Acorn MERIDIAN 3752 CORTERRA Instruction manual

A C O R N E N G I N E E R I N G C O M P A N Y
P. O . B O X 3 5 2 7 • C I T Y O F I N D U S T R Y, C A 91 7 4 4 U . S . A .
T O L L F R E E 8 0 0 - 4 8 8 - 8 9 9 9 : : L O C A L 6 2 6 - 3 3 6 - 4 5 6 1
FA X 6 2 6 - 9 6 1 - 2 2 0 0 : : w w w. a c o r n e n g . c o m
A C O R N E N G I N E E R I N G C O M P A N Y
P. O . B O X 3 5 2 7 • C I T Y O F I N D U S T R Y, C A 91 7 4 4 U . S . A .
T O L L F R E E 8 0 0 - 4 8 8 - 8 9 9 9 : : L O C A L 6 2 6 - 3 3 6 - 4 5 6 1
FA X 6 2 6 - 9 6 1 - 2 2 0 0 : : w w w. a c o r n e n g . c o m
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 - 25
TABLE OF CONTENTS
Dimensional Data........................................4
Accessibility Comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Rough-Ins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 10
Cleaning and Maintenance................................26
Prior to Installation.......................................2
Installation.........................................11 - 19
Piezo Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-22
Components & Repair Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 -29
Warranty Information ....................................30
REQUIRED ITEMS FOR INSTALLATION - NOT SUPPLIED
MODEL
3752
®
MERIDIAN
®
CORTERRA
ADA-COMPLIANT
HI-LO DUAL BASIN
?Carpenters Level
?Hammer
?7/16" Hex Wrench
?Chalk Line
?1/2" NPS Supply Angle Stops An
?Plumbers Putty
?Teflon Tape
?#10 (10 Count) Fixture Wall Anchors and
Anchoring Hardware (and Appropriate Tools)
?3/8” (12 Count) Fixture Wall Anchors and
Anchoring Hardware (and Appropriate Tools)
ACORN ENGINEERING FIELD SERVICE
TOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX [phone]
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
Part #: 6215-370-000
Please visit www.acorneng.com
for most current specifications.
3752-HLL -HI-LO LEFT SIDE
HIGH SIDE CONFIGURATION
Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
TOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX [phone]
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
®
MERIDIAN 3752
Please visit www.acorneng.com
for most current specifications.
Single Temp Valve Assembly: Recommended working water pressure is 30 psi (2.07
bars) minimum to 100 psi (6.89 bars) maximum. Maximum temperature is 130°F
(54.4°C). Maximum outlet temperature is recommended is 105°F (40.6°C). Valve
assembly must be drained prior to being subjected to freezing temperatures. A
checkstop is provided with this valve assembly.
Prior to installation, supply lines must be flushed of all foreign material such as pipe
dope, chips, or solder. Debris or foreign material in water supply may damage valve.
ANSI, UFAS or ADA compliance is subject to the interpretation and requirements of the
local code authority and is the responsibility of the installer for verification.
NOTE: Receptacle(s) must be wired to a GFCI protected circuit. Fixture must be earth
grounded per N.E.C. (National Electrical Code).
Teflon tape is recommended on all threaded waste and supply connections to reduce the
possibility of leaks.
T/P Mixing Valve Assembly: Recommended working water pressure is 30 psi (2.07 bars)
minimum to 125 psi (8.62 bars) maximum. Maximum hot water temperature is 180°F
(82°C). Temperature adjustment range is 85-115°F (29-46°C). Valve assembly must be
drained prior to being subjected to freezing temperatures. The valve assembly has
checks integral to the inlets however, angle stops are to be provided by the installer.
Industry standard wall backing, for wall hung fixtures, is required. Installer provided wall
anchors and wall anchoring hardware must be appropriate for wall construction, and
have a minimum pull-out rating of 1000 lbs. (453.6 kg).
Provide 110-120VAC/60Hz/3A (MAX) electrical receptacle for factory supplied
120VAC/9VDC, 100mA plug-in transformer.
Important: Some options may slightly alter installation. To ensure proper installation
review the manual thoroughly and verify rough-ins before beginning any work. File this
manual with the owner or maintenance personnel upon completion of installation.
