Kisae SW2420 User manual

24V Input
2000W
True Sinewave
Power Inverter
SW2420 (120V model)
SW2420i (230V model)
Owner’s Manual
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For safe and optimum performance, the Power Inverter must be used properly. Carefully read and follow
all instructions and guidelines in this manual and give special attention to the CAUTION and WARNING
statements.
PLEASE KEEP THIS MANUAL FOR FUTURE REFERENCE
Disclaimer
While every precaution has been taken to ensure the accuracy of the contents of this guide, KISAE
Technology assumes no responsibility for errors or omissions. Note as well that specifications and
product functionality may change without notice.
Important
Please be sure to read and save the entire manual before using your KISAE True Sinewave Power
Inverter. Misuse may result in damage to the unit and/or cause harm or serious injury. Read manual
in its entirety before using the unit and save manual for future reference.
Product Numbers
120V model:
SW2420 Power Inverter 24V 2000W 120VAC (NEMA 5-20)
230V Model:
SW2420i-EU Power Inverter 24V 2000W 230VAC (Schuko Socket - CEE 7/4)
SW2420i-UK Power Inverter 24V 2000W 230VAC (British Socket - BS1363)
SW2420i-AU Power Inverter 24V 2000W 230VAC (Australia Socket – NS/NZS3112)
Document Part Number
MUSW2420 Rev A (Nov 30, 2015)
Service Contact Information
Email:[e-mail]
Phone : [phone]
Web :www.kisaepower.com

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Table of Contents
1.INTRODUCTION................................................................................................ 4
2.PRODUCT DESCRIPTION............................................................................... 5
3.INSTALLATION ................................................................................................. 5
4.UNIT OPERATION............................................................................................. 8
5.TROUBLESHOOTING...................................................................................... 9
6.SPECIFICATIONS........................................................................................... 10
7.WARRANTY..................................................................................................... 11

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1. INTRODUCTION
Thank you for purchasing the KISAE True Sinewave Power Inverter. With our state of the art, easy
to use design, this product will offer you reliable service by providing AC power and 5V USB power
for your home, cabin, boat, RV or Trailer. The Power Inverter can run many AC-powered
appliances when you need AC power anywhere. The 5V USB power can charge many USB-
powered devices.
This manual will explain how to use this unit safely and effectively. Please read and follow these
instructions and precautions carefully.
IMPORTANT SAFETY INFORMATION
This section contains important safety information for the True Sinewave Power Inverter. Each
time, before using the unit, READ ALL instructions and cautionary markings on or provided with
the unit, and all appropriate sections of this guide.
The unit contains no user-serviceable parts. See Warranty section for how to handle product
issues.
DANGER: Fire and/or Chemical Burn Hazard
•Do not cover or obstruct any air vent openings and/or install in a zero-clearance compartment.
DANGER: Failure to follow these instructions can result in death or serious injury
•When working with electrical equipment or lead acid batteries, have someone nearby in case of
an emergency.
•Study and follow all the battery manufacturer’s specific precautions when installing, using and
servicing the battery connected to the inverter.
•Wear eye protection and gloves.
•Avoid touching your eyes while using this unit.
•Keep fresh water and soap on hand in the event battery acid comes in contact with eyes. If this
occurs, cleanse right away with soap and water for a minimum of 15 minutes and seek medical
attention.
•Batteries produce explosive gases. DO NOT smoke or have an open spark or fire near the
system.
•Keep unit away from moist or damp areas.
•Avoid dropping any metal tool or object on the battery. Doing so could create a spark or short
circuit which goes through the battery or another electrical tool that may create an explosion.
WARNING: Shock Hazard. Keep away from children!
•Avoid moisture. Never expose unit to snow, water etc.
•Unit provides high voltageAC; treat the AC output socket the same as regular wall AC sockets
at home.
WARNING: Explosion hazard!
•DO NOT use the unit in the vicinity of flammable fumes or gases (such as propane tanks or
large engines).
•AVOID covering the ventilation openings. Always operate unit in an open area.
•Prolonged contact to high heat or freezing temperatures will decrease the working life of the unit.
FCC and EMC INFORMATION
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules on 120V model and to comply with the limits for CE EMC
standard on 230V model. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
•Re-orient or relocate the receiving antenna.

