Installation Guide

When Retrofitting an Existing Valve, Start Here
Step 5 — Remove Components from Existing Flushometer
(RESS Retrofit
Installations Only)
(Figure 8)
5A. Remove Control Stop Cap.
5B. Turn off water supply at Control
Stop. Push Valve Handle to
relieve water pressure.
5C. Remove Outside and Inside
Covers and old Inside Parts Kit.
5D. Remove old Handle
Assembly and Gasket.
NOTE: Tail O-ring
An extra H-533 Tail O-ring is included in the event leakage occurs if the
valve is repositioned during the installation of the new Optima Plus. Use only
as needed.
Install Handle Cap (Figure 8, Item 5E)
Install Chrome Handle Cap with Gasket to handle opening on Flushometer
body. Tighten Chrome Handle Cap securely.
NNoottee::
This step is required for Retrofit Installations ONLY.
Step 6 — Optima Plus G2 Flush Volume
For RESS-C and RESS-U Retrofit Models
The Flush Volume of the Optima Plus is controlled by the Regulator in the
Flex Tube Diaphragm Kit. Regulators are identified by color.
Reference Chart
Fixture & Flush Regulator
Color
0.5 gpf (1.9 Lpf) Urinal Green
1.0 gpf (3.8 Lpf) Urinal Green
1.5 gpf (5.7 Lpf) Urinal Black
1.6 gpf (6.0 Lpf) Closet Green
3.5 gpf (13.2 Lpf) Closet White
4.5 gpf (17.0 Lpf) Closet White
3.5 gpf (13.2 Lpf) Urinal White
2.4 gpf (9.0 Lpf) Closet Blue
Note: For a 4.5 gpf (17.0 Lpf) Water Closet flush use the EBV-1020-A kit
with the White Regulator. Cut and remove the A-164 Flow Ring from the
Guide.
Note: A 0.5 gpf (1.9 Lpf) Urinal kit can be converted to a 1.0 gpf (3.8 Lpf)
by cutting and removing the smooth A-164 Flow Ring from the Guide.
RESS-C and RESS-U G2 Optima Plus valves are supplied with multiple
Regulators to address multiple flushing applications. The product is shipped
with it’s lowest flush volume configuration. To convert the flush to a higher
flushing volume, simply change the Regulator.
When installing a new Regulator on a Flex Tube Diaphragm Kit, be sure to
push the Regulator past the O-ring when installing.
Note: Never use more water than needed. Low Consumption water closets
and urinals will not function properly on excess water.
Step 7 — Assemble Flex Tube Diaphragm to Optima Plus
Assembly (Figure 9)
Remove Tab at underside of Optima Plus Assembly. Insert metal end of Flex
Tube into the hole at underside of Optima Plus Assembly. The O-ring must
be fully inserted into the hole. Push the Diaphragm securely against
underside of Optima Plus Assembly. Place entire Assembly onto the Valve
Body.
NNoottee::
Sensor Lens must face directly forward. Rotating the Sensor to either
side will decrease the Sensor’s ability to detect a target.
TIGHTEN LOCKING RING (Figure 10)
Thread Locking Ring onto Valve Body. Use Strap Wrench provided to tightly
secure Locking Ring.
IImmppoorrttaanntt::
The Locking Ring must
be installed down past the valve
body threads by at least one thread.
If difficulty is experienced installing
the Locking Ring, turn the Locking
Ring back and forth, each time
working it further down the threads.
The Locking Ring will act as a thread
chaser in the event there has been a
build-up of matter on the threads of
the old valve body.
If retrofitting the G2 Optima Plus onto a Zurn valve body, a special
Locking Ring must be used (identified by a machined groove around
the ring).
Order the G2 Optima Plus with the “Z” variation to receive the unit
supplied with this Ring.
Step 8 — Remove Tab to Activate Sensor Module
(Figure 11)
Remove the Tab located over
the Override Button to activate
the Sensor Module. For the first
ten (10) minutes of operation, a
Visible Red Light flashes in the
Sensing Window of the Optima
Plus Flushometer when a user
is detected.
4
Figure 9
MAKE SURE FLUSH
VOLUME REGULATOR
IS INSTALLED PAST
O-RING
O-RING
OPTIMA PLUS
ASSEMBLY
INSERT METAL END
INTO HOLE IN BASE
OF OPTIMA PLUS
ASSEMBLY
VALVE
BODY
FLEX TUBE
DIAPHRAGM
B
INSTALL
ASSEMBLY
ONTO VALVE
BODY
C
D
REMOVE
TAB
A
Figure 10
REMOVE TAB TO
ACTIVATE SENSOR
MODULE
Figure 11
Figure 8
5C
5E
5D
5A
5B
RESS Series Installations only
H-533
TAIL O-RING
0-RING
REGULATOR
(MUST BE INSTALLED
PAST 0-RING)
FLEX TUBE
DIAPHRAGM