Hydronic Heating Boilers and

Domestic Water Heaters

OPERATION Continued

TABLE-Q

Adjust Menu Settings for Operating Modes

Mode 1

Mode 1

Mode 2

Mode 3

(no outdoor sensor)

(outdoor sensor)

STG MODE (**Models 650 - 990)

STG MODE (**Models 650 - 990) STG MODE (**Models 650 - 990)STG MODE(**Models 650 - 990)

*BOIL MAX

OUTDR START

*BOIL MAX

*BOIL MAX

*SEn (no system sensor)

OUTDR DSGN

Set point TARGET 1

*ΔT MIN

Set point TARGET 1

BOIL START

DIFF 1

*ΔT MAX

DIFF 1

BOIL DSGN

Set point TARGET 2

units

Set point TARGET 2

WWSD

DIFF 2

 

DIFF 2

*BOIL MAX

Set point TARGET 3

 

Set point TARGET 3

*BOIL MIN

DIFF 3

 

DIFF 3

*BOIL MASS

Set point TARGET 4 (** Models 1260 - 2070 only)

Set point TARGET 4 (** Models 1260 - 2070 only) BOIL DIFF

DIFF 4

 

DIFF 4

Set point TARGET

*STG DLY

 

*STG DLY

*ΔT MIN

*ΔT MIN

 

*ΔT MIN

*ΔT MAX

*ΔT MAX

 

*ΔT MAX

units

units

 

units

Note: * indicates the setting is only available in the advanced access level ** units listed in KBtu

TABLE-R

View Menu Information

Menu Description

STG MODE Stage Mode

OUTDR Outdoor air temperature

BOIL TARGET Boiler target temp during outdoor

reset operation

BOIL SUP Actual system sensor temp

BOIL OUT Actual boiler supply water temp

BOIL IN Actual boiler return water temp

BOIL ΔT Temp difference between supply and return

TANK Actual tank temp

BOIL ON Accumulated runtime of boiler (up to 999 hours, then resets to 0)

Adjust Menu Setting Descriptions

BOIL MAX

Maximum boiler target supply temperature [either 200°F (93°C) or 250°F (121°C)].

SEn

Select whether staging is based on the boiler inlet or outlet sensor.

Set Point TARGET (1, 2, 3, or 4)

Temperature set point target for stages 1, 2, 3, or 4. Typically, users set the four different stages a few degrees apart. This allows segments of the heater to come on as the temperature drops.

DIFF (1, 2, 3, or 4)

Temperature differential for stages 1, 2, 3, or 4.

STG DLY

Stage delays can be set as follows:

Btu/hr Input

Stages

399,999 - 500,000

1 and 2

650,000 - 750,000

1,2 and 3

990,000

1,2 and 3 or 1,3 and 2

1,260,000 - 2,070,000

1,2 and 3,4 or 1,3 and 2,4

ΔT MIN

Set temperature at which purging stops.

ΔT MAX

Set temperature at which ΔT Max Error Code is generated.

UNITS

Set temperature reading at either °F or °C.

OUTDR START

Outdoor starting temperature.

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Lochinvar 399, 999 - 750 Adjust Menu Setting Descriptions, Table-Q, Adjust Menu Settings for Operating Modes, Table-R
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399, CF-CH(E)-i&s-08, 999 - 750 specifications

Lochinvar 999 - 750, CF-CH(E)-i&s-08,399 is a cutting-edge boiler designed for commercial heating applications. With its robust construction and high efficiency, this model stands out in the crowded market of heating solutions.

One of the main features of the Lochinvar 999 - 750 is its exceptional thermal efficiency rating. The unit incorporates advanced condensing technology that allows it to recover heat from flue gases, which helps in achieving efficiency levels of up to 99%. This efficiency not only reduces energy consumption but also lowers operational costs, making it an excellent investment for businesses looking to minimize their carbon footprint.

The boiler is designed to provide a powerful output of 750 kW, ensuring it meets the heating demands of larger buildings or commercial spaces. Its capacity makes it suitable for a range of applications including schools, hospitals, and industrial facilities. Moreover, the unit features a built-in cascading system that enables multiple boilers to be connected, enhancing system reliability and flexibility.

In terms of technology, the Lochinvar 999 - 750 is equipped with a user-friendly touchscreen interface. This innovative control system allows operators to monitor and adjust settings with ease, providing real-time performance data and alerts for maintenance needs. The intelligent controls optimize operation to match the heating load, further enhancing energy efficiency.

Safety is a top priority with this model. It is built with multiple safety features such as automatic shut-off valves, pressure relief valves, and flame monitoring systems, ensuring safe operation under various conditions. The unit also adheres to stringent industry standards and regulations, making it a reliable choice for commercial applications.

Furthermore, the Lochinvar 999 - 750 is designed with serviceability in mind. Its compact footprint and accessible components simplify maintenance, reducing downtime and associated costs. The unit also supports a variety of fuel sources, including natural gas, propane, and biodiesel, providing flexibility to meet different facility requirements.

In summary, the Lochinvar 999 - 750, CF-CH(E)-i&s-08,399 represents a blend of efficiency, reliability, and safety in commercial heating. Its advanced technologies and thoughtful design make it a powerful solution for various heating needs, making it an ideal choice for businesses aiming for excellence in energy management and operational efficiency.
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