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•Increase the separation between the equipment and the receiver.
•Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
•Consult the dealer or an experienced radio/TV technician for help.
LIMITATIONS ON USE
Do not use in connection with life support systems or other medical equipment or devices.
2. PRODUCT DESCRIPTION
The True Sinewave Power Inverter includes the items list below.
•Power Inverter base unit
•Owner’s manual
Series Model No. Output Rating AC Output Socket Types
120V model SW2420 2000W 20A GFCI
230V model SW2420i-EU,UK,AU 2000W 16A(EU), 13A(UK), 10A(AU)
3. INSTALLATION
WARNING:It is recommended that all wiring be done by a certified technician or
electrician to ensure adherence to the applicable electrical safety wiring regulations and
installation codes. Failure to follow these instructions can damage the unit and could also
result in personal injury or loss of life.
CAUTION:Before beginning unit installation, please consider the following:
•The unit should be used or stored in an indoor area away from direct sunlight, heat, moisture
or conductive contaminants.
•When placing the unit, allow a minimum of three inches of space around the unit for optimal
ventilation.
Understanding the unit features
AC Output Front Panel
SW2420 (120VAC model)
SW2420i-EU (230VAC Model)
Status Indicator
Display
‘Power/Select’ On/Off button
Remote Switch Port (RJ12 Port
for optional remote switch)
USB Output
AC Output Sockets
Status Indicator
Display
‘Power/Select’ On/Off button
Remote Switch Port (RJ12 Port
for optional remote switch)
USB Output
AC Output GFCI Socket

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DC Input Rear Panel
Preparing for Installation
Typical Wiring block diagram of charger:
24V Battery Bank:
•The use of a deep cycle battery is highly recommended for power inverter application
•For battery size, you need to identify what you wish to operate, and for how long. It is
recommended that you purchase as much battery capacity as possible. See more in
“Estimated Run Time” in Section 4.
DC Fuse or Circuit Breaker:
•DC-rated fuse or DC-rated circuit breaker connected along the DC positive line is required.
Fuse/Circuit Breaker Rating 150 Adc
•Based on the size of your 24V Battery Bank, determine the overall short circuit current rating
of the battery bank from the battery manufacturer. The fuse or circuit breaker chosen has to be
able to withstand the short circuit current that may be generated by the battery bank
•For Marine application, the over-current protection device needs to be installed within 7 inches
(17.8cm) from the battery positive terminals.
DC Disconnect Switch:
•Use a 24V or higher rated DC Disconnect Switch with the same or higher rating as the
selected fuse or circuit breaker. Use ignition protected switches when required by local codes.
•The DC Disconnect Switch is used to disconnect the DC power between the unit and the
battery bank during service, maintenance or trouble shooting.
DC Input Cable Size:
•All DC cables require insulated multi-strand low resistance cable.
•The DC cables must be copper and must be rated 105Ԩminimum.
Model Minimum Wire Size Recommended Cable Length
SW2420, SW2420i AWG # 2 < 5 feet
Caution: Use of smaller gauge cable or longer cable length may cause the inverter to
shutdown under heavy load. It may also melt the cable insulation and catch fire and can result
in death or serious injury. Choice of the cable size should also match with the rating of the DC
fuse used.
Important: The recommended cable length is limited to < 5 feet. This is due to the
consideration of voltage drop between the battery and the unit. Select a bigger size cable if
Fan
opening
DC Terminals
Positive +
Negative –
Chassis Ground

