Hunter ACC User manual

ACC Controller
Owner’s Manual
Installation, Programming, and Operating Instructions
September 2006
ACC Owner’s Manual Rev E - 9/06 1 of 60

ACC Owner’s Manual
Introduction
The ACC controller, in its many modular configurations, is Hunter’s premium industrial-grade
controller for high-performance irrigation control. Its primary purpose is to operate 24VAC
irrigation solenoids or low-draw solid state relays for specific durations at specific times. It can
also be connected to various sensors, providing automatic shutdown and notification in case of
emergencies, and actual flow records and responses in real time.
With plug-in Com and other modules, the ACC can also communicate with a computerized
central control system via hardwired cable, radio, dial-up telephone, or cellular modem. ACC is
also prewired to accept Hunter wireless remote controls.
 This product should not be used for anything other than what is described in this
Document.
 This product should only be serviced by trained and authorized personnel.
 This product is designed for continuous outdoor use above sea level to 15,000
feet/4.5km at temperatures 0-50C.
 These units have an IPX4 rating.
ACC Owner’s Manual Rev E - 9/06 2 of 60

Introduction ...................................................................................................................................................2
Controller Interface & Key Components .......................................................................................................4
Wiring Compartment Interior.........................................................................................................................6
Explanation of Symbols.................................................................................................................................7
Installation.....................................................................................................................................................7
Metal Cabinet, Wall Mount Installation..........................................................................................................7
Connecting AC Main Power, Wall mount cabinet.........................................................................................8
Metal Cabinet, optional Pedestal Installation................................................................................................9
Connecting the Metal Pedestal Main AC Power.........................................................................................10
Plastic Pedestal Installation ........................................................................................................................10
Connecting Plastic Pedestal AC Main Power.............................................................................................11
Connecting Earth Ground...........................................................................................................................13
Installing Station Modules...........................................................................................................................13
Connecting the valve wires.........................................................................................................................16
Connecting Decoder Output Path wires......................................................................................................17
Decoder Programming................................................................................................................................17
24 VAC Test Terminal (constant 24V):.......................................................................................................18
Connecting the Master Valve(s) and/or Pump Start Relay(s).....................................................................19
Connecting a Rain or Freeze shut off device (optional & not included)......................................................19
Connecting the Hunter Flow Sensor (optional & not included)...................................................................20
ICR Remote Control....................................................................................................................................21
Quick Start...................................................................................................................................................23
Controller Programming and Operation......................................................................................................25
Using the Information button.......................................................................................................................25
Setting current Date and Time....................................................................................................................25
Setting Program Start Times.......................................................................................................................26
Setting Program Start Times.......................................................................................................................26
Setting Station Run Time Duration .............................................................................................................27
Setting Station watering duration................................................................................................................27
Changing Seasonal Adjust..........................................................................................................................28
Setting Days to Water.................................................................................................................................28
Setting Pump and Master Valve Operation.................................................................................................30
Setting Pump and Master Valve Operation.................................................................................................30
Setting Station Cycle and Soak durations...................................................................................................30
Setting Station Cycle and Soak durations...................................................................................................30
Setting Flow Monitoring...............................................................................................................................31
Flow Alarms ................................................................................................................................................34
Alarm Logs (also see Historical Data/Data History section).................................................... 35
Tips on Flow Alarms: ............................................................................................................... 35
Setting ClikSensor Operation .................................................................................................................36
Sensor Alarms.............................................................................................................................................37
Setting Program Overlap Options...............................................................................................................38
Option One: Stack or Overlap................................................................................................... 38
Option Two: Smartstack........................................................................................................ 39
Option Three: SSG/Smartstack................................................................................................. 39
Setting Station & Program Names..............................................................................................................40
Historical Data/Data History........................................................................................................................41
Common Fault Messages.......................................................................................................... 42
Hidden Features..........................................................................................................................................43
No Water Window (INFORMATION+Set Program Start Time)............................................ 43
Delay between Stations INFORMATION+Set Station Run Times ......................................... 44
Making the M/V circuit normally open (INFORMATION+Set Pump Operation).................. 44
Setting the Flow Sensor size and type (INFORMATION+Set Flow Monitoring)................... 45
SSG (Simultaneous Station Group) setup (INFORMATION+Overlap).................................. 46
ACC Owner’s Manual Rev E - 9/06 3 of 60

