Lochinvar 399 Shut-Down and Draining, Freeze Protection for a Heating Boiler System if required

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Hydronic Heating Boilers and Domestic Water Heaters

INSTALLATION Continued

Shut-Down and Draining

If for any reason, the unit is to be shut off, the following precautionary measures must be taken:

1.Shut off gas supply.

2.Shut off water supply.

3.Shut off electrical supply.

4.Drain the unit completely. Remove one threaded plug or bulbwell from the inlet side of the front header and one from the outlet side of the front header on the heat exchanger. Blow all water out of the heat exchanger (see FIG. 3).

5.Drain pump and piping.

DRAIN PLUG

DRAIN PLUG

FIG. 3 Draining Unit

Freeze Protection for a Heating Boiler System (if required)

1.Use only properly diluted inhibited glycol antifreeze designed for hydronic systems. Inhibited propylene glycol is recommended for systems where incidental contact with drinking water is possible.

WARNING: Do not use undiluted or

automotive type antifreeze.

2.A solution of 50% antifreeze will provide maximum protection of approximately -30°F (-34°C).

3.Follow the instructions from the antifreeze manufacturer. Quantity of antifreeze required based on total system volume including expansion tank volume.

4.Glycol is denser than water and changes the viscosity of the system. The addition of glycol will decrease heat transfer and increase frictional loss in the boiler and related piping. A larger pump with more capacity (15% to 25% more) may be required to maintain desired flow rates and prevent a noise problem in a glycol system.

5.Local codes may require a back flow preventer or actual disconnect from city water supply when antifreeze is added to the system.

COMBUSTION AND VENTILATION AIR

Provisions for combustion and ventilation air must be in accordance with Section 5.3, Air for Combustion and Ventilation, of the latest edition of the National Fuel Gas Code, ANSI Z223.1, in Canada, the latest edition of CAN/CGA- B149 Installation Code for Gas Burning Appliances and Equipment, or applicable provisions of the local building codes.

Provide properly-sized openings to the equipment room to assure adequate combustion air and proper ventilation when the unit is installed with conventional venting or sidewall venting.

Combustion Air Filter

This unit has a standard air filter located at the combustion air inlet. This filter helps ensure clean air is used for the combustion process. Check this filter every month and replace when it becomes dirty. The filter size on the 399,999 - 750,000 units is 12" x 12" x 1" (30.5cm x 30.5cm x 2.5cm) and 16" x 16" x 1 (40.6cm x 40.6cm x 2.5 cm) on the 990,000 - 2,070,000 units. You can find these commercially available filters at any home center or HVAC supply store.

For convenience and flexibility, you can direct the combustion air inlet from either the back or right side of the unit. To arrange the combustion air inlet for side entry, follow the steps below:

1.Remove the metal panel from the unit’s side wall (see FIG. 4).

2.Remove screws from the air filter/bracket assembly.

3.Move the filter/bracket assembly from the rear of unit to the side opening (see FIG. 5).

4.Attach filter/bracket assembly to the unit’s side using the pre-drilled screw holes.

5.Attach the metal panel to the rear combustion air opening to seal it off.

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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 ChimneySidewall Air Inlet Combustion Air Inlet PipingLength of Air Inlet Pipe Vertical Rooftop Air Inlet ClearancesBarometric Damper Location Vent System OptionsCombined Air Inlet Points Flue Outlet Piping Conventional Negative Draft VentingNegative Draft 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 51-100 101-200 201-300 301-500Venting of Combination Gas Valves Combination Gas ValvesChecking Gas Supply Pressure Table L Gas Manifold Pressure AdjustmentMultiple Unit Installations Gas Supply Pipe Sizing Connecting to Water Supply Low Water Cutoff Water Flow SwitchRelief Valve Circulator Pump Requirements General Plumbing RulesWater Connections Heating Boilers Only Heat Exchanger Pressure Drop Chart Circulator Pump SpecificationsPump Installation and Maintenance Primary/Secondary Boiler PipingInput LTV Valve Kit Btu/hr Low Temperature Return Water SystemsTable O LTV Valve Kits 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-RProgramming Buttons Ignition Systems and StagesOperating Modes Placement of Sensors Access LevelsTemperature Control Staging Logic Graphic SymbolsProgramming For Mode 1, Boiler Operation 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 PumpCombustion and Ventilation Air Heat Exchanger CleaningElectrical Adjustment Procedure Adjusting Differential Air PressureSet Up 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
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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.

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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.