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long cable length is required.
Chassis Grounding Cable Size:
Important: The unit is grounded through the Chassis Ground (ground stud) located near the DC
Input terminal and the chassis of the unit has to be grounded properly before use.
•For Marine application, the DC grounding cable size may be one size smaller than the
minimum size conductor required for the DC current-carrying conductors and the conductor is
no smaller than #10AWG.
•For Recreational Vehicle or Caravan application, the unit has to be grounded to the vehicle
chassis with a minimum #8 AWG copper conductor.
Installing the Power Inverter System
WARNING: Electrical Shock Hazard
The unit ‘On/Off’ switch does not disconnect the DC power from the battery. Use the DC
Disconnect Switch or disconnect the DC input cables to disconnect the DC power from the
battery before working on any circuits connected to the unit. Failure to follow these
instructions can result in death or
serious injury.
Installation:
•Choose an appropriate mounting
location.
•For indoor use only, the unit can be
mounted in any direction except with
the DC Input panel facing downwards.
•Use the mounting template on the
right to mark the positions of the
mounting screws.
•Drill the 4 mounting holes and place
the Power Inverter in position and
fasten the unit to the mounting
surface.
Important: Field wiring DC terminals tightening torque 12-13 Nm
Chassis Grounding Connection:
DANGER:The unit chassis has to be grounded properly. Never operate the Power
Inverter without proper grounding. Failure to do so will result in death or serious injury.
•Connect the grounding cable’s ring terminal to the unit ground screw.
•Connect the other side of the cable to the common grounding point.
DC Input Connection:
CAUTION: Reversing the DC Input terminal will damage the unit and it cannot be
repaired. Damage caused by reverse polarity connection is not covered by the warranty.
•Connect the negative DC input cable between the Inverter DC negative terminal and battery
negative terminal.
•Make sure the DC Disconnect Switch is in the OFF position.
•Connect a positive DC input cable between the inverter DC positive terminal and one terminal
of the Disconnect Switch.
•Connect another DC input cable between the other terminals of the Disconnect Switch to one
side of the terminal of the fuse holder.
•Connect another DC input cable between the other terminal of the fuse holder and the battery
positive terminal.
•Install the selected fuse to the fuse holder.
Remote Switch (optional) Connection:
•Insert the Remote Switch accessory (RM1201-00) to the RJ11 ‘Remote Switch Port’ located

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at the Front AC panel of the Power inverter. Please note polarity.
Test the Power Inverter Connection:
•Turn unit on by pressing and holding the On/Off button on the main unit for about a second
until a beeping sound occurs. The ‘Status’ light turns on indicating the Power Inverter is ON.
Check the digital display showing measured battery voltage and output power alternatively.
Both AC output and 5V USB are now available.
•Plug in a small AC load like a 40W table lamp or small appliance to the AC socket to verify AC
is available. If AC is not available, check for error code on display or troubleshooting section.
The unit is successfully installed and functioning properly.
Test the GFCI Monthly: (SW2420 - 120V model only)
•Use the following instruction to perform a monthly test of the AC Output GFCI Socket to
ensure the GFCI is functioning properly.
•Turn unit on and plug a small AC load (e.g. 40W light bulb) to the AC Output GFCI Socket.
•Check that the AC load is ON.
•Press ‘Test’ button and observe a clicking sound. Check that the AC load is turned off.
•Press ‘RESET’ button and check that the AC load is back ON again.
Note: This test is performed when Power Inverter is ON.
4. UNIT OPERATION
Turn ON and OFF the unit
•Press and hold the “Power/Select” button for 1 second until a beep is sounded.
•Display will show the Load Sense setting “LS0” or “LS1” for a few seconds to indicate the load
sense setting (‘LS0’ = Load Sense function disabled, ‘LS1’ = Load Sense function enabled).
See more details in “Understanding and setting the Load Sense Function” below.
•Display will then show the measured battery voltage and output power alternatively. Status
LED will turn green. 5V USB and AC output are available.
•Press “Power/Select” button to turn unit off.
Remote ON /OFF Switch (Optional)
•If optional ‘Remote Switch’ is used, the ON/OFF momentary switch on the remote switch is
connected in parallel with the “Power/Select” button on the unit. The switch shares the same
function as the “Power Select” function on the unit.
Understanding the Display & Status LED
LED Display:
’LS0’ Display shows Load Sense setting (LS0 indicates load sense function is disabled)
’12.5’ Display shows measured battery voltage
‘0.80’ Display shows total output AC power in kW (800W as shown)
‘E01’ Display shows error or warning code. See Understanding the Error Code for details
Status LED:
Green: Unit operation is normal
Amber: Warning is detected. Unit will shutdown at any time. Please check Understanding the
Error Code and Troubleshooting section for details.
Red: Error is detected and unit has shutdown. Please check Understanding the Error Code
and Troubleshooting section for details.
Understanding the Load Sense Function
The unit load sense function reduces power consumption in order to conserve power draw from
the DC source. Every time when the unit is turned on, it shows the load sense setting once
(either “LS0” or ”LS1”) before it shows the battery voltage and O/P power level in the display.
When the load Sense function is enabled (“LS1”), the AC output of the unit switches ON once
every few seconds to detect the AC load connected to the unit. If the load connected is > 10W,
the AC output will remain ON continuously until the AC load is reduced to below 3W. It will than
resume back to ON/OFF function until it senses the load connected is > 10W again.

