GRUNDFOS
INSTRUCTIONS
www.grundfos.co.uk
Page 18 of 35
9.2
Electrical power connections
The
FireSAFE
unit requires fitting with a suitable flame retardant power cable.
The power cable must be wired into a suitable lockable isolator switch to provide the power to
the system and to the Mains In terminals in the below PCB layout.
9.3 Digital input and output connections
The digital inputs and outputs require connecting as per the following:
Figure 9
– PCB layout for Digital Input/output connections (shown inside of the Controller)
1 x M12 cable glands is provided in the Controller box for either of the two possible digital
inputs. (Another is supplied in the document package if required)
Digital Outputs for:
D01 - Fault
(OUT1)
D02 - Low Water level Warning
(OUT2)
D03 - Fire Alarm
(OUT3)
Digital Inputs for:
DI2 - Low Water level
(IN2)
DI3 - Flow switch
(IN3)
