2
Outdoor Installation
• Before installing an assembly, flush the line thoroughly to
remove all debris, chips, and other foreign objects. Failure to
do so may make the assembly inoperable.
• Series 2000SS and 3000SS backflow preventers are approved
by ASSE (American Society of Sanitation Engineers) to be
installed in horizontal or vertical positions as long as the flow
indicator arrow in the assembly is pointed in the direction of
water flow. Local water authorities must approve all installation
configurations.
• Allow sufficient clearance around the installed assembly to
conduct testing, servicing, and inspection. Allow a minimum of
12" from the flood level to the bottom of the assembly.
• If the double check valve or double check detector assembly is
installed in a vault or pit, be sure proper drainage is available.
If sufficient drainage is not available a cross-connection may
occur.
• If installing on a protection system, be sure to purge air from
the fire system. Fill the system slowly with all inspectors test
valves open.
• The control valves on the OSY-TS model have integrated
supervisory tamper switches that require connection to a fire
alarm control panel.
Installation Guidelines
Indoor Installation
Vertical Installation ASSE
Wiring the Tamper Switch
The supervisory tamper switch consists of two SPDT switches,
and is designed to send a signal when the valve is closed and
when the switch is removed from the valve. In the neutral posi-
tion, the switch indicates the valve is fully open. Closing the valve
causes the switch rod to come out of the valve stem groove,
activating the switch. Removing the device also activates the
switch.
Use the schematic diagram and the wiring notes for proper
wiring of the tamper switch to the fire alarm control panel. (For
more information refer to Tamper Switch Wiring Instructions at
watts.com.)
CAUTION
!
Before wiring supervisory switches in fire protection systems,
refer to the following standards:
NFPA 13: Standard for the Installation of Sprinkler Systems
NFPA 25: Inspection, Testing, Maintenance of Water-based Fire
Protection Systems
NFPA 70: National Electrical Code
NFPA 72: National Fire Alarm Code
CSA C22.1 NO.1 Canadian Electrical Code, Part 1, Safety
Standard for Electrical Installations Section 32
CAN/ULC-S524, Standard for Installation of Fire Alarm Systems
Wiring Notes
• Connection to power limited circuitry is required.
• The auxiliary switch is for supplemental use only and shall not
be used for fire alarm signaling applications.
• Switch functions are checked at the factory. Checking the
switch after field installation is strongly advised. Check conti-
nuity with the valve fully open. Switch functions activate within
two (2) turns from open.
WARNING
!
Metallic conduit required by NEC for proper grounding conduit
joint must be sealed with a conductive sealant.
Install switch in accordance with National Electrical Code and/or
local ordinances.
Wiring methods shall be in accordance with CSA C22.1,
Canadian Electrical Code, Part 1, Safety Standard for Electrical
Installations, Section 32 and CAN/ULC-S524, Standard for
Installation of Fire Alarm Systems Assure All Devices Are Properly
Grounded.
