SECTION L CONTROLS
WARNING:
WARNING:
CAUTION:
CAUTION:
Installation, adjustment and service of boiler controls including timing of various operating functions must be performed by a qualified installer, service agency or the gas supplier. Failure to do so may result in control damage, boiler malfunction, property damage, personal injury, or death.
Turn off the power to the boiler before installation, adjustment or service of the Central Point Wiring board or any boiler controls. Failure to do so may result in board damage, boiler malfunction, property damage, personal injury, or death.
This appliance has provisions to be connected to more than one (1) supply source. To reduce the risk of electric shock, disconnect all such connections before servicing.
Risk of electric shock. More than one (1) disconnect switch may be required to
CENTRAL POINT WIRING (CPW)
Central Point Wiring is an advanced control integration technique that provides complete boiler diagnostic capability and greatly simplifies troubleshooting. At the heart of CPW is the Operations Status Center, which is comprised of two different circuit boards: the CPW board and one or more
THE CPW BOARD
The Central Point Wiring (CPW) board serves as the central tie point for connecting all other control components in the boiler. The CPW board provides boiler operating status and fault indication using eight LEDs which function as described in Table
Table
Light | Color | Indication |
Power | Green | 24 VDC is applied to the system |
System Error | Red | Overload current on the board. Board is disabled. |
Pump | Green | Boiler Pump is energized. |
Pilot | Yellow | Power applied to the Pilot Gas Valve. (PV signal on.) |
Main Gas | Green | Power applied to Main Gas Valve. (MV signal on.) |
Call for Heat | Green | Thermostat is closed. Call for heat present. |
Service | Red (Flashing) | One or more of the safeties are open. Refer to |
Blower | Green | Blower is energized. |
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