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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
Please visit www.acorneng.com for most current specifications.
MERIDIAN
MODEL
3752
CORTERRA
ADA-COMPLIANT
HI-LO DUAL BASIN
3752-HLL -HI-LO LEFT SIDE
HIGH SIDE CONFIGURATION
TABLE OF CONTENTS
Prior to Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Accessibility Comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Rough-Ins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 10
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 19
Piezo Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-22
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 - 25
Cleaning and Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Components & Repair Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 -29
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
REQUIRED ITEMS FOR INSTALLATION - NOT SUPPLIED
?
Chalk Line
?
Teflon Tape
?
?
?
?
3/8” (12 Count) Fixture Wall Anchors and
Anchoring Hardware (and Appropriate Tools)
?
#10 (10 Count) Fixture Wall Anchors and
Anchoring Hardware (and Appropriate Tools)
?
?
Hammer
Carpenters Level
1/2" NPS Supply Angle Stops An
7/16" Hex Wrench
Plumbers Putty
Part #: 6215-370-000 Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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MERIDIAN 3752
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.
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).
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.
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.
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.
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.
Teflon tape is recommended on all threaded waste and supply connections to reduce the possibility of leaks.
Provide 110-120VAC/60Hz/3A (MAX) electrical receptacle for factory supplied
120VAC/9VDC, 100mA plug-in transformer.
NOTE: Receptacle(s) must be wired to a GFCI protected circuit. Fixture must be earth grounded per N.E.C. (National Electrical Code).
Part #: 6215-370-000
Page 2 of 30
Revised: 04/01/14
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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ACCESSIBILITY COMPARISONS
22"
14
3
4
"
22"
MERIDIAN 3752
14
3
4
"
2"
2"
24
5
8
"
24
5
8
"
5"
27"
Min.
34" Rim
Max.
5"
24"
Min.
31" Rim
Max.
14
3
8
"
11
3
8
"
ADA
Adult
ADA ages
6 thru 12
22"
14
3
4
"
2"
24
5
8
"
5"
13
3
8
"
Part #: 6215-370-000
OBC
29"
Min.
33" Rim
Max.
Page 3 of 30
Revised: 04/01/14
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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DIMENSIONAL DATA
MERIDIAN 3752
15"
60"
30"
22"
30"
4"
20
5
8
"
Part #: 6215-370-000
3752-HLR SHOWN
3752-HLL OPPOSITE
Page 4 of 30
Revised: 04/01/14
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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ROUGH-IN DIMENSIONS -ADA (Adult)
60"
30"
4"
22"
4"
22"
MERIDIAN 3752
A
A
4"
6
1
4
"
34" Rim
Max.
23"
19"
D
A
2"
C
9"
A
4" TYP
15"
5"
B
7
1
2
"
B
17
1
2
"
31
1
2
"
13
1
4
"
1
3
4
"
26
1
2
"
15"
E
E
D
C
E E
F
E
E
E
5
7
8
"
E
1
3
4
"
21
3
8
"
E
E
16
1
8
"
26
1
2
"
13
1
4
"
3752-HLR SHOWN
3752-HLL OPPOSITE
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
Page 5 of 30
Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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ROUGH-IN DIMENSIONS -ADA (Adult)
60"
22" 30"
4"
22"
4"
MERIDIAN 3752
A
4"
A
31
1
2
"
17
1
2
"
A
4" TYP
15"
5"
B B
7
1
2
"
2"
C
9"
A
D
6
1
4
"
19"
23"
34" Rim
Max.
26
1
2
"
1
3
4
"
13
1
4
"
E
E
E E
5
7
8
"
E
E
E
E
F
21
3
8
"
1
3
4
"
C
D
E
E
15"
13
1
4
"
26
1
2
"
16
1
8
"
3752-HLL SHOWN
3752-HLR OPPOSITE
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
Page 6 of 30
Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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ROUGH-IN DIMENSIONS -ADA
AGES 6 THRU 12 YEARS
60"
30"
4"
22"
4"
22"
MERIDIAN 3752
A
A
4"
6
1
4
"
31" Rim
Max.
