Lochinvar 151-286 Field wiring, Installation must comply with, Line voltage connections

Page 28

Outdoor Knight Boiler Installation & Operation Manual

5 Field wiring

￿WARNING

NOTICE

NOTICE

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.

All wiring exterior to the appliance must be enclosed in approved conduit.

In accordance with Section 303 of the 2007 Energy Act, this boiler is equipped with a feature that saves energy by reducing the boiler water temperature as the heating load decreases. This feature is equipped with an override, which is provided primarily to permit the use of an external energy management system that serves the same function. This override MUST NOT be used unless at least one of the following conditions is true:

1.An external energy management system is installed that reduces the boiler water temperature as the heating load decreases.

2.This boiler is not used for any space heating.

3.This boiler is part of a modular or multiple boiler system having a total input of 300,000 Btu/hr or greater.

4.This boiler is equipped with a tankless coil.

￿CAUTION 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.The boiler pump is shipped loose. Wire the boiler pump as shown in FIG. 5-1.

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

5.To activate a system pump, wire as shown in FIG. 5-1. If the motor is larger than 1/8 hp or 1.8 amps, you must isolate with a relay.

Low voltage connections

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 low voltage connection board as shown in FIG. 5-3 on page 31 of this manual and the boiler wiring diagram.

Figure 5-2Routing Field Wiring

Figure 5-1Line Voltage Field Wiring Connections

LOW VOLTAGE

CONNECTION

BOARD

LOW VOLTAGE

WIRING

KNOCKOUTS

LINE VOLTAGE

 

 

IMG00386

 

WIRING KNOCKOUTS

 

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Contents Save this manual for future reference Contents When servicing boiler Please read before proceedingOutdoor Knight Boiler How it works Stainless steel heat exchangerModels 151 Model Ratings Outdoor Knight Boiler Ahri RatingDetermine boiler location Installation must comply withBefore locating the boiler, check Outdoor vent / air intake location Flooring and foundation Provide clearancesPrevent combustion air contamination Remove boiler from wood pallet Prepare boilerGas conversions Leveling the boiler 286Hydronic piping Near boiler piping components System temperature sensor Near boiler piping connectionsCirculator sizing Indirect water heatersFeet PressureModel Minimum Pipe Pump Size GrundfosSmart System / Multi-temperature loop control option Variable speed pump setupVariable speed pump option UP26-96 FC/VS IFC VS Stratos 1.25 3 xZone #1 Number of Units Model Required Pipe Sizes 6Single Boiler Multiple Temperatures 151 211 286 IMG00374 Number of Units 10Multiple Boilers Non-Zoned Primary/Secondary Piping Connecting gas supply piping Gas connectionsNatural gas Propane GasCheck inlet gas supply Single Unit Natural Gas Pipe Capacity ChartLength of Pipe in Straight Feet for 1/2 PSI Gas 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 Runtime contacts Alarm contactsWiring of the cascade System supply sensor3Low 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 boiler2Operating Instructions Set space heating operation Natural Gas PropaneConfiguration of the cascade Verify DHW modeSet domestic hot water DHW operation Operating information GeneralHow the boiler operates How the control module operatesTemperature control Protection featuresBoiler temperature regulation Outdoor reset operation CascadeSequence of operation Operation DisplayStandby, ready to start a new cycle Access modes InstallerOutdoor Knight boiler control module UserCall for Heat Operating 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 Check flame signalCleaning boiler heat exchanger Review with ownerOiled bearing circulators Model Kit Part Component Number DescriptionDiagrams PC Interface120 VAC High Voltage

151-286 specifications

Lochinvar 151-286 is a high-efficiency water heater designed for both residential and commercial applications. This model stands out due to its advanced technology, user-friendly controls, and robust construction, making it a reliable choice for those seeking to optimize their hot water supply.

One of the key features of the Lochinvar 151-286 is its impressive heating capacity. With a maximum input of 286,000 BTU/hr, it can efficiently meet hot water demands for a variety of settings, including hotels, restaurants, and other commercial facilities. This substantial output ensures that even during peak usage hours, hot water availability is maximized, reducing wait times and enhancing customer satisfaction.

The water heater utilizes a state-of-the-art condensing technology that maximizes efficiency by capturing and utilizing flue gas heat. This process allows the Lochinvar 151-286 to achieve an impressive thermal efficiency rating of up to 98%. The benefit of such high efficiency translates to significant energy savings and reduced operational costs over time, making it an environmentally friendly option as well.

The Lochinvar 151-286 is equipped with a user-friendly control system featuring advanced microprocessor controls. These controls allow for precise temperature management and monitoring, enabling users to set optimal temperatures according to their specific needs. Additionally, the heater includes built-in diagnostics, allowing for easy troubleshooting and maintenance, which minimizes downtime and extends the life of the unit.

Another standout characteristic of the Lochinvar 151-286 is its durable construction. Built with high-quality materials, including a robust stainless steel heat exchanger, this model is designed to withstand the rigors of daily use. The unit also features a compact design, which facilitates easy installation in various locations, whether it be in a utility closet or alongside existing equipment.

Safety features are paramount in the Lochinvar 151-286, with multiple safeguards in place to protect against overheating and other potential issues. The unit is designed to operate reliably, ensuring peace of mind for users who depend on consistent hot water availability.

In summary, the Lochinvar 151-286 water heater combines high capacity, exceptional efficiency, and user-friendly technology, making it an excellent choice for those seeking reliable hot water solutions. Its advanced features deliver performance and durability that stand out in the competitive market of water heating systems.