Page 2 of 30
Part #: 6215-370-000 Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
TOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX [phone]
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
®
MERIDIAN 3752
Please visit www.acorneng.com
for most current specifications.
Page 3 of 30
Part #: 6215-370-000
ACCESSIBILITY COMPARISONS
ADA ages
6 thru 12
ADA
Adult
OBC
22"
143
4"
2"
34" Rim
Max.
27"
Min.
5"
143
8"
245
8"
22"
2"
33" Rim
Max.
29"
Min.
133
8"
245
8"
245
8"
113
8"
31" Rim
Max.
2"
24"
Min.
5"
22"
143
4"
143
4"
5"
Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
TOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX [phone]
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
®
MERIDIAN 3752
Please visit www.acorneng.com
for most current specifications.
Page 4 of 30
DIMENSIONAL DATA
Part #: 6215-370-000
3752-HLR SHOWN
15" 30"
60"
22"
30"
4"
205
8"
3752-HLL OPPOSITE
Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
TOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX [phone]
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
®
MERIDIAN 3752
Please visit www.acorneng.com
for most current specifications.
Page 5 of 30
ROUGH-IN DIMENSIONS -ADA (Adult)
MOUNTING PLUMBING
E - Wall Anchoring for .219" Diameter x 3/8" Long, Enclosure Mounting Slots,10 Places.
D - 120VAC, 60 Hz, 3A (Max.) GFCI Protected, Electrical Receptacle.
A - Wall Anchoring for .563" Diameter x 1" Long, Angle Bracket Mounting Slots, 8 Places.
C - Waste Outlet for 1-1/2" O.D. P-Trap Provided.
B - Supply Stub-Outs with Stops for Valve 1/2" NPT Hot & Cold Supply Inlets.
F - Valve Mounting Area.
Part #: 6215-370-000
3752-HLR SHOWN
3752-HLL OPPOSITE
C
261
2"
F
D
E
EE
E
A
A
4" TYP
2"
5"
9" 71
2"
A
D
C
B
B
15"
311
2"
60"
A
23"
61
4"
34" Rim
Max.
4"
171
2"
22"
30" 22"
4"
4"
E
E
E
EE
E
261
2"
13
4"
131
4"
13
4"
57
8"
213
8"
15"
161
8"
131
4"
19"
Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
TOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX [phone]
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
®
MERIDIAN 3752
Please visit www.acorneng.com
for most current specifications.
Page 6 of 30
ROUGH-IN DIMENSIONS -ADA (Adult)
MOUNTING PLUMBING
A - Wall Anchoring for .563" Diameter x 1" Long, Angle Bracket Mounting Slots, 8 Places.
B - Supply Stub-Outs with Stops for Valve 1/2" NPT Hot & Cold Supply Inlets.
C - Waste Outlet for 1-1/2" O.D. P-Trap Provided.
D - 120VAC, 60 Hz, 3A (Max.) GFCI Protected, Electrical Receptacle.
E - Wall Anchoring for .219" Diameter x 3/8" Long, Enclosure Mounting Slots,10 Places.
F - Valve Mounting Area.
Part #: 6215-370-000
3752-HLL SHOWN
3752-HLR OPPOSITE
C
261
2"
F
D
E
E
E
E
AA
4" TYP 2"
5"
9"
71
2"
A
D
C
BB
15"
311
2"
60"
A
23"
61
4"
34" Rim
Max.
4"
171
2"
22"
30"
22"
4"
4"
E
E
E
E E
E
261
2"
13
4"
131
4"13
4"
57
8"
213
8"
15"
161
8"
131
4"
19"
Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
TOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX [phone]
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
®
MERIDIAN 3752
Please visit www.acorneng.com
for most current specifications.
Page 7 of 30
ROUGH-IN DIMENSIONS -ADA
AGES 6 THRU 12 YEARS
MOUNTING PLUMBING
F - Valve Mounting Area.
E - Wall Anchoring for .219" Diameter x 3/8" Long, Enclosure Mounting Slots,10 Places.
A - Wall Anchoring for .563" Diameter x 1" Long, Angle Bracket Mounting Slots, 8 Places.
C - Waste Outlet for 1-1/2" O.D. P-Trap Provided.
B - Supply Stub-Outs with Stops for Valve 1/2" NPT Hot & Cold Supply Inlets.
