ZURN AquaSense ZER-TM Series User manual

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Power Options:
Battery (Standard)
LIMITED WARRANTY
All goods sold hereunder are warranted to be free from defects in material and factory workmanship for a period of three years from the date of purchase.
Decorative nishes warranted for one year. We will replace at no costs goods that prove defective provided we are notied in writing of such defect and the
goods are returned to us prepaid at Sanford, NC, with evidence that they have been properly maintained and used in accordance with instructions. We shall
not be responsible for any labor charges or any loss, injury or damages whatsoever, including incidental or consequential damages. The sole and exclusive
remedy shall be limited to the replacement of the defective goods. Before installation and use, the purchaser shall determine the suitability of the product for his
intended use and the purchaser assumes all risk and liability whatever in connection therewith. Where permitted by law, the implied warranty of merchantability
is expressly excluded. If the products sold hereunder are “consumer products,” the implied warranty of merchantability is limited to a period of three years and
shall be limited solely to the replacement of the defective goods. All weights stated in our catalogs and lists are approximate and are not guaranteed.
NOTICE: READ ENTIRE MANUAL PRIOR TO INSTALLING PRODUCT
Water Closet Models:
ZER6000AV-ONE-TM 1.1 gpf
ZER6000AV-HET-TM 1.28 gpf
ZER6000AV-WS1-TM 1.6 gpf
ZER6000AV-DF-TM 1.1/1.6 gpf
Urinal Models:
ZER6003AV-ULF-TM 0.125 gpf
ZER6003AV-EWS-TM 0.5 gpf
ZER6003AV-WS1-TM 1.0 gpf
AquaSense®
ZER-TM Series
Automatic Sensor-Operated Gear
Driven Type Flushometer for Water
Closets and Urinals
Installation,
Operation, Maintenance
and Parts Manual
Compliance:
• ADA Compliant
• ASSE 1037/ASME A112.1037/CSA B125.37
• cUPC
• Texas Accessibility Standard (TAS)
• WaterSense Compliant

FV669 Rev. G 06/22/22
Page 1
Required Tools
ZER-TM Series Flush Valve Package Contents
ZER6000AV-TM ZER6003AV-TM
Valve
Assembly
Valve
Assembly
Spud/Flush
Connection
Vacuum Breaker
11⁄2” Vacuum
Breaker Tube
Cast Wall Escutcheon
Vandal Cover
Stop Valve Stop Valve
Sweat Kit Sweat Kit
Spud/Flush
Connection
Vacuum Breaker
3⁄4“ Vacuum
Breaker Tube
Cast Wall Escutcheon
Vandal Cover
Batteries Batteries
3/32”, 5/64”
Allen Wrench
(Supplied)
Flat Head
Screwdriver
Smooth Jawed
Wrench
Phillips Head
Screwdriver
Strap Wrench
(Supplied)
Optional Accessories
N
G
A
M
I
C
E
T
G
A
M
Magic Magnet
P6900-AT-MAG

FV669 Rev. G 06/22/22
Page 2
Prior to Installation:
• The ZER-TM ushometer is designed to operate optimally between 25 psi (running) to 80 psi (static) water pressure (172 to 552
kPa). Higher running pressure may be required for some xtures. Consult xture manufacturer for details.
• When installing a ushometer, it is important that the ush volume matches the requirements of the plumbing xture.
• To protect chrome nish, do not use toothed tools to install or service the ushometer.
• Before installing your Zurn®Gear Driven Flush valve, the items listed below should already be installed on site:
- Closet or urinal xture
- Fixture carrier
- Drain line
- Water supply line
Overview:
Zurn Aqua-Sense® ZER-TM Series Flushometer o󰀨ers two models (closet/urinal) in a variety of ow rates. The ZER-TM
design is a chrome plated brass body with an automatic sensor-operated gear driven valve. The ushometer incorporates a
ltered bypass, high back pressure vacuum breaker, adjustable tailpiece, spud coupling, ange for top spud connection and an
electronic override pushbutton (MOB) for alternative ushing method. The control stop has internal siphon-guard protection,
vandal resistant stop cap, sweat solder kit, and cast wall ange with set screw. All internal and external gaskets and seals are
chloramine resistant.
NOTE: The information in this manual is subject to change at any time without notice. Installations may
be performed at di󰀨erent times of construction by di󰀨erent individuals. For this reason, these instructions
should be left on-site with the facility or maintenance manager.
Specications:
Voltage: 6 VDC Series [4 “AA” 1.5V Lithium Cells] or 6 VDC Series [4 “AA” 1.5V Alkaline Cells]
Sensor Range: Factory set for user at end of elongated bowl or eld adjustable by installer
Important Safety Information:
• Installer is responsible for ensuring the product is installed and conforms to all plumbing codes and ordinances.
• Do not convert or modify this Zurn product yourself. All warranties will be voided.
• Water supply lines must be sized according to building designer in order to provide adequate water supply for each xture.
• Flush all water lines prior to making connections.

