Lochinvar 400-801 Field wiring, Installation must comply with, Line voltage connections

Page 28

5 Field wiring

Outdoor Knight XL Installation & Operation Manual

￿WARNING

NOTICE

￿CAUTION

ELECTRICAL SHOCK HAZARD – For your safety, turn off electrical power supply before making any electrical connections to avoid possible electric shock hazard. Failure to do so can cause severe personal injury or death.

Wiring must be N.E.C. Class 1.

If original wiring as supplied with boiler must be replaced, use only type 105°C wire or equivalent.

Boiler must be electrically grounded as required by National Electrical Code ANSI/NFPA 70 – latest edition.

Ensure that all wiring external to the unit is enclosed in approved conduit.

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.

Installation must comply with:

1.National Electrical Code and any other national, state, provincial, or local codes, or regulations.

Line voltage connections

1.Connect 120 VAC power wiring to the line voltage terminal strip in the junction box, as shown in FIG.5-1.

2.Provide and install a fused disconnect or service switch (15 amp recommended) as required by the code (see FIG. 5-1).

3.When connecting a domestic hot water (DHW) pump, connect the wiring to the line voltage terminal strip as shown in FIG. 5-1.

4.To activate a system pump, wire as shown in FIG. 5-1. Dry contacts are sized for 1.5 hp/120V, 3 hp/240V or 30 amps.

Low voltage connections

Figure 5-1Line Voltage Field Wiring Connections

120V SUPPLY

NEUTRAL

 

 

 

W

 

 

 

GROUND G

 

 

 

LINE BK

 

 

 

SERVICE

 

 

 

SWITCH

 

 

 

SYSTEM

BK

 

 

G

 

 

PUMP

W

 

 

BOILER

BK

 

 

G

 

 

PUMP

W

 

 

DOMESTIC

BK

 

 

HOT WATER

G

 

 

W

 

 

PUMP

 

 

 

 

L2/N

G

L1

28

 

 

 

1.Route all low voltage wires through the knockouts in the rear of the boiler, as shown in FIG. 5-2.

2.Connect low voltage wiring to the low voltage connection board as shown in FIG. 5-3 on page 29 of this manual and the boiler wiring diagram.

Figure 5-2Routing Field Wiring

LOW VOLTAGE

LINE VOLTAGE

JUNCTION BOX

CONNECTION

 

BOARD

 

LOW VOLTAGE

WIRING

KNOCKOUT

PLUGS

IMG00329

 

LINE VOLTAGE

 

 

WIRING KNOCKOUT

 

 

PLUGS

Page 27 Page 29
Image 28
Page 27 Page 29
Contents Outdoor Knight XL Models 400 Contents When servicing boiler Please read before proceedingOutdoor Knight XL How it works Stainless steel heat exchangerModel Models 601 Ratings Outdoor Knight XL Boiler Ahri RatingDetermine boiler location Installation must comply withBefore locating the boiler, check Provide clearances Outdoor vent / air intake locationFlooring and foundation Prevent combustion air contaminationPrepare boiler Install flue pipe assembly Models 400Remove boiler from wood pallet 3Install flue pipe assembly Models 701 Models 7014Installing Propane Orifice Model Gas conversions ModelModels 601 Leveling the boilerHydronic piping TEE with 1 Fitting on TOP Nipple Close Nipple Flow switch adjustment Near boiler piping componentsCirculator sizing Near boiler piping connectionsVariable speed pump option Pressure Head Feet20F 25F 30F 35F Model 7Single Boiler Multiple Temperatures 8Single Boiler Primary/Secondary Piping Number of Units Manifold Pipe Sizes in Inches mm10Multiple Boilers Primary/Secondary Piping Temperature Wires to Loop Sensors 120VAC to Connecting gas supply piping Gas connectionsNatural gas Propane GasCheck inlet gas supply InchesGas valve replacement Gas pressureField wiring Installation must comply withLine voltage connections Low voltage connectionsOutdoor temperature sensor High gas pressure switchLow gas pressure switch ThermostatFlow switch Alarm contactsWiring of the cascade ModBus3Low Voltage Field Wiring Connections Condensate disposal Condensate drainFreeze protection when used Start-upCheck/control water chemistry Fill and test water systemCheck for gas leaks Check thermostat circuitsInspect/fill condensate system Inspect/check condensate lines and fittingsFinal checks before starting the boiler Start the boilerIf boiler does not start correctly Check system and boilerFor Your Safety Read Before Operating Set space heating operation Natural Gas PropaneSet domestic hot water DHW operation Verify DHW modeConfiguration of the cascade Operating information GeneralHow the boiler operates How the control module operatesTemperature control Protection featuresBoiler temperature regulation Outdoor reset operation, if used CascadeSequence of operation Operation DisplayStandby, ready to start a new cycle Access modes InstallerOutdoor Knight XL control module UserCall for Heat Information Dial Function Service technician Maintenance Maintenance and annual startupOwner maintenance Maintenance Flue vent system and air piping Check water systemCheck expansion tank Check boiler relief valveCheck ignition ground wiring Check all boiler wiringCheck control settings Inspect ignition and flame sense electrodesCheck flame signal Cleaning boiler heat exchangerReview with owner Model Kit Part Component Number DescriptionDiagrams High Voltage2Ladder Diagram
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Manual 48 pages 50.5 Kb

400-801 specifications

The Lochinvar 400-801 is a high-efficiency commercial boiler that embodies advanced engineering and cutting-edge technology. Designed for a variety of commercial applications, this boiler is known for its reliability, efficiency, and robust performance.

One of the standout features of the Lochinvar 400-801 is its high thermal efficiency, which can reach up to 99%. This efficiency not only reduces fuel consumption but also lowers operating costs, making it an economical choice for businesses seeking to minimize overhead. The boiler employs a stainless steel fire-tube heat exchanger that ensures optimal heat transfer and durability. This construction allows for enhanced resistance to corrosion, thereby extending the boiler's lifespan.

The Lochinvar 400-801 is equipped with advanced control technologies that enhance its performance. With its built-in SMART SYSTEM control, users can easily monitor and manage the boiler’s operations, optimizing performance while ensuring ease of use. This control system features a user-friendly interface that provides real-time data, including temperature settings, pressure readings, and operational status, allowing for quick diagnostics and efficient troubleshooting.

Safety is paramount in the design of the Lochinvar 400-801. The boiler includes a comprehensive safety system that incorporates multiple safety interlocks and a venting system that prevents backflow and ensures safe exhaust. Moreover, the unit is designed to operate with minimal noise, making it suitable for environments where noise reduction is crucial.

Installation and maintenance of the Lochinvar 400-801 are straightforward, thanks to its compact design and multiple venting options. The low-profile construction allows for flexibility in placement, making it an ideal fit for tight spaces. Maintenance tasks are simplified with accessible components, minimizing downtime and ensuring the system operates efficiently over its lifespan.

In conclusion, the Lochinvar 400-801 stands out in the commercial boiler market with its blend of efficiency, reliability, and innovation. With its advanced technologies and features, businesses can achieve significant energy savings while ensuring comfortable and consistent heat for various applications. The Lochinvar 400-801 is an investment in quality and performance, backed by a well-established brand in the heating industry. Whether for a new installation or a replacement, this boiler offers a comprehensive solution for commercial heating needs.
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