Evoqua WALLACE & TIERNAN GMS PLUS, Original Instruction Manual, Page: 44 / 116

44
WT.050.455.000.DE.IM.0319
Installation
GMS
plus
5.
Terminal box 6 If necessary, install a terminal box above the sensor.
Please note
The terminal box must be splash-proof.
7 Lay a two-core shielded cable from the terminal box to the
GMS
plus .
5.2.2 Installing battery supply (optional)
Requirements on
the environment
The following must be observed when installing the battery supply:
• The battery supply must be protected against rain, frost and
direct sunlight and may not be installed outdoors.
• Install the battery supply right beside the GMS plus .
• It must be mounted horizontally on a wall in a frost-free room
with an ambient temperature of 0 – 45 °C. Cable terminal
screws down.
• The air in the room should be non-condensing.
Please note
The battery supply voltage is designed for 98 – 265 V AC
(47 – 63 Hz).
The output voltage is 24 V DC. Only applicable with a 24 V gas
monitoring system GMS
plus .
Proceed as follows:
1 First electrically install the GMS plus .
2 Then plug the connecting cable into the GMS plus .
Please note
The connecting cable to the GMS plus is 1.5 m and may not be
extended.
Battery supply voltage The GMS plus is initially supplied with 24 V from the battery supply
during commissioning if power has been applied to the battery
supply.
Please note
The connecting plug to the battery module must be removed in
advance of repair on or replacement of the GMS PCB to ensure it
does not carry any voltage.