LAARS LLS-1 - Instruction Manual - Manual (Page 10)

Page 10
LAARS HEATING SYSTEMS
INLET SETPOINT
This is the desired boiler inlet water
temperature.
OPER DIFFERNTL __F
This sets the desired operating temperature
differential.
MAN RESET TEMP ___F
Displays unit’s outlet water temperature.
LOW TEMP WARN ___F
With this setting, you will tell the controller to
alarm when the boiler’s inlet temperature goes below
the temperature selected.
To change a value, select it by hitting the enter
key while the value is displayed. The value will start
to flash. Use the arrow keys to change the value.
When the value you desire is shown, press the enter
key. The value will stop flashing, indicating that the
value has been set. The readout will go back to
Display #1 if left inactive on any display for longer
than thirty (30) seconds.
Display #5 - Boiler Pump
If this menu is selected the following display
will appear.
BOILER PUMP
This is to indicate to the controller whether a
pump has or has not been connected, and how the
user wants the pump controlled.
Use the arrow keys to scroll through the
information, it will appear as follows:
PUMP INSTALLED = YES/NO
This indicates whether or not a pump will be
controlled by the LLS.
RUN CONT/AUTO = AUTO/CONT
When put in constant mode, the pump will run
continuously, regardless of whether or not there is a
call for heat. When put in auto mode, the pump will
start when there is a call for heat, stop when the call
for heat is ended, and extended run time ends, and
will run whenever the outlet temperature sensed is
within 5°F of the outlet water temperature setting, to
avoid nuisance high limit trips.
EXTENDED RUN ___MIN
Extended run is the pump time delay. After a
call for heat is satisfied, if the unit is in auto pump
mode, the pump will keep running for the length of
time entered by the user.
EXERCISE PUMP = NO/YES
If this function is turned on, during long periods
with no boiler/heater use (such as a hydronic boiler
system in the summer), the LLS will run the pump to
minimize the possibility of the pumps seizing up.
EXERCISE FREQ _ DAYS
This tells the controller how often you want the
pump run, if the exercise feature is enabled.
FREEZE PROTECT = ___
If the freeze protection feature is enabled, the
unit’s pump will be energized when the controller
detects inlet water temperature below what the user
has entered. This will keep the water moving through
the boiler to minimize the possibility of freezing.
Note that this will not protect the boiler if there is a
loss of electrical power to the unit, or if a prolonged
period of freezing temperatures occurs.
FREEZE PROTECT @ __F
This is the temperature at which the user wants
the freeze protection option to turn on.
To change a value select it by hitting the enter
key, the value will start to flash. Use the arrow keys
to change the value, when finished hit the enter key,
the value will stop flashing. The readout will go back
to Display #1 if left inactive on any display for longer
than thirty (30) seconds.
Display #6 - DHW Settings
If this menu is selected the following display
will appear.
DHW SETTINGS
IMPORTANT NOTE: The DHW (Domestic
Hot Water) connection on the LLS is only for the
Laars DHW sensor. Standard tank aquastats
must be connected to the LLS field interlock.
These Domestic Hot Water settings are only used
if the Laars DHW sensor is controlling tank
temperature.
Use the arrow keys to scroll through the
information, it will appear as follows:
DHW OPERATION ON _ OFF _
This tells the LLS controller that the Laars
DHW sensor is being used
DHW SETPOINT ___F
This sets the domestic water temperature, and is
measured at the DHW sensor.
OUT OF
PRODUCTION