Victaulic 7C7 Series Installation Instructions Manual

INSTALLATION INSTRUCTIONS
Series 7C7 Air Maintenance/Compressor Assembly
• Read and understand all instructions before attempting to install any Victaulic piping products.
• Depressurize and drain the piping system before attempting to install, remove, adjust, or perform maintenance on any Victaulic products.
• Wear safety glasses, hardhat, and foot protection when working with Victaulic piping products.
• Any activities that require taking the valve out of service may eliminate the fire protection provided by the system. Before removing the
valve from service, notify the authority having jurisdiction. Consideration of a fire patrol should be given for the affected areas.
Failure to follow these instructions could result in serious personal injury and/or property damage.
EXPLODED VIEW DRAWING AND DESCRIPTION –
AIR MAINTENANCE TRIM OF THE SERIES 7C7
The Series 7C7 Air Maintenance/Compressor Assembly is comprised
of air maintenance trim and a 1/6-Hp, 1/3-Hp, 1/2-Hp, or 3/4-Hp (for
international use only) air compressor. This assembly is designed to
control system air pressure for Series 768 FireLock NXT™ Dry Valves,
Series 764 FireLock NXT Alternate Wet/Dry Valves, and Series 769
FireLock NXT Deluge and Preaction Valves (pneumatic systems).
A decrease in air pressure will close the pressure switch. When the
pressure switch closes, the air compressor turns on to restore air
pressure. When air pressure is restored, the air compressor turns off,
and pressure in the compressor automatically bleeds off through the
release valve of the pressure switch. The release valve protects the air
compressor from startup overload.
9
Bill of Materials
Item Qty. Description
1 1 Restrictor (½-inch NPT)
2 1 Strainer (½-inch NPT)
3 1 Swing Check (½-inch NPT)
4 1 Slow-Fill Ball Valve (Normally Open)
5 1 Spring-Loaded, Soft-Seated
Ball Check Valve
6 1 Pressure Switch
7 1 Compression Fitting, Straight
(¼-inch NPT x ¼-inch Tube)
8 1 Compression Fitting, 90° Elbow
(¼-inch NPT x ¼-inch Tube)
9 1 Copper Tubing (¼-inch OD)
10 1 Fast-Fill Ball Valve (Normally Closed)
11 1 Pressure Switch Isolation Ball Valve
(Normally Open - Lockable)
.
Exaggerated for Clarity
NOTICE
• ONLY ONE SYSTEM IS ALLOWED PER SERIES 7C7 AIR
MAINTENANCE/COMPRESSOR ASSEMBLY.
AIR SUPPLY REQUIREMENTS
The required air pressure for Series 768 FireLock NXT Dry Valves,
Series 764 FireLock NXT Alternate Wet/Dry Valves, and Series 769
FireLock NXT Deluge and Preaction Valves is 13 psi/0.9 Bar minimum,
regardless of the system supply water pressure. Normal air pressure
should not exceed 18 psi/1.2 Bar. Victaulic presets the Series 7C7
Air Maintenance/Compressor Assembly to the recommended air
pressure of 13 psi/0.9 Bar as the "on" or "low" pressure setting for the
compressor and 18 psi/1.2 Bar as the "off" or "high" pressure setting.
Failure to maintain air pressure within the 13-psi/0.9-Bar to 18-psi/
1.2-Bar range could delay system operation response time.
REV_F
7
6
4
11
8
1
5
10
3
2
To ½-inch NPT Nipple of
Series 7C7 Assembly
WARNING
The Series 7C7 Air Maintenance/Compressor Assembly MUST NOT be
used on a Series 768 or Series 769 FireLock NXT Valve installed with
a Series 746 or Series 746-LPA Dry Accelerator, unless a tank and air
regulator are added.
ELECTRICAL REQUIREMENTS
• 1/6-Hp compressor is available for 110-volt AC/60 Hz operation
• The 1/3-Hp compressor is available standard for low-voltage, 110-volt
AC/60 Hz operation. In addition, high-voltage, 220-volt, single-phase
AC/50 - 60 Hz operation for international use is available.
• 1/2-Hp compressor is available for 110-volt AC/50 - 60 Hz operation
• The 3/4-Hp compressor is available for international use only. A
220-volt, single-phase AC/50 Hz option or a 220-volt, single-phase
AC/60 Hz option is available.
COMPRESSOR CAPACITIES
The engineer/system designer is responsible for sizing the compressor
so that the entire system is charged to the required air pressure within
NFPA guidelines (30 minutes). DO NOT oversize the compressor to pro-
vide more airflow. An oversized compressor will slow down or possibly
prevent valve operation.
Nominal
AC Voltage/
Hz Pressure
Hp (+/- 10%) psi/Bar
18
1/6 110/60
1.2
18
1/3 110/60
1.2
18
1/3 220/50
1.2
18
1/3 220/50
1.2
18
1/3 220/60
1.2
18
1/2 110/50
1.2
18
1/2 110/60
1.2
18
3/4 220/50
1.2
18
3/4 220/60
1.2
18
3/4 220/50
1.2
18
3/4 220/60
1.2
NOTE: Refer to the charts on the following pages for minimum required
fill capacities to 13 psi/0.9 Bar. Low air alarms will clear at 13 psi/0.9 Bar. In
addition, these charts contain higher capacities to 18 psi/1.2 Bar that are
not shown in the table above.
I-7C7
Capacity Capacity
WITH WITHOUT
Time Auto Vent Auto Vent
Minutes gallons/m 3 gallons/m
175 275
30
0.7 1.1
375 525
30
1.4 2.0
160 235
30
0.6 0.9
450 660
60
1.7 2.5
370 400
30
1.4 1.5
660 670
30
2.5 2.5
780 830
30
3.0 3.1
600 675
30
2.3 2.5
700 775
30
2.7 2.9
1200 1350
60
4.5 5.0
1375 1525
60
5.2 5.8
Amp
3 Draw
2.1 Amps
3.6 Amps
1.8 Amps
6.6 Amps
3.8 Amps
I-7C7_1