System Sensor ZC20 - Manual (Page 2)

Zonecheck pump) on the other. IMPORTANT: There are two
Zonecheck valves enclosed with each Retrofit kit: 1.) A ‘Red’-handled
valve, which is a standard valve that serves as an inlet valve; and, 2.)
A ‘Green’-handled valve, which is an outlet valve that contains a check
valve. The valves must be oriented properly for Zonecheck to work
correctly. If mounting Zonecheck to a vertical riser, attach the Red
valve so that it will be above the pump, as the assembly would appear
after installion (See Figure 1 for illustration). If mounting Zonecheck
to a horizontal run of pipe, attach the red valve so that it will be down-
stream, in relation to the sprinkler system waterflow, from the
Zonecheck pump (See Figure 1 also). Attach the mechanical tees (sup-
plied by others), ensuring that both tees are parallel to each other and
perpendicular to the Zonecheck assembly. Ensure that all joints are
tight and set the entire assembly aside.
3. Place the aluminum angle template on the pipe (leg ends contacting
pipe surface) locating one edge of the leg where the mechanical tee
holes will be drilled. Scribe or draw a pencil line on the
pipe the full length of the template. Note: Ensure
that both legs of the aluminum template
are in complete contact along their
entire length with the pipe surface to
ensure that the scribed line will run
along the center line of the pipe. Failure
to follow this step may cause damage to the Zonecheck product or
leakage.
4. Measure the center-to-center distance between the
mechanical tees and transfer that measured dis-
tance to the scribed line on the pipe sur-
face. IMPORTANT: Ensure that the
markings on the pipe are located so
that the stripes on the Zonecheck pump
housing will be parallel to the floor
after installation (See Figure 1 for installation). Failure to follow this
step may result in pump seizure.
5. The Waterflow detector will typically mount to the pipe 90 degrees from
the location of the pump, as space permits. To determine
the location of the flow switch, scribe a second line
parallel to the line made in Step 3 and mark the
midpoint between the mechanical tees
This intersection line will locate the hole
for the waterflow device. Ensure that this
location will permit access to both the
detector and the Zonecheck assembly. If
located on horizontal pipe, ensure that the waterflow detector, once
mounted, will be located on the topside of the pipe. Ensure that the
intended location does not result in the detector being mounted upside-
down, as condensation may collect in the housing and impair the oper-
ation of the detector. See Figure 1 for illustration.
6. Refer to the suggested hole size requirements from the mechanical tee
manufacturer and the waterflow manufacturer and drill the three holes
where marked in Steps 4 & 5. IMPORTANT: Before drilling, verify that
the stripes on the Zonecheck pump housing will be parallel to the floor
after installation, as noted in Step 4 (See Figure 1 for illustration).
When drilling the holes with a hole saw, make certain that the center
of the cut does not remain in the pipe. Clean the outside of the pipe to
remove dirt, metal chips, and cutting lubricant.
7. Mount the completed Zonecheck assembly to the sprinkler pipe.
Secure the U-bolts of the mechanical tees and tighten to manufactur-
er’s recommended torque.
8. Remove the waterflow detector from the carton and install on pipe.
The direction-of-flow arrow shown on the saddle must match the
direction of the waterflow in the pipe. Refer to the manufacturer’s
instructions for mounting the waterflow detectors.
9. Refer to the wiring diagram (see Figure 2.) for proper electrical con-
nections for stand-alone or multiple unit keyswitch installation.
Other applicable NFPA standards, local codes, and the requirements of the
authority having jurisdiction also apply.
Failure to follow these directions may prevent the device from reporting
the flow of water in the event the associated sprinkler system is activated
by a fire. System Sensor is not responsible for devices that have been
improperly installed, tested, or maintained.
1. Mount the Zonecheck Flow Switch Tester where there is adequate
clearance for installation and removal and a clear view of it for inspec-
tions.
2. When installing a manifold model, locate 6 to 7 feet above the floor to
protect from possible damage. When installing a retrofit model, mount
between 6″ and 12″ from the flow switch.
3. On horizontal runs, orient the Zonecheck Flow Switch Tester on the
side of the pipe only. Failure to do so may impair the operation of the
Zonecheck pump (see Figure 1). For vertical flow applications, mount
the Zonecheck Flow Switch Tester on pipe through which water flows
upward. Otherwise, the unit may not operate properly.
4. Mount the Zonecheck Flow Switch Tester at least 6 inches from a fit-
ting that changes the direction of water flow and no less than 24 inch-
es from a valve or drain.
5. Be sure the direction-of-flow arrow shown on the saddle matches the
direction of the waterflow in the pipe.
Before installing a Zonecheck Flow Switch Tester:
1. Contact central monitoring station or appropriate fire safety personnel
before installing the Zonecheck Flow Switch Tester.
2. Identify and close tightly the sprinkler system’s zone valve.
3. Close both (Red & Green) Zonecheck valves.
4. Drain the sprinkler zone.
Installation Guidelines
Manifold Model
1. Remove the assembled manifold unit from the carton.
2. Prepare to install the manifold unit to the riser. If mounting the mani-
fold unit to a vertical riser, orient the assembly with the red valve
above the Zonecheck pump. If mounting the manifold to a horizontal
waterflow pipe, orient the assembly with the red valve on the down-
stream end of the waterflow pipe (see Figure 1). Verify that the stripes
on the Zonecheck pump housing will be parallel to the floor after
installation. If Zonecheck will be located on a horizontal pipe, ensure
that the waterflow detector, once mounted, will be located on the top-
side of the pipe (see Figure 1 for illustration). Ensure that the intend-
ed location does not result in the detector being mounted upside
down, as water may collect in the housing and impair the operation of
the detector.
3. Mount the Schedule 10 pipe (to which the Zonecheck pump and
Waterflow Detector are mounted) to the riser using industry-accepted
practices in conjunction with applicable NFPA standards, local codes,
and the authority having jurisdiction.
4. Refer to the wiring schematic for proper electrical connections for
stand-alone or multiple unit keyswitch installation.
Retrofit Model
1. Remove contents from the carton.
2. Assemble the Zonecheck unit. If the mechanical tees used to attach the
Zonecheck unit to the sprinkler pipe have a British Standard Pipe
Thread (BSPT) outlet, select the elbows contained within the bag
marked ‘BSPT/BSPT’. If the mechanical tees have an NPT thread out-
let, select the elbows contained within the bag marked ‘NPT/BSPT’
(Note: the embossed ‘A’ on the elbow designates the NPT thread).
Choose the appropriate elbows. Connect the BSPT threaded end of the
90-degree elbows to each of the Zonecheck valves, insert the gasket
into the valve, and connect each valve to the correct side of the
Zonecheck pump. Each valve has a female BSPT threaded end (con-
nected to the elbow) on one side and a male union (connected to the
CAUTION
D770-32-00 2 I56-0053-003R