Watts FEBCO 860 Series User manual

IOM-F-860
Installation, Operation, and Maintenance Manual
Series 860, LF860
Reduced Pressure Zone Assemblies
1⁄2" – 2"
Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use information
can result in death, serious personal injury, property
damage, or damage to the equipment.
Keep this Manual for future reference.
Local building or plumbing codes may require modifications
to the information provided. You are required to consult the
local building and plumbing codes prior to installation. If
the information provided here is not consistent with local
building or plumbing codes, the local codes should be
followed. This product must be installed by a licensed
contractor in accordance with local codes and ordinances.
Need for Periodic Inspection/Maintenance: This product
must be tested periodically in compliance with local codes, but
at least once per year or more as service conditions warrant.
All products must be retested once maintenance has been
performed. Corrosive water conditions and/or unauthorized
adjustments or repair could render the product ineffective for the
service intended. Regular checking and cleaning of the product’s
internal and external components helps assure maximum life and
proper product function.
NOTICE
If an assembly is recommended where installation may be
problematic, the assembly must be protected and secured. Remove
the handles of shutoff valves to discourage tampering, or install a
protective enclosure to discourage vandals. When opting for an
enclosure, install the protective cover so that adequate clearance is
available for maintenance and testing. Consult local codes before
installing any type of protective enclosure.
Series 860 is designed to protect drinking water supplies from
dangerous cross-connections in accordance with national plumbing
codes and water authority requirements for non-potable service
applications. The Lead Free series are used in potable drinking
water systems where code mandates protection from backpressure
and backsiphonage conditions. Series 860 Small and LF860 Small
each include a flood sensor on the relief valve to detect excessive
discharge.
860-FS
NOTICE
An add-on connection kit is required to activate the flood sensor.
Without the connection kit, the flood sensor is a passive component
and has no communication with any other device. (A retrofit sensor
connection kit is also available for existing installations. See “Add-on
and Retrofit Sensor Connection Kits,” for ordering details.)
NOTICE
Use of the flood sensor does not replace the need to comply with all
required instructions, codes, and regulations related to installation,
operation, and maintenance of this product, including the need to
provide proper drainage in the event of a discharge.
Watts®is not responsible for the failure of alerts due to connectivity
or power issues.
Contents
How It Operates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Service Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Air Gap Drain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Repair Kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Freeze Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Add-on and Retrofit Sensor Connection Kits . . . . . . . . . . . . . . . . . . . . 11

2
How It Operates
The FEBCO Series 860 Reduced Pressure Zone backflow preventer
assembly consists of two independently operating, spring loaded
check valves with a pressure differential relief valve located between
the two checks. The pressure drop across the first check valve
is approximately 7.0 psid with no flow. The relief valve consists of
a hydraulically balanced diaphragm with the high pressure side
hydraulically connected to the upstream pressure zone. The relief
valve remains closed during normal operation. The low pressure side
of the diaphragm is spring loaded to force the relief valve to open
when the pressure drop across the first check and the diaphragm is
reduced to approximately 3.0 psid. A complete assembly includes
two shutoff valves and four test cocks.
Service Procedures
FEBCO backflow prevention assemblies can be serviced with
standard tools and are designed for ease of maintenance. The
assemblies can be serviced in line, eliminating the need to remove
and reinstall a unit.
Suggested Tool Kit
• 1 crescent wrench
• 1 medium standard screwdriver
• Differential pressure test kit
• 1 medium Phillips screwdriver
• Box/open end wrench
1. Flush the line clean of debris before assembly installation. The
most common cause of check fouling and relief valve discharge is
dirt and debris in the seating areas.
2. To flush the line after installation, slowly close the inlet shutoff
valve, remove the cover and spring assemblies of both check
valves, and open the inlet shutoff valve to allow sufficient flow
of water through the assembly. Clear all sand, debris, and other
particles from the line. If debris in the water continues to cause
fouling, consider installation of a strainer upstream of the assembly
if in compliance with local codes.