Custom Manual program setup (INFORMATION + Manual Operation)................................ 48
To start a Custom Manual:..........................................................................................................................49
Test Program: Programs button (hold) ..................................................................................... 49
Easy Retrievebackup (INFORMATION + Programs button at Run position).................... 50
Manual Operations......................................................................................................................................51
System Off...................................................................................................................................................52
Reset...........................................................................................................................................................53
Decoder Operations (ACC99D versions)....................................................................................................53
Connecting the 2-wire paths ..................................................................................................... 53
Status Lights (ADM-99 Output Module).................................................................................. 54
Decoder Programming.............................................................................................................. 54
Decoder Pump/Master Valves .................................................................................................. 57
Troubleshooting ..........................................................................................................................................58
Specifications..............................................................................................................................................59
Dimensions ............................................................................................................................... 59
Electrical................................................................................................................................... 59
Controller Interface & Key Components
A. LCD Display – Backlit, adjustable contrast display (re-lights when any button is pressed).
B. + Button – Increases flashing value, depending on function.
C. – Button - Decreases flashing value. Most items in ACC screens “wrap” so that you can
continue in either direction through all
the choices.
A
BCDE F
G H
I
J
K
L
M
N
D. Copy/Learn Button – Copies a
time or value in a flashing field, for
pasting into similar fields. Also used
to Learn typical flow (when a flow
sensor has been installed).
E. Paste/Pause Button – Pastes a
copied time or value into a new field.
Also used as Pause/Resume feature
during watering, shuts off devices for
30 mins. or until Resumed.
F. Programs Button – Selects one of
the automatic Programs (A-F), starts
Test program, allows Reset (with
Reset button).
G. Up and Down Arrow Buttons –
ACC Owner’s Manual Rev E - 9/06 4 of 60

Used to move up and down through adjustable functions in various screens, and to select
higher or lower numbered items.
H. Left and Right Buttons – Used to move left and right in some screens.
I. Information Button – Lights display, and provides instant Help and other information,
depending on dial position. Also used to access Hidden Features, when held down while
turning to specific dial positions.
J. Programming Dial – Used to access all functions of ACC. The most basic automatic
watering can be set up in the first 4 dial positions.
K. Reset Button – recessed switch erases some or all memory when combined with pressing
specific buttons.
L. Facepack Release Button – Hold down while removing facepack from inner door panel.
M. Door Grip – convenient finger grip for opening inner door.
N. Logo Badge – removable, for installation of optional communications modules.
ACC Owner’s Manual Rev E - 9/06 5 of 60

Wiring Compartment Interior
A. Inner Door – opens to main
wiring compartment.
ABCD E
F
G
H
IJ
K
L
B. AC Wiring compartment – for connection of 120/230V AC power with 1 x .75”/19mm
conduit opening.
C. Fuse – 2 Amp (fast) 250V, 6 x 20mm.
D. Conduit openings, low voltage - (2 x 2.5”/64mm, 2 x .75”/19mm)
E. Wire tie holders for valve wires (valve wiring area)
F. Station output terminals (valve wires) – screw terminals on 6-station output modules.
G. Upper deck panel with LED status indicators – numbered station lights, green for
active, red for faults.
H. Sliding lock for output modules – permits addition or removal of output modules, locks
wired modules in place.
I. Master Module – includes sensor, Pump/Master Valve, and other accessory connections.
J. Communications module area (cover removed) – removable panel covers installation
compartment for Com modules and radio.
K. SmartPort – Integrated connector for ICR/SRR receiver (on side of cabinet).
L. Earth Ground Lug – for connection of earth ground copper wire (for surge protection
only). Do not connect valve commons – see Master Module for Common wiring of
solenoids and valves.
ACC Owner’s Manual Rev E - 9/06 6 of 60

