Lochinvar WH 55-399 operation manual Boiler Member

Page 42

Installation & Operation Manual

6 Hydronic piping

Figure 6-7Multiple Boilers - Single Temperature Zoned with Circulators - DHW Priority

 

 

 

Number of Units

 

Model

2

3

4

5

6

7

8

 

 

Required Pipe Sizes

 

55

1-1/4"

1-1/2"

1-1/2"

2"

2"

2"

2"

85

1-1/4"

1-1/2"

2"

2"

2"

2-1/2"

2-1/2"

110

1-1/2"

2"

2"

2-1/2"

2-1/2"

2-1/2"

3"

155

2"

2"

2-1/2"

2-1/2"

3"

3"

4"

199

2"

2"

2-1/2"

3"

4"

4"

4"

285

2-1/2"

2-1/2"

3"

4"

4"

4"

5"

399

2-1/2"

3"

4"

4"

5"

5"

5"

 

 

ZONE #1

 

 

PRESSURE

 

 

 

 

REDUCING VALVE

PRESSURE

ZONE #2 ZONE #3 ZONE #4

 

BACKFLOW

GAUGE

 

 

 

 

PREVENTER

 

 

 

 

MAKE UP

 

 

 

FLOW CHECK

WATER

 

 

 

 

 

 

VALVE

SYSTEM SUPPLY

 

 

 

(TYPICAL)

SENSOR

 

 

 

 

AIR SEPARATOR

 

 

 

ZONE CIRCULATORS

 

 

 

 

(TYPICAL)

 

EXPANSION

 

 

 

 

TANK

 

 

BALL VALVE

 

MAY SUBSTITUTE LOW LOSS HEADER

 

(TYPICAL)

 

NOT TO EXCEED 4 PIPE DIA OR MAX. OF 12" APART

DRAIN POINT

 

 

 

 

 

(TYPICAL)

 

 

ANTI-SCALD

 

 

 

 

HOT

 

 

Y-STRAINER

MIXING VALVE

 

 

 

WATER

 

 

(RECOMMENDED)

 

 

 

 

OUT

 

 

(TYPICAL)

DOMESTIC

 

 

 

 

 

 

HOT WATER

 

BOILER

 

CIRCULATOR

COLD

CIRCULATOR

 

 

WATER

 

PRESSURE

 

 

IN

RELIEF VALVE

 

 

 

BOILER 2

BOILER 1

(MEMBER 1)

(LEADER)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INDIRECT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DRAIN

 

 

TEMPERATURE /

 

 

 

 

 

 

DHW TANK

 

 

 

 

 

UNION

 

 

 

 

 

 

PRESSURE

 

 

 

 

(TYPICAL)

 

 

 

 

 

GAUGE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTICE

Please note that these illustrations are meant to show system piping concept only, the installer is responsible for all equipment and detailing required by local codes.

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Contents Models WH 55 Contents Boiler operation When servicing boilerPlease read before proceeding Boiler waterKnight Wall Mount Boiler How it works Stainless steel heat exchangerModels 55 Ratings Knight Wall Mount Boiler Ahri RatingDetermine boiler location Installation must comply withCloset and alcove installations Before locating the boiler, check1Closet Installation Minimum Required Clearances Wall mounting location PrecautionsVent and air piping Prevent combustion air contaminationWhen using an existing vent system to install a new boiler Products to avoidAreas likely to have contaminants When removing a boiler from existing common vent system Prepare boiler Remove boiler from wood palletGas conversions Mounting to a concrete wall Mounting the boilerMounting to a wood studded wall Mounting to a metal studded wallGeneral venting Direct venting options Sidewall VentInstall vent and combustion air piping Air intake/vent connectionsModel Kit Number Equivalent Vent Length Requirements for installation in CanadaSizing Model Max Vent AirMaterials Air inlet pipe materialsOptional room air Air contaminationVent pipe Approved PVC/CPVC Vent Pipe and FittingsMaterial Standard Vent fittingsModel PolypropyleneCentrotherm InnoFlue SW Duravent Polypro Stainless steel vent Vent/air termination sidewall If using the alternate sidewall terminationSidewall direct venting Determine location2AClearance to Gravity Air Inlets Model Air Vent Centerline Width Prepare wall penetrationsPrepare wall penetrations Alternate Field Supplied Option Multiple vent/air terminationsSidewall termination installation Sidewall termination optional concentric ventDescription and usage 92 and 3 Concentric Vent Dimensional Drawing reference D on Sidewall termination optional concentric vent models12Concentric Vent Sidewall Attachment Multiventing sidewall terminationsVertical direct venting Vent/air termination verticalPrepare roof penetrations Vertical termination installation Vertical termination optional concentric ventMultiventing vertical terminations Minimum Combustion AIR TypicalConcentric Venting Arrangement Alternate vertical concentric ventingVent / Air Inlet Size Minimum Existing Vent / Chase Size Existing vent as a chaseLow water cutoff device Hydronic pipingSystem water piping methods General piping information Chilled water systemNear boiler piping components Near boiler piping connections Circulator sizing35F Temperature Rise Applications 20F Temperature Rise Applications25F Temperature Rise Applications Pump Size GrundfosSmart System / Multi-temperature loop control option Variable speed pump setupVariable 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 Connecting gas supply piping Gas connectionsNatural gas Propane GasNatural Gas Pipe Capacity Chart Check inlet gas supplyLength of Pipe in Straight Feet for 1/2 PSI Gas valve replacement Gas PressureField wiring Installation must comply with Low voltage connectionsLine voltage connections Flow switch Outdoor temperature sensorLouver proving switch ThermostatSystem supply sensor Alarm contactsWiring of the cascade Boiler management systemInstallation FieldwiringCondensate disposal Condensate drainCheck/control water chemistry Freeze protection when usedStart-up Fill and test water systemCheck thermostat circuits Clean/Inspect Trap AssemblyCheck for gas leaks Inspect/fill condensate system Inspect/check condensate lines and fittingsIf boiler does not start correctly Final checks before starting the boilerStart the boiler Check system and boiler2Operating Instructions Models 55 Operating Instructions Model Set space heating operation Natural Gas PropaneVerify DHW mode Configuration of the cascadeSet domestic hot water DHW operation Operating information GeneralProtection features Boiler temperature regulation Outdoor reset operation, if used CascadeSequence of operation Operation DisplayAccess modes InstallerUser Knight wall mount boiler control module 1Control PanelCall for Heat Information Dial Function Owner maintenance Maintenance Maintenance and annual startupService technician See the following pages for instructions GeneralMaintenance Check control settings Check ignition ground wiringCheck all boiler wiring Flue vent system and air pipingPerform start-up and checks Check flame signalCleaning boiler heat exchanger Check burner flameDiagrams PC Interface2Wiring 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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