Installation / Operation Instruction Manual

02/04/2021 14 BI810
SYSTEM SETUP:
SETUP / FAULTS:
SET POINT: When operating this boiler in NON-outdoor reset mode (outdoor sensor not connected
upon power-up), this value is the fixed set point output water temperature the boiler will try and achieve
and maintain upon an active thermostat heat call.
o RANGE 40°F – 195°F
o Default from factory is 155°F
0 – 10VDC: If an external controller (EX: Automated Building System Management Controller) will be
used to operate this boiler with a 0 – 10VDC control signal, this set up parameter must be set to “YES”.
o Options are “YES” / “NO”
o Factory default is “NO”
o If set to “YES”, boiler will still need a switch closure between R & W upon 0 – 10VDC
heat demand
o If set to “YES”, all Laars Boiler temperature sensing will be disabled
o After you change the set up to 0-10VDC you must initiate a micro reset from the control
panel or cycle control power to the board.
o If the change is successful you will see 0-10VDC in the mode section of the display.
WARNING
There is no temperature sensing, no control, etc. in this mode. It is the technician’s
responsibility to manually control the water temperature.
STAGE SEQ MINS: This option allows the user to delay the boiler stage up sequence.
EX: If it is determined that the boiler must not reach full output for 1 hour and boiler has 10
stages. You would set this variable to 6. This would indicate that the boiler can only add another
stage of heat every 6 minutes. This timer is only used upon an initial heat demand. Once at full
output (timer expired), it will not be reset until the next thermostat heat call.
o Factory is 1 minute