Explanation of Symbols
= AC
= Consult Documentation
= Hazardous Voltages Present
= Double Insulated
Installation
(Trained Personnel Only)
Metal Cabinet, Wall Mount Installation
Tools required:
 Long drill bit and extension
 Philips screwdriver or bit (for use with long extension) – magnetic recommended.
 Wire strippers
Location Requirement: a) a switch or
circuit-breaker shall be included in
building installations; b) the switch or
breaker shall be in close proximity to
the controller, and within easy reach
of the operator; c) the switch or
breaker shall be marked as the
disconnecting device for the
controller.
Avoid direct exposure to sprinkler
spray.
Shaded or partially shaded areas are
preferable to prolonged direct
sunlight. Facepack Door
The ACC controller is relatively heavy, about 30lbs/13.6 kg in t
metal wall mount configuration. Mounting includes a posi
hanger to assist with installation.
he
tioning
reely.
efore mounting, it is easier to remove the metal cabinet door. be
Positioning Hanger
Mounting hardware has been included, but it is the installer’s
responsibility to insure that adequate hardware is used for the
physical location.
ACC is approximately 15.5”/40cm wide. Allow another
15.5”/40cm to the left of the controller for the door to open f
B
Swing the door open, grasp the top securely, and push up on the
bottom of the door, near the lower hinge. The hinges should disengage and the metal door can
removed.
Mounting Holes
ACC Owner’s Manual Rev E - 9/06 7 of 60

Remove the facepack assembly from the controller.
 Open the facepack door using the recess on the right.
 Disconnect the gray ribbon cable from the back of the facepack. Pull gently on the
ribbon cable… a slight rocking motion may help disengage the connector.
 Push up on the upper door hinge, and tilt the door so that it disengages the hinge posts.
Remove the facepack and set aside in a safe location.
OPTIONAL: Locate the positioning hanger in the upper center of the controller’s location on the
wall, leaving adequate clearance for the opened door to the left.
 Drill a pilot hole for the anchor and insert.
 Install one #10/5mm screw in this hanger position, leaving approximately ¼”(6-7mm) out
of the anchor to allow the controller to hang from this screw.
 Hang the controller from the keyhole slot in the positioning hanger.
 Place a level on the top of the controller cabinet and level.
 Locate the 3 mounting holes in the cabinet. These are visible from the front, with the
facepack removed, in deep recesses in the top two corners, and another shallow recess in the
bottom center.
 Mark each of these 3 locations and install anchors.
 Reposition controller on the hanger and use a long screwdriver or drill extension
(3”/75mm) with magnetic tip to install the remaining 3 screws, one at each anchor position,
and secure.
Connecting AC Main Power, Wall mount cabinet
The ACC can operate with either 120VAC or 230VAC power, depending on how the incoming
AC wires are connected.
Supply wires must be 14AWG (1.85mm) or larger.
The ACC is prewired for 120V operation but can easily be changed to 230V.
Consult or hire a licensed electrician for these connections as required.
 Turn AC power off at the source, and verify that it is off.
 Remove the wiring compartment screws and the wiring compartment door.
 Strip approximately ½” (13mm) of insulation from the end of each of the AC power wires,
and route into the wiring compartment through the conduit.
 Locate the white plastic terminal block, and wire according to the following diagrams.
For 120V~ operation, connect the incoming black power wire (hot) to align in the wiring block
with the black wire lead from the transformer.
Insert the incoming black wire lead into the hole opposite the black transformer wire and tighten
screw securely.
Connect the incoming neutral (white) wire to align with the blue lead from the transformer.
ACC Owner’s Manual Rev E - 9/06 8 of 60

The 120V~ ground wire (bare, or green) is not used in ACC transformer connections. The
service ground wire may be connected to earth ground if required.
Tighten screw and replace cover.
For 230V~ operation, connect the incoming power wire (hot, brown in many wiring standards) to
align in the wiring block with the brown wire lead from the transformer. Connect the incoming
Neutral (blue in some international standards) wire to align with the blue lead from the
transformer. Tighten screws and replace cover.
Apply AC~ power and test. Refer to Earth Ground and Station
Wiring sections for additional connections.
Metal Cabinet, optional Pedestal Installation
Location Requirement: a) a switch or circuit-breaker shall be
included in building installations; b) the switch or breaker shall
be in close proximity to the controller, and within easy reach of
the operator; c) the switch or breaker shall be marked as the
disconnecting device for the controller.
 Installing the pedestal
1. Assemble the mounting template using the instructions
provided with the pedestal.
ACC Owner’s Manual Rev E - 9/06 9 of 60

