use and Service Asme CRNGeneral Safety Information Fire and Explosion HazardHydrogen Gas Flammable PrecautionsGrounding Instructions Qualifications IntroductionAbbreviations Used Features and components 2 NPT Installation considerationsRough In Dimensions Model Right Left Back Ceiling Side Locating the Water HeaterClearances Hard Water Installation On Combustible FlooringInsulation Blanket Circulation PumpsNatural Gas Installations Propane InstallationsHigh Altitude Installations Water Temperature Controland Mixing Valves Installation RequirementsPower Supply Gas Pressure RequirementsClosed Water Systems Temperature-Pressure Relief ValveDishwashing Machines Thermal ExpansionContaminated Air Air RequirementsConfined Space VENTING InstallationUnconfined Space Vent AdapterOutdoor Air Through Two Openings Multiple Heater ManifoldFresh Air Openings For Confined Spaces Outdoor Air Through One OpeningOutdoor Air Through Two Vertical Ducts Air From Other Indoor SpacesTechnical Data Venting Multiple Gas Fired Tank-Type HeatersValve Discharge Pipe Water heater installationWater Line Connections Installation Diagrams Top Inlet/Outlet Usage Code RestrictionsHeater Wiring Gas Pressure Regulator Gas PipingPurging GAS Supply Pipe Length FeetFilling AdjustmentsGeneral For Your Safety Read Before Operating Lighting & Operation LabelCheck Venting Check the Igniter AssemblyIgniter Assembly Main BurnerTemperature-Pressure Relief Valve Test MAINTENANCERemote Storage Tank Temperature Control Checking the InputDraining and Flushing Hot Water OdorAnode Rod Inspection To Drain the Water Heater Storage TankDeliming Solvents Tank Cleanout ProcedureDeliming Using Flo-Jug Method Chemical Hazard For your information High Water Temperature Shut OFF System AIR in HOT Water FaucetsSequence 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 Limited Warranty

D85500PE, D85500NE specifications

Reliance Water Heaters offers a diverse range of high-performance water heaters, with the D85500NE and D85500PE models standing out for their exceptional features and innovative technologies. Designed to meet the needs of modern households, these water heaters are engineered for efficiency, reliability, and ease of use.

The D85500NE is a natural gas water heater that boasts a 50-gallon capacity, making it an excellent choice for medium to large households. One of its main features is the Energy Factor (EF) rating, which ensures efficient operation and reduces energy costs. With a recovery rate of approximately 41 gallons per hour, it's capable of delivering a steady supply of hot water without delays, ensuring that families can enjoy uninterrupted use during peak demands.

The D85500PE model, on the other hand, operates using propane, catering to households with propane systems. Like its natural gas counterpart, the D85500PE also has a 50-gallon capacity and delivers a comparable recovery rate. Both models feature a glass-lined tank, providing corrosion resistance and extending the lifespan of the water heater. This protective lining is crucial for maintaining water quality and ensuring durability over time.

In terms of technology, both the D85500NE and D85500PE are equipped with advanced thermostat and burner systems that allow for precise temperature control. The integrated piezo ignition allows for easy start-up, enabling users to ignite the burner with a simple push of a button. Additionally, the water heaters are designed with safety features such as a pressure relief valve, which prevents excessive pressure build-up.

Another notable characteristic of these models is their user-friendly accessibility. Maintenance access is made simple with installation features that enable straightforward servicing and repairs. The compact design of the units also allows for versatile installation options, whether in a basement, garage, or utility closet.

Finally, both the D85500NE and D85500PE are backed by a solid warranty, providing peace of mind for consumers. With their combination of efficiency, reliability, and advanced features, these water heaters from Reliance Water Heaters are an outstanding choice for anyone looking to enhance their home’s hot water system.