D - 120VAC, 60 Hz, 3A (Max.) GFCI Protected, Electrical Receptacle.
Part #: 6215-370-000
3752-HLR SHOWN
3752-HLL OPPOSITE
C
261
2"
F
D
E
EE
E
A
A
4" TYP
2"
5"
9" 71
2"
A
D
C
B
B
15"
281
2"
60"
A
20"
61
4"
31" Rim
Max.
4"
141
2"
22"
30" 22"
4"
4"
E
E
E
EE
E
261
2"
13
4"
131
4"
13
4"
57
8"
183
8"
15"
131
8"
131
4"
16"
Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
TOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX [phone]
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
®
MERIDIAN 3752
Please visit www.acorneng.com
for most current specifications.
Page 8 of 30
ROUGH-IN DIMENSIONS -ADA
AGES 6 THRU 12 YEARS
MOUNTING PLUMBING
A - Wall Anchoring for .563" Diameter x 1" Long, Angle Bracket Mounting Slots, 8 Places.
C - Waste Outlet for 1-1/2" O.D. P-Trap Provided.
D - 120VAC, 60 Hz, 3A (Max.) GFCI Protected, Electrical Receptacle.
E - Wall Anchoring for .219" Diameter x 3/8" Long, Enclosure Mounting Slots,10 Places.
B - Supply Stub-Outs with Stops for Valve 1/2" NPT Hot & Cold Supply Inlets.
F - Valve Mounting Area.
Part #: 6215-370-000
3752-HLL SHOWN
3752-HLR OPPOSITE
C
261
2"
F
D
E
E
E
E
AA
4" TYP 2"
5"
9"
71
2"
A
D
C
BB
15"
281
2"
60"
A
20"
61
4"
31" Rim
Max.
4"
141
2"
22"
30"
22"
4"
4"
E
E
E
E E
E
261
2"
13
4"
131
4"13
4"
57
8"
183
8"
15"
131
8"
131
4"
16"
Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
TOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX [phone]
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
®
MERIDIAN 3752
Please visit www.acorneng.com
for most current specifications.
Page 9 of 30
MOUNTING PLUMBING
F - Valve Mounting Area.
A - Wall Anchoring for .563" Diameter x 1" Long, Angle Bracket Mounting Slots, 8 Places.
B - Supply Stub-Outs with Stops for Valve 1/2" NPT Hot & Cold Supply Inlets.
C - Waste Outlet for 1-1/2" O.D. P-Trap Provided.
D - 120VAC, 60 Hz, 3A (Max.) GFCI Protected, Electrical Receptacle.
E - Wall Anchoring for .219" Diameter x 3/8" Long, Enclosure Mounting Slots,10 Places.
Part #: 6215-370-000
3752-HLR SHOWN
3752-HLL OPPOSITE
ROUGH-IN DIMENSIONS -OBC
ONTARIO BUILDING CODE
4" TYP
161
2"
22"
33" Rim
Max.
6"
22"
30" 22"
60"
4"
4"
4"
33"
2"
5"
9"
15"
71
2"
18"
AA
AA
D
C
BB
15"
131
4" 261
2"
13
4"
C
151
8"263
8"
F
D
E
E
E
EE
E
E
E
E
E
131
4"
13
4"
6"
203
8"
Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
TOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX [phone]
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
®
MERIDIAN 3752
Please visit www.acorneng.com
for most current specifications.
Page 10 of 30
ROUGH-IN DIMENSIONS -OBC
ONTARIO BUILDING CODE
MOUNTING PLUMBING
A - Wall Anchoring for .563" Diameter x 1" Long, Angle Bracket Mounting Slots, 8 Places.
B - Supply Stub-Outs with Stops for Valve 1/2" NPT Hot & Cold Supply Inlets.
E - Wall Anchoring for .219" Diameter x 3/8" Long, Enclosure Mounting Slots,10 Places.
D - 120VAC, 60 Hz, 3A (Max.) GFCI Protected, Electrical Receptacle.
F - Valve Mounting Area.
C - Waste Outlet for 1-1/2" O.D. P-Trap Provided.
Part #: 6215-370-000
3752-HLL SHOWN
3752-HLR OPPOSITE
4" TYP
161
2"
22"
33" Rim
Max.