3. Rinse all parts with clean water before reassembly.
4. Carefully inspect diaphragms, seals, and seating surfaces for
damage or debris. If the check valve seat disc has been severely
cut at the seat ring diameter, the assembly has been subjected
to extremely high and repeated backpressure. Either thermal
water expansion or water hammer is the most likely cause. If
backpressure persists, consider installation of a pressure relief
valve downstream of the assembly.
5. Use caution to avoid damaging any guiding surfaces while
handling parts. Do not force parts together. The O-ring seals
used in FEBCO assemblies require only a small tightening force to
ensure a positive seal.
6. Test the unit after servicing in accordance with locally approved
test methods to ensure proper operation; see the "Testing"
section.
7. Use the exploded drawings and parts list for visual aid information;
see the "Parts" section.
8. Apply a thin coating of the lubricant supplied in the repair kit to the
O-rings and other seals as directed. Any additional lubricants in
use must be FDA Approved food-grade petroleum jelly.
Test Cock No. 3
Test Cock No. 4
2nd Check
Module
Relief Valve
Test Cock No. 1
Inlet Shutoff
Valve Outlet Shutoff
Valve
1st Check Module
Flow
Test Cock No. 2
Cross-section with flood sensor
(Union ball valves not shown)

3
Check Module Disassembly
The complete list of items is included in the "Parts" section.
1. Slowly close the inlet and outlet ball valves. Bleed residual
pressure by opening test cocks No. 2, No. 3, and No. 4. Allow the
test cocks to remain open until the reassembling is completed.
Test cock No. 1 should remain closed.
2. Remove the cover bolts (Item 21) using the appropriate size
wrench.
3. Remove the spacer (Item 8) by grasping the flanged end of the
spacer and pulling it straight up.pulling straight up.
4. Remove the inlet check assembly by pulling it in the direction of
flow from the body bore until it is completely exposed, then lift it
out of the body.
5. Remove the outlet check assembly by placing the tip of a
medium-sized, flat-nose screwdriver in the slot of the seat
(Item 3) and prying the check assembly back until the red O-ring
(Item 3.1) is exposed. Then, using fingers, pull it from the body
bore until it is completely exposed, then lift it out of the body.
Check Module Seal Replacement
Both check assemblies are disassembled and reassembled in the
same manner. To service the checks, replace the check modules
with new ones by using check module assembly kits available from
FEBCO. Or, replace the rubber components in the check modules
by using the replacement rubber parts kits.
1. To disassemble the unit, grasp the seat section (Item 3) in one
hand and the guide section (Item 7) in the other hand, then rotate
in a counterclockwise direction (approx. 1/8 turn) until the two
parts disengage.
2. Remove the retaining screw (Item 5.2) and disc retainer (Item 5.1)
so the rubber disc is fully exposed. Carefully pry out the rubber
disc from the poppet. Be careful not to damage the poppet when
removing the disc. Rinse the poppet in clean water and replace
the old rubber disc with a new rubber disc. If the rubber disc is not
damaged, it can be reversed and reinstalled when a new disc is
unavailable. Rinse all other internal components with clean water.
Replace the disc retainer and secure with the retaining screw (Item
5.2).
3. Reassemble the check module by reversing the preceding steps.
When reassembling the check module, insert the poppet stem
into the guide hole and keep fingers clear of the slots in the
module.

4
Check Module Reassembly
Reverse the disassembly procedure to reassemble the unit along
with the following special instructions.
1. Inspect the check module O-ring (Item 3.1) for damage and
replace if necessary. To ease assembly, apply a thin coating of
the supplied lubricant to the O-ring before installing into the body.
CAUTION
!
Excess lubricant may cause foreign debris to collect on internal
components, which could foul the check assembly and result in
a test failure.