20"
16"
D
A
2"
C
9"
A
4" TYP
15"
5"
B
7
1
2
"
B
14
1
2
"
28
1
2
"
13
1
4
"
1
3
4
"
26
1
2
"
15"
13
1
8
"
E
E
D
C
26
1
2
"
E
E
F
E
E
E
5
7
8
"
E
1
3
4
"
18
3
8
"
E
13
1
4
"
E
3752-HLR SHOWN
3752-HLL OPPOSITE
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
Page 7 of 30
Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
Please visit www.acorneng.com for most current specifications.
ROUGH-IN DIMENSIONS -ADA
AGES 6 THRU 12 YEARS
60"
22"
4"
4"
30"
22"
MERIDIAN 3752
A
4"
A
28
1
2
"
14
1
2
"
A
4" TYP
15"
5"
B
B
7
1
2
" 9"
2"
C
A
6
1
4
"
D
16"
20"
31" Rim
Max.
26
1
2
"
1
3
4
"
13
1
4
"
E E E
E
F
5
7
8
"
E
E
C
15"
E
13
1
4
"
E
18
3
8
"
1
3
4
"
E
26
1
2
"
D
E
13
1
8
"
3752-HLL SHOWN
3752-HLR OPPOSITE
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
Page 8 of 30
Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
Please visit www.acorneng.com for most current specifications.
ROUGH-IN DIMENSIONS -OBC
ONTARIO BUILDING CODE
60"
MERIDIAN 3752
30"
22"
6"
A
4" TYP
A
2"
C
33" Rim
Max.
22"
16
1
2
"
5"
B
7
1
2
"
B
9"
15"
D
4"
4"
A
18"
22"
A
4"
33"
13
1
4
" 26
1
2
"
1
3
4
"
E
E
E E
F
15"
C
E
E
6"
E
D
E E E
15
1
8
"
26
3
8
" 1
3
4
"
20
3
8
"
13
1
4
"
3752-HLR SHOWN
3752-HLL OPPOSITE
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
Page 9 of 30
Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
TOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX 626-855-4863
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
Please visit www.acorneng.com for most current specifications.
ROUGH-IN DIMENSIONS -OBC
ONTARIO BUILDING CODE
60"
MERIDIAN 3752
22"
4"
33"
A
A
4"
4"
18"
30"
22"
A
A
4" TYP
6"
2"
C
D
15"
9"
B
7
1
2
"
B
5"
16
1
2
"
22"
33" Rim
Max.
26
1
2
" 13
1
4
"
1
3
4
"
E E E E
F
6"
E
E
C
15"
E E
E
D
E
13
1
4
"
20
3
8
"
1
3
4
" 26
3
8
"
15
1
8
"
3752-HLL SHOWN
3752-HLR OPPOSITE
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
Page 10 of 30
Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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FIXTURE ANCHORING
2
MERIDIAN 3752
2
4
1
4
3
FYI: Fixtures are shipped with wall mounting brackets pre-installed onto the fixture.
A.
Disassemble fixture from crate and remove
Angle brackets 1 from compliant station of fixture 2 . Loosen remaining angle brackets
3 but keep finger tight.
B.
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.
1
4
!
IMPORTANT
Compliant station portion of fixture refers to station(s) that are intended to meet ADA,
OBC or other accessibility standards required.
C.
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.
D.
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.
E.
Secure remaining mounted angle brackets 3 to wall & starting with the flat or requirement portion of fixture 2 adjust and level as required. Do not over tighten.
NOTE: It may be advantageous to install to the deck, faucets, soap dispensers or other accessories prior to wall mounting.
Part #: 6215-370-000
Page 11 of 30
Revised: 04/01/14
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MERIDIAN 3752
HINT: Teflon tape is recommended on all threaded waste and supply connections.
A.
install grid strainer and close elbow to bowl using plumber's putty.
1
4
4
3
5
2
3
À Grid Strainer w/ 1-1/2" -16
UNE Threads
Á Rubber Gasket
Â
Flat Fiber Washer
Brass Jam Nut
with 3/8" NPT Clean-Out Plug
NOTE: Continuous waste assembly will require field cutting and fitting by the installer.
6"
6"
3"
5"
30"
B.
Assemble continuous waste piping using teflon tape on all threaded connections and make up waste connections to 1-1/2” P-Trap.