6"
22"
30"
22"
60"
4"
4"
4"
33"
2"
5"
9"
15"
71
2"
18"
A
A
A
A
D
C
B
B
15"
131
4"261
2"
13
4"
C
151
8"
263
8"
F
D
E
E
E
E E
EE
EE
E
131
4"13
4"
6"
203
8"
Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
TOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX [phone]
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
®
MERIDIAN 3752
Please visit www.acorneng.com
for most current specifications.
FIXTURE ANCHORING
Part #: 6215-370-000 Page 11 of 30
mounting brackets pre-installed
onto the fixture.
FYI: Fixtures are shipped with wall
3
1
44
2
14
2
Secure compliant station portions of fixture 2 , (ADA, OBC etc...) to mounted angle brackets 1 with
¼-20 hex head cap screws, lock washers and fender washers 4 provided.
Secure remaining mounted angle brackets 3 to wall & starting with the flat or requirement portion
Place fixture on mounted angle brackets 1 and align the remaining mounted angle brackets 3 with
installed wall anchors. Fasten to wall loosely and proceed to step D.
of fixture 2 adjust and level as required. Do not over tighten.
C.
D.
E.
NOTE: It may be advantageous to install to the deck, faucets, soap
dispensers or other accessories prior to wall mounting.
Angle brackets 1 from compliant station of
fixture 2 . Loosen remaining angle brackets
3 but keep finger tight.
Disassemble fixture from crate and remove
A.
Anchor the free angle brackets 1 to
finished wall using installer provided ½”
anchoring hardware (4 places). Level and
plumb as required. All wall anchors and wall
anchoring hardware are by others.
B.
!IMPORTANT
Compliant station portion of fixture refers to
station(s) that are intended to meet ADA,
OBC or other accessibility standards required.
Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
®
MERIDIAN 3752
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1
2
3
4
4
3
5
HINT: Teflon tape is recommended on all threaded waste and
supply connections.
NOTE: Continuous waste assembly will require field cutting and
fitting by the installer.
À Grid Strainer w/ 1-1/2" -16
UNE Threads
 Flat Fiber Washer
Ä 1-1/2"-16 x 1-1/4" UNI Close Ell
with 3/8" NPT Clean-Out Plug
Á Rubber Gasket
à 1-1/2" -16 UNI Rough Chrome
Brass Jam Nut
Page 12 of 30
install grid strainer and close elbow to bowl using
plumber's putty.
A.
Assemble continuous waste piping using teflon
tape on all threaded connections and make up
waste connections to 1-1/2” P-Trap.
B.
6"
6"
3"
5"
30"
Part #: 6215-370-000 Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
TOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX [phone]
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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MERIDIAN 3752
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for most current specifications.
Page 13 of 30
Part #: 6215-370-000
1/2" SPOUT HOSE
1/2" HOSE x
1/4" NPT
ADAPTER 1/4" NPT x 1/4" O.D.
TUBE ADAPTER
1/4" PE O.D. TUBING
NUT
WASHERS
PUSH-IN FITTING INSTALLATION
NOTE: FITTINGS AND TUBE SHOULD BE KEPT
CLEAN, BAGGED AND UNDAMAGED PRIOR TO
INSTALLATION.
3. Pull on the fitted tubing to ensure it is secure. Tube
should not come free from the fitting. Water test the
connection assembly prior to leaving the site to ensure
there are no leaks.
4. To disconnect the tube from the fitting ensure that the
water supply is off. Push collet square towards the
push-in fitting body and hold. While holding the collet in,
pull on the PE tubing to remove from the push-in fitting.
1. Cut to fit length of 1/4” PE tubing and remove any burrs
or sharp edges. Ensure that the outside diameter is free
from score marks. Tube ends should be square.
2. Firmly and fully insert the tubing end into the push-in
fitting up to the tube stop located approximately 1/2”
deep.
1.
2.
3.
4.
SPOUT INSTALLATION
2. Assemble hose adapter to tube adapter and connect
to spout hose.
3. Connect 1/4” O.D. PE tubing from valve.
1. Assemble spout to deck securing it with nut.
ADAPTER
TUBE STOP
1/4" PE TUBING
COLLET
HOSE
COLLET
Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
®
MERIDIAN 3752
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for most current specifications.