2. Make sure the end of each module inscribed with the word INLET
is facing the inlet of the valve.
3. When installing the check modules, make sure the check
assembly with the heavy duty spring is inserted in the inlet bore of
the body (first check position). Position the first check assembly so
that one (1) of the four (4) flow path windows is face-down toward
the relief valve. The check assembly with the weaker spring must
be installed in the outlet bore of the body (second check position).
4. When replacing the spacer (Item 8) between the two check
assemblies, be sure the flanged end of the spacer is touching
the back side of the inlet check assembly so that the cover fits
properly. Next, replace the cover making sure test cock No.
3 is on the upstream side. Do not over tighten cover bolts.
(Approximately 35 inch-pounds is sufficient.)
5. After reassembling, close test cocks No. 2, No. 3, and No. 4 (test
cock No. 1 should already be closed), then slowly open the inlet
ball valve. Bleed air from the unit by opening and closing test cock
No. 2, next No. 3, then No. 4.
NOTICE
During the bleeding process, the relief valve may discharge a high
volume of water until all test cocks have been closed and pressure
stabilized.
Relief Valve Repair
Discharge from the relief valve assembly may not indicate a relief
valve failure. Water is discharged from the relief valve when the
mainline check valves become fouled with foreign debris. (For more
information, see "Troubleshooting" before disassembling the relief
valve.) Detach the flood sensor and activation module if in use.
1. Slowly close the inlet and outlet ball valves. Bleed off air from
the unit by opening and closing test cock No. 2, next No. 3,
then No. 4. Test cock No. 1 should remain closed.
2. Loosen the brass cylinder in the center of the relief valve cover
(Item 18) by unscrewing 1⁄4turn (counterclockwise). Remove the
relief valve cover bolts (Item 21) and the relief valve cover (Item 19).
3. The internal relief valve assembly module is attached to the relief
valve cover. Unscrew the brass cylinder and remove from cover.
Grasp the outer diameter of the large outer diaphragm (Item 15)
and pull it away from the cover until the small outer diaphragm
(Item 16) comes out through the relief valve cover hole and is
completely separated from the relief valve cover. Discard the old
internal relief valve assembly module. Remove the plastic slip
rings (Item 18.1) and discard each one. Slide out the seat ring
(Item 12) and seat gasket ring (Item 12.1) from the relief valve
body and discard.
4. Apply a thin coating of the supplied lubricant to both sides of the
new seat gasket ring (Item 12.1), and slide it on the short end of
the new seat ring (Item 12). Slide the short end of the new seat
ring into the hole of the relief valve body. (The adhesion from
the lubricant holds the seat ring in place during the rest of the
assembly process.)
NOTICE
If applying new diaphragms from a rubber kit, ensure the
smooth rubber side of each diaphragm is facing outward
before assembly.
6. Check for external leaks and repair, if necessary. Slowly open
the outlet ball valve.
7. Test the assembly in accordance with locally approved methods.

5
5. Before installing the new internal relief valve assembly module,
apply a thin coating of the supplied lubricant to both sides of one
slip ring (Item 18.1) and insert it into the top of the relief valve
cover. Install the new internal relief valve assembly module by
grasping the outside of the outer diaphragm in one hand and the
smaller diaphragm in the other hand. Then pull upward gently on
the small outer diaphragm (Item 16) so that it forms the shape
of a tulip. Hold the small diaphragm so that it maintains the tulip
shape while sliding it through the relief valve cover hole and
plastic diaphragm gasket.
6. Apply a thin coating of the supplied lubricant to both sides of the
second slip ring (Item 18.1) and place it over the top of the small
diaphragm, making sure the outer diaphragm (Item 16) is not
folded or creased under the slip ring. Push the slip ring down flat
until the adhesion from the grease holds the small diaphragm in
place. This should roll the diaphragm as shown. Thread the brass
cylinder (Item 18) into the relief valve cover and hand tighten.
CAUTION
!
