Lezeti ACDC12B User manual

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© 2015 CLIMA-TEKNOLOGIES, LLC
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INSTALLATION GUIDE
MODEL: ACDC12(B)
LEZETI HYBRID ACDC12B_MANUAL_V2.1

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ACDC12B Solar Air Conditioner Heat Pump
Installation Manual
Before installing or using your solar air conditioner, please print and read
this manual carefully and keep it for future reference.
Notice To Owner/Installer
This unit is designed for easy installation by an experienced person. It is
legal for a homeowner to install it, however we highly recommend using a
licensed HVAC technician for installation.
Legal Information About Self-Installing R410A Air Conditioners
A homeowner with a vacuum pump, proper training, and equipment can install this unit. Unless you are
experienced with installing air conditioners we recommend you hire a professional installer. The person
who installs the system must do all work in compliance with local building and electrical codes.
Are there any restrictions on the purchase of R410A refrigerants?
R410a is not an ozone-depleting substance. At this time the purchase of R410a refrigerant is not
restricted in the US. There is no technician certification requirement for those that purchase HFC
refrigerants, such as R-410a or R-134a. If you are not licensed, some local HVAC supply companies may
refuse to sell you R410a based on a misunderstanding of the law, or because they wish to discourage
homeowners from working on their own systems.
Are there any restrictions on the use of R410A refrigerants?
Yes, it is illegal to knowingly vent or release these refrigerants. The venting prohibition applies to R410a,
and all other HFC refrigerants, just as it does for ozone-depleting refrigerants like R-22.
Is EPA technician certification required to service R410A systems?
No, at this time EPA technician certification is not required in order to service R-410a systems.
Source: http://www.epa.gov/ozone/title6/phaseout/technicians_contractors_faq.html
Please read this installation manual completely before installing the product. If the power cord is damaged,
replacement must be performed by authorized personnel only. Installation work must be performed in accordance
with the NEC and local codes. You should contact a licensed service technician for installation, repair, or
maintenance.
Improper installation could damage the system and/or void the warranty and could result in injury, death, or property
damage.
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INSTALLERS, Please read the following warnings to
prevent voiding warranties:
!WARNING: Make sure the PV panels are wired in PARALLEL, NOT
SERIES. Verify voltage is within range prior to connecting to the ODU DC
breaker.
WARNING: Voltage from breaker box to ODU disconnect should be 220V
(measured between L1 and L2.) See page 16, figure 24.
WARNING: E1 – error codes, “lack of signal” - IDU is not receiving signal from
the ODU. (L1 and L2 lines may be swapped, reference Service manual pg. 32)
WARNING: Do not use the SIGNAL WIRE As the POWER LINE (L1, L2) or
Ground. (reference Installation Manual Figure 24, pg. 16)
WARNING: Connect: (AC – AC) and the (DC – DC), at the ODU.
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Table of Contents
SAFETY PRECAUTIONS
Warning……………………………………………………………………………………………………….4
Caution……………………………………………………………………………………………………….. 4
INSTALLATION INSTRUCTIONS
Selecting installation location……………………………………………………………………………….5
Indoor unit installation……………………………………………………………………………………….5
Outdoor unit installation…………………………………………………………………………………….. 5
REFRIGERANT PIPE CONNECTION
Refrigerant pipe connection………………………………………………………………………………... 10
AIR PURGING
Air purging with vacuum pump…………………………………………………………………………….. 12
Safety and leakage check………………………………………………………………………………….. 14
RUNNING TEST
Running Test………………………………………………………………………………………………… 14
ELECTRICAL WORK
Electrical work……………………………………………………………………………………………….. 15
Installation of the solar photovoltaic system……………………………………………………………… 18
Please Read and Print This Manual
Inside you will find many helpful hints on how to install and test the air conditioner properly.
CAUTION
•Contact an authorized service technician for repair or maintenance of this unit.
•Contact an authorized installer for installation of this unit.
•The air conditioner is not intended for use by young children or infirmed persons without
supervision.
•Young children should be supervised to ensure that they do not play with the air conditioner.
•If the power cord is to be replaced, replacement work shall be performed by authorized personnel
only.
•Installation work must be performed in accordance with the national wiring Standards by
authorized personnel only.

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SAFETY PRECAUTIONS
•Read the follow SAFETY PRECAUTIONS carefully before installation.
•Installation must be performed in accordance with the requirement of NEC and CEC by
authorized personnel only.
•Incorrect installation due to ignoring of the instruction will cause harm or damage.

