Manuals / Lochinvar / Household Appliance / Boiler

Lochinvar 1, 000 Table S, Temperature Adjustment, Default Values Pre-programmed in the Excel

Models: 000 000 through 2 1

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is unique to each Excel 10 and must be placed into the network of an energy management system so that the Excel 10 can be recognized by the system. NOTE: If the Excel 10 is ever replaced, a tear-off label on the new Excel 10 must be placed over this label on the back of the unit for easy reference.

The Excel 10 may have values for the control points specified at the time the control is configured at the factory. If exact control settings are not specified at the time an appliance is ordered, the Excel 10 controller will be pre-programmed with the following default values as shipped from the factory. Special arrangements should be made with the factory during the ordering process to have job site specific values programmed into the control. These values are different for boiler and water heater applications.

TABLE - S

Default Values

Pre-programmed in the Excel 10

To Activate the Manual Override:

1. In the event of a failure of the primary control, move the

“Stop/Run” switch on the front of the control panel to “Stop”.

2. Move the toggle switch, located on the back of the unit to

“Manual Override”.

3. If the bypass valve does not modulate under the control of the

manual override thermostat, it will be necessary to manually to

set the bypass valve to deliver a minimum 140°F water

temperature to the primary heat exchanger following the

procedure below:

a. Disconnect the bypass valve’s 3-pin wire harness from its

connection in the junction box on the upper left of the rear

of the appliance.

b. If the Excel 10 readout function is still active, check the

“Return/In Temp” for a return water temperature the unit

might see in regular operation.

c. Press the “Down” or “Up” arrow key to find the “Bypass

Temp” readout.

Point

_______________

Setpoint Temp

_______________

O.A. Lockout

_______________

O.A. Max

_______________

O.A. Min

_______________

Max Setpoint

_______________

Min. Setpoint

_______________

Operating Sensor

_______________

Heater I.D.

Boiler

_______________

130.0°F

_______________

70.0°F

_______________

60.0°F

_______________

10.0°F

_______________

220.0°F

_______________

100.0°F

_______________

Return/Inlet

_______________

Boiler

Water Heater

_______________

120.0°F

_______________

N/A

_______________

N/A

_______________

N/A

_______________

190.0°F

_______________

50.0°F

_______________

Return/Inlet

_______________

Water Heater

d. Fire the unit with the manual override control. As the unit

reaches a steady state operation, depress the clutch

mechanism and turn the handle slowly counterclockwise to

open the bypass valve to a point at which the “Bypass

Temp” is 140°F.

e. Release the clutch and leave the valve in this position until

the primary control can be replaced. Do not reconnect the

3-pin bypass wire harness.

To Return to the Primary Control:

1.

After the replacement primary control is installed, reconnect

 

the 3-pin bypass wire harness.

2.

Move the toggle switch to “Primary Control”.

MANUAL OVERRIDE CONTROL

This unit is trimmed with an auxiliary thermostat to provide a manual override in the event of a failure of the Sequencer Control or the Excel 10. When the manual override is activated, it will provide temporary control until a replacement Sequencer or Excel 10 can be installed.

The manual override fires the appliance at 100% Btu/hr input rate during the entire cycle. Modulating burner control is not available with the manual override. In addition, the pump will run continuously. Intermittent pump operation is not available with the manual override.

Modulation of the bypass valve may not be available with the manual override. If the primary control failure is in a remote Sequencer, the bypass valve should modulate. If the Excel 10 inside the appliance has failed, the bypass valve may not modulate.

The manual override is located on the back of the appliance below the bypass piping loop. To the left of the thermostat is a toggle switch to alternate the control of the appliance from the primary control to the manual override thermostat.

Some models may have a reduced firing rate when manual override is activated.

3.

Turn the manual override thermostat to the lowest setting.

4.

Move the “Stop/Run” switch to “Run”.

If you have any questions or comments, please call the Lochinvar Technical Product Service Line at 1-800-722-2101.

TEMPERATURE ADJUSTMENT

COMMAND DISPLAY

FIG. 54 Command Display Panel

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Lochinvar 1 Table S, Temperature Adjustment, Default Values Pre-programmed in the Excel, To Activate the Manual Override
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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.