Do not twist the internal parts when the cylinder is tightened.
The small diaphragm may become folded or creased if the
internal assembly is restricted while tightening the cylinder.
7. Replace the O-ring (Item 20) in the relief valve cover. Properly
seat the round bead on the large diaphragm in the counterbore
of the relief valve cover. Position the spring (Item 13) over the seat
ring in the relief valve body and hold it in place while inserting the
guide end (Item 23) of the relief valve assembly module and relief
valve cover. Position the assembly so the O-ring aligns with the
sensing hole in the body and the guide slides into the seat ring.
Replace the relief valve cover bolts and tighten to approximately
35 inch-pounds. Do not over tighten. Tighten the brass cylinder
(Item 18) in the relief valve cover to approximately 30 feet pounds
of torque. Do not over tighten.
8. After reassembly, with all test cocks closed, slowly open the inlet
ball valve and bleed air from the unit by opening and closing test
cock No. 2, No. 3, then No. 4.
NOTICE
During the bleeding process, the relief valve may discharge a
high volume of water until all test cocks have been closed and
pressure has been stabilized.
9. Check for external leaks and repair, if necessary. Slowly open the
outlet ball valve.
10. Test the assembly in accordance with locally approved methods.
11. Upon completion of successful testing, reattach the flood sensor
and activation module if in use.

6
Testing
All mechanical devices should be inspected on a regular basis to
ensure proper functioning. The assembly should be tested at the
time of initial installation, after servicing or maintenance, and at least
annually thereafter. Acceptable test procedures are published by
Foundation for Cross-Connection Control and Hydraulic Research at
the University of Southern California (USC), American Water Works
Association (AWWA), American Society of Sanitary Engineering
(ASSE Series 5000), and Canadian Standards Association (CAN/
CSA B64.10). Consult the local regulatory authority for specific
information.
Air Gap Drain
1. Before installation, check local codes. This type of drain may not
be approved for use in some areas.
CAUTION
!
This drain is intended to catch moderate relief valve
discharges due to line pressure fluctuations and minor
check valve fouling. Under certain conditions relief valves
can discharge water at rates greater than the air gap drain
capacity.
2. For an indoor installation, locate the assembly near a floor drain
sized to adequately handle discharge. A strainer before the
backflow assembly is strongly suggested.
3. After installation of backflow assembly and piping, attach the
drain funnel to the relief valve as shown in the illustration by using
the self-tapping screws provided in the kit to join the drain funnel
halves together, making sure the slots in the drain funnel align with
the tabs on the relief valve port.
If the flood sensor is in use, attach the air gap directly to the
sensor. For valve sizes ½" to 1", use air gap 909AGA (ordering
code 0881399). For valve sizes 1¼" to 2", use air gap 909AGC
(ordering code 0881376).
NOTICE
The discharge of the drain funnel is a slip-fit design. The drain funnel
is not designed or able to support drainpipe weight.
VALVE SIZE
PLASTIC
PART NO.
METAL
PART NO.
1/2"905358 905532
3/4"905358 905532
1" 905358 905532
11/4"905359 905533
11/2"905359 905533
2" 905359 905533

7
Parts
ITEM DESCRIPTION QUANTITY
1 Body 1
1.2 Tailpiece 1
1.4 O-Ring 1
2 Cover 1
2.2 O-Ring 1
3 Seat 2
3.1 O-Ring 2
3.2 Inlet Ring
(11/4" & 11/2") 1
4 Poppet 2
5 Seat Disc 2
5.1 Disc Retainer 2
5.2 Round HD Screw 2
6 Spring
(1st Check Spring) 1
6.1 Spring
(2nd Check Spring) 1
7 Guide 2
8 Retainer Spacer 1
9* Ball Valve Tapped 1
Union End BV Tapped 1
9.1* Ball Valve 1
Union End Ball Valve 1
11 Test Cock 4
12 Seat Ring - RV 1
12.1 Gasket Ring - RV 1
13 Spring - RV 1
14 Seat Disc - RV 1
15 Diaphragm - RV 1
16 Outer Diaphragm - RV 1
17 Small Piston - RV 1
17.1 Round HD Screw - RV 1
17.2 Washer - RV 1
17.3 Hex Nut - RV 1
18 Cylinder - RV 1
18.1 Slip Ring Cylinder - RV 2
18.2 Slide (Plug) - RV 1
19 Cover - RV 1
20 O-Ring - RV 1
21 Hex HD Capscrew *
22 Large Piston - RV 1
23 Guide - RV 1
Call customer service if you need assistance with technical details.
