Setpoint Temp — This is the lowest boiler operating temperature that the boiler will maintain when the outside air temperature is at the O.A. Max. This setting is a Changeable Point from the Command Display.

Calculated Set Point — The water temperature as adjusted by the optional outdoor air reset function used on a heating boiler only. If no outdoor reset function is used, this displays the same temperature as the set point. The Outdoor Air Reset function is not available on a water heater application.

These functions are shown in the screens of the Command Display. Where noted, these settings are changeable from the Command Display to configure boiler operation to the building heat load and weather conditions in a specific geographic area.

MULTIPLE APPLIANCE

INSTALLATIONS

SEQUENCING BOX

(MULTI-BOILER)

REMOTE DISPLAY MOUNTING

CLOSED VIEW

COMPONENT

 

LOCATIONS

FIG. 58 Sequencer Control Panel

SEQUENCING OPTIONS

The sequencer is supplied as a separate control enclosure that is connected to the multiple appliances via an E-bus connector on the rear of the appliance. The sequencer comes mounted in an enclosure that requires a field installed 24 VAC power source. An optional enclosure with a sub base and 24 VAC power supply is available to allow remote mounting of a Command Display adjacent to the sequencer. Multiple sequencing options are available. The specific software programming required to sequence multiple boilers must be specified at the time the appliances are ordered. The sequencing options are used to control how multiple boilers or water heaters are cycled to meet system demand. The sequencing options are programmed into an Excel 10 controller at the factory based on the number of selectable sequencing algorithms ordered. The desired method of sequencing multiple boilers or water heaters may be selected from the screen of the Command Display. There are up to five sequencing options that are selectable from the Command Display, based on the sequencing package purchased.

NOTE:

Separate sequencers are required to control multiple boilers and water heaters.

1.First On - First Off — This is a lead/lag control functionality. The sequencing of the boilers or water heaters is based on the total loop load with

added units

being

brought

on

when

the units

that are running are at 100% and

the loop

load is

not

being

met. Boilers

or water

heaters

are

turned

off

when

the

loop

load

falls

and

the first boiler or

water heater on is at minimum load.

2.First On - Last Off — This is a simple first on/last off without rotation of the lead boiler or water heater.

3.Efficiency Optimized — The lead/lag will be based on first on/first off lead/lag. The overall efficiency will be optimized to run the boilers or water heaters at their highest efficiency. Highest efficiency occurs at the minimum loading for each boiler or water heater. Therefore, this option will add boilers or water heaters when the load reaches a

point where the next boiler or water heater can run at minimum load.

4.Efficiency Optimized with Time Equalization —

This is the same as “Efficiency Optimized” but the lead/lag is based on boiler or water heater run times. The boilers or water heaters will be sequenced to equalize run times to within approximately a 24 hour time period. If no opportunity is given to cycle, the control will not interrupt action to equalize runtime.

5.None — This is the default for any boiler or water heater control which has not purchased one of the Sequencing Option Packages.

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Lochinvar 1, 000 through 2 warranty Multiple Appliance Installations, Efficiency Optimized with Time Equalization
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000, 000 through 2, 1 specifications

Lochinvar 1 is a remarkable achievement in the realm of modern technology and engineering. As a powerful and efficient water heater, it has been designed to cater to a wide range of residential and commercial needs. One of the standout features of Lochinvar 1 is its advanced heating technology, which incorporates a high-efficiency condensing design. This technology allows the unit to achieve impressive energy savings by maximizing heat transfer while minimizing energy consumption.

The Lochinvar 1 utilizes a stainless steel heat exchanger that enhances durability and corrosion resistance. This not only extends the lifespan of the unit but also ensures consistent performance over time. Coupled with a user-friendly control system, users can easily adjust settings and monitor performance, enhancing overall convenience and usability.

Another key characteristic of the Lochinvar 1 is its compact design, making it suitable for a variety of installation environments. Whether in a residential basement or a commercial utility room, the unit’s space-saving configuration allows for efficient use of available area without compromising on capability.

Safety features are integral to the Lochinvar 1, providing peace of mind for users. The unit is equipped with advanced monitoring systems that can detect irregularities and automatically shut down the system if necessary. This not only protects the equipment but also enhances the safety of the environment in which it operates.

In terms of performance, Lochinvar 1 boasts a high recovery rate, ensuring hot water is available on demand. This is particularly beneficial for settings with high water usage, allowing simultaneous operations without lag.

Moreover, the unit supports various venting options, offering flexibility during installation. Whether using traditional vertical venting or innovations like direct venting, Lochinvar 1 accommodates different building designs and local codes, making it highly versatile.

In conclusion, Lochinvar 1 epitomizes the melding of efficiency, reliability, and user-friendly technology. With its high-performance features, robust safety systems, and adaptable installation options, it stands out as a forefront player in the water heating industry, meeting the diverse needs of today's consumers and businesses alike.
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