Part #: 6215-370-000
Page 12 of 30
Revised: 04/01/14
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NUT
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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MERIDIAN 3752
SPOUT INSTALLATION
1. Assemble spout to deck securing it with nut.
2. Assemble hose adapter to tube adapter and connect
to spout hose.
3. Connect 1/4” O.D. PE tubing from valve.
WASHERS
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
1.
PUSH-IN FITTING INSTALLATION
NOTE: FITTINGS AND TUBE SHOULD BE KEPT
CLEAN, BAGGED AND UNDAMAGED PRIOR TO
INSTALLATION.
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.
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.
2.
3.
4.
Part #: 6215-370-000
HOSE
ADAPTER
TUBE STOP
1/4" PE TUBING
COLLET
COLLET
Page 13 of 30
Revised: 04/01/14
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VALVE INSTALLATION & ADJUSTMENT
MERIDIAN 3752
Valve Assembly Installation:
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.
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.
4) Turn on hot and cold water supplies. If any
leaks are observed, hand tighten
connections as necessary to stop leaks
before proceeding.
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.
!
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.
TEMPERATURE
STEM
WARMER
Part #: 6215-370-000
LOCKNUT
Temperature Adjustment:
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.
Page 14 of 30
Revised: 04/01/14
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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MERIDIAN 3752
SENSOR OPERATION & CONNECTIONS -BATTERY OP
-SO-BAT
Sensor Operation Battery Powered
TRANSFORMER
RED
BLUE
SOLENOID VALVE
-SO SENSOR
-PPZ PUSHBUTTON
RED BLUE
Acorn does not provide batteries for -BAT units.
Each station requires (6) AA batteries.
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.
Part #: 6215-370-000
Page 15 of 30
Revised: 04/01/14
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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HAND OPERATION & CONNECTIONS
MERIDIAN 3752
-H Hand Operated
1/8" O.D. AIR TUBE
1/4" O.D. WATER LINE
Ferrule Nut
Do not over tighten ferrule nuts.
Timing Screw
To adjust timing, turn timing screw.
1/4"
Min.
Part #: 6215-370-000
Turn timing screw clockwise to increase timing.
Ferrule
Nut
Leave a minimum 1/4” of polyethylene tubing through the Ferrule Nut on the pushbutton assembly. This is necessary to ensure proper tubing connection.
Page 16 of 30
Revised: 04/01/14
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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SENSOR OPERATION & CONNECTIONS
-SO Sensor Operation
Range Adjustment
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.
3. Move hand in front of sensor to distance of 2” to 4” within 5 seconds and wait until red light flashes quickly.
4. Move hand to desired sensing distance.
See DETAIL B.
5. Hold hand at desired sensing distance until red light stops flashing and solenoid activates.
See DETAIL C.
Jumper
By Others
DETAIL A
DETAIL B
DETAIL C
MERIDIAN 3752
-SO Sensor Operation or -PPZ Programmable Piezo Pushbutton
TRANSFORMER
RED
BLUE
SOLENOID VALVE
-SO SENSOR
-PPZ PUSHBUTTON
RED BLUE
Part #: 6215-370-000
Transformer must be plugged into a
GFI protected circuit. Fixture must be earth grounded per N.E.C. or applicable codes.
Page 17 of 30
Revised: 04/01/14
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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ACCESS PANEL INSTALLATION
Position bridge enclosure 5 over combined waste and accessory tubing and secure to wall.
All wall anchors and anchoring hardware provided by others.
MERIDIAN 3752
7
5
HINT: It may be advantages to install deck trim such as faucets, soap dispensers or other accessories prior to wall mounting.
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.
6
8
Position station enclosures 8 aligning mounting points and secure with installer provided hardware.
Part #: 6215-370-000
Page 18 of 30
Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
Please visit www.acorneng.com for most current specifications.
MERIDIAN 3752
OPTIONAL ACCESSORY INSTALLATION & ASSEMBLY
!
WARNING
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.
A.
Install soap reservoir to wall inside trap enclosure using mounting brackets provided as shown. Wall anchors and anchoring hardware provided by installer.
B.
Install soap filler assembly to deck as shown.
Mounting
Bracket
C.
Attach 1-1/4" O.D. refill tube to soap filler assembly and soap reservoir with provided hose clamps.