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Installation Instructions
Select an installation location which is rigid and strong enough to support or hold the unit,
and select a location for easy maintenance. Read completely, follow instructions step by
step.
Indoor Unit Fig. 1
•Do not expose the indoor unit to heat or steam.
•Select a place where there are no obstacles in front of or around the unit.
•Make sure that the condensation drainage tube can be conveniently routed away.
•Do not install near a doorway.
•Ensure the spaces indicated by arrows from the wall, ceiling or other obstacles.
•A place where noise prevention is taken into consideration. Min. 3 ft. from a TV or other
electronic instrument.
•There should not be any direct sunlight on the indoor unit, sunlight may fade the color of the unit.
Outdoor unit Fig. 2
•If an awning is built over the outdoor unit it must be done in a way that does not block air flow to
the unit.
•Keep the spaces indicated by arrows from wall or other obstacles.
•Do not place animals and plants in the path of the air inlet or outlet.
•Take the air conditioner weight into account and select a place where noise,
•vibration, and hot air discharged will not be an issue.
•Do not install in a location exposed to flammable gas.
•Do not install high frequency machines such as a
welding machine near the air conditioner.

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Rooftop installation:
•If the outdoor unit is installed on a roof structure, be sure to level the unit.
•Ensure the roof structure and anchoring method is adequate for the unit location. Consult local
codes regarding rooftop mounting.
Recommended Tools For Installation:
Level gauge Hex Wrench
5mm
Screwdriver Leak Detector
Electric Drill Vacuum pump
Hole Saw Bit Gauge manifold
Flaring Tool User’s manual
Torque Wrench Thermometer
Adjustable Wrench Multi-meter
Tape Measure Pipe Cutter
R410A Service Port Adaptor

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Use a stud finder to locate wall studs. Directions A, B, C and D, should be free of obstacles.
INSTALLATION INSTRUCTIONS
Indoor unit installation
1. Fit the Installation Plate
1. Fit the installation plate horizontally on a
structurally sound part of the wall with spaces
around the installation plate.
2. If the wall is made of brick, concrete or the like
use anchor bolts.
3. Fit the installation plate on the wall with (8) type
“A” screws included.
Note:
Fit the installation plate and drill
holes in the wall according to the
wall structure and corresponding
mounting points on the installation
plate. The installation plate is different
from the ACDC12 A model.
Dimensions are in “mm/in” unless stated
otherwise.
4. Determine the hole positions according to the
diagram detailed in fig, 5. Drill (1) hole
(65mm/2.6 in.) slanting slightly to the outdoor
side. Fig. 6
5. Always use conduit when drilling through metal
grid, metal plate or the like.

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INSTALLATION INSTRUCTIONS
Line set and condensation drainage pipe
installation
6. Run the drain hose sloping downward. Do not
install the drain hose as illustrated in Fig.7.
When connecting extension drain hose,
insulate the connecting part of extension drain
hose with a shielded pipe, do not let the drain
hose slack.
7. For the right-hand piping, remove the pipe
cover from the side panel. (Optional)
Install the piping as shown.
NOTE: For ACDC12b"model, there are
left and right side drainage ports.
The connection of the drain hose is critical
to a successful installation and must be
done by a qualified installer to prevent
water leakage.
8. Bundle the tubing, connecting cable, and drain
hose with tape securely, evenly as shown in
Figure on the right.
9. The condensed water from the rear of the
outdoor unit is gathered in a ponding box and
is piped out of the room. Do not put any wires
in the box.
10. Pass the piping through the hole in the wall.
11. Put the upper claw at the back of the indoor
unit on the upper hook of the installation plate,
move the indoor unit side to side to see that it
is securely hooked (see Fig. 9 & 10).
12. Piping can be made easy by lifting the indoor
unit and placing a spacer between the indoor
unit and the wall.
13. Push the lower part of the indoor unit up on
the wall, then move the indoor unit from side
to side, up and down to check if it is hooked
securely.
14. Bundle the tubing, connecting cable and drain
hose securely and evenly with tape as shown
in Fig. 12.
CAUTION
•Connect the indoor unit first, then the
outdoor unit.
•Do not allow the piping to let out from the
back of the indoor unit.
•Be careful not to let the drain hose slack.
•Be sure that the drain hose is located at the
lowest side of the bundle. Locating at the
upper side can cause drain pan to overflow
inside the unit.
•Never intercross or intertwist the power
wires with any other wiring.