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Understanding the Error Code
Code Condition Corrective Action
E01 Input battery voltage is too low and unit
has shutdown Recharge battery immediately and restart unit
E02 Input battery voltage is too high and unit
has shutdown Check battery voltage or determine if any external charger is connected to the battery bank
E03 AC output is overloaded or short circuited
and unit has shutdown Check load connected to the output. Reduce load and restart the unit
E04 Internal temperature is too high and unit
has shutdown Turn unit off and wait for 15 minutes before restarting. Check if any object has blocked the
air flow of the unit
E05 Input battery voltage is low and warning
occurs Recharge battery as unit will shutdown shortly
E06 AC output load connected has sensed
high and is close to shutdown limit Reduce load
E07 Internal temperature is high and is close
to shutdown limit Reduce load and check if any ventilation of the unit is blocked
AC Load on Power Inverter
Although the Power Inverter can provide high surge power up to two times the rated output
power, some high surge loads like sump-pumps, heavy duty motors etc. may still trigger the
inverter protection system even though the load falls within the power rating of the inverter. A
higher power Inverter is required for these appliances.
Estimated Run time
Following run times are estimates for reference. It is based on using different battery bank sizes.
Actual run times may vary. Estimate run time on different 24V Battery Bank Sizes
AC Load 30AH 60AH 90AH 120AH 150AH
50 W 11 hrs. 22 hrs. 33 hrs. 44 hrs. 55 hrs.
100 W 5 hrs. 11.5 hrs. 17 hrs. 23 hrs. 29 hrs.
200 W 2.5 hrs. 5 hrs. 8 hrs. 11 hrs. 13.5 hrs.
500 W 49 mins 2 hrs. 3 hrs. 4 hrs. 5 hrs.
1000 W 15 mins 49 mins 1.5 hrs. 2 hrs. 2.5 hrs.
1500 W 8 mins 27 mins 49 mins 1 hr 1.5 hrs
2000 W N.R. 15 mins 34 mins 49 mins 1 hrs
Note: N.R. - Not Recommended
Following run time is an estimate based on the typical load using a 24V-60AH battery bank for
reference. Actual run time may vary.
Load Consumption Estimate Run time
Cordless Phone 5W 180 hrs.
Clock/Radio 8W 135 hrs.
Table Lamp 40W/60W 27 hrs. / 18 hrs.
Freezer (8.8 cu. ft.) 80W 15 hrs.
20” LCD TV 100W 11.5 hrs.
Refrigerator (18 cu. ft.) 120W 9 hrs.
Sump Pump (1/2 hp) 350W 3 hrs.
Microwave (mid-size) 1000W 49 min
Coffee Maker 1200W 37 min
5. FEATURE SETTING
To understand more about the unit features, read the following section and follow the instructions
to make changes to the desired setting.
Default Factory Setting:
“LS0” = Load Sense feature is disable
Understanding and Setting the Load Sense Function:
The load sense feature allows you to reduce the no load current draw when no AC load is
connected to the inverter. To enable/disable the Load sense function, Press and hold the