2. Using the enclosed mounting template, locate the bolts two inches deep in the concrete pad, in
the locations indicated. The pad can be any size but at least a two-foot square is recommended.
3. Level the mounting bolts before the concrete sets.
4. After the concrete sets, remove the door of the pedestal and slide the pedestal down onto the
four bolts. Secure the pedestal to the bolts using the enclosed washers and nuts.
5. Remove the door and faceplate of the ACC and attach the metal cabinet of the ACC to the top
of the pedestal using the ½”/13mm and 2”/50mm metal conduit nuts in the pedestal. Tighten
securely by engaging teeth with a screwdriver and tapping in a clockwise direction.
Connecting the Metal Pedestal Main AC Power
Conduit nuts
6. Connect AC power wiring as in the metal wall cabinet.
Route the AC power wiring through the metal pedestal and
up into the ACC wiring compartment. Follow the AC wiring
instructions for the metal wall cabinet closely.
7. Replace the pedestal door first and then replace the
faceplate and the cabinet door. The pedestal door cannot be
removed or replaced when the cabinet door is closed.
Refer to Earth Ground and Station Wiring sections for additional connections.
Plastic Pedestal Installation
Select a location for installation of the controller based
upon these factors:
1. Availability of 120/230VAC~ power.
2. Do not locate under overhanging branches of trees or any structure that may attract lightning.
3. Avoid locations where sprinklers s
upward onto the controller, and low ar
subject to flooding.
pray
eas
nd
4. Locate controller in a location that is
central to all valves/sprinklers that it
controls to maintain visible operation a
reduce wire lengths/costs.
Concrete Base Installation:
1. Set forms for a 21" (533 mm) wide x
26" (660 mm) long concrete base. The
base pad should be 2" (50 mm) above
grade for proper drainage.
2. Position a 11⁄2" to 3" (38 to 76 mm)
diameter conduit sweep elbow for the field wires (size will vary depending upon the number of
valve wires entering the controller), a 1" (25 mm) conduit sweep elbow for the power supply,
and a 1" conduit sweep elbow for any communication wires, if applicable. Secure the sweeps so
they will enter the bottom of the controller correctly.
3. Allow approximately 3" of conduit above the surface of the concrete pad.
4. Shape the concrete base to shed any water away from the controller.
ACC Owner’s Manual Rev E - 9/06 10 of 60

5. Prepare the template for insertion in the concrete. Twist one nut on each of the four J-bolts to
the bottom of the thread and slide each bolt through the hole in the template. Put a washer and
nut on each J-bolt to secure it to the template (allow a minimum of 21⁄2" of thread protruding
above each nut).
6. Work the J-bolts down into the concrete until the template sits level on top of the concrete.
Smooth and allow the concrete to cure (at least 24 hours).
Note: It is important with plastic pedestals to ensure a smooth mounting surface. Uneven surfaces may
cause the pedestal to distort, preventing proper sealing of the doors.
7. Remove the nuts and washers from the concrete base. Place the pedestal over the bolts and
secure with nuts and washers.
Note: Remove both doors and lift the pedestal from the main body. Two people are required for
this task.
Connecting Plastic Pedestal AC Main Power
ACC Plastic Pedestal wiring is somewhat different than wall mount
wiring. Read carefully.
Verify that AC power is off before proceeding.
Insert the two 120/230~ power wires through the AC power conduit
(keep power wires separate from low voltage and communication
wires) and route into the wiring compartment.
The ACC pedestal has a separate wiring junction box below the
main transformer assembly. All 120/230~ connections are
made in this junction box. Do not remove the cover
immediately below the transformer with the fuse holder.
The ACC pedestal junction box is equipped with an
external power switch, which is connected in the AC
wiring path.
Remove the screws for the junction box cover, and open
carefully to the right. The switch wires remain attached
through the wiring process.
Locate the two terminal blocks, upper and lower, inside the
junction box.
Incoming AC power connections are made at the lower of the
two terminal blocks.
Choosing 120V~ or 230V~ power is performed at the upper of
the two terminal blocks.
120VAC (120~) Installation:
At the lower terminal block, connect the incoming power wire
(black) to align with the brown wire leading to the switch. 120/230~ Switch
Lower
Terminal
Block
Upper
Terminal
Block
Junction
Box
Brown Wire
from Switch
ACC Owner’s Manual Rev E - 9/06 11 of 60

