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

8. When an uninterruptible water flow alarm is required, Victaulic
recommends the use of a low-pressure alarm installed on the
diaphragm charge line downstream of the strainer/check restric-
tor. Another option is to install a Series 75B Supplemental Alarm
Device.
9. Per NFPA 13 requirements, piping must be pitched so that
systems can drain properly. For areas that are subject to high
levels of condensation, or where piping is not properly pitched, an
optional Series 75D Water Column Device kit is available to assist
in automatically draining water out of the riser.
VALVE/TRIMINSTALLATION
1. Make sure the trim drawing matches the system’s requirements.
CAUTION
• Makesurethefoamspacerisremovedfrom
insidethevalvebodybeforeattemptingto
installthevalve.
Failuretofollowthisinstructioncouldcause
impropervalveoperation,resultinginpersonal
injuryand/orpropertydamage.
2. Remove all plastic caps and foam spacers from the valve.
3. Apply a small amount of pipe joint compound or Teflon* tape to
the external threads of all threaded pipe connections. DO NOT get
any tape, compound, or other foreign material into the valve body,
pipe nipples, or valve openings.
CAUTION
• Makesurenoforeignmaterialgetsintothevalvebody,pipe
nipples,orvalveopenings.
• IfusinganymaterialotherthanTeflontape,useextracaution
sothatnomaterialgetsintothetrim.
Failuretofollowtheseinstructionscouldcauseimpropervalve
operation,resultinginpersonalinjuryand/orpropertydamage.
4. Install the valve, trim, and accessories per the trim drawing.
TO ACTUATOR
TRIM
5. FORVALVESINSTALLEDWITHASERIES746-LPADRY
ACCELERATOR:Make sure the Series 746-LPA Dry Accelerator is
installed in accordance with the trim drawing provided. The end
with the vent seal “button” must be installed facing down (toward
the trim).
6. Supply pressure to the diaphragm charge line by providing an
uninterrupted source of water from upstream of the main control
valve.
* Teflon is a registered trademark of the DuPont Company
COMPRESSIONFITTINGANDTUBEINSTALLATION
Compression Fitting and Tube Configuration
for Auto Drain and Drip Check
Compression Fitting and Tube Configuration
for Actuator
Compression fittings and tubes are provided for connection from the
outlet of the auto drain, drip check, and actuator to the drip cup or
drain. These compression fittings and tubes must be installed, in accor-
dance with the trim drawing provided. NEVER insert a plug into the out-
let of the auto drain, drip check, or actuator in place of the compression
fitting/tube.
HYDROSTATIC TESTING
WARNING
• Ifairtestingisrequired,DONOTexceed
50psi/3.4Barairpressure.
Failuretofollowthisinstructioncouldresult
inseriouspersonalinjuryand/orproperty
damage.
The Victaulic Series 769 FireLock NXT Preaction Valve is UL Listed and
FM Approved for a maximum working pressure of 300 psi/20.7 Bar and
is factory tested to 600 psi/41.4 Bar for all sizes. The valve can be hydro-
statically tested against the clapper at 200 psi/13.8 Bar or 50 psi/3.4 Bar
above the normal water supply pressure (2-hour limited time period) for
acceptance by the authority having jurisdiction.
I-769P.AC/ELEC_12
FireLockNXT™AutoConvertPreactionValve
SERIES 769
PreactionElectricAutoConvertDryTrim
I-769P.AC/ELECINSTALLATION,MAINTENANCE,ANDTESTINGMANUAL
www.victaulic.com
VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2009 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
REV_B

Victaulic FireLock NXT 769 Series Specifications

General

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