Tornatech HFD - Energy Consumption; Sizing; Incoming Power Connections; Circuit Protection

8
Energy Consumption
Diesel Controller with boost charger
Model / State
220/
240VAC
VDC Output
12VDC / @
No charge
1.0A
13.8V
12VDC / @
Full charge*
4A
24VDC / @
No charge
0.5A
27.6V
24VDC / @
Full charge**
6A
*12 amps through each battery
**10 amps through each battery
Sizing
Wiring between controller and engine (terminals 1,9,10,12) must be stranded #10AWG as minimum.
Wiring between controller and engine (terminals 6,8,11) must be stranded #8AWG as minimum.
Power supply wiring must be stranded #14 AWG as minimum.
Incoming power supply terminals are sized for #16 to #6 AWG wire.
Incoming Power Connections
Diesel engine driven fire pump controllers shall be powered by a dedicated source protected by a fuse or circuit
breaker. Verify the label on the cabinet to select the correct protection. Always follow this procedure when
connecting or disconnecting the controller: Connect both batteries before connecting the AC power. Disconnect the
AC power before disconnecting the batteries. Disconnecting the batteries while the AC is connected may result in
severe damage to the controller electronic boards.
Circuit protection
CB1 protects battery charger 1 and CB2 protects battery charger 2. CB3 protects the control circuit from battery 1
and CB4 protects the control circuit from battery 2.
Always follow this procedure when connecting or disconnecting the controller: Connect both batteries before
connecting the AC power. Disconnect the AC power before disconnecting the batteries.