Insert stripped wire and tighten screw.
Connect the neutral incoming power wire (white) to align with the blue wire in the lower
terminal block and tighten.
The upper terminal block determines the operating voltage, depending on where the brown wire
from the switch is connected.
For 120V~ operation, connect the brown wire from the switch to align with the Black wire in the
upper terminal block. Insert stripped wire and tighten screw securely.
Replace cover, apply AC power, and test. Refer to Earth Ground and Station Wiring sections for
additional connections.
230VAC (230~) Installation:
At the lower terminal block, connect the incoming power wire (often brown) to align with the
brown wire leading to the switch. Insert stripped wire and tighten screw.
Connect the neutral incoming power wire (often blue) to align with the blue wire in the lower
terminal block and tighten.
The upper terminal block determines the operating voltage, depending on where the brown wire
from the switch is connected.
On the upper terminal block, connect the brown wire from the switch to the screw aligned with
the Brown wire in the upper terminal block. Insert the stripped wire and tighten screw securely.
Replace cover, apply AC power, and test. Refer to Earth Ground and Station Wiring sections for
additional connections.
ACC Owner’s Manual Rev E - 9/06 12 of 60

Connecting Earth Ground
(all configurations)
The ACC features a copper earth ground lug, to the immediate right of the transformer assembly.
This earth ground connection is isolated from the primary AC power and is used to ground
incoming surges from the communications and output valve wires. This connection can be used
to ground the primary AC power. Do NOT connect any portion of the 120/230V~ input power to
this point.
With the controller power Off, loosen the slotted screw in the center of the ground lug.
Route a bare 6 AWG (4.11mm dia. or greater) earth ground wire into the wiring area through the
.75” (19mm) conduit opening directly beneath the ground lug, in the bottom of the controller
cabinet. Do not route the ground wire through the same conduit as the incoming primary AC
power!
Loosen the ground lug screw, insert the ground wire into the ground lug and tighten the screw to
secure the ground wire. Do not overtighten.
Ground Wire
in .5”/13mm
conduit
Ground Lug
Grounding hardware should be selected according to standards
established by American Society of Irrigation Consultants Earth
Grounding guideline 100-2002 (available at their website,
www.asic.org).
Acceptable grounding consists of an 8’ (2.5m) copper-clad rod
or stake, or a 4” x 96” (100mm x 240cm) copper plate, or both,
placed in the earth at least 8’(2.5m) away from the controller,
and with the ground wire at right angles to the communications
and valve wires, if possible. Ideal grounding resistance would be
10 Ohms or less as measured with a “megger” or similar device.
Please consult the ASIC reference for more detailed
considerations of this critical step.
Improper connection to earth ground voids the effectiveness of the output module surge
protection.
Installing Station Modules
ACC expands in 6-station increments with intelligent output modules, requiring no tools to
install and only a screwdriver for station wiring connections. The base configuration is 12
stations (two 6-station modules installed) with a maximum station capacity in a metal wall
cabinet of 42 stations (7 total output modules x 6 stations, each).
ACC can be expanded at any time with either of the following types of modules:
ACC Owner’s Manual Rev E
9/06 13 of 60

1. ACM600, 6-station output module with surge suppression and diagnostic LEDs.
2. AGM600, 6-station output module with heavy-duty surge suppression and diagnostic
LEDs.
These two types of modules may be mixed within the same installation, if desired.
ACC Owner’s Manual Rev E
9/06 14 of 60

Output Modules (ACM600, AGM600)
AGM600 6-station output
module with
Heavy Duty Surge Protection
ACM600
6-station output module
A
B
E
D
C
A. Station Output Screw Terminals – Connect no more than two solenoids each.
B. Station Status LEDs – Green for station activity, Red for fault or short.
C. Locking lugs (for module lock)
D. Gold plated electrical contacts (lower rear of module)
E. Additional surge components, AGM versions (visible through module)
There is also an optional decoder output module (ADM99)
which installs in the first 3 expansion slots. The decoder
configuration is 99 stations, maximum.
Upper Deck
cover
 To install expansion modules, turn the dial to the
Run position.
 Open the inner facepack door, and locate the m
lock. Slide the module lock to the “Unlock
position.
odule
ed”
traight
 Flip up the upper deck cover. Slide the modules up,
into the next available position, viewed from left to
right… do not skip slots by leaving them empty.
 Install a module by aligning it firmly in the lower
portion of the next available slot, and sliding s
up until it clicks into place. One of the LEDs will illuminate red briefly, to show that the
new module has been recognized.
Slide ADM99
in first 3 slots
ACC Owner’s Manual Rev E
9/06 15 of 60