FV669 Rev. G 06/22/22
Page 3
Sweat Solder Adapter Installation Instructions - STEP 1
Control Stop Installation Instructions - STEP 2
Figure 1 Figure 2
Figure 3 Figure 4
Figure 5 Figure 6
1. Measure distance from nished wall to the center line of the xture
spud. If necessary, cut water supply pipe 1-1/4” shorter than this
measurement. Deburr by chamfering O.D. and I.D of end of water
supply pipe.
NOTE: Before installation, turn o󰀨 water supplies to existing xture and remove ushometer if replacing an existing device.
Finished
Wall
Water Supply Pipe
Center Line
of Fixture
Spud
11⁄4“
Sweat Solder
Adapter
Set Screw
Chrome Cover Tube
Wall Escutcheon
Distance to
Measure
2. Slide threaded sweat solder adapter onto water supply pipe until
shoulder stops on end of pipe. Then sweat-solder the adapter to
water supply pipe.
3. Measure distance from nished wall to rst thread of sweat solder
adapter. If necessary, cut chrome cover tube this length.
4. Slide wall escutcheon over chrome cover tube and slide both
items over water supply pipe. Press wall escutcheon ush against
nished wall and tighten set screw with hex wrench (supplied) to
secure it in place.
Using a athead screwdriver,
turning counterclockwise, ush
supply line by opening the
control stop. Turning clockwise
will close control stop.
2 Gallon
1. Install control stop assembly by threading it onto water supply
pipe and tightening with a smooth jawed wrench. Apply thread
sealing compound or pipe tape to male NPT thread on sweat
solder adapter only.
2. When all stop valves are properly connected to the water
supply line and water pressure is available open the control
stop using a athead screwdriver and turning the stop valve
adjustment screw counterclockwise.
Prior to turning on main water supply line ensure all stop valves
are closed o󰀨 tight by using a athead screwdriver and turning
the stop valve adjustment screw clockwise.
Allow the water supply line to ush any debris or sediment that
may be present in the line. Close the control stop once the
lines are completely ushed.

FV669 Rev. G 06/22/22
Page 4
STEP 3.1
Prior to attaching ush valve to control stop(A) inspect and verify
that the O-ring (C) is located within the O-ring groove at the tailpiece.
Ensure the locking nut (D) and locking snap ring (E) are also present
on the tailpiece. See Figure 7.
STEP 3.2
Lubricate O-ring with water and carefully insert ush valve tailpiece
into the control stop valve to ensure O-ring remains seated. Tighten
locking nut using a smooth jawed wrench. See Figure 8.
Flush Valve Installation - STEP 3
STEP 3.3
Determine the length of vacuum breaker tube required to join the
ush valve and xture spud, and cut if necessary.
STEP 3.4
Slide the tube nut, spud nut, slip gasket, rubber gasket and spud
escutcheon over the vacuum breaker tube and insert tube into
xture spud. Hand tighten tube nut to valve body and hand
tighten spud nut onto xture spud. Adjust the valve assembly for
plumb. Tighten xture spud nut, vacuum breaker tube nut and
lock nut with a wrench.
Adjust and plumb the valve assembly. Tighten all connections with
smooth jawed wrench and turn on water supply at the control stop.
See Figure 9.
DO NOT use pipe sealant or plumbing grease on any valve
component or coupling with the exception of the Control Stop
Inlet! Ensure Vacuum Breaker does not twist or warp when
tightening Vacuum Breaker Tube Nut.
DO NOT cut vacuum breaker tube shorter than 6” below
the -C-L- indicator mark, as vacuum breaker must be 6” above
the xture. Consult plumbing Codes & Regulations for specic
details.
BA
E
C
D
A
B
D
Vacuum Breaker
Tube Nut
Spud Nut
Slip Gasket
Rubber Gasket
Spud Escutcheon
-C-L- Indicator
Figure 7 Figure 8
Figure 9
When installing the valve with the control stop on left side of the
valve, continue to install with the sensor facing the wall. After Step
3.4, go to the Sensor Angle Adjustment Section before advancing
to Step 4 - Battery Installation.

