Lochinvar WH 55-399 operation manual Mounting the boiler, Mounting to a wood studded wall

Page 13

2 Prepare boiler (continued)

13.Reattach the Molex plug to the gas valve.

14.Models 55 - 285 only, turn the gas valve power switch to the “ON” position.

15.Model 399 only, turn on power at the source.

16.After the installation is complete, fill out the gas conversion label (in the conversion kit bag) and affix it to the unit under the boiler rating plate inside the unit. Attach the LP caution label (in the conversion kit bag) to the left side of the unit in the lower left corner.

17.Replace the front access cover.

￿ WARNING

After converting to LP, check combustion

per the Start-up procedure in Section 10

of this manual. Failure to check and verify combustion could result in severe personal injury, death, or substantial property damage.

Figure 2-3Installing Propane Orifice

GAS VALVE

GROMMET

BRASS ORIFICE

SCREWS

VENTURI

Mounting the boiler

See page 9 of this manual for boiler mounting location instructions.

NOTICE

The Knight Wall Mount boiler is not

intended for floor installation.

 

Mounting to a wood studded wall:

1.The wall mount bracket is designed for a stud spacing of 16 inches from center. For other stud spacing a solid mounting surface must be provided by the installer.

￿WARNING Do not mount the boiler to a hollow wall. Be sure to mount the boiler to the studs

only.

2.Mount the wall bracket using the 2 1/4" lag bolts provided. Make sure the top edge of the bracket is away from the wall. Ensure the bracket is level when mounted. Extreme care is needed to ensure the bolts are secured in the center of the studs.

3.Hang the boiler on the bracket and secure the bottom of the boiler with two (2) additional lag bolts provided.

Installation & Operation Manual

￿WARNING The boiler is too heavy for a single person to lift. A minimum of two people is needed for

mounting the boiler onto the bracket.

Mounting to a concrete wall:

1.Mount the wall bracket using the two (2) wedge anchor bolts provided with the bracket. To mount the wedge anchor bolts, drill a 1/4" diameter hole 1 1/8" deep and insert anchor. Hang the bracket from the anchor and secure with the two nuts provided. Make sure the top edge of the bracket is away from the wall. Ensure bracket is level when mounted. Extreme care is needed to ensure the bolts are secured in the center of the studs.

Note: If wall thickness does not allow a 1 1/8" deep hole, field supplied hardware suitable for the application should be provided.

2.Hang the boiler on the bracket and secure the bottom of the boiler with two (2) remaining anchors, following the instructions above.

The boiler is too heavy for a single person to ￿ WARNING lift. A minimum of two people is needed for

mounting the boiler onto the bracket.

Mounting to a metal studded wall:

1.The wall mount bracket is designed for a stud spacing of 16 inches from center. For other stud spacing a solid mounting surface must be provided by the installer.

￿WARNING Do not mount the boiler to a hollow wall. Be sure to mount the boiler to the studs only.

2.Mount the wall bracket using two (2) field supplied toggle bolts capable of supporting 100 pounds each. Ensure the top edge of the bracket is away from the wall. Ensure the bracket is level when mounted. Extreme care is needed to ensure the bolts are secured in the center of the studs.

3.Hang the boiler on the bracket and secure the bottom of the boiler with two (2) field supplied toggle bolts.

￿WARNING The boiler is too heavy for a single person to lift. A minimum of two people is needed

for mounting the boiler onto the bracket.

Figure 2-4Mounting the Boiler

WALL:

WOOD OR METAL STUDS ON 16" CENTERS -OR-

MASONRY / POURED CONCRETE MOUNTING BRACKET (FACTORY SUPPLIED)

FASTENERS

APPROPRIATE

FOR WALL TYPE

QTY: 4

13

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Contents Models WH 55 Contents Please read before proceeding When servicing boilerBoiler operation Boiler waterStainless steel heat exchanger Knight Wall Mount Boiler How it worksModels 55 Knight Wall Mount Boiler Ahri Rating RatingsCloset and alcove installations Installation must comply withDetermine boiler location Before locating the boiler, check1Closet Installation Minimum Required Clearances Vent and air piping PrecautionsWall mounting location Prevent combustion air contaminationProducts to avoid When using an existing vent system to install a new boilerAreas likely to have contaminants When removing a boiler from existing common vent system Remove boiler from wood pallet Prepare boilerGas conversions Mounting to a wood studded wall Mounting the boilerMounting to a concrete wall Mounting to a metal studded wallDirect venting options Sidewall Vent General ventingAir intake/vent connections Install vent and combustion air pipingSizing Requirements for installation in CanadaModel Kit Number Equivalent Vent Length Model Max Vent AirAir inlet pipe materials MaterialsAir contamination Optional room airMaterial Standard Approved PVC/CPVC Vent Pipe and FittingsVent pipe Vent fittingsPolypropylene ModelCentrotherm InnoFlue SW Duravent Polypro Stainless steel vent Sidewall direct venting If using the alternate sidewall terminationVent/air termination sidewall Determine location2AClearance to Gravity Air Inlets Prepare wall penetrations Model Air Vent Centerline WidthMultiple vent/air terminations Prepare wall penetrations Alternate Field Supplied OptionSidewall termination optional concentric vent Sidewall termination installationDescription and usage Sidewall termination optional concentric vent models 92 and 3 Concentric Vent Dimensional Drawing reference D onMultiventing sidewall terminations 12Concentric Vent Sidewall AttachmentVent/air termination vertical Vertical direct ventingPrepare roof penetrations Vertical termination optional concentric vent Vertical termination installationMinimum Combustion AIR Typical Multiventing vertical terminationsVent / Air Inlet Size Minimum Existing Vent / Chase Size Alternate vertical concentric ventingConcentric Venting Arrangement Existing vent as a chaseSystem water piping methods General piping information Hydronic pipingLow water cutoff device Chilled water systemNear boiler piping components Circulator sizing Near boiler piping connections25F Temperature Rise Applications 20F Temperature Rise Applications35F Temperature Rise Applications Pump Size GrundfosVariable speed pump setup Smart System / Multi-temperature loop control optionVariable speed pump option 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 gasCheck inlet gas supply Natural Gas Pipe Capacity ChartLength of Pipe in Straight Feet for 1/2 PSI Gas Pressure Gas valve replacementInstallation must comply with Low voltage connections Field wiringLine voltage connections Louver proving switch Outdoor temperature sensorFlow switch ThermostatWiring of the cascade Alarm contactsSystem supply sensor Boiler management systemFieldwiring InstallationCondensate drain Condensate disposalStart-up Freeze protection when usedCheck/control water chemistry Fill and test water systemCheck for gas leaks Inspect/fill condensate system Clean/Inspect Trap AssemblyCheck thermostat circuits Inspect/check condensate lines and fittingsStart the boiler Final checks before starting the boilerIf boiler does not start correctly Check system and boiler2Operating Instructions Models 55 Operating Instructions Model Natural Gas Propane Set space heating operationConfiguration of the cascade Verify DHW modeSet domestic hot water DHW operation General Operating informationProtection features Boiler temperature regulation Cascade Outdoor reset operation, if usedOperation Display Sequence of operationInstaller Access modesUser 1Control Panel Knight wall mount boiler control moduleCall for Heat Information Dial Function Service technician Maintenance Maintenance and annual startupOwner maintenance See the following pages for instructions GeneralMaintenance Check all boiler wiring Check ignition ground wiringCheck control settings Flue vent system and air pipingCleaning boiler heat exchanger Check flame signalPerform start-up and checks Check burner flamePC 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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