Lochinvar 1, 000 through 2 warranty Integral Bypass, Bypass Valve Synchronization

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INTEGRAL BYPASS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HOT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WATER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BYPASS VALVE

OUTLET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PRIMARY PUMP HEAT

EXCHANGER

SECONDARY

HEAT

EXCHANGER

COLD

WATER

INLET

FIG. 40 Bypass Piping with Valve Actuator and Pump

temperature conformal coating to prevent any corrosive damage to the copper tubes or cast iron headers from the low pH condensate. The protective coating is brown in color and covers both the headers and finned tube surfaces. The secondary heat exchanger is designed to maximize heat transfer efficiency by fully condensing flue products. The inner jacket that houses the secondary heat exchanger is designed to collect the flue gas condensate and discharge it from the jacket.

This appliance contains an integral bypass and circulating pump that connects the primary and secondary heat exchangers. A floating-point automatic bypass valve regulates the flow of water through the bypass between the two heat exchangers. The valve is a butterfly type valve with an EPDM seat and a 24 VAC gear driven motorized actuator. The appliance’s internal Excel-10 controller senses inlet water temperature to the primary heat exchanger and provides a 24 VAC signal to open or close the valve as required. Operation of the bypass is based on an assumed flue gas dewpoint temperature of 130°F (54.4°C) as referenced in the ANSI standards. The dewpoint of flue gasses becomes the minimum acceptable inlet water temperature for the primary heat exchanger. Sustaining water temperatures in the primary heat exchanger above the dewpoint prevents formation of flue gas condensate on the primary heat exchanger. The Excel 10 establishes a dead band around the 130°F (54.4°C) setting of +1.8°F (2°C). This means the actual temperature can vary positive or negative approximately 2° around the 130°F (54.4°C) minimum desired setting. The variable input rate of the burner from 25% to 100% will also affect the position of the bypass valve as it adjusts to maintain primary heat exchanger (Bypass) temperatures above the 130°F (54.4°C) setting. The inlet temperature to the primary heat exchanger is displayed by the command display and provides the Excel 10 the adjustment point for the bypass valve. The inlet water temperature to the primary heat exchanger generally should not remain below the minimum dewpoint temperature for more than approximately five minutes. In this case, the inlet temperature to the primary heat exchanger is

rarely below 125°F (51.7°C). The actuator on the bypass valve will take between a minimum time of 180 seconds up to a maximum time of 300 seconds to move from a “full closed” position to a “full open” position or vice versa. Operation of the bypass valve actuator assures that water temperature in the primary heat exchanger is maintained high enough to prevent condensate formation on the primary heat exchanger.

BYPASS VALVE - Synchronization

As the main power is switched on and/or when the run/stop switch is placed in the “RUN” position, the bypass valve will go through a synchronization process to establish a reference point for opera- tion. After the initial synchronization on start-up, the bypass will resynchronize in approximately 2 week intervals of normal operation. This resynchronization will only occur in an off cycle operation of an installed appliance. During the synchronization process the Excel 10 controller will overdrive the valve actuator to a full closed position. This establishes a reference point to assure quicker response to variation in inlet water temperature. The bypass valve operates best when it can start operation from a full closed position. A status point mode of Byp Synch will be indicated in the Command Display as the actuator on the bypass valve is overdriven to the closed position for synchronization.