Soap Filler
Plug
D.
Install soap dispenser(s) onto deck by aligning
Anti-Rotation Pin with Key Hole. NOTE: Gasket and Washer are located beneath the deck.
E.
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.
Rubber Gasket
3/8" O.D.
Tubing
Anti-Rotation
Pin
Rubber
Gasket
Washer
Black end of
Check Valve
3/8" Nut
3/8" O.D.
Tube
Direction of Flow
HINT: For best results, install soap reservoir directly below soap filler hole on deck with refill tube as short and straight as possible.
Part #: 6215-370-000
Page 19 of 30
Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
Please visit www.acorneng.com for most current specifications.
MERIDIAN 3752
Programable Piezo Pushbutton
Programming Instructions
(Flow Time Adjustment)
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.
THE TIME SETTINGS PROGRAM USES 3 DIFFERENT TIMING MODES:
—
—
1 second timing mode: Each push of the button adds 1 second to the total timing cycle.
5 second timing mode: Each push of the button adds 5 seconds to the total timing cycle.
—
20 second timing mode: Each push of the button adds 20 seconds to the total timing cycle.
To program the piezo pushbutton, you will need to be able to see the back of the piezo pushbutton.
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.
NOTE: This programming procedure moves along rapidly, there is only about 2 or 3 seconds between programming operations.
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.
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.
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.
—
—
When a timing mode is not required then do not push the button and wait for the next timing mode.
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.
Part #: 6215-370-000
Page 20 of 30
Revised: 04/01/14
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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MERIDIAN 3752
Programmable Piezo Pushbutton
Programming Instructions
(Flow Time Adjustment)
WORKSHEET
(FILL IN ALL BOXES, WHICH WILL SIMPLIFY THE PROGRAMMING PROCEDURE)
Fill in all the
Boxes below
PROGRAMING STEPS:
—
Power down piezo button for 10 seconds.
Determine the number of seconds per timing cycle
Ÿ
Reconnect power.
Ÿ
LED flashes, then stay on.
Ÿ
While the LED is steady on, push button.
Ÿ
LED turns off.
1 Push = 1 Second x 1 = sec
ADD
1 Push = 5 Seconds x 5 = sec
ADD
1 Push = 20 Seconds x 20 = sec
EQUALS
Total timing cycle equals
Ÿ
You are in the 1 sec timing mode, immediately push the button, 1 push equals 1 sec added to the total timing cycle.
Ÿ
Pause and wait for the LED to flash 2 times.
Ÿ
You are in the 5 sec timing mode, immediately push the button, 1 push equals 5 sec added to the total timing cycle.
Ÿ
Pause and wait for the LED to flash 3 times.
Ÿ
You are in the 20 sec timing mode, immediately push the button, 1 push equals 20 sec added to the total timing cycle.
seconds
Part #: 6215-370-000
Page 21 of 30
Revised: 04/01/14
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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MERIDIAN 3752
TROUBLE SHOOTING FOR 9 VOLT DC SENSOR OPERATED VALVES
Normal Valve Function: 9 Volt DC sensor operated valve has flow time of 90 seconds maximum.
To reactivate, the user must move out of and return to the sensing area.
CONDITION: WATER DOES NOT FLOW
Indicators
Sensor flashes continuously every 2 seconds when hands are within range.
Probable Cause
Low battery warning
Solution
Replace battery
Sensor does not flash when the user’s hands are within range.
Sensor flashes once when user’s hands are within range.
Circuit breaker tripped.
Battery completely used up.
Defective 9V DC transformer
Transformer polarity crossed
Unit is in “Security Mode” after
90 seconds of constant detection.
Range is too short.
Range is too long.
Sensor is picking up a highly reflective surface.
Defective sensor.
Stops or water main closed.
Bad sensor to solenoid connection.
Debris or scale in solenoid assembly.
Debris or scale in diaphragm.
Debris or scale in strainer.
Reset circuit breaker
Replace battery
Replace transformer.
Replace transformer (sensor may be damaged and need replacement).
Remove sources of detection and wait 30 seconds before checking.
Increase range.
Decrease range and wait 30 seconds.
Eliminate cause of reflection and wait
30 seconds before checking.
Replace sensor.
Open stops or water main.
