Pressing the Back key will return you to the Heat Source display. The up and down arrow keys can be used to scroll the cursor up and down to the various heat sources (boilers or water heaters) at this location. To the right of each heat source displays the operational status of the individual appliance. Pressing the Select key when the cursor is on a specific heat source displays the parameters for this boiler or water heater. Pressing the Change softkey takes you to a screen displaying the six adjustable points for the boiler or water heater. Use the up and down arrow keys to move the cursor to each point. Use the + and - softkeys to adjust the setting pressing Select softkey to enter the revised setting into memory. Pressing the Back button will return you to the screen displaying the parameters for this Boiler or Water Heater. Pressing the Back button will return you to screen displaying the Heat Source(s) and the presence of an Optional Sequencer, if equipped.

FIG. 57 Command Display Data Screen

OUTDOOR RESET FUNCTION

SELECTIONS

(Optional on Heating Boilers Only)

As an option, the Excel 10 control may be equipped with an outdoor reset function. This function uses a sensor to measure the outdoor temperature and automatically adjust the boiler set point temperature to compensate for colder outdoor temperatures. O.A. Min, Max, SetPoint and Setpoint Temp are changeable points from the Command Display. The additional values required by the Excel 10 to properly operate the reset function should be specified at the time a boiler is ordered. If specific settings are not available the default values will be programmed into the Excel 10 at the factory. The operating parameters for the reset function are:

O.A. Lockout — The maximum outdoor air temperature where the boiler will continue to operate. When the outdoor temperature rises above this setting, no heat should be needed for the building and the boiler will lockout and not fire. The default setting if not specified is 70.0°F (21.1°C). This setting should be specified at the time the boiler is ordered.

O.A. Max — The warmest outdoor air temperature where the boiler reset function will begin to function and operate the boiler at the initial set point temperature. The boiler set point will increase based on a corresponding drop in outdoor temperature below this temperature. The default setting if not specified is 60.0°F (15.6°C).

O.A. Min — The coldest outdoor air temperature where the boiler reset function will reach a maximum boiler water temperature (Max. SetPoint). No additional reset (increase) in boiler temperature will occur past this point as outdoor temperature continues to drop lower. The default setting if not specified is 10.0°F (-12.2°C). This setting is a Changeable Point from the Command Display.

O.A. Temp. — A display of the outdoor air temperature as sensed by the outdoor air sensor.

Max. SetPoint — The maximum water temperature that the boiler or water heater may be set to operate at. The default setting if not specified is 220.0°F (104.4°C). This setting is a Changeable Point from the Command Display.

 

TABLE - V

 

Status Point Alarm Modes:

 

 

Low H2O Flow:

Low water or flow condition exists.

_________________________________________________________________________________________________________

Low Air Press:

Low air condition exists.

_________________________________________________________________________________________________________

Block Drain:

Blocked condensate drain exists.

_________________________________________________________________________________________________________

Block Flue:

Blocked flue or louver proving switch failed to prove.

_________________________________________________________________________________________________________

Gas Press Fail:

Low or high gas pressure condition exists.

_________________________________________________________________________________________________________

Flame Fail:

Hard lockout on a flame failure signaled from the ignition control.

_________________________________________________________________________________________________________

Soft Lockout:

Wait period for the ignition control to recover from soft lockout conditions.

_________________________________________________________________________________________________________

Over Temp:

Indicates that a higher than programmed temperature has been reached.

 

 

44

Page 43 Page 45
Page 44
Image 44
Lochinvar 1, 000 through 2 warranty Outdoor Reset Function Selections, Optional on Heating Boilers Only
Page 43 Page 45

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.
Top Page Image Contents