* Quantity varies with valve size;
6 each for 1⁄2" and 3⁄4, 8 each
for 1", 14 each 11⁄4", 11⁄2", 2"
Check Module
Assembly Kit
View shown for sizes 1½" to 2" only
Relief Valve Module Kit
(not including 21)

8
Repair Kits
Before contacting the local FEBCO parts distributor, write down the
following information to have on hand when placing the order. The
serial number located on the assembly ID plate can assist in ordering
the proper kit.
• Item number and name. Locate the number and name of the
item in the "Parts" section.
• Kit number. Use the tables below to find the number of the kit
containing the item.
• Valve size. Verify the size of the valve that the item is to be
used on.
• Model number. Record the full model number found on the
assembly ID plate.
ORDERING CODE STYLE SIZE
in. mm
Complete Rubber Kit
905355 ALL 1/2 & 3/4 15 & 20
905356 ALL 125
905357 ALL 1 1/4 - 2 32 - 50
Kit includes all rubber parts.
Check Module Rubber Kit
905342 ALL 1/2 & 3/4 15 & 20
905343 ALL 125
905344 ALL 1 1/4 - 2 32 - 50
Both checks. Kit includes Items 2.2, 3.1 (qty 2), and 5 (qty 2).
Relief Valve Rubber Kit
905345 ALL 1/2 & 3/4 15 & 20
905345 ALL 125
905346 ALL 1 1/4 - 2 32 - 50
Kit includes Items 12, 12.1, 14, 15, 16, 18.1 (qty 2), and 20.
Single Poppet Kit
905339 ALL 1/2 & 3/4 15 & 20
905340 ALL 125
905341 ALL 1 1/4 - 2 32 - 50
Valve has two poppets. Kit includes Items 4 to 5.2.
LEAD FREE*
LEAD FREE*
LEAD FREE*
LEAD FREE*
ORDERING CODE STYLE SIZE
in. mm
#1 Check Module Kit (inlet)
905348 ALL 1/2 & 3/4 15 & 20
905350 ALL 125
905352 ALL 1 1/4 - 2 32 - 50
Kit includes Items 3 to 7 for inlet check.
#2 Check Module Kit (outlet)
905347 ALL 1/2 & 3/4 15 & 20
905349 ALL 125
905351 ALL 1 1/4 - 2 32 - 50
Kit includes Items 3 to 7 for outlet check.
Full Relief Valve Module Kit
905353 ALL 1/2 & 3/4 15 & 20
905353 ALL 125
905354 ALL 1 1/4 - 2 32 - 50
Kit includes Items 12 to 17.3, 18.1 (qty 2), 20, 22, 23
LEAD FREE*
LEAD FREE*
*The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

9
Freeze Protection
The freeze protection backflow prevention assembly may be subject
to damage if the internal water is allowed to freeze. The unit must
be protected from freezing using a heated enclosure, insulation
using heat tape, or other suitable means. The unit must always be
accessible for testing and maintenance. If the system is shut down
during freezing weather, use the following procedures to drain
internal passages.
Main Valve Draining
1. Close the main shutoff valve.
2. Open the inlet drain.
3. Open the inlet and outlet ball valves 45 degree (half open/half
closed).
