ACDC KF-20DW/ZCDC12V User manual

Copyright Ó 2020 ACDC. All Rights Reserved. All trademarks are owned by ACDC or its affiliated
companies.
ACDC
User Manual
Version 1.1
10/16/2020

ACDC 12V Air Conditioner Table of Contents
ii
Document Number: Doc-ACDC-2020-JLee-rev1
Product Number: KF-20DW/ZCDC12V
The latest version of this manual is available at
www.fleetwelcome.com
Velo Solar LLC
3450 Sterling Woods Drive
Eugene, OR 97408

ACDC 12V Air Conditioner Table of Contents
iii
Table of Contents
1.!Introduction ............................................................................................................... 4!
2.!Installation ................................................................................................................. 5!
2.1!Mount Outdoor Unit ............................................................................................ 5!
2.2!Mount Indoor Unit .............................................................................................. 5!
2.3!Connect Outdoor and Indoor Unit ...................................................................... 6!
2.4!Connect Batteries .............................................................................................. 6!
3.!Getting Started .......................................................................................................... 7!
3.1!Fuse Considerations .......................................................................................... 7!
3.2!Battery Considerations ....................................................................................... 7!
3.3!Powering Up the ACDC System ........................................................................ 7!
3.4!Remote Controller Operation ............................................................................. 7!
3.5!Exiting the System ............................................................................................. 7!
4.!System Upgrade Recommendation ........................................................................ 8!
4.1!Battery System ................................................................................................... 8!
4.2!Solar Panels and Inverter .................................................................................. 8!
4.3!Shore Power ...................................................................................................... 8!
4.4!Diesel Heater ..................................................... Error! Bookmark not defined.!
5.!Maintenance and Troubleshooting .......................................................................... 9!
5.1!Regular Maintenance ......................................................................................... 9!
5.2!Troubleshooting ................................................................................................. 9!
5.3!Support .............................................................................................................. 9!
List of Tables
Table 1 - Support Points of Contact ................................................................................. 9!

ACDC 12V Air Conditioner Cool Air While Keeping the Earth Clean
4
1. Introduction
This user manual provides the information necessary to effectively use the ACDC 12V air
conditioner. ACDC 12V air conditioner is an ideal no-idle air conditioning solution for heavy-haul
truck and RV. Features of ACDC can be represented as:
• High efficiency. 2000W cooling capacity with 6000BTU cooling power.
• Less power consumption. Typical power consumption ranges in 300W-795W, and rated
current 25A-66A. For example, LiFePO4 200Ah battery can support 4-7hour long
operation.
• Low voltage disconnect protection. Automatically disconnects power to the system if the
battery power is lower than the vehicle’s starting voltage.
• Outdoor unit can be installed in any direction, either wall-mounted or horizontally on the
rooftop in a suitable position outside the vehicle.
• Vibration-resistant flexible rubber hoses.
• Cooling comfort without idling engine saves fuel, reduces engine wear, extends
maintenance interval.
• No CO2 emission.
• Quiet operation. Ductless split type air conditioner makes the cab quiet.

ACDC 12V Air Conditioner Cool Air While Keeping the Earth Clean
5
2. Installation
Unpack the shipping box and check if the equipment is damaged, missing, or
misplaced. The overall assembly is very simple and straightforward and can be done
independently.
2.1 Mount Outdoor Unit
The outdoor unit is mounted on backside of the truck. Special installation equipment is
required to mount the unit on the outer wall. First, mark the hole positions according to
the corrugated template (see below). There are 4 hole marks at 0.5” from the edges of
the corrugated template and another 4 hole marks at 4.25” apart from the outer hole
marks. Inner hole marks are reserved optional for the wall-mounted orientation. Drill
holes that are just large enough to slide the rivet nuts into. Drill bit size of 11mm (7/16”)
is recommended for M8 rivet nuts. You may Rubber gaskets have already been
attached on the bottom of the 4 fixture legs. Keep the distance between the outdoor
unit and the indoor unit within 3m so the refrigerant hoses and electrical cable can
reach each other.
Figure. Overlapping the corrugated template on the outdoor unit
2.2 Mount Indoor Unit
The indoor unit is mounted inside the cab on the rear or side wall. Maintain the level so
the water can be drained properly. First, use the wooden board to provide a level surface. Open
the connector-retaining caps. You should be able to hear a hissing sound when you open them.
0.5”
16.5”
33.5”
4.25”
1”
Corrugated!template
33.5”!x!16.5”
Outdoor!unit
4!5/16”
7!7/8”

