PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY
IMPORTANT GENERAL SAFETY INFORMATION -
ADDITIONAL SPECIFIC SAFETY ALERTS APPEAR IN THE FOLLOWING INSTRUCTIONS.
© 2014 AMTROL Inc.
Part #: 9017-123 (08/14)
Mark of the
Originator
1400 Division Road, West Warwick, RI USA 02893
T: 800.426.8765 F: 800.293.1519
www.amtrol.com
Backflow preventer
with control valves
Fill cup or
filling connection
Heated area
Drain
valve
Unheated area
Water
supply
FIRE-X-TROL
®
FPT-1 (C) through FPT-12 (C)
Backflow preventer
with control valves
Fill cup or
filling connection
Heated area
Drain
valve
Unheated area
Water
supply
FIRE-X-TROL
®
FPT-20V (C)
through
FPT-210V (C)
EXPLOSION HAZARD.
Failure to follow instruc-
tions in the accompanying product manual can
cause rupture or explosion, possibly causing serious or fatal injury, leak-
ing or flooding and/or property damage.
Location of the FIRE-X-TROL
®
1. The FIRE-X-TROL
should be installed on the water supply line to the
unhea ted area at a point between the backflow preventer and fill cup
connection (Figure 1).
2. Once the FIRE-X-TROL is installed, check the system for any leakage.
Make repairs if necessary.
Installation
THIS PRODUCT MUST BE INSTALLED BY A
QUALIFIED PROFESSIONAL.
1. Visually inspect FIRE-X-TROL for any damage.
2. Hydraulic system pressure must be at zero.
3. Attach nitrogen or dry air (-50°F/-46°C dew point or lower) supply to
expansion chamber charging valve.
Pre-charge with nitrogen or dry air (-50°F/-46°C
dew point or lower) only.
Do not use Oxygen - Explosion Hazard.
4. Pre-charge to 2 psig (0.14 bar) below system static pressure at tank
location.
Never pre-charge below 25% of the system
maximum rated pressure.
5. Remove charging hose. Carefully test charging valve for leakage.
6. Replace plastic cap.
Protect against freezing temperatures.
Can cause damage and/or product failure.
Isolate expansion chamber during system
hydro test.
Operating Instructions
1. The FIRE-X-TROL is installed in the supply line between the backflow
preventer and the fill cup connection. Its sealed-in air pre-charge
chamber prevents water from entering it until the system pressure
exceeds the pre-charge pressure. The FIRE-X-TROL is precharged
to 25 psig (1.7 bar).
2. As the water/antifreeze solution temperature rises, expanded system
fluid enters the FIRE-X-TROL’s non-corrosive reservoir. The pre-
charge air chamber absorbs the pressure increase, keeping system
pressure below maximum system rating.
3. As the water/antifreeze temperature decreases, pressure in the air
chamber forces system fluid back into the system.
4. In antifreeze systems, this sequence allows the system antifreeze
percentage to stay constant. Additional supply of water/antifreeze
is not needed to replace fluid that would have escaped through a
relief valve.
Maintenance
1. Sprinkler system must be maintained and inspected per NFPA 25.
Warranty
Fire-X-Trol Models: One (1) Year Limited Warranty
Visit www.amtrol.com for complete warranty details.
Figure 1
