Lochinvar WH 55-399 operation manual When removing a boiler from existing common vent system

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Installation & Operation Manual

1 Determine boiler location (continued)

When removing a boiler from existing common vent system:

￿DANGER Do not install the Knight wall mount boiler into a common vent with any other

appliance. This will cause flue gas spillage or appliance malfunction, resulting in possible severe personal injury, death, or substantial property damage.

￿WARNING Failure to follow all instructions can result in flue gas spillage and carbon monoxide

emissions, causing severe personal injury or death.

At the time of removal of an existing boiler, the following steps shall be followed with each appliance remaining connected to the common venting system placed in operation, while the other appliances remaining connected to the common venting system are not in operation.

a.Seal any unused openings in the common venting system.

b.Visually inspect the venting system for proper size and horizontal pitch and determine there is no blockage or restriction, leakage, corrosion, or other deficiencies, which could cause an unsafe condition.

c.Test vent system – Insofar as is practical, close all building doors and windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building. Turn on clothes dryers and any appliance not connected to the common venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers.

d.Place in operation the appliance being inspected. Follow the lighting instructions. Adjust thermostat so appliance will operate continuously.

e. Test for spillage at the draft hood relief opening after 5 minutes of main burner operation. Use the flame of a match or candle, or smoke from a cigarette, cigar, or pipe.

f.After it has been determined that each appliance remaining connected to the common venting system properly vents when tested as outlined herein, return doors, windows, exhaust fans, fireplace dampers, and any other gas-burning appliance to their previous conditions of use.

g.Any improper operation of the common venting system should be corrected so the installation conforms with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CAN/CSA B149.1, Natural Gas and Propane Installation Code. When resizing any portion of the common venting system, the common venting system should be resized to approach the minimum size as determined using the appropriate tables in Part 11 of the National Fuel Gas Code, ANSI Z223.1/NFPA and/or CAN/CSA B149.1, Natural Gas and Propane Installation Code.

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Contents Models WH 55 Contents Boiler water When servicing boilerPlease read before proceeding Boiler operationStainless steel heat exchanger Knight Wall Mount Boiler How it worksModels 55 Knight Wall Mount Boiler Ahri Rating RatingsBefore locating the boiler, check Installation must comply withCloset and alcove installations Determine boiler location1Closet Installation Minimum Required Clearances Prevent combustion air contamination PrecautionsVent and air piping Wall mounting locationAreas likely to have contaminants When using an existing vent system to install a new boilerProducts to avoid When removing a boiler from existing common vent system Gas conversions Prepare boilerRemove boiler from wood pallet Mounting to a metal studded wall Mounting the boilerMounting to a wood studded wall Mounting to a concrete wallDirect venting options Sidewall Vent General ventingAir intake/vent connections Install vent and combustion air pipingModel Max Vent Air Requirements for installation in CanadaSizing Model Kit Number Equivalent Vent LengthAir inlet pipe materials MaterialsAir contamination Optional room airVent fittings Approved PVC/CPVC Vent Pipe and FittingsMaterial Standard Vent pipeCentrotherm InnoFlue SW Duravent Polypro ModelPolypropylene Stainless steel vent Determine location If using the alternate sidewall terminationSidewall direct venting Vent/air termination sidewall2AClearance to Gravity Air Inlets Prepare wall penetrations Model Air Vent Centerline WidthMultiple vent/air terminations Prepare wall penetrations Alternate Field Supplied OptionDescription and usage Sidewall termination installationSidewall termination optional concentric vent Sidewall termination optional concentric vent models 92 and 3 Concentric Vent Dimensional Drawing reference D onMultiventing sidewall terminations 12Concentric Vent Sidewall AttachmentPrepare roof penetrations Vertical direct ventingVent/air termination vertical Vertical termination optional concentric vent Vertical termination installationMinimum Combustion AIR Typical Multiventing vertical terminationsExisting vent as a chase Alternate vertical concentric ventingVent / Air Inlet Size Minimum Existing Vent / Chase Size Concentric Venting ArrangementChilled water system Hydronic pipingSystem water piping methods General piping information Low water cutoff deviceNear boiler piping components Circulator sizing Near boiler piping connectionsPump Size Grundfos 20F Temperature Rise Applications25F Temperature Rise Applications 35F Temperature Rise ApplicationsVariable speed pump option Smart System / Multi-temperature loop control optionVariable speed pump setup 3Single Boiler Primary / Secondary Piping Make UP Water Indirect Number of Units Boiler Member 8Single Boiler Multiple Temperature DHW Priority Model Required Pipe Sizes Boiler Make UP Boiler Gas connections Connecting gas supply pipingPropane Gas Natural gasLength of Pipe in Straight Feet for 1/2 PSI Natural Gas Pipe Capacity ChartCheck inlet gas supply Gas Pressure Gas valve replacementLine voltage connections Field wiringInstallation must comply with Low voltage connections Thermostat Outdoor temperature sensorLouver proving switch Flow switchBoiler management system Alarm contactsWiring of the cascade System supply sensorFieldwiring InstallationCondensate drain Condensate disposalFill and test water system Freeze protection when usedStart-up Check/control water chemistryInspect/check condensate lines and fittings Clean/Inspect Trap AssemblyCheck for gas leaks Inspect/fill condensate system Check thermostat circuitsCheck system and boiler Final checks before starting the boilerStart the boiler If boiler does not start correctly2Operating Instructions Models 55 Operating Instructions Model Natural Gas Propane Set space heating operationSet domestic hot water DHW operation Verify DHW modeConfiguration of the cascade General Operating informationProtection features Boiler temperature regulation Cascade Outdoor reset operation, if usedOperation Display Sequence of operationUser Access modesInstaller 1Control Panel Knight wall mount boiler control moduleCall for Heat Information Dial Function See the following pages for instructions General Maintenance Maintenance and annual startupService technician Owner maintenanceMaintenance Flue vent system and air piping Check ignition ground wiringCheck all boiler wiring Check control settingsCheck burner flame Check flame signalCleaning boiler heat exchanger Perform start-up and checksPC Interface Diagrams2Wiring Diagram