ACDC 12V Air Conditioner Cool Air While Keeping the Earth Clean
6
Otherwise, it could indicate that pressure leakage may have occurred during the transit. Contact
customer support for the troubleshooting.
2.3 Connect Outdoor and Indoor Unit
Connect the indoor and outdoor units by the rubber hoses. The low pressure hose is bigger in
diameter than the high pressure hose. Route all hoses and electrical wire through the opening
hole. A round hole with a diameter of 65mm is recommended for the opening hole. Attach the
retaining wall covers and sealing mud block to protect the hoses from sharp edges. Air purge
and vacuum the refrigerant hoses before commissioning the pre-filled R-134a for the first time.
Open the high pressure valve first, then the low pressure valve. Consult the local HVAC
specialist for the technical support.
2.4 Connect Batteries
A 12V battery is required to operate ACDC air conditioner. The power cable with in-line
fuse protection connects the outdoor unit and the battery. The battery can be placed in
the outside battery box or inside luggage compartment.

ACDC 12V Air Conditioner Cool Air While Keeping the Earth Clean
7
3. Getting Started
ACDC 12V air conditioner should be connected to DC 12V battery. Battery should be able to
power up ACDC with 10.5V or above and 16.5V or less. Electrical cable is equipped with the in-
line fuse for protection.
3.1 Fuse Considerations
1. Visually inspect if the in-line fuse is OK. Replace the fuse with 100A or higher.
2. To ensure moisture ingress protection degree IP65, make sure the cover is correctly
positioned and sealed with o-ring.
3.2 Battery Considerations
1. Check the polarity of the DC voltage before you connect the battery.
2. Provide an additional fuse for battery protection as recommended by battery
manufacturer.
3. ACDC has a low voltage protection at 10.0V. Contact battery manufacturer if battery
voltage curve falls in adequate range.
3.3 Powering Up the ACDC System
Remote controller can turn on and off the ACDC system. Press the ON button to power up.
Indoor unit can indicate the working condition and display the temperature setpoint. Check if the
outdoor unit power up to cool down the temperature.
3.4 Remote Controller Operation
Press the mode button to change the air conditioning condition from AUTO to COOL to DRY to
FAN. AUTO mode controls the cooling mode and fan speed automatically. Push the TEMP UP
and DOWN button to change the target temperature. Refer to the remote controller manual for
detailed operation.
3.5 Exiting the System
ON/OFF button can turn the ACDC off.

ACDC 12V Air Conditioner Cool Air While Keeping the Earth Clean
8
4. System Upgrade Recommendation
Understanding how electrical system works helps ACDC deliver the high efficiency and safety.
Here are some recommendations to keep ACDC up to the best performance.
4.1 Battery System
ACDC 12V air conditioner runs on 12V DC electricity. Extend your run-time and stay
comfortable throughout the day and night with auxiliary power unit. Add an isolator relay to
ensure that main battery will be able to change and always stay healthy at the same time
regardless of the state of the auxiliary battery. Add a cutoff switch for the cold weather period.
4.2 Solar Panels and Inverter
Sun does not send a bill for the free solar energy. Cost per Watt for solar panels drops every
year due to the advance in technology and the economy of scale. Trickle charging by the solar
energy makes sense especially when you need the air conditioning. Add an inverter so you can
use the off-grid AC appliance.
4.3 Shore Power
Shore power connection makes you enjoy 120V power source to keep batteries charged and
ACDC systems running in full speed.

ACDC 12V Air Conditioner Cool Air While Keeping the Earth Clean
9
5. Maintenance and Troubleshooting
5.1 Regular Maintenance
Every 6 months the following check should be done.
• Check in-line fuse!
• Check fan of the outdoor unit!
• Check air filter of the indoor unit
• Check crimp connection of the battery !!!!
5.2 Troubleshooting
• Power up trouble can be mostly determined by the battery condition. Check if the in-line
fuse needs to be replaced.
• Check if the fan of the outdoor unit works
• Fan makes noise if the air filter needs to be cleaned
• Always check the battery status.
5.3 Support
Feel free to get in touch at customer support. We would be happy to help. In an attempt to
practice safe social distancing we prefer using email or phone communication. Visit
www.fleetwelcome.com for more technical details.
Table 1 - Support Point of Contact
Contact
Website
Phone
Email
Role
JinWoo Lee
www.fleetwelcome.com
[phone]
[email protected]
Customer Support