IOTA DLS-27-40 User Manual
Page 2
INSTALLATION GUIDELINES
mOUNTING LOCATION
The IOTA Power Converter/Battery Charger can be mounted in
any position within an enclosed or interior compartment. Provide
sufficient air space to allow unrestricted airflow in and around
the unit. Provide at least 4
″ around the fan of the DLS to allow
for proper air intake.
DO NOT mount the unit in a zero clearance compartment.
DO NOT mount the DLS in the same compartment with
flammable items such as gasoline or batteries. There are no
components within the DLS unit that, during normal operation,
produce arcs or sparks. However, all electronic devices have
some potential for generating sparks in the event of failure which
can result in explosion or fire.
DO NOT mount the DLS in an area that has the potential of dust,
debris, or other foreign materials to enter in through the DLS vents.
DO NOT place the DLS directly above the battery; the gases
from the battery can corrode and damage the DLS.
bATTERY CONNECTION
Before you connect the DLS to the battery, make sure that the
AC power cord is NOT plugged into an electrical outlet.
Disconnect the positive side of the battery before installation.
Connect the positive (red) and negative (black) terminal lugs
to battery or load. Always use the proper size wire based on
the amperage of the converter and the battery. Recommended
wire gauge and torque are as follows: 4-6 AWG at 45 in. -lbs, 8
AWG at 40 in. -lbs. Refer to Illustration 1. Recreational vehicle
applications require a type III circuit breaker be installed within
18
″
of the battery, connecting the battery positive to the line
side of the breaker, and the IOTA unit to the load side. Connect
“Chassis Bonding Lug” on the IOTA unit to vehicle chassis or
other grounding source. Refer to Illustration 1.
120 VOLT A.C. INPUT
Plug the unit A.C. input cord into an appropriate 120-volt 3-wire
grounded source. Refer to Illustration 2 for specifications of the
cord provided with your DLS unit. See the Technical Specifica-
tions Chart on page 4 for maximum current draw and required
input voltages.
DO NOT USE EXTENSION CORDS - Using an improper exten-
sion cord could result in a risk of fire and electric shock, and may
result in property damage, personal injury or death.
DO NOT OPERATE THE DLS WITH A DAMAGED CORD OR
PLUG. Have the cord or plug replaced immediately by qualified
service personnel.
REVERSE POLARITY FUSES
The IOTA Battery Charger/Power Supply is protected against
reverse polarity on the DC output. If a battery or the unit is
hooked up incorrectly, the fuses will blow and can be easily
replaced. Always use the same size and style fuse that came
with the converter. To change the fuses, use a screwdriver
to loosen the screws and remove the fuses. Always replace
the fuses with the same type and rating. After inserting the
new fuses, tighten the screws firmly. Apply 8 inch-pound
maximum torque. DO NOT OVERTIGHTEN. Note: some DLS
models require only one fuse. For these units, a small fiberglass
spacer may be used in the empty fuse slot to aid with tightening.
IOTA DLS Series Power Converter/Battery Chargers con-
vert 120 volts nominal A.C. to 27.2 volts D.C. As a power
supply, its tightly controlled regulation allows the user to
operate any 24 volt nominal D.C. load up to the converter’s
rated output current. As a battery charger, the converter will
maintain the battery, delivering its full-rated current when
the battery capacity falls sufficiently low. The voltage is set
to deliver its maximum current for the necessary period of
time that minimizes undue stress to the battery caused by
heating of its cells. This helps to ensure the longest pos-
sible life of the battery. Over time, as the battery nears its
full capacity, the converter will float-charge the battery to
prevent self-discharge of its cells.
PROTECTION FEATURES
The IOTA Power Converters/Battery Chargers are de-
signed with high quality components to help ensure
years of continuous use. The unit is protected by multiple
protection features for a long, trouble-free life.
1) Reverse Battery Polarity Protection. 2) Brown-Out In-
put Protection. 3) Over-Current Protection - cycle by cycle
peak limiting as well as rated current limiting to maximize
the life of the converter. 4) Over-Temperature Protection.
In addition, it is designed with a unique “proportional” fan
control circuit. Fan speed is directly proportional to the
converter’s internal ambient temperature. This enables
the fan to turn on and off very slowly, minimizing unwanted
fan-starting noise.
The IOTA Power Converters/Battery Chargers are war-
ranted from defects in materials or workmanship for two
years from date of retail purchase, and limits the remedies
to repair or replacement. This warranty is valid only in
the continental United States and Canada. For com-
plete warranty details, contact Customer Service or visit
www.iotaengineering.com.
WARRANTY
PRODUCT DESCRIPTION