4. Open all test cocks then open the outlet drain.
5. Remove the cover and inlet check module until all water inside the
valve drains back through the inlet drain.
6. If the piping downstream of the backflow assembly is blown out
with compressed air, connect the air supply to the outlet drain
and close the outlet ball valve. After clearing the system with air,
partially open the outlet ball valve.
7. Leave all drain valves, test cocks, and ball valves in the half open/
half closed position for the winter.
8. For reduced pressure units only. Loosen the relief valve cover to
drain, then tighten when draining is completed.
9. Reset the ball valve to the close position (handle perpendicular to
the valve) before repressurization..
Ball Valve Shutoff Draining
If the assembly has been installed with ball valve shutoff valves, the
ball valves must also be properly drained to prevent freeze damage.
1. Ensure the main valve draining is finished and all ball valve shutoffs
and test cocks are in a half open/half closed (45 degree) position.
2. Drain the pipeline to allow water between the ball valves and valve
body to drain.
3. Leave the ball valves in the half open/half closed position for the
winter to prevent freeze damage.
4. Fully close the ball valves before the system is repressurized.
NOTICE
OPEN AND CLOSE BALL VALVES SLOWLY TO PREVENT
DAMAGE TO THE SYSTEM CAUSED BY WATER HAMMER.

10
Troubleshooting
Check Procedure with Differential Pressure Gauge
CHECKLIST READING PROBLEM
Check differential across check valve No. 1 2 to 3 psid Leak in check valve No. 1 or No. 2
6 to 8 psid and steady Malfunctioning pressure relief valve
2 to 7 psid and steady Inlet pressure fluctuating
Check differential across check valve No. 1 2 to 3 psid Check valve No. 1 held open
6 to 8 psid and steady Malfunctioning pressure relief valve
Check Procedure Without Differential Pressure Gauge
CHECKLIST READING PROBLEM
Close gate valve No. 2 If discharge stops Leak in check valve No. 2
If discharge does not stop Try the next remedy
Open test cock No. 4 to produce a flow greater than the
differential relief valve discharge
If discharge stops Leak in check valve No. 1
If discharge does not stop Malfunctioning pressure relief valve
PROBLEM CAUSE SOLUTION
Continuous discharge from relief valve during NO FLOW
conditions (Discharge stops with water flow) With this
symptom, the pressure drop across check valve No. 1
would be 2 to 3 psid. If a flow of water (more than dis-
charge) is created through the valve, the pressure drop
should increase to approximately 7 psi
Debris fouling check valve No. 1 Inspect and clean
Outlet pressure highter than inlet pressure and deris
fouling check valve No. 2
Spring stem not moving freely Inspect for dirt or other foreign material
Damaged seat or seat disc Inspect and replace (If necessary, the seat disc can be
reversed in sizes ½" to 2".)
Leakage at check module O-ring nspect and replace seal or O-ring
Intermittent discharge from relief valve during NO FLOW
conditions. With the symptom, the pressure drop across
the check valve No. 1 would vary from about 2 to 7 psid
Inlet line pressure variations causing relief valve to
discharge
Eliminate or reduce pressure variations by installing a soft-
seated, spring-loaded check on upstream side of device
Pressure surges (water hammer) causing relief valve to
discharge as pressure wave passes through the zone
Eliminate or reduce pressure surges
Continuous discharge from relief valve during FLOW and
NO FLOW conditions With this symptom, the pressure drop
across the check valve No. 1 would be 7 psid or more at
all time
Seat disc dislodged from cavity in the main stem
(This can be caused by pressure surges during initial
filling of system lines.)