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Outdoor Unit installation
Outdoor installation precaution
Install the outdoor unit on a rigid base to prevent increasing noise level and vibration. Determine the
air outlet direction where the discharged air is not blocked. In the case that the installation place is
exposed to strong wind such as a seaside, make sure the fan operating properly by putting the unit
lengthwise along the wall or using a dust or shield plates.
In windy areas, install the unit to prevent the admission of wind. If you need a wall mount installation,
the installation bracket should be installed according to the installation bracket diagram.
The installation wall should be solid brick, concrete or the same intensity construction, or actions to
reinforce, damping supporting should be taken. The connection between bracket and wall, bracket
and the air conditioner should be firm, stable and reliable.
Be sure there is no obstacle which can block radiating air.
INSTALLATION INSTRUCTIONS
Accessories

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Note: Except the above parts provided, the other parts needed during installation
must be purchased separately. A condensate drain hose extension can be purchased separately
from Home Depot, 7/8 OD, 5/8 ID clear plastic tubing.
REFRIGERANT PIPE
CONNECTION
Installation of Outdoor Unit
•Anchor the outdoor unit with 4
anchor bolts tightly and horizontally
on a concrete pad or rigid mount.
Drain joint installation
•If a drain elbow is used, the unit should
be placed on a stand which is taller than
3cm.
•Fit the seal into the drain elbow, then
insert the drain joint into the base pan
hole of outdoor unit, rotate 90 to
securely assemble them. Connect the
drain joint with an extension drain hose
(Locally purchased), to prevent water
draining off the outdoor unit during the
heating mode. See fig. 14
Refrigerant pipe connection
1. Flaring work
The main cause for refrigerant leakage
is caused by a defect in the flaring work.
Perform correct flaring work
using the following procedure:
A: Cut the pipes and the cable.
1. Use the piping kit accessory or pipes
purchased locally.
2. Measure the distance between the indoor
and the outdoor unit.

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3. Cut the pipes a little longer than the
measured distance.
4. Cut the cable 1.5m longer than the pipe
length.
B: Burr removal
1. Completely remove all burrs from the cut
cross section of pipe/tube.
2. Put the end of the copper tube/pipe in a
downward direction as you remove burrs in
order to avoid dropping burrs into the tubing.
C: Putting the flare nuts on
Remove flare nuts attached to indoor and
outdoor unit, then put them on pipe/tube
having completed burr removal.(it’s not possible
to put them on after flaring work) Fig. 17
D: Flaring work
Firmly hold copper pipe in a die in the
dimension shown in the table below.
See Fig. 18
Tightening Connection
•Align the center of the pipes.
•Sufficiently tighten the flare nut with fingers,
and then tighten it with a spanner and torque
wrench as shown in Fig.19 & 20.
•Excessive torque can break the nuts
depending on installation conditions.

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Air purging
Air and moisture in the refrigerant system have undesirable effects as indicated below: Pressure in
the system rises.
Operating current rises.
Cooling or heating efficiency drops.
Moisture in the refrigerant circuit may freeze and block capillary tubing. Water may lead to corrosion
of parts in the refrigeration system.
Therefore, the indoor unit and tubing between the indoor and outdoor unit must be leak tested and
evacuated to remove any non-condensables and moisture from the system.
Air purging with vacuum pump
NOTE: Connective pipe length will affect the capacity and energy efficiency of the unit. The
nominal efficiency is tested basing on the pipe length of 7.5m (25ft).
The indoor unit and tubing between the indoor and outdoor unit must be leak tested and
evacuated to remove any non-condensables and moisture from the system.
Check that each tube (both liquid and gas side tubes) between the indoor and outdoor
units have been properly connected and all wiring for the test run has been completed.
See table below for pipe length, maximum elevation and additional Freon.
All units as shipped pre-charged with 1.3kg of R410A refrigerant.