NOTE: Installation should be in accordance with
accepted plumbing practices.
1) Locate suitable place for mounting the valve
assembly. Valve assembly should be
accessible for service and adjustment and
as close to the point-of-use as possible.
Wall anchors and anchoring hardware, for
Ø 3/8” mounting holes, provided by installer.
4) Turn on hot and cold water supplies. If any
leaks are observed, hand tighten
connections as necessary to stop leaks
before proceeding.
2) Connect hot and cold water to supply
valve using 1/2” NPTE connections.
3) Connect outlet of tempering valve to
spout(s) using 1/2” NPT connections
provided.
5) Turn on fixture and allow water to flow for 2
minutes. Measure water temperature at
outlet. If water is not at desired temperature,
adjust as necessary.
1) Loosen locknut.
2) Turn on fixture and run water for at least 2
minutes. Allow supply temperature to
stabilize.
3) Turn temperature stem counter-clockwise
for hotter or clockwise for colder outlet
temperature.
4) Tighten locknut to prevent accidental or
unauthorized temperature adjustment.
5) Re-check outlet temperature.
Temperature Adjustment:
Valve Assembly Installation:
VALVE INSTALLATION & ADJUSTMENT
!IMPORTANT
Flush supply lines of all foreign material such
as pipe dope, pipe chips, solder, sand etc.
before making up supply connections.
HINT: Angle stops are recommended
and is the responsibility of the installer.
Page 14 of 30
Part #: 6215-370-000
LOCKNUT
WARMER
TEMPERATURE
STEM
Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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MERIDIAN 3752
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To service or install batteries
remove access panel by
removing (4) 10-32 x 3/4"
screws from front of fixture
using allen head bit provided
(socket & driver by others).
Replace access panel when
finished.
-SO-BAT
Sensor Operation Battery Powered
SENSOR OPERATION & CONNECTIONS -BATTERY OP
Acorn does not provide batteries for -BAT units.
Each station requires (6) AA batteries.
Page 15 of 30
Part #: 6215-370-000 Revised: 03/05/19
-SO SENSOR
-PPZ PUSHBUTTON
RED BLUE
RED
BLUE
TRANSFORMER
SOLENOID VALVE

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MERIDIAN 3752
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Ferrule Nut
1/4"
Min.
Ferrule
Nut
-H Hand Operated
1/8" O.D. AIR TUBE
1/4" O.D. WATER LINE
Leave a minimum 1/4” of polyethylene tubing
through the Ferrule Nut on the pushbutton
assembly. This is necessary to ensure proper
tubing connection.
turn timing screw.
Timing Screw
To adjust timing,
HAND OPERATION & CONNECTIONS
Turn timing screw clockwise to
increase timing.
Do not over tighten
ferrule nuts.
Page 16 of 30
Part #: 6215-370-000 Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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MERIDIAN 3752
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-SO Sensor Operation
Range Adjustment
4. Move hand to desired sensing distance.
See DETAIL B.
3. Move hand in front of sensor to distance of 2” to 4”
within 5 seconds and wait until red light flashes
quickly.
5. Hold hand at desired sensing distance until red light
stops flashing and solenoid activates.
See DETAIL C.
1. Make sure power supply is disconnected from
sensor and make short circuit on red wires.
See DETAIL A.
2. Connect power supply to sensor. Red light should
be flashing.
DETAIL A
DETAIL B
DETAIL C
Transformer must
be plugged into a
GFI protected
circuit. Fixture must
be earth grounded
per N.E.C. or
applicable codes.
Jumper
By Others
-SO Sensor Operation or -PPZ Programmable Piezo Pushbutton
SENSOR OPERATION & CONNECTIONS
Page 17 of 30
Part #: 6215-370-000 Revised: 03/05/19
-SO SENSOR
-PPZ PUSHBUTTON
RED BLUE
RED
BLUE
TRANSFORMER
SOLENOID VALVE

ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
®
MERIDIAN 3752
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ACCESS PANEL INSTALLATION
Page 18 of 30
5
8
7
6
HINT: It may be advantages to install deck
trim such as faucets, soap dispensers or
other accessories prior to wall mounting.
Position bridge enclosure 5 over combined waste and accessory
tubing and secure to wall.
All wall anchors and anchoring hardware provided by others.