Reposition disc in main stem cavity
Repressurize system slowly
Debris fouling the relief valve seat Inspect and clean
Debris blocking the relief valve sensing passage
Dirt or scale jamming main stem Inspect and clean, or replace
Leakage at main stem
Relief valve does not open above
2.0 psid during field testing
Outlet gate valve not closed completely Inspect and clean
Plugged low pressure hydraulic passage (from “ZONE” to
inner diaphragm)
Improper alignment of internal parts during reassembly
(causing high resistance to movement)
Reassemble
Jammed main stem due to debris blocking gate valve Clean
Check No. 1 pressure drop is low (less than 5 psid) during
field testing
Debris fouling first check seat Inspect and clean
Debris fouling second seat with backpressure
Inlet pressure variations causing inaccurate gauge reading Eliminate pressure variations by installing a soft-seated,
spring-loaded check on upstream side of device
Damaged seat or seat disc Inspect and clean as required
Worn guide, bushing, or stem Inspect and replace as required
Check No. 2 fails to hold back pressure during field testing Outlet gate valve not closed completely Inspect and clean
Debris fouling second check seat
Damaged seat or seat disc Inspect and replace if required
Worn guide, bushing, or stem

11
Add-on and Retrofit Sensor Connection Kits
For Building Management Systems
ORDERING CODE ADD-ON/RETROFIT KIT DESCRIPTION
88009431 FP-FBF-BMS
BMS Flood Sensor Connection Kit
Series 860 Small, LF860 Small
Sizes ½" to 2"
Includes sensor activation module with cable, power adapter, and ground wire.
Use this kit to activate the flood sensor and enable flood detection capabilities
on the relief valve of a new installation in a BMS configuration.
88009425 FP-RFK-FBF-BMS-CFS
BMS Flood Sensor Retrofit
Connection Kit
Series 860 Small, LF860 Small
Sizes ½" to 2"
Includes flood sensor (2), sensor activation module with cable, power adapter,
and ground wire. Use this kit to add flood detection capabilities to the relief
valve of an existing installation in a BMS configuration.
For Cellular Communication
ORDERING CODE ADD-ON/RETROFIT KIT DESCRIPTION
88009432 FP-FBF-CFS
Cellular Flood Sensor Connection Kit
Series 860 Small, LF860 Small
Sizes ½" to 2"
Includes sensor activation module with cable, Cellular Gateway with mounting
kit, power adapter, and ground wire. Use this kit to activate the flood sensor
and enable flood detection capabilities as well as e-mail, text, and voice noti-
fications.
88009426 FP-RFK-FBF-CFS
Cellular Flood Sensor Retrofit Connection Kit
Series 860 Small, LF860 Small
Sizes ½" to 2"
Includes flood sensor (2), sensor activation module with cable, Cellular Gateway
with mounting kit, power adapter, and ground wire. Use this kit to add flood
detection capabilities to the relief valve of an existing installation and enable
e-mail, text, and voice notifications.

Limited Warranty: FEBCO (the “Company”) warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment.
In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge.
THE WARRANTY SET FORTH HEREIN IS GIVEN EXPRESSLY AND IS THE ONLY WARRANTY GIVEN BY THE COMPANY WITH RESPECT TO THE PRODUCT. THE COMPANY MAKES NO OTHER WAR-
RANTIES, EXPRESS OR IMPLIED. THE COMPANY HEREBY SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRAN-
TIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
The remedy described in the first paragraph of this warranty shall constitute the sole and exclusive remedy for breach of warranty, and the Company shall not be responsible for any incidental, special
or consequential damages, including without limitation, lost profits or the cost of repairing or replacing other property which is damaged if this product does not work properly, other costs resulting from
labor charges, delays, vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or any other circumstances over which the Company has no control.
This warranty shall be invalidated by any abuse, misuse, misapplication, improper installation or improper maintenance or alteration of the product.
Some States do not allow limitations on how long an implied warranty lasts, and some States do not allow the exclusion or limitation of incidental or consequential damages. Therefore the above
limitations may not apply to you. This Limited Warranty gives you specific legal rights, and you may have other rights that vary from State to State. You should consult applicable state laws to
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