6. Route battery leads at least 0.25" from all other
cabling.
The series connection described provides the 24 V standby voltage required by the XT+. Do not connect the
two batteries in parallel. A parallel connection will not provide the 24 V required for operating the unit in a
standby condition.
The battery connections can be made while AC power on or off. If AC power is off, the battery connection will
not be recognized (and the unit will remain unpowered) until AC is restored. Once AC power is on and the
batteries are connected, examine the LED Status Indicators on the power supply:
l
Confirm that the AC NORMAL and DC OUT ON indicators are both illuminated, and the
HEARTBEAT indicator is blinking yellow.
l
Confirm that BATTERY DISCON is off. If it is on, recheck the battery connections and test or replace
the batteries.
l
Wait 3 minutes and confirm that no trouble indicators are illuminated.
Using a volt meter, measure the voltage across each battery separately. Typically, the voltage of each battery
will measure 12.0 to 14.5 volts depending on the level of charge. Voltages below 12.0 are possible if the
battery is severely discharged. Compare the two battery voltages. A difference of more than 1 volt may
indicate a problem with the batteries.
Connecting Field Wiring
Because the fascia is hinged, route all wiring to the left as shown, so that the fascia can be opened without
disconnecting the wiring. Power-limited conductors must be installed using Types FPL, FPLR, FPLP, or
equivalent cables. When connecting field wiring, separate high and low voltage wiring in the enclosure with a
minimum gap of 0.25".
All circuits are power-limited except AC power lines and battery leads.
WARNING!
Do not route low voltage cabling through the same conduit as AC lines. AC power lines should be
threaded through a dedicated conduit. Refer to the following illustration when connecting any wiring.
VES Fire Detection Systems
XT+ Releasing Control Unit Installation Manual
Version 1.00 | December 2018 | MAN-1252VES
Page 24
Installation