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When Using the Vacuum Pump
1. Completely tighten the flare nuts, A, B, C,
and D. C onnect the manifold valve
charge hose (blue hose) to the charge port
of the low-pressure valve, using a R410A
adaptor, Fig. 59
2. Connect the charge hose (yellow hose) to
the vacuum pump.
3. Connect a digital vacuum gauge if
available.
4. Fully open the handle Lo of the manifold
valve.
5. Operate the vacuum pump to evacuate.
After starting evacuation, you should see
the compound gage read negative.
6. Evacuate for .5~1 hr. or when the digital
vacuum gage reads 500 microns or lower.
After the evacuation is complete, fully
close the handle Lo of the manifold valve
and stop the operation of the vacuum
pump.
7. Using a 5mm hex key, turn the stem of
both packed valves counterclockwise
until they are fully open.
8. Remove the charge hose from the Low
pressure service valve.
9. Securely tighten the caps of the packed
valves.
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RUNNING!TEST!!(To!be!run!after!electrical!work!has!been!completed)!
Perform"test"operation"after"completing"gas"leak"check"at"the"flare"nut"connections"and"electrical"safety"
check."
•Check"that"all"tubing"and"wiring"have"been"properly"connected."
•Check"that"the"gas"and"liquid"side"service"valves"are"fully"open."
1."Connect"the"power;"press"the"ON/OFF"button"on"the"remote"controller"to"turn"the"unit"on."
2."Use"the"MODE"button"to"select"COOL,"HEAT,"AUTO"and"FAN"to"check"if"all"the"functions"work"well."
3."When"the"ambient"temperature"is"too"low"(lower"than"17°C/62°F),"the"unit"cannot"be"controlled"by"
"the"remote"controller"to"run"in"cooling"mode,"manual"operation"must"be"used."
4."Manual"operation"is"used"only"when"the"remote"controller"is"disabled"or"maintenance"is"necessary."
"Press"the"manual"control"button"on"the"right"side"of"the"panel"frame"to"select"the"AUTO"or"COOL"
"mode."The"unit"will"operate"under"Forced"AUTO"or"COOL"mode."Run"test"for"30"minutes"minimum.""

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Electrical work
Electric safety regulations for the initial Installation
1. If there is are any safety issues with the power source, the technician should refuse to
install the air conditioner and explain the problem to the customer.
2. Power voltage should be in the range of 90%~110% of the rated voltage.
3. Use a surge protector and main power switch with 1.5 times capacity of Max. Current of
the unit. Ensure the air conditioner is well grounded.
4. The appliance shall be installed in accordance with NEC regulations. Do not operate your
air conditioner in a wet room such as a bathroom or laundry room.
5. Install an all-pole disconnection device which has at least 3mm clearances in all poles,
and has a leakage current that may not exceed 10mA. The residual current device (RCD)
must having a rated residual operating current not exceeding 30mA, and disconnection
must be incorporated.
6. For units with optional auxiliary electric heater, keep the unit at least 1 meter away from
the nearest combustible materials.
7. Reference the attached Electrical Connection Diagram located on the panel of the
indoor & outdoor unit to connect the wire.
8. All wiring must comply with local and national electrical codes and be installed by qualified
electricians.
9. An individual branch circuit and single receptacle used only for this air conditioner must be
available. See the following table for suggested wire sizes and fuse specifications:
!Suggest!Minimum!Wire!Size!
(AWG:!American Wire Gage):!
NOTE:
The wire size of power supply cord and the current of the fuse or breaker are
determined by the maximum current indicated on the nameplate which
located on the side panel of the unit. Please consult an electrician before
selecting the wire size, fuse or switch.

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Connecting the cable to the indoor unit
NOTE: Before performing any electrical
work, turn off the main power to the system.
1. The inside and outside connecting cable can
be connected without removing the front
grille.
2. The indoor power cord type is H05VV-F or
H05V2V2-F, the outdoor power cord shall be
properly sized by a qualified electrician and
incorporate a disconnect. See name plate on
outdoor unit for electrical specifications.
3. Lift the indoor unit front panel up, remove the
electrical box cover by removing the screw.
4. Ensure the color of wires of outdoor unit and
the terminal Numbers are the same to the
indoors respectively.
5. Wrap those cables not connected with
terminals with insulating tape, so that they will
not touch any electrical components. Secure
the cable onto the control board with the cord
clamp.
Connect the cable to the outdoor unit
1. Remove the cover control from the unit by
removing the 3 screws. See Fig.23.
2. Dismount caps on the conduit panel.
3. Temporarily mount the conduit tubes (not
included) on the conduit panel.
4. Properly connect both the power supply and
low voltage lines to the corresponding
terminals on the terminal block.
5. Ground the unit in accordance with local
codes.
6. Be sure to size each wire allowing several
inches longer than the required length for
wiring.
7. Use lock nuts to secure the conduit tubes.

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ELECTRICAL SECTION
Important Information
Because the use of this manual and the conditions or methods of installation,
operation, use and maintenance of photovoltaic (PV) product are beyond our
control, we do not take any responsibility and expressly disclaims liability for
loss, damage, or expense arising out of or in any way connected with such
installation, operation, use or maintenance. No responsibility is assumed by
us for any infringement of patents or other rights of third parties, which may
result by using the PV product. No license is granted by modification or
otherwise under any patent or patent rights. The information in this manual is
based on company s knowledge and experienceand is believed to be
reliable; but such information including product specification (without
limitations) and suggestions do not constitute a warranty, expressed or
implied. We reserve the right to change the manual, the PV product, the
specifications or product data sheets without prior notice.