 Tthe silver contact on the back of the controller
cabinet must engage a mating slot in the back of the
expansion module. Do not “tip” or force the module
into place. Slide straight up, from the bottom of the
slot.
ADM99
Decoder
Output
Module
 While at the Run dial position, press the Information
button. The current station size will be shown, and
should include any new modules you have added.
 Decoder output modules may NOT be mixed with the
“conventional” ACM/AGM-600 output modules.
 Decoder output modules are always installed in the first three slots.
Connecting the valve wires
Each station output module has 6 screw terminals for
connection of individual station wires. The terminals will
accept from 22 AWG (.64mm dia.) to 12 AWG (2.05mm
dia.) wires.
Each station output is rated for .56 A, max, or enough to
operate two typical Hunter solenoids simultaneously.
Once the output module is installed in the slot, the station
numbers assigned to the output module appear in the upper deck label above each slot.
 The modules may be removed, if necessary, without
disconnecting the field wiring. However, they must
be reinserted into exactly the same slot, or the
station addresses will be switched.
Master Module
COM
terminals
 Connect the return wires from the valves to one of
the 3 terminals on the Master Module marked
COM. Since many valve solenoid wires will need to
connect to these 3 common terminals,
 Route valve wires between control valve location
and controller.
 At valves, attach a common wire to either solenoid
wire of all valves. This is most commonly a white colored wire. Attach a separate control
wire to the remaining wire of each valve. All wire splice
connections should be done using waterproof connectors.
 Open hinged faceplate on the controller to access the terminal
area.
 Route valve wires through the conduit and attach conduit to
the controller at the large conduit openings on the right side of
the bottom of the cabinet.
 Strip 1⁄2" (13 mm) of insulation from ends of all wires.
Secure valve common wire to COM (Common) terminals on
the Master Module. Then attach all individual valve control
wires to appropriate station terminals.
ACC Owner’s Manual Rev E
9/06 16 of 60

Connecting Decoder Output Path wires
Up to 99 stations may be operated over a single pair of wires (known as a “path”) using
decoders. The decoder output module allows up to 6 two-wire paths to the field decoders. The
maximum number of decoder stations is still 99, but multiple paths allow the shortest wire runs.
You may use any number of paths to reach all 99 stations.
Each path should consist of Hunter Industries Model IDWIRE1 or IDWIRE2 color-coded
decoder wire. This is a twisted, solid-core wire suitable for direct burial, and is always color-
coded red and blue.
All red/blue connections in the two-wire path must be made with DBR6 waterproof connectors
or equal.
Each path has a red and a blue terminal with its number on the decoder output module.
 Route decoder path wires through the conduit into the wiring compartment. Leave
adequate slack in the wires for thermal contraction.
 Strip 1⁄2" (13 mm) of insulation from the red and blue ends.
 Connect the red wire to the red “1” terminal, and the blue wire from the same pair to the
blue “1”. Repeat for any other paths as needed.
It is not necessary to connect the paths in a loop, back to any other point in the controller. Simply
insert decoders in the path until complete, and stop at the last decoder on the path.
 Do not connect a wire path from one controller to another controller!
Decoder Programming
When a decoder output module is installed, the controller facepack will recognize it and the
station size will change to “99” (regardless of how many stations are in use). This will also
unlock the normally hidden Decoder displays in the following dial positions.
Advanced Features: Main decoder/station programming will be activated. This is the primary
decoder programming position.
Set Pump Operation: Will allow decoder stations to be designated as Pump/Master valves. The
controller never has more than 2 P/M outputs, but it is possible to assign one or both of them to a
decoder output (instead of the terminal on the Master Module).
See complete decoder setup information in the Decoder Operations section of this manual.
ACC Owner’s Manual Rev E
9/06 17 of 60

Master Module: Key Connections
A
A
AH
G
E
F C
B
D
A. Common Ground Terminals (x3) – for return wires (often white) from stations and
master valves. Field wiring may be returned to any of these 3 terminals.
B. P/M2: Pump/Master Valve output 2, and status light (return P/M wire to [A]
Commons). Output is .320 Amps, max.
C. P/M1: Pump/Master Valve output 1, and status light (return P/M wire to [A]
Commons). Output is .320 Amps, max.
D. Hardwire terminal connection cover. Remove to install optional ACC-HWIM for
hardwired communications.
E. 24VAC: Always-on 24V test terminal, for locating valves in the field. Can also be
used to power low-draw sensor receivers such as Hunter WRC.
F. Flow Sensor connections (+ and -): connections for Hunter HFS flow sensor.
G. ET connections (+ and -): Not used.
H. Sensor Connections (1-4): Connections for up to 4 Clik-family sensors, or other
normally closed switch contacts.
24 VAC Test Terminal (constant 24V):
The Master Module features a “constant-hot” 24 VAC output which can be used as a test point
for locating valves in the field:
ACC Owner’s Manual Rev E
9/06 18 of 60

