FV486 Rev. D 7/16/18
Page 4
7. Adjust feature settings as desired. The sensor range is factory set
to 48”. If adjustment is necessary, use a phillips head screwdriver
and turn GENTLY. SEE SENSOR RANGE ADJUSTMENT. Replace
electronics access cover and tighten securely with vandal-resistant
hex wrench. Turn water supply on and reinsert stop cover button.
Check to assure cover is leak free.
Sensor Range Adjustment
The range is factory set for closet applications. If necessary, the sensor
range can be adjusted. Pressing the reset button will initiate a ten minute
set-up period. During these ten minutes a red light will flash through the
sensor lens when an object is in view of the sensor. Use this feature
to properly set the sensor range. Slowly rotate the range adjustment
clockwise to increase range and counterclockwise to decrease range.
The range adjustment will stop at minimum and maximum settings. Do
not turn beyond these stops. For an additional ten minutes of blinking,
push reset button. Stand in front of sensor (minimum 10 seconds) and
move forward and backward to determine range.
Switch 1 - Flush Time- Factory setting - “ON” (1.6 gpf/1.1 gpf)
“OFF”
Switch 2 - 24 Hour Flush - The unit will automatically flush 24 hours
after the last user. On position = activate,Off position = deactivate.
7
Decrease
Range
Increase
Range
Range Adjustment
On-Off Switches
Reset Button
5. Loosen handle nut, aim sensor at desired tilt angle (horizontal, tilt
up, or tilt down), hold in place and tighten handle nut
6. Remove electronics access cover (M) with vandal-resistant hex
wrench (N) provided. Insert preassembled battery holder into elec-
tronics compartment. Connect battery cable connector to electronics
cable connector.
(Important: Insert non-connector end of battery
holder first, as shown. Ensure foam spacer is in place)
8.For those installations that have ideal conditions for increasing the
water conservation of both the high and low volume flushes, a second
(red) water saving volume control is included with the unit and can
be installed at the owner’s option. The red volume control is stored
inside the housing beside the sensor.
9.A wall sign has been furnished with this product to inform the user of
its operations. Position the wall sign over the flush valve approxi-
mately 40” above the toilet.
10.RECOMMENDED EVACUATION TEST
• Obtain 8 ft toilet paper
• Fold in 4” lengths
• Place toilet paper bundle at edge of water in toilet such that
bundle is partially exposed to water
• Press green manual override button for reduced flush
• 100% evacuation-pass
• <100% evacuation: check supply line and stop for obstruction;
otherwise, system is not suitable for DF feature. If applicable,
re-install yellow volume control and retest.
Range Adjustment
On-Off Switches
Reset Button
Switch 1 - 24 Hour Flush
- The unit will automatically flush 24 hours
after the last user. On position = activate,Off position = deactivate.
Switch 2 - Courtesy Flush
- When an obhect has been detected for 2
seconds, the unit flushes then goes into normal mod. On position =
activate,Off position = deactivate. (Always press reset button after
changing switches.)
Switch 3 - Flush Time
- Factory setting
Switch 4 - Urinal Water Saver
- Reduces flush volume by 40% during
periods of continuous usage.
ZRK
ZRK-DF
Reference
Illustration
8
8a
8b
Adjust sensor
angle to pick
up user
Tilt Down
Horizontal
Tilt Up
5
Shown with ZRK-C
6
M
N
Phillips Head
Screwdriver