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Contents IFB/IFW-i&s-05 WarrantySpecial Instructions To Owner Table of Contents Do not Checking EquipmentWhat to do if YOU Smell GAS Owner WarningRecommended Service Clearances Installation Procedure Location of UnitTable a Clearances from Combustible ConstructionCombustion Air Direct from Outside Minimum Recommended Combustion Table BAIR Supply to Mechanical Room 500 in2 3226 cm2 667 in2 4303 cm2 000 in2 12,903 cm2Construction Air Filter Construction AIR FilterVenting Construction AIR Filter Kits Table CTable D Category IV Flue Pipe SizesCategory IV Venting Category IV Positive Pressure Venting SystemCategory IV Flue Pipe Materials Venting Guidelines for a Category IV VentExceed a maximum of 100 equivalent feet 30.5 m in length Drain Tee InstallationGeneral Category IV Vent Termination Clearances Vertical Venting Terminations Masonry Chimney InstallationsTable E Sidewall Venting TerminationsSidewall Vent Cap Kits Sidewall VentDirect Vent INTELLI-VENT Systems Location of a Sidewall Vent TerminationDirect Vent and Intelli-Vent Flue Air Inlet Pipe Sizes Table FAir Inlet Length of Air Inlet PipeCombined Combustion Air Inlet Points Vertical Direct Vent SystemsHorizontal Direct Vent Multiple Vertical Direct Vent InstallationsLocation of a Sidewall Air Inlet Cap Sidewall Combustion AIR InletTable G These are Multiple Horizontal Direct Vent InstallationsCombined Air Inlet Points Table HMaximum Length of an Intelli-Vent System Air Inlet Sidewall Input Flue Pipe Btu/hr SizeAir Inlet Sidewall Input Flue Pipe Horizontal INTELLI-VENT with Vertical Combustion AIRBtu/hr Size Cap Kit 500,000 SVK3026Location of a Rooftop Air Inlet Cap Vertical Combustion Horizontal INTELLI-VENT AIR InletTable J Table K GAS Supply GAS Pressure TestGAS Connection Table LMultiple Appliance Installations Gas Pipe Size Chart Recommended Gas Pipe Size Single Appliance InstallationsTable M Table NInstall Piping to Control GAS Manifold Pressure AdjustmentGAS Piping Checking GAS Supply PressureChecking Manifold GAS Pressure Water Connections Water ConnectionsMinimum Pipe Size Requirements Secondary Heat Exchanger Primary Heat ExchangerInlet and Outlet Connections Bypass Valve Synchronization Integral BypassIntegral Circulator Bypass Piping AssemblyOptional Intermittent Pump Operation Bypass Initial Set-up of Maximum Water FlowBtu/hr Input Temperature Rise Minimum Water TemperaturesTable P Bypass OperationTable Q Water Flow SwitchLOW Water Cutoff GAS Train and ControlsDiaphragm GAS Valve Ratio GAS Valve Relief ValveElectrical Connections Jacket AssemblyFront Control Panel Locations Access to Components and ControlsTransformer and Relay Locations Variable Frequency DriveExcel High GAS Pressure Switch LOW GAS Pressure Switch OptionalLOW AIR Pressure Switch Be used as a diagnostic indicator Default Values Pre-programmed in the Excel Temperature AdjustmentTable S To Activate the Manual OverrideConfiguring Command Display Password FunctionTable T Display Default Values Accessing the SIX Changeable Points from Command DisplayTotal Run Time Calculated Set PointSet Point Temp Sequencing TypeCommand Display Data Screen Table U Status PointsStatus Point Operational Modes Hot Surface Igniter OnOptional on Heating Boilers Only Outdoor Reset Function SelectionsEfficiency Optimized with Time Equalization Multiple Appliance InstallationsTable W Singly Terminated FTT Network Bus Topology SpecificationsInterfacing Multiple Appliances Additional Components Used to Interface Multiple Appliances Wire Termination for E-Bus ConnectionTypical Building Management System Diagram High Water Temperature Limit ControlIgnition Module Lockout Functions Service PartsHOT Surface Ignition System Table Y Diagnostic Status IndicationIgnition and Control Timings Table ZIndicator OPERATION/DIAGNOSTIC LIGHTS, Resets and SwitchesBurner Table AACombustion Air Blower and Transition Chamber Combustion AIR BlowerSystem Optional Condensate ManagementTable BB Condensate Drain Location On RearReplenishing the Neutralizer Condensate TestingCondensate Trap Installation Lighting Instructions Install Condensate TrapIgnition System Checkout To Turn OFF GAS to ApplianceHeat Transfer Process Sequence of OperationEnd of Sequence MaintenanceBurner Maintenance Burner Removal and CleaningLocation of Primary Heat Exchanger Burner Cleaning ProcedureSecondary Heat Exchanger Inspection Lubrication Freeze Protection Freeze Protection for a Heating Boiler System If Required Heating Boiler InstallationsWater Treatment Water Connections Heating Boilers onlyPiping Lengths Primary Loop Circulator Pump SpecificationsBoiler Circulator Pump Limitations Circulator Pump OperationPRIMARY/SECONDARY Boiler Piping Minimum Boiler Water TemperaturesTable CC Boiler Temperature Rise Chart Table DDMaximum Flow for Heating Boiler Btu/hr Input Maximum FlowPlacing the Boiler Operation TEMPERATURE/PRESSURE GaugeTypical Heating Boiler Installations Boiler Operation Installation with a Chilled Water SystemBoiler Operating Temperature Control Typical Water Heater Piping with Storage Tank Water Velocity ControlMaximum Flow Rate Btu/hr Input Table EETable FF Water Chemistry Single Water Heater Piping with Two Storage Tanks Piping Multiple Unit InstallationsPump Operation Table GGHeat Exchanger Common ManifoldTable HH Thermostat SettingsCathodic Protection Optional Relief ValveThermal Expansion Ladder Diagram PWM Wiring Diagram
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000, 000 through 2, 1 specifications

Lochinvar 1 is a remarkable achievement in the realm of modern technology and engineering. As a powerful and efficient water heater, it has been designed to cater to a wide range of residential and commercial needs. One of the standout features of Lochinvar 1 is its advanced heating technology, which incorporates a high-efficiency condensing design. This technology allows the unit to achieve impressive energy savings by maximizing heat transfer while minimizing energy consumption.

The Lochinvar 1 utilizes a stainless steel heat exchanger that enhances durability and corrosion resistance. This not only extends the lifespan of the unit but also ensures consistent performance over time. Coupled with a user-friendly control system, users can easily adjust settings and monitor performance, enhancing overall convenience and usability.

Another key characteristic of the Lochinvar 1 is its compact design, making it suitable for a variety of installation environments. Whether in a residential basement or a commercial utility room, the unit’s space-saving configuration allows for efficient use of available area without compromising on capability.

Safety features are integral to the Lochinvar 1, providing peace of mind for users. The unit is equipped with advanced monitoring systems that can detect irregularities and automatically shut down the system if necessary. This not only protects the equipment but also enhances the safety of the environment in which it operates.

In terms of performance, Lochinvar 1 boasts a high recovery rate, ensuring hot water is available on demand. This is particularly beneficial for settings with high water usage, allowing simultaneous operations without lag.

Moreover, the unit supports various venting options, offering flexibility during installation. Whether using traditional vertical venting or innovations like direct venting, Lochinvar 1 accommodates different building designs and local codes, making it highly versatile.

In conclusion, Lochinvar 1 epitomizes the melding of efficiency, reliability, and user-friendly technology. With its high-performance features, robust safety systems, and adaptable installation options, it stands out as a forefront player in the water heating industry, meeting the diverse needs of today's consumers and businesses alike.
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