HINT: For installation convenience: Trap
enclosure support flanges 6 are intended to
slide over support tabs 7 on angle brackets
while securing enclosures to the wall.
Position station enclosures 8 aligning mounting points and secure
with installer provided hardware.
Part #: 6215-370-000 Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
TOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX [phone]
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
®
MERIDIAN 3752
Please visit www.acorneng.com
for most current specifications.
OPTIONAL ACCESSORY INSTALLATION & ASSEMBLY
HINT: For best results, install soap
reservoir directly below soap filler hole on
deck with refill tube as short and straight
as possible.
Some soaps contain corrosive additives that can cause rust in
soap dispensers. Acorn Engineering Company recommends
user/ maintenance personnel review MSDS reports of soap and
possible corrosive additives noted.
!WARNING
Page 19 of 30
Anti-Rotation
Pin
Rubber
Gasket
Washer
Black end of
Check Valve
Direction
of Flow
3/8" Nut
3/8" O.D.
Tube
Mounting
Bracket
Install soap reservoir to wall inside trap enclosure
using mounting brackets provided as shown. Wall
anchors and anchoring hardware provided by
installer.
A.
Install soap filler assembly to deck as shown.
B.
Attach 1-1/4" O.D. refill tube to soap filler
assembly and soap reservoir with provided hose
clamps.
C. Install soap dispenser(s) onto deck by aligning
Anti-Rotation Pin with Key Hole. NOTE: Gasket
and Washer are located beneath the deck.
D.
Attach 3/8" O.D. Tubing to the dispenser(s) and
reservoir. NOTE: Check Valve must be field
spliced into tubing and installed with respect to
direction of flow.
E.
Soap Filler
Plug
Rubber Gasket
3/8" O.D.
Tubing
Part #: 6215-370-000 Revised: 03/05/19

ACORN ENGINEERING FIELD SERVICE
TOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX [phone]
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
Please visit www.acorneng.com
for most current specifications.
Programable Piezo Pushbutton
Programming Instructions (Flow Time Adjustment)
— 20 second timing mode: Each push of the button adds 20 seconds to the total timing cycle.
THE TIME SETTINGS PROGRAM USES 3 DIFFERENT TIMING MODES:
Prevision must be made to access the back of the piezo pushbutton. There is an LED on the back of the piezo
pushbutton under a layer of transparent epoxy, used as a programming indicator light.
— When a timing mode is not required then do not push the button and wait for the next timing mode.
To move on to the 20 sec timing mode, pause and wait for the LED to flash 3 times, now you are in the 20 sec timing
mode and each time the button is pushed the LED will flash, adding 20 sec to the total timing cycle. After programing
is complete, pause and wait for the LED to flash 4 times and then 5 times, which completes the programming.
To program the piezo pushbutton, you will need to be able to see the back of the piezo pushbutton.
— 5 second timing mode: Each push of the button adds 5 seconds to the total timing cycle.
As soon as the cable is reconnected the LED will start flashing, it will flash 4 times, then stays on for 3 seconds.
During the 3 second period, push the piezo button once, the LED will go out, now you are in the 1 sec timing mode
and each time the button is pushed the LED will flash, adding 1 sec to the total timing cycle.
To move on to the 5 sec timing mode, pause and wait for the LED to flash 2 times, now you are in the 5 sec timing
mode. Each time the button is pushed the LED will flash, adding 5 sec to the total timing cycle.
— Each timing mode (1 sec, 5 sec or 20 sec timing mode) can be sequenced up to 100 times, that is
the number of times, the button can be pushed, to increase the total timing cycle in each timing mode.
— 1 second timing mode: Each push of the button adds 1 second to the total timing cycle.
In order to start the programming the piezo pushbutton, the button must be powered down. Disconnect the red power
cable and wait 20 seconds, then reconnect the red power cable.
NOTE: This programming procedure moves along rapidly, there is
only about 2 or 3 seconds between programming operations.
The Button is factory set an 8 sec. timing cycle, if an 8 sec. cycle is adequate, then no programming adjustment
is required.
NOTE: Read the entire document before
trying to program the piezo pushbutton.
Part #: 6215-370-000 Page 20 of 30
®
MERIDIAN 3752
Revised: 03/05/19