FV669 Rev. G 06/22/22
Page 5
Battery Installation - STEP 4
STEP 4.1
Use the 3/32” Allen Wrench to loosen the internal set screw
counter-clockwise until it stops. Screw will retract into the shell.
STEP 4.3
Flip the valve cap upside down on a at, soft surface. Loosen the
knurled screw by hand to remove the battery cap. Use at head
screwdriver to loosen knurled screw if necessary.
STEP 4.5
Insert four batteries (supplied) into battery housing and ensure the
batteries are inserted in the correct orientation. Use AA Lithium
Batteries or AA Alkaline batteries, but do not mix Lithium with Alkaline.
STEP 4.2
Remove the valve cap by turning it counter-clockwise and lifting
gently. Disconnect the wire harness before fully removing valve
cap.
STEP 4.4
Remove the battery cap from the battery housing.
STEP 4.6
See notes below and reverse steps 4.1 - 4.4 to reinstall battery
cap and valve cap onto valve body. Then, turn control stop back
on by turning counter-clockwise using a at head screw driver.
Note: Knurled screw on
battery cap should only
tighten by hand.
Note: During reassemble,
connectors between valve
cap and valve body should
be placed in the empty
place as shown below.
Figure 15B
318613-001
Figure 10 Figure 11
Figure 12 Figure 13
Figure 14 Figure 15A

FV669 Rev. G 06/22/22
Page 6
Location Marker
Figure 16B
Wall
Sensor Angle Adjustment (when necessary)
STEP 2
Before loosening the locking ring, make sure the strap wrench
and locking ring are completely dry so that the strap wrench has
the best grip possible on the locking ring.
Mark down Locking ring original position relative to valve body
with tape or marker. Loosen locking ring (See Figure 16) on
valve head using strap wrench (supplied) turning counter-
clockwise. If unable to loosen the locking ring with the strap
wrench. Then remove the valve cap from the valve head shown
in Step 4.1 & 4.2 of the Battery Installation Section. The supplied
strap wrench or a large wrench may be used on the ats of the
locking ring to loosen it.
STEP 1
Turn o󰀨 control stop using a at head screw driver turning
clockwise (See Figure 16). Then, use the electronic override
button to ush the water out of the ush valve.
STEP 3
Rotate ush valve head to adjust sensor angle. If the valve cap
was removed to loosen the locking ring, rotate the manifold to
have the location mark pointing perpendicular to the wall (Figure
16B).
STEP 4
Before tightening the locking ring, make sure the strap wrench
and locking ring are completely dry so that the strap wrench has
the best grip possible on the locking ring.
Tighten locking ring back to original position with strap wrench
(supplied) by turning clockwise.
STEP 5
Turn control stop back on by turning counter-clockwise using a
at head screw driver.
Locking Ring
Control Stop
Electronic
Override
Button
Figure 16A

FV669 Rev. G 06/22/22
Page 7
STEP 4
Place valve head with diaphragm kit back onto valve body.
Before tightening the locking ring, make sure the strap wrench
and locking ring are completely dry so that the strap wrench has
the best grip possible on the locking ring. Tighten locking ring
back to original position with strap wrench (supplied) by turning
clockwise.
STEP 5
Turn control stop back on by turning counter-clockwise using a
at head screw driver.
Orice
Diaphragm Kit
Manifold Stem
Volume
Control Ring
Diaphragm Replacement and Cleaning (when necessary)
STEP 1
Turn o󰀨 control stop using a at head screw driver turning
clockwise (See Figure 16 above). Then, use the electronic
override button to ush the water out of the ush valve.
STEP 2
Before loosening the locking ring, make sure the strap wrench
and locking ring are completely dry so that the strap wrench has
the best grip possible on the locking ring.
Mark down Locking ring original position relative to valve body
with tape or marker. Uninstall valve head by loosen locking ring
(See Figure 16 above) using strap wrench (supplied) turning
counter-clockwise.
STEP 3B - Replace Diaphragm Kit
Slide out existing diaphragm kit o󰀨 manifold stem. If the o-rings
are worn, replace them with the new o-rings provided in the
diaphragm repair kit. Then replace the old diaphragm kit with a
new diaphragm kit (of the same ow rate) into the valve body,
carefully orienting the orice opposite of the control stop. (There
is no need to replace the Volume Control Ring unless it is missing
or broken)
STEP 3A - Cleaning Diaphragm Kit
Slide out existing diaphragm kit o󰀨 manifold stem. Wash
diaphragm and orice thoroughly with water. Slide cleaned
diaphragm back on to manifold stem orienting the orice opposite
of the control stop. If cleaning diaphragm and orice do not
resolve issue, follow step 3B.
Do not to damage or enlarge orice. Doing so will result in
incorrect ush rate. Figure 17