Ensure wires make proper contact.
Remove solenoid, pull out plunger and spring, and clean with scale remover solution or pressurized air.
Remove diaphragm and clean
Remove strainer and clean.
CONDITION: FALSE TRIGGERING;
WATER FLOWS CONTINUOUSLY
Indicators
Sensor flashes when user’s hands are within range.
Sensor does not flash when users hands are within range.
Probable Cause
Debris or scale in diaphragm
Diaphragm is defective or torn.
Sensor is dirty or covered.
Range too long or highly reflective surface, sunlight, bright lights etc. are triggering sensor.
Solution
Remove diaphragm and clean.
Replace diaphragm.
Clean or uncover sensor and wait 30 seconds.
Decrease range and wait 30 seconds.
Eliminate cause of reflection or correct lighting problem.
CONDITION: WATER FLOWS
CONTINUOUSLY BUT STOPS
WHEN HANDS ARE WITHIN RANGE
Indicators Probable Cause
Water runs continuously when sensor not activated. Sensor flashes when hands are within range and water shuts off.
Solenoid polarity crossed.
Solution
Disconnect solenoid and reverse polarity.
Part #: 6215-370-000
Page 23 of 30
Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
Please visit www.acorneng.com for most current specifications.
MERIDIAN 3752
TROUBLE SHOOTING FOR OPTIONAL PUSHBUTTON OPERATED VALVES
Normal Valve Function: Hand pushbutton operated valve has an adjustable flow time from
5 to 60 seconds.
CONDITION: WATER DOES NOT FLOW
Probable Cause
Water main closed.
Checkstops closed.
Air leaks from 1/8” O.D. tubing or fittings.
Pushbutton air diaphragm leaks.
Servomotor diaphragm center hole is blocked.
Servomotor upper diaphragm is damaged.
Low or no water pressure at supplies.
Solution
Open water main.
Open checkstops.
Remove checkstop strainer and clean.
Replace damaged tubing or fitting.
Replace pushbutton air diaphragm.
Remove blockage.
Replace servomotor upper diaphragm.
Increase water pressure to 30 PSI minimum.
CONDITION: WATER DRIPS, WON'T SHUT OFF
Probable Cause
Servomotor diaphragm offset hole is blocked.
Servomotor seat is damage
Servomotor plate or diaphragm is obstructed.
Servomotor timer assembly is damaged.
Solution
Remove blockage.
Replace servomotor seat.
Remove cause of obstruction.
Replace servomotor timer assembly.
CONDITION: REDUCED WATER FLOW
Probable Cause
Valve riser tubing is crimped.
Blockage in valve flow control.
Low water pressure at supplies.
Lime deposits in hot water pipes.
Solution
Straighten valve riser tubing.
Remove checkstop strainer and clean.
Remove blockage.
Increase water pressure to 30 PSI minimum.
Remove lime deposits with appropriate cleaning solution.
CONDITION: PREMATURE WATER SHUT OFF
Probable Cause
Air leaks from 1/8" O.D. tubing or fittings.
Pushbutton air diaphragm leaks.
Solution
Replace damaged tubing or fitting.
Replace pushbutton air diaphragm.
Part #: 6215-370-000
Page 24 of 30
Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
Please visit www.acorneng.com for most current specifications.
CARE, CLEANING, AND REPAIR
OF CORTERRA SOLID SURFACE
CORTERRA SOLID SURFACE
Acorn's densified solid surface material is composed of recycled solid-surface polymer resin, aluminum trihydrate and fillers. It is resistant to stains, impact and burns and complies with ANSI Z124.3. It is attractive, durable and easy to maintain.
ROUTINE CLEANING
Corterra should be kept clean at all times. If maintained,
Corterra surfaces will retain their new, clean appearance indefinitely. Wash with a non-abrasive all purpose cleaner and water, then rinse. Wipe dry. (Never use cleaners with strong chemicals such as toilet bowl cleaners, rust removers, ceramic cook top cleaners, laquer thinners or oven cleaners). To remove persistent stains use a Scotch
Brite pad and an abrasive cleaner or a solution of household bleach and water (1 part water to 1 part bleach).