 After powering up the controller, attach the common wire to the COM terminals as
described above.
 Then, touch each wire to the terminal marked 24 VAC to identify the valve location.
 Each valve will open electrically when the wire is touched to the “24 VAC” terminal.
 After identifying the valve location, you may then insert the wire into the appropriate
terminal. This feature allows you to sequence the valves in the most logical order for the
user without damaging the controller by “sparking” the wires.
 The “24 VAC” terminal may also be used to power wireless Clik sensor receivers (see
Connecting a Rain or Freeze Sensor section).
Connecting the Master Valve(s) and/or Pump Start Relay(s)
The Pump/Master valve connections are located in the upper right of the Master Module, which
is in the upper left corner of the controller itself.
Locate the P/M1 and P/M2 screw terminals on the Master Module.
These outputs are designed to supply 24VAC, .320 A max, for a
single Master Valve solenoid or a Pump Start Relay (or Relay
Booster).
The return wire from each P/M device (solenoid or relay) must be
connected to one of the COM terminals on the lower terminal strip of
the Master Module.
Connect one output wire from each Pump relay or Master Valve
solenoid to the desired 24VAC P/M terminal.
Connect the return wire to one of the terminals marked COM
immediately below the P/M outputs.
Configuration of the P/M terminals is covered in the Set Pump Operation section of the
Programming and Operations portion of this manual.
Connecting a Rain or Freeze shut off device (optional & not included)
Up to 4 Hunter Cliksensors can be connected to the ACC controller, including:
 Mini-Clik
 Rain-Clik (including Wireless Rain Clik)
 Freeze-Clik
 MWS Mini-weather station, etc.
Hunter Flow-Clik can also be connected, but it is recommended that
the Hunter HFS Flow Meter be used instead.
In the ACC controller, Clik sensors shut down individual programs,
not necessarily the entire controller. Each sensor can be given its own
response instructions by program.
Hunter Clik sensors are usually normally closed, and open on alarm.
This signals the controller to suspend irrigation. Other dry contact
ACC Owner’s Manual Rev E
9/06 19 of 60

closure sensors can be used without warranty, provided that a) they require no voltage and b)
open the circuit when a shutdown condition is sensed. Hunter makes no claims or representations
that such connections will be effective.
 To connect Clik sensors, locate the SEN [1-4] terminals on the Master Module (upper
right corner of controller).
 Route the pair of wires from each sensor into the cabinet through one of the low voltage
conduit openings in the bottom of the enclosure.
 The sensor connections are made in dedicated pairs: one wire to the sensor number +
terminal, the other wire from the sensor to its – terminal. Do not twist common wires
together from different sensors and connect them to the same terminal.
 Loosen the screw for the first sensor terminal (SEN1), and connect either of its wires to
the + terminal and tighten.
 Connect the other wire from that sensor to the SEN1 – terminal and tighten.
 To connect the wireless Rain Clik (WRC) or wireless Rain-Freeze Clik receiver, consult
the instructions supplied with the WRC for mounting and addressing.
 Connect either of the receiver’s Yellow power wires to the “24 VAC” terminal on the
Master Module (the “24 VAC” terminal has a 400mA maximum capacity and is adequate
for Clik receivers).
 Connect the other Yellow receiver wire to any of the COM terminals.
 Complete the wireless Clik installation according to the WRC instructions.
All additional programming is performed at the facepack and is described in the Set Sensor
Operation section of Programming and Operations.
 Connecting the ET Module (optional & not included)
To connect a Hunter ET System to the ACC controller, use the adapter supplied with the ET
System made especially for ACC.
The adapter has SmartPort pins to align with the SmartPort plug on the upper left of the
controller. It also has a color-coded terminal strip for ET System under its back cover. All ET
System connections must be made at the wiring terminals in the adapter. The adapter is then
pressed into place on the ACC SmartPort connector.
This allows ET System to remain operational, while providing at the
same time for ICR (or SRR) remote receiver installation.
Connecting the Hunter Flow Sensor (optional & not included)
The Hunter HFS Flow Meter is the primary flow meter for which
ACC flow functions have been designed. Additional types of flow
sensor connections may also be possible. Consult flow sensor m
for wiring and calibration information. anual
ACC Owner’s Manual Rev E
9/06 20 of 60