WH 55-399 specifications

The Lochinvar WH 55-399 is a high-efficiency water heater designed for residential and commercial applications, offering a reliable solution for hot water needs. This model represents an advanced approach to water heating, combining cutting-edge technologies and features that ensure optimal performance and energy efficiency.

One of the standout features of the Lochinvar WH 55-399 is its high thermal efficiency, which is a key factor in reducing energy consumption and operating costs. With an efficiency rating exceeding 90%, this water heater ensures that more energy is converted into usable hot water, making it an environmentally friendly choice.

The WH 55-399 utilizes advanced condensing technology, which allows it to extract additional heat from the exhaust gases before they are expelled. This process not only increases efficiency but also significantly decreases greenhouse gas emissions. The unit is also equipped with an intelligent control system that allows for precise temperature adjustments, ensuring that the user has an optimal supply of hot water while maintaining energy savings.

Another important aspect of this model is its impressive recovery rate. The ability to quickly heat water after a significant draw ensures that users will not experience interruptions in their hot water supply, making it ideal for busy households or commercial environments. This is particularly beneficial in applications requiring consistent hot water availability, such as restaurants or athletic facilities.

The Lochinvar WH 55-399 is designed with durability in mind. Constructed from high-quality materials, this water heater boasts a robust tank lined with corrosion-resistant coatings, extending the lifespan of the unit and reducing maintenance needs. Additionally, it features a reliable gas burner and a well-insulated tank, contributing to its overall efficiency and performance.

Safety is also a priority with the WH 55-399. The unit incorporates multiple safety features, including a flame sensor, automatic shut-off valve, and over-temperature protection, ensuring peace of mind for users.

In summary, the Lochinvar WH 55-399 stands out with its combination of high efficiency, advanced technology, and durable construction. Whether for residential or commercial use, this water heater provides a dependable and cost-effective solution for all hot water needs. Its innovative design and performance characteristics make it a top choice for anyone seeking a premium water heating option.
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