WhisperGen PPS16 Installation and Commissioning Manual Rev: 080801
14
7.3 Control system connection points
7.3.1
Primary
coolant
pump
The power to the primary coolant pump terminals is supplied directly from
the alternator of the WhisperGen. The pump will continue to run if the
WhisperGen is running, and is disconnected from the batteries.
The WhisperGen turns on the water pump when it is started and turns it off
when it is stopped and has cooled down.
The primary coolant pump shall be connected to terminals 18- and 19+. See
Figure 8
: Wiring diagram.
7.3.2
The Auxiliary DC Output
Warning:
The primary coolant pump
shall
not
be connected to
terminal 14- and terminal 15+.
Warning:
The combined current output from both the Auxiliary Power
Output and the Ext PWM Output, shall not exceed 12A.
The WhisperGen has an auxiliary DC output, at battery voltage, to provide
power to any other auxiliary equipment which is required to be switched by
the WhisperGen.
Auxiliary power is available only when the WhisperGen is starting, running or
stopping.
The Auxiliary DC output shall be connected to terminals 14- and terminal
15+. See
Figure 8
: Wiring diagram.
7.3.3
Secondary Coolant Pump
Warning:
Do not use relays in this circuit.
A DC PWM output from the WhisperGen enables the WhisperGen to control
the operating temperature of the system. It shall be connected to:
●
the secondary coolant pump for marine systems; or
●
the heat dump fan or land based systems.
The PWM output terminals are 12- and 13+ on the wiring block.
See
Figure 8
: Wiring diagram.
7.3.4
External Digital In
Warning:
Do not apply voltage across these terminals.
These inputs allow the WhisperGen to be turned on and off by an external
set of contacts. The contacts can be a switch, thermostat, timer or some
other device which starts and stops the WhisperGen. The contacts shall be
physical or ‘dry contacts’.
The EXT Digital In input terminals are 5+ and 6- of the wiring block.
See
Figure 8
: Wiring diagram.
