Installation / Operation Instruction Manual

02/04/2021 25 BI810
Pre-Start
General inspection – inspect all components, external and internal to assure there has been no damage
during shipment or installation. Verify proper cabinet clearances on both sides and top and the internal is
free of construction dirt and debris. Blowing out with an air hose is suggested. Verify all electrical
connections are properly tightened and correct.
 It is assumed the system is purged and water filled prior to attempting the following paragraphs
(see System Flush/Boil-Out and Water Treatment).
Main unit inside panel “door switch” – the inside dead front panel must be secured before the element
power contactors are energized. This door switch is on the upper left inside cabinet flange.
Condition control board to hardware STANDBY – either remove one LMC blue wire or jumper
common to SB SW tab (this is a pre-start process).
Control power on – close the control box upper left 120 CB. The control board green LED should be
on, see the Operations section for definition of other LED’s. There should not be an alarm.
LWCO – should be in normal or non-reset mode, red LED on.
 If not, display will indicated “LWCO open” and LWCO board LED is off.
 Verify system is water filled, no air at vessel top, etc.
 Reset at the board, right center pushbutton
Control device or mode – with power now on the control board, the procedure from the previous control
programming section can easily be run. .
Reestablish non-standby – turn off the control box 120 CB. Reference 3
rd
paragraph under this section,
return LMC blue wire loop or remove SB SW jumper/switch.
Observations
Become familiar with the main PCB module.
LEDs
 Green – control power, control 120 CB on, proper fuse, 24-volt transformer
 Red-W – operating thermostat on, R to W closed
 Red-SYS – control 24VAC at J3-8 going to seq. J3-8 (via auto-reset HL)
Control box 120 CB – general service panel control circuit source.
Audible alarm – continuous alarm indicates a manual reset required.
Staging CB’s, main unit – one per element stage, interrupts power from the power distribution block.
Main unit, monitor lights – indicates element contactor is active. This is one per stage or power
contactor.
LWCO control – red LED on indicates proper vessel water level.