Victaulic FireLock NXT 769 Series Installation, Maintenance, And Testing Manual

DESCRIPTION–AUTOCONVERTTRIMASSEMBLY
The AutoConvert Trim Assembly consists of a latching solenoid mod-
ule and a Series 776 Low-Pressure Actuator. The AutoConvert Trim
Assembly monitors incoming power to the Fire Alarm Control Panel
(FACP) and allows for continuous fire protection in the event of an AC
power loss, without draining battery backup.
In the event of an AC power loss, the latching solenoid module receives
a quick electrical pulse from the FACP to latch open. The latching sole-
noid module stays in the open position without requiring additional cur-
rent draw. This allows the FACP to continuously monitor the system and
provide alarms in the event of a fire condition for the normal life of the
battery backup or until power is restored.
In the open condition, air is allowed to flow through the latching sole-
noid module to the Series 776 Low-Pressure Actuator and converts the
system to a non-interlocked condition. An air loss in the system piping
or an electrical release from the FACP would allow the preaction valve to
actuate and fill the sprinkler system piping with water.
The system continues to act as a dry valve until AC power is restored.
When AC power is restored, the latching solenoid module receives
another quick electrical pulse from the FACP to latch closed. The preac-
tion system then returns to its standard release method. Manual reset-
ting of the system is not required.
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6
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9
Bill of Materials
1 Braided Stainless Steel Flex Hose
2 Latching Solenoid Module
3 AutoConvert Assembly Air Pressure Gauge
(0-80 psi/0-5.5 Bar with Retard)
4 Gauge Valve
5 Series 776 Low-Pressure Actuator
6 3-in-1 Strainer/Check/Restrictor Assembly
7 Strainer
8 Restrictor
9 AutoConvert Assembly Pre-Set Air Pressure Switch
LATCHINGSOLENOIDMODULECUTAWAY
Enclosure
Washer
Nut
Stando Panel
Support
Screw
Self-Sealing
Lock Washer
Lock Nut
Latching
Solenoid
O-Ring
Stando
REV_B
FireLockNXT™AutoConvertPreactionValve
SERIES 769
PreactionElectricAutoConvertDryTrim
I-769P.AC/ELEC
INSTALLATION,MAINTENANCE,ANDTESTINGMANUAL
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VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2009 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
I-769P.AC/ELEC_7

Victaulic FireLock NXT 769 Series Specifications

General

Brand	Victaulic
Model	FireLock NXT 769 Series
Category	Control Unit
Language	English