REPAIRING SURFACE DAMAGE
Surface damage, such as minor chips, scratches, burn marks and graffiti can be repaired with a fine grit abrasive cleanser, such as a Scotch-Brite pad or fine grit sandpaper.
For more serious physical damage caused by vandals, an
Acorn Solid Surface Repair Kit is available. Contact the factory for details. Refer to drawing #9927-160-002.
SOAP SYSTEMS
Acorn soap reservoirs and dispensers provide a dependable operation over long term when proper maintenance is performed and the correct soap is being used. The most common problem with soap systems is that the wrong viscosity (thickness) of soap is being used or high acidic pH levels are in the ingredients. Soap thickness can be best explained as no thicker or thinner than normal household liquid dish soap. The pH level of the soap should be 6.5 to
8.5; more acidic soaps will corrode the metal parts and degrade rubber or plastic components.
Soap reservoirs and dispensers should be maintained periodically to clear residue. This should be done in hot water to clean the internal components. The valve should be pumped multiple times to thoroughly clean any residue inside. The reservoir and tubing should also be flushed and cleaned with hot water. In cases of extreme clogs, the dispenser should be disassembled and the parts thoroughly cleaned.
WARNING: Some soap contains corrosive additives that can cause rust on stainless steel surfaces. Acorn recommends user/ maintenance personnel review MSDS reports of soap and possible corrosive additives noted.
MERIDIAN 3752
RECOMMENDED CLEANING SOLUTIONS
- Hand dishwashing liquid/soft water solution
- Mild soap/soft water solution
- 3M Stainless Steel Cleaner/Polish
- White vinegar/soft water solution
(for brightening, removing oil and
hard water deposits)
- CLR Brand Cleanser or baking soda/soft
water solution (for brightening, removing
hard water deposits)
- Club soda and sponge
FOR HIGH POLISH STAINLESS STEEL
Note: High polish stainless steel surfaces should never come into contact with any abrasive cleaning brush, cloth or cleaning agent.
To remove smudges and fingerprints:
Wipe surfaces with a quality Stainless Steel Cleaner/Polish.
Apply using a soft non-abrasive cloth, wipe surfaces with stainless steel cleaner/polish.
To remove rust stains:
Wipe surfaces with CRES (available from Acorn) or equivalent cleaner. Use recommended solutions. Apply using a soft non-abrasive sponge. Rinse surfaces immediately after application. Always follow cleaner product directions provided. Afterwards, using a soft, non-abrasive cloth, wipe surfaces with stainless steel cleaner/polish.
FOR TOUGH PROBLEMS
- CRES Cleaner specifically for rust stains (available from
Acorn)
- Tarn-X for general stains
- #7 chrome polish
- Silver polish
To remove stubborn spots or to treat a scratch
(Standard Satin Finish Only):
Use of synthetic, abrasive, general-purpose pads such as
Scotch Brite is recommended. Apply the stainless steel cleaner/polish to the synthetic, abrasive pads and
CAREFULLY rub out spot with cleaner/ polish. Be sure to rub in the direction of the grain! Do not allow steel wool to come in contact with the stainless steel. Steel particles can embed into the stainless steel surface and create rust!
Stainless steel should be kept clean at all times. If maintained, stainless steel surfaces will retain their new, clean, polished appearance indefinitely. To remove water spots or rust spots, stainless steel cleaner/polish on a cloth is recommended.
IF SPOTS ARE STUBBORN OR IF YOU WISH TO TREAT A
SCRATCH: synthetic, abrasive, general-purpose pads such as Scotch Brite are recommended. Apply the stainless steel cleaner/polish to the synthetic, abrasive pad and
CAREFULLY rub out spot with cleaner/polish. Be sure to
rub in the direction of the grain! Do not allow steel wool to come in contact with stainless steel. Steel particles can embed into the stainless steel surface and create rust.
CARE AND CLEANING OF STAINLESS
STEEL SURFACE
NORMAL CLEANING
Clean weekly or more often, as needed
(especially high polishing surfaces)
RECOMMENDED CLEANING MATERIALS
- Sponge – natural or artificial
- Nylon or other soft-bristle material brush
- Soft cloth (as used on automobile finishes)
Part #: 6215-370-000
Page 25 of 30
Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
Please visit www.acorneng.com for most current specifications.