FV669 Rev. G 06/22/22
Page 8
Retrot Installation Instruction
Figure 18A
Figure 18C
STEP 1
Turn o󰀨 control stop using a at head screw driver turning
clockwise. Then, use the electronic or manual override button or
manual handle to ush the water out of the ush valve.
STEP 2
Remove the existing valve cap/head and diaphragm kit from the
valve body to get the valve to either state shown in Figure 18A.
STEP 3
FOR ULF UNIVERSAL KIT ONLY: Loosen tailpiece nut from
control stop and slide tailpiece out of control stop. Locate
tailpiece tabs. If the valve body does not have tailpiece tabs
matching those in Figure 18B, then carefully insert the tailpiece
into the control stop, tighten the tailpiece nut, and proceed to
Step 4.
If tailpiece tabs are present, then press the Flow Restrictor into
the tailpiece, being sure to align the tabs with the pockets on the
Flow Restrictor. Carefully insert the tailpiece into the control stop
and tighten the tailpiece nut.
STEP 4
Ensure the Volume Control Ring is installed on the manifold
stem. Slide the diaphragm kit into the valve body, orienting the
orice opposite of the control stop. See Figure 18C.
STEP 5
Install valve head and diaphragm kit onto the valve body. Rotate
the valve head so the sensor window is facing outward. See
Sensor Angle Adjustment section if more detail is needed.
STEP 6
Before tightening the locking ring, make sure the strap wrench
and locking ring are completely dry so that the strap wrench has
the best grip possible on the locking ring.
Hand tighten the locking ring onto the valve body. If the locking
ring will not thread onto the valve body go to the Locking Ring
Change Section. Finish tightening the locking ring using the strap
wrench. Turn the locking ring at least 1/3 of a turn with the strap
wrench.
STEP 7 (if applicable)
Remove the Manual Handle. Place the Handle Cap Seal in the
Handle Cap and torque the handle cap in place.
STEP 8
Slowly turn on the control stop using a at head screw driver
turning counter-clockwise and check for leaks. If leaks occur,
tighten locking ring further. Go to Battery Installation section to
power on the unit and check for leaks once more after ushing
the valve. If you nd leaks are still present. Then remove the
valve cap from the valve head shown in Step 4.1 & 4.2 of the
Battery Installation Section. Use the supplied strap wrench or a
large wrench on the ats of the locking ring to tighten it.
Mating Pockets (X2)
Tailpiece Tabs (X2)
Figure 18B
Orice
Volume
Control Ring
Manifold Stem

FV669 Rev. G 06/22/22
Page 9
STEP 1
Take the additional locking ring from the retrot kit box and
thread it onto the valve body to ensure the threads match. If
the additional locking ring will not thread onto the valve contact
customer service for further instructions
STEP 2
Remove the diaphragm kit from the valve head if attached. Then
remove the valve cap from the valve head following Steps 4.1 &
4.2 of the Battery Installation Section.
STEP 3
Using a Phillips head screwdriver, turning counter clockwise
remove the 3 mounting screws shown in Figure 19 and remove
the ring insert from the manifold. Then remove the existing
locking ring from the manifold and install the new locking ring
onto the manifold.
STEP 4
Install the removed ring insert and using a Phillips head
screwdriver, turning clockwise tighten all 3 mounting screws.
Reassemble the valve cap to the manifold assembly following
Step 2 in reverse order.
STEP 5
Resume step 4 of the Retrot Installation Section.
Locking Ring Change Instruction
Mounting
Screws
Mounting
Screws
Ring Insert
Figure 20
Sensor Range Adjustment (when necessary)
STEP 1
Place a piece of cardboard or a light-colored target at desired
detection range away from sensor.
Note: When placing the target for a water closet consider that
when standing at the front of the bowl the sensor is focused on
the right upper thigh area.
STEP 2
Place the Zurn Magic Magnet (optional accessory: P6900-
AT-MAG) on top at surface (see Figure 20). Once magnet is
placed in the general area shown, the red status LED illuminates
continuously on for 5 seconds. The status LED will quickly ash
and then begin ashing once a second. The valve will then have
entered Calibration Mode and the magnet should be left in place
to automatically enter verication mode at the end of calibration.
Note: The target must be in position no later than the end of the
2nd ash after the rst quick ashes. The last 8 of 10 ashes will
determine the new detection range.
STEP 3
After 10 LED ashes followed by a double ash the new
detection range will be calibrated and set. If the Magnet was
not removed the range verication mode will automatically
commence.
STEP 4
During range verication mode repeatedly move the target away
and toward the sensor. When the target is within range the
status LED continuously illuminates. When the target is out of
range the status LED turns o󰀨. If range is satisfactory remove
the magnet and sensor resumes normal operation. If the range
is not satisfactory remove the magnet and repeat sensor range
adjustment at step 1
While in range verication mode, test calibrated sensor
range using targets of various material types/textures to ensure
calibration accuracy. Verify that sensor range does not detect
stall doors or other reective surfaces.
Figure 19