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“Power/Select” button for 5 second to enter Load Sense select mode, display shows current
setting (“LS0” = Load sense is disable, “LS1” = Load Sense is disable). Press “Power/Select”
button once to change setting. The unit will automatically exit the select mode after 5 seconds.
6. TROUBLESHOOTING
To troubleshoot the unit, please note the error code displayed on the main unit and review
“Understanding the Error Codes” in section 4.
Problem Possible Cause/Condition Solution
The unit is off. Turn the unit ON (Press and hold the “Power/Select”
button for a second until a beep is sounded)
No AC Output. All
the LEDs and the
display are off. No power coming into unit. Check if the DC Fuse or the DC Disconnect switch (if
installed) is either blown or turned OFF.
Check error code on display Verify the error condition and make correctionNo AC Output.
Status LED is in
Amber GFCI on 120V model
(SW2420) is tripped Check load for Ground Fault and reset the GFCI
AC Output is
turning ON and
OFF every few
seconds
Load Sense function is
enabled and Load connected
to unit is less than the
threshold setting. (<10W)
Disable Load Sense function by changing the unit
setting or increase the AC load connected to unit to
>10W
7. SPECIFICATIONS
Note: Specifications are subject to change without notices. True Sine Wave Series
Specification SW2420 SW2420i -EU,UK,AU
Inverter
AC Output Power 2000W
AC Output Current 16.7A 8.7A
AC Surge Power (Peak) 4000W
AC Output Voltage / Frequency 120 VAC / 60 Hz 230 VAC / 50 Hz
AC Output Waveform True Sinewave
AC Output Socket 2 pc ( 20AGFCI) 2 pc
Nominal DC Input Voltage 25.0 VDC
No Load battery draw < 0.6 ADC (with Load Sense OFF)
< 0.1 ADC (with Load Sense ON)
DC Input Voltage operating range 21.0 – 31.0 VDC
Under Voltage Alarm 22.4 VDC
Under Voltage Shutdown 21.0 VDC
Under Voltage Recovery 23.6 VDC
Over Voltage Shutdown 31.0 VDC
Load Sense
‘ON’ Threshold >10W
‘OFF’ Threshold < 3W
USB
USB Port 5V, 2.1 A
Safety and Environmental
Conformance cETLus CE EMC & LVD
Agency Markings ETL CE
Operating Temperature 0°C to 40°C (32°F to 104°F)
Storage Temperature -20°C to 60°C (-4°F to 140°F)
Relative Humidity 5-90% noncondensing
Operating Altitude Up to 9,843ft (3000m) above sea level
Weights and Dimensions
Weights 11.5 lbs. (5.2 kg)
Dimensions 16.3 x 9.1 x 4.3” ( 41.4 x 23 x 11 cm)

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8. WARRANTY
One Year Limited Warranty
The limited warranty program is the only one that applies to this unit, and it sets forth all the
responsibilities of KISAE. There is no other warranty, other than those described herein. Any
implied warranty of merchantability of fitness for a particular purpose on this unit is limited in
duration to the duration of this warranty.
This unit is warranted, to the original purchaser only, to be free of defects in materials and
workmanship for one year from the date of purchase without additional charge. The warranty does
not extend to subsequent purchasers or users.
Manufacturer will not be responsible for any amount of damage in excess of the retail purchase
price of the unit under any circumstances. Incidental and consequential damages are specifically
excluded from coverage under this warranty.
This unit is not intended for commercial use. This warranty does not apply to damage to units from
misuse or incorrect installation/connection. Misuse includes wiring or connecting to improper
polarity power sources.
RETURN/REPAIR POLICY:
If you are experiencing any problems with your unit, please contact our customer service
department at [e-mail] or Phone [phone] before returning product to
retail store. After speaking to a customer service representative, if products are deemed non-
working or malfunctioning, the product may be returned to the purchasing store within 30 days of
original purchase. Any defective unit that is returned to manufacturer within 30 days of the date of
purchase will be replaced free of charge.
If such a unit is returned more than 30 days but less than one year from the purchase date,
manufacturer will repair the unit or, at its option, replace it, free of charge. If the unit is repaired, new
or reconditioned replacement parts may be used, at manufacturer’s option. A unit may be replaced
with a new or reconditioned unit of the same or comparable design. The repaired or replaced unit
will then be warranted under these terms for the remainder of the warranty period. The customer is
responsible for the shipping charges on all returned items.
LIMITATIONS:
This warranty does not cover accessories, such as adapters and batteries, damage or defects result
from normal wear and tear (including chips, scratches, abrasions, discoloration or fading due to
usage or exposure to sunlight), accidents, damage during shipping to our service facility, alterations,
unauthorized use or repair, neglect, misuse, abuse, failure to follow instructions for care and
maintenance, fire and flood.
If your problem is not covered by his warranty, call our Customer Service Department at
[e-mail] or 1-877-897-5778 for general information if applicable.

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Service Contact Information
Email:[e-mail]
Phone : [phone]
www.kisaepower.com
Printed in China