MERIDIAN 3752
Description
MOUNTING HARDWARE
COMPONENTS & REPAIR PARTS
Part No.
Diagram
Left Support Bracket
6215-100-001
Right Support Bracket 6215-101-001
1/4" Stainless Steel Helical Lock Washer 0337-050-000
Stainless Steel, Hex Head, Cap Screw,
¼"-20 x 3/4" Long
0206-008-000
¼"-20 x 1" Thick Fender Washer
ELECTRONIC HARDWARE
9 VDC Plug-In Transformer
0332-004-000
0711-410-001
Part #: 6215-370-000
Page 26 of 30
Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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MERIDIAN 3752
Description
COMPONENTS & REPAIR PARTS
Part No.
Diagram
9 VDC Solenoid
2563-326-001
9 VDC Battery-Pak Assy
(6 AA Batteries Not Included)
Battery-Pak Mounting Bracket
ENCLOSURES
Bridge or Transition
0710-358-001
6155-013-199
6215-108-199
HLL Left Side, High Side,
Enclosure
6215-112-199
HLL Right Side, Low Side,
Enclosure
HLR Right Side, High Side,
Enclosure
6215-126-199
6215-116-199
HLR Left Side, Low Side,
Enclosure
6215-122-199
Part #: 6215-370-000
Page 27 of 30
Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
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MERIDIAN 3752
Description
SPOUTS
COMPONENTS & REPAIR PARTS
Part No.
Diagram
Stern Easy Remote Actuated Spout
2993-410-000
Stern Easy E/B Sensor Operated
Spout 9VDC
2993-400-001
Stern Easy E Adapter Kit
6215-105-001
Push Button Assembly
Blank Piezo Pushbutton
Cold Piezo Pushbutton
Hot Piezo Pushbutton
COMBINED WASTE ASSEMBLY
Grid Strainer w/ Close
2566-270-001
0709-067-001
0709-066-001
0709-065-001
4926-063-001
2 Station Combined Waste Assembly 4970-030-001
Part #: 6215-370-000
Page 28 of 30
Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
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INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
Please visit www.acorneng.com for most current specifications.
MERIDIAN 3752
Description
VALVE
COMPONENTS & REPAIR PARTS
Part No.
Diagram
T/P 2-Station, 9VDC Solenoid, ASSE
1016, Mixing Valve Assembly
2595-663-001
Optional T/P 2-Station, Hand Operated,
ASSE 1016, Mixing Valve Assembly
2595-653-001
Optional 2-Station, 9VDC Solenoid,
Single Temp Valve Assembly
2595-642-002
Optional 2-Station, Hand Operated,
Single Temp, Metering Valve
Assembly
2595-612-001
Part #: 6215-370-000
Page 29 of 30
Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
TOLL FREE 800-743-8259 • LOCAL 626-855-4866 • FAX 626-855-4863
INSTALLATION, OPERATIONS & MAINTENANCE MANUAL
Please visit www.acorneng.com for most current specifications.
MERIDIAN 3752
M A I L A D D R E S S
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 9 1 7 4 4 U . S . A .
P H Y S I C A L A D D R E S S
1 5 1 2 5 P R O C T O R AV E N U E
C I T Y O F I N D U S T R Y, C A 9 1 7 4 6 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 E B w w w. a c o r n e n g . c o m
WARRANTY INFORMATION
Acorn warrants that all of its products are guaranteed against defective material or poor workmanship for a period of one year from date of shipment. Acorn's liability under this warranty shall be discharged by replacing without charge
F.O.B. City of Industry, California, any goods, or part thereof, which appears to the company upon inspection to be of defective material or not of first class workmanship, provided that claim is made in writing to the company within reasonable period after receipt of the product. Where claims for defects are made, the defective part or parts shall be delivered to the company, prepaid, at City of Industry, California for inspection. Acorn will not be liable for the cost of repairs, alterations or replacement, or for any expense connected therewith made by the owner or his agents, except upon written authority from the Acorn City of Industry office. Acorn will not be liable for any damages caused by defective materials or poor workmanship, except for replacements, as above provided. Contact local Acorn
Representative for complete terms and conditions.
Part #: 6215-370-000
Page 30 of 30
Revised: 04/01/14
ACORN ENGINEERING FIELD SERVICE
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