Lochinvar 999 - 750 Programming For Mode 2, Water Heating Operation, Remote Mounting of Sensors

Page 48

Hydronic Heating Boilers and Domestic Water Heaters

OPERATION Continued

To program settings for Mode 1 operation, press in and hold the three programming buttons for 3 seconds. The screen will change from the View Menu to the Adjust Menu. “Adjust” will appear in the upper right corner of the screen. Just under the word “Adjust” will be either the number 1, 2, or 3. Press the “+” or “–” button to select the number “1”. This places the control into Mode 1.

Press the “Select” button to scroll through the menu offerings. Press the “+” or “–” button to change values within each offering.

See TABLE–Q , page 44 for Mode 1 Adjust Menu settings.

Programming For Mode 2, Water Heating Operation

Mode 2 is for base water heating operation. A tank sensor is supplied with the unit. You must connect the supplied tank sensor to the control and install the sensor into the water storage tank. If you do not, the controller will default to either inlet or outlet control (whichever is setup as the controlling sensor). Once the tank sensor is connected, the controller automatically selects that sensor as the controlling sensor. See Remote Mounting of Sensors on page 48 for more information on installing the tank sensor.

To program settings for Mode 2 operation, press in and hold the three programming buttons for 3 seconds. The screen will change from the View Menu to the Adjust Menu. “Adjust” will appear in the upper right corner of the screen. Press the “+” or “–” button until the number “2” appears under the word “Adjust”. This places the control into Mode 2.

Press the “Select” button to scroll through the menu offerings. Press the “+” or “–” button to change values within each offering.

See TABLE–Q, page 44 for Mode 2 Adjust Menu settings.

TABLE-S

Programming Worksheet

Stage 1:

 

Set Point 1_________

Off at_________

Differential 1_________

On at_________

Stage 2:

 

Set Point 2_________

Off at_________

Differential 2_________

On at_________

Stage 3:

 

Set Point 3_________

Off at_________

Differential 3_________

On at_________

Stage 4:

 

Set Point 4_________

Off at_________

Differential 4_________

On at_________

Programming For Mode 3, Sequenced Operation

Mode 3 is for sequenced operation. A Building Management System will sequence the operation of the unit. Most of the control of the unit will be handled by the Building Management System.

To program settings for Mode 3 operation, press in and hold the three programming buttons for 3 seconds. The screen will change from the View Menu to the Adjust Menu. “Adjust” will appear in the upper right corner of the screen. Press the “+” or “–” button until the number “3” appears under the word “Adjust”. This places the control into Mode 3.

Press the “Select” button to scroll through the menu offerings. Press the “+” or “–” button to change values within each offering.

See TABLE–Q, page 44 for Mode 3 Adjust Menu settings. Refer to FIG. 42 for various mode terminal strip connection options.

Remote Mounting of Sensors

You must mount the outside air temperature sensor outside the building. To mount remote sensors, follow the guidelines below. Take care to correctly wire sensors to the unit. Erratic temperature readings can be caused by poor wiring practices. Twist the wires between the unit and the remote sensor. Turn wires at least three or four turns per linear foot of wiring. This provides common mode rejection of some types of electrical interferences.

1.Do not route temperature sensor wiring with building power wiring.

2.Do not locate temperature sensor wiring next to control contactors.

