Справочник Пользователя для Lochinvar 000 - 500
Set Point
The Set Point knob specifies the target outlet water
temperature in degrees, Fahrenheit. After the water
temperature reaches the set point, the temperature control
shuts off the burners.
The Set Point knob specifies the target outlet water
temperature in degrees, Fahrenheit. After the water
temperature reaches the set point, the temperature control
shuts off the burners.
Differential
The Differential specifies the number of degrees below the
set point that the control will allow the water temperature
to drop before it brings the unit back on again.
The Differential specifies the number of degrees below the
set point that the control will allow the water temperature
to drop before it brings the unit back on again.
High-Fire Offset
The temperature control operates a two-stage firing system.
The two stages are High-Fire and Low-Fire. High-Fire
operates all burners at full rate while Low-Fire operates the
burners at approximately one-half rate.
The temperature control operates a two-stage firing system.
The two stages are High-Fire and Low-Fire. High-Fire
operates all burners at full rate while Low-Fire operates the
burners at approximately one-half rate.
The High-Fire Offset knob specifies the number of degrees
below set point that the High-Fire stage shuts down. At that
point, the unit will continue to operate at the Low-Fire
stage until the set point is reached.
below set point that the High-Fire stage shuts down. At that
point, the unit will continue to operate at the Low-Fire
stage until the set point is reached.
The High-Fire Offset knob has settings between 0°F and
20°F. If set at 0°F, the High-Fire Offset is disabled and the
unit will operate the High-Fire stage until the set point is
reached and the temperature control shuts the unit off.
20°F. If set at 0°F, the High-Fire Offset is disabled and the
unit will operate the High-Fire stage until the set point is
reached and the temperature control shuts the unit off.
No matter what the High-Fire Offset knob is set to, the unit
will light at Low Fire and operate for approximately 10 to
120 seconds before the High-Fire stage actuates.
will light at Low Fire and operate for approximately 10 to
120 seconds before the High-Fire stage actuates.
Boiler Application
Standard boiler units are shipped with one sensor, the inlet
water temperature sensor. An optional sensor can be
purchased and installed for use as a remote system sensor.
Boilers with the outdoor air reset option also have an
outside air temperature sensor.
Standard boiler units are shipped with one sensor, the inlet
water temperature sensor. An optional sensor can be
purchased and installed for use as a remote system sensor.
Boilers with the outdoor air reset option also have an
outside air temperature sensor.
Water Heater Application
Water heater units are shipped with two sensors; the inlet
water temperature sensor and the multi-purpose
temperature sensor to be used as a tank sensor.
Water heater units are shipped with two sensors; the inlet
water temperature sensor and the multi-purpose
temperature sensor to be used as a tank sensor.
Temperature Control Sensors
This is a two-stage temperature control that controls the
burner ignition and pump functions. This temperature
controller can measure up to three different sensor inputs,
depending upon how the unit is set up. They are as follows:
burner ignition and pump functions. This temperature
controller can measure up to three different sensor inputs,
depending upon how the unit is set up. They are as follows:
1. Inlet Water Temperature Sensor
2. Multi-Purpose Temperature Sensor
3. Outside Air Temperature Sensor
Inlet Water Temperature Sensor
This sensor measures the inlet water temperature coming
into the unit.
into the unit.
The inlet water temperature sensor is placed into the inlet
bulbwell on the boiler. This sensor is installed by the
factory in new units.
bulbwell on the boiler. This sensor is installed by the
factory in new units.
Multi-Purpose Temperature Sensor
Depending upon how your unit is set up, this sensor can be
used as a system sensor in a boiler system or a tank sensor
Depending upon how your unit is set up, this sensor can be
used as a system sensor in a boiler system or a tank sensor
for water heater applications. Connect this sensor to the
two blue wires in the upper left-hand corner of the control
panel.
two blue wires in the upper left-hand corner of the control
panel.
Outdoor Air Temperature Sensor
The outside air temperature sensor will only be used for
boiler systems. The outside air sensor is optional. This
sensor allows you to tie boiler operation to the outdoor air
temperature. As outside temperatures drop, the control will
increase the temperature setting of the boiler. As outdoor
temperatures rise, the control will decrease the temperature
to the selected set point of the boiler. You can set the
control to shut the boiler off when a desired outdoor air
temperature level is reached.
The outside air temperature sensor will only be used for
boiler systems. The outside air sensor is optional. This
sensor allows you to tie boiler operation to the outdoor air
temperature. As outside temperatures drop, the control will
increase the temperature setting of the boiler. As outdoor
temperatures rise, the control will decrease the temperature
to the selected set point of the boiler. You can set the
control to shut the boiler off when a desired outdoor air
temperature level is reached.
You must purchase the sensor from the appliance
manufacturer. The sensor comes with a housing that helps
protect the sensor from the elements. Mount the air sensor
housing outdoors, under the eve of the roof. Make sure the
housing is out of direct sunlight. This will ensure that the
sensor will accurately read the true outdoor temperature.
Connect the outdoor air temperature sensor to the terminal
block on the outdoor air reset board. For more information
on wiring the sensor, see Wiring of Remote Sensors, this
page.
manufacturer. The sensor comes with a housing that helps
protect the sensor from the elements. Mount the air sensor
housing outdoors, under the eve of the roof. Make sure the
housing is out of direct sunlight. This will ensure that the
sensor will accurately read the true outdoor temperature.
Connect the outdoor air temperature sensor to the terminal
block on the outdoor air reset board. For more information
on wiring the sensor, see Wiring of Remote Sensors, this
page.
Installation of Remote Sensors
Make sure to insert the sensor all the way into the bulbwell,
leaving no air pocket between the front surface of the
sensor and the back of the bulbwell. Air pockets are
thermally non-conductive and will cause sensors to read
inaccurately.
Make sure to insert the sensor all the way into the bulbwell,
leaving no air pocket between the front surface of the
sensor and the back of the bulbwell. Air pockets are
thermally non-conductive and will cause sensors to read
inaccurately.
System Sensor
The system sensor is used for boiler applications. Install
the sensor in the system supply to the building.
The system sensor is used for boiler applications. Install
the sensor in the system supply to the building.
Tank Sensor
The tank sensor is used in water heating applications.
Install the sensor in a water storage tank to measure water
temperature. For more information on wiring the sensor,
see Wiring of Remote Sensors below.
The tank sensor is used in water heating applications.
Install the sensor in a water storage tank to measure water
temperature. For more information on wiring the sensor,
see Wiring of Remote Sensors below.
Wiring of Remote Sensors
To wire remote sensors, follow the guidelines below. Take
care to correctly wire sensors to the unit. Erratic
temperature readings can be caused by poor wiring
practices. Twist the wires between the unit and the remote
sensor. Turn wires at least three or four turns per linear foot
of wiring. This provides protection against some types of
electrical interferences.
To wire remote sensors, follow the guidelines below. Take
care to correctly wire sensors to the unit. Erratic
temperature readings can be caused by poor wiring
practices. Twist the wires between the unit and the remote
sensor. Turn wires at least three or four turns per linear foot
of wiring. This provides protection against some types of
electrical interferences.
1. Do not route temperature sensor wiring with building
power wiring.
2. Do not locate temperature sensor wiring next to control
contactors.
3. Do not locate temperature sensor wiring near electric
motors.
4. Do not locate temperature sensor wiring near welding
equipment.
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