• Align the three retainers on back of the controller housing onto the
mounting bracket and lower it into place.
• For additional security, install a bottom cen-
ter mounting screw from the inside of the
controller. Drive the provided screw through
the mounting notch located just below the
zone modules to secure the controller to the
bracket.
2B. Installing Without Quick Mount Bracket
• Determine mounting height for easy viewing and be sure to mount low
enough for field wires to reach controller wiring terminals and test post
at top of controller.
• Install a wall anchor in the desired location.
This will be for the top/center hanger hole of
the controller.
• Install one of the mounting screws provided
into the wall anchor.
Hang the controller on the mounting screw by
positioning the controller on the head of the
mounting screw. Check the controller for level,
then drive a 2nd screw into the “notch” inside
the bottom/center location to mark position for second anchor. Remove
controller from top keyhole and install second anchor and then remount
controller and tighten both screws to secure unit.
3. SLM4 Module Installation
• The SL1600 controller is equipped with one 4-zone module (SLM4).
Additional SLM4 modules may be added to expand capacity to 16
zones. The SL1620 has 20 fixed zones; the SL1624 has 24 fixed zones.
The SLM4 module is useable only on the SL1600.
• The SL1600 controller will automatically recog-
nize the additional zones as they are installed.
No special programming or resetting is
required to initialize the modules.
• You can insert or remove a module without
removing power from the controller.
• To install a module, push the module into
the channels until you feel it lock in place. To
remove a module, push DOWN on the center release panel on the top
of the module and use the top tab to pull it out.
4. AC Power Wiring
• Plug the included 6-foot line cord into a 120VAC outlet.
(E-SL1600
units for international use are prewired for 230VAC.)
• Do NOT use a switch controlled wall outlet for operating an irrigation
controller.
TEST
AC1
SE
N
SE
N
CO
M
P
/M
V
RE
D
BLAC
K
SIL
VER
Note: Modules must be inserted in the sequence of numbered
zones. Do not leave any gaps in module positions.
TEST
AC1
SE
N
SE
N
CO
M
P/MV
RE
D
BLAC
K
SIL
VER
1. Controller Installation
All SL1600 controller housings are designed for indoor or outdoor instal-
lation. Your SL1600 controller can be located in any convenient spot such
as inside the garage or on an outside wall. It is recommended that you
choose a location where the irrigation system will not be spraying directly
on the controller, in the event the housing door is left open.
• Open the
controller’s
front door,
then open the
control panel
of your SL1600
controller.
• Remove the
control panel
from the
SL1600 con-
troller housing
by pushing
upward and outward to remove from the hinges, then set the control
panel aside in a safe place.
• Mount the SL1600 controller with or without the SL1600 controller Quick
Mount bracket.
2A. Installing With Quick Mount Bracket (recommended)
• Determine mounting height for easy viewing and be sure to mount low
enough for field wires to reach all controller wiring terminals and test
post at top of controller.
• Place the mounting bracket against the
wall so that the word “CONTROLLER
SIDE” is visible and the open ends of the
housing retainers are pointing upward.
• Using one of the mounting screws (or a
pencil) mark the location onto the wall of
the top/center hole (see photo).
• Install a wall anchor in the marked
position then install the bracket onto
the anchor using one of the mounting screws provided (do not tighten
screw fully yet). The center screw will automatically level the bracket on
the wall. After level is set, mark the other mounting holes and install the
remaining wall anchors.
• Install other screws through bracket into anchors (except for bottom cen-
ter screw) and tighten all screws.
TEST
AC1
SEN
SEN
COM
MV/
P
RED
BLACK
SIL
VER
TEST
AC1
SEN
SEN
COM
MV/
P
RED
BLACK
SIL
VER
AC Wiring Cavity
with panel removed
MOV
(Metal
Oxide Varistor)
Installed SLM4 Modules
AC Wiring
Cavity panel
Optional SLHUB
Communication Hub
Transformer Test
Post
SL1600 Interior Layout
SL1600 Controller Installation Instructions
®
Optional
SLHUB
CONTROLL
THIS
™