48

Page 47 Page 49
Image 48
Page 47 Page 49
Contents Domestic Water Heaters Hydronic Heating Boilers and Domestic Water Heaters General Product Information UnpackingSafety Information Installation Installation Clearances from Combustible ConstructionOutdoor Boiler Installation LocationFreeze Protection Pump OperationShut-Down and Draining Freeze Protection for a Heating Boiler System if requiredCombustion and Ventilation AIR Combustion Air FilterCombustion Air Options Outside Combustion Air, No DuctsCombustion Air from Interior Space Venting Exhaust FansGeneral Information Vertical Vent Termination Clearances and LocationSidewall Vent Termination Clearances and Location ChimneyCombustion Air Inlet Piping Length of Air Inlet PipeSidewall Air Inlet Vertical Rooftop Air Inlet ClearancesVent System Options Combined Air Inlet PointsBarometric Damper Location Conventional Negative Draft Venting Negative DraftFlue Outlet Piping Vertical DirectAire Venting Vertical Vent Termination Clearances and LocationInstallation Vent Kits Venting of Flue ProductsSidewall Venting Sidewall FanSidewall Venting Termination Sidewall Venting Without FanVenting Guidelines Masonry Chimney Installation Horizontal DirectAire VentingVent Kits Direct VentingVertical DV Venting Termination Connecting the Air Inlet Pipe to the Unit Horizontal DV Venting TerminationFlue Pipe Materials Combustion Air Inlet PipingAir Inlet Piping Materials Sealing PVC, CPVC, ABS, Dryer Vent, and Flex Duct Vent PipeOutdoor Installation Venting MaximumOutdoor Vent/Air Inlet Location Outdoor Vent Cap KitConnecting to GAS Supply Connecting Gas Piping to UnitGas Piping Gas Pressure TestGas Train and Controls TABLE-JBtu/hr Distance From Meter in feet Input 51-100 101-200 201-300 301-500Combination Gas Valves Checking Gas Supply PressureVenting of Combination Gas Valves Gas Manifold Pressure Adjustment Multiple Unit Installations Gas Supply Pipe SizingTable L Connecting to Water Supply Water Flow Switch Relief ValveLow Water Cutoff General Plumbing Rules Water Connections Heating Boilers OnlyCirculator Pump Requirements Heat Exchanger Pressure Drop Chart Circulator Pump SpecificationsPump Installation and Maintenance Primary/Secondary Boiler PipingLow Temperature Return Water Systems Table O LTV Valve KitsInput LTV Valve Kit Btu/hr Radiant Floor and Snow Melt Heating Systems 10ºF 20ºF 30ºF 40ºFTemperature/Pressure Gauge Boiler Flow RatePlacing the Boiler in Operation Boiler Bypass RequirementsInstallation with a Chilled Water System Boiler Operating Temperature ControlWater Treatment Terminal Strip Connection OptionsFor Your Safety Read Before Operating Remote ON/OFF Boiler or Water HeaterOperation Power Up Quick Programming OverviewTo Turn Off Gas To Appliance Standard Btu/hr ModelsAdjust Menu Setting Descriptions Adjust Menu Settings for Operating ModesTABLE-Q TABLE-RIgnition Systems and Stages Operating ModesProgramming Buttons Access Levels Temperature ControlPlacement of Sensors Graphic Symbols Programming For Mode 1, Boiler OperationStaging Logic Programming For Mode 2, Water Heating Operation Programming For Mode 3, Sequenced OperationRemote Mounting of Sensors TABLE-SError and Warning Messages HOT Surface Ignition SystemHot Surface Igniter and Ignition Control Module Hot Surface Ignition Control ModuleDiagnostic Status Indication Access to Internal Control PanelIgnition Control Diagnostic Codes Removing the Control PanelOperation and Diagnostic Lights Status LED Diagnostic CodesIgnition and Control Timings Hot Surface Ignition Module Timings NominalRequired Temperature Rise Temperature Rise ChartWater Velocity Control Water ChemistryPipe Size Requirements Circulating PumpTABLE-X 399,999 750,000 Btu/hr ModelsPotable Hot Water Temperature Control Settings Minimum Pump PerformanceHeat Exchanger TABLE-YHigh Water Temperature Limit Control Optional Relief ValveThermal Expansion Location of Cold Water Supply Piping ConnectionsFlue Gas Passageways Cleaning Procedures Burner Removal and CleaningAppliance Area Water Circulating PumpHeat Exchanger Cleaning ElectricalCombustion and Ventilation Air Adjusting Differential Air Pressure Set Up ProcedureAdjustment Procedure Servicing Hot Surface Igniter and Ignition Module Ignition System CheckoutSequence of Operation Ignition Troubleshooting Guide 990,000 2,070,000 Btu/hr Models Domestic Water Heaters Hydronic Heating Boilers Ladder Diagram 399,999 750,000 BTU/HR Models Hydronic Heating Boilers and Domestic Water Heaters Installation Ladder Diagram 990,000 2,070,000 BTU/HR Models Models Wiring Diagram Hydronic Heating Boilers and Domestic Water Heaters BTU/HR Models
Related manuals
Manual 76 pages 58.86 Kb

399, CF-CH(E)-i&s-08, 999 - 750 specifications

Lochinvar 999 - 750, CF-CH(E)-i&s-08,399 is a cutting-edge boiler designed for commercial heating applications. With its robust construction and high efficiency, this model stands out in the crowded market of heating solutions.

One of the main features of the Lochinvar 999 - 750 is its exceptional thermal efficiency rating. The unit incorporates advanced condensing technology that allows it to recover heat from flue gases, which helps in achieving efficiency levels of up to 99%. This efficiency not only reduces energy consumption but also lowers operational costs, making it an excellent investment for businesses looking to minimize their carbon footprint.

The boiler is designed to provide a powerful output of 750 kW, ensuring it meets the heating demands of larger buildings or commercial spaces. Its capacity makes it suitable for a range of applications including schools, hospitals, and industrial facilities. Moreover, the unit features a built-in cascading system that enables multiple boilers to be connected, enhancing system reliability and flexibility.

In terms of technology, the Lochinvar 999 - 750 is equipped with a user-friendly touchscreen interface. This innovative control system allows operators to monitor and adjust settings with ease, providing real-time performance data and alerts for maintenance needs. The intelligent controls optimize operation to match the heating load, further enhancing energy efficiency.

Safety is a top priority with this model. It is built with multiple safety features such as automatic shut-off valves, pressure relief valves, and flame monitoring systems, ensuring safe operation under various conditions. The unit also adheres to stringent industry standards and regulations, making it a reliable choice for commercial applications.

Furthermore, the Lochinvar 999 - 750 is designed with serviceability in mind. Its compact footprint and accessible components simplify maintenance, reducing downtime and associated costs. The unit also supports a variety of fuel sources, including natural gas, propane, and biodiesel, providing flexibility to meet different facility requirements.

In summary, the Lochinvar 999 - 750, CF-CH(E)-i&s-08,399 represents a blend of efficiency, reliability, and safety in commercial heating. Its advanced technologies and thoughtful design make it a powerful solution for various heating needs, making it an ideal choice for businesses aiming for excellence in energy management and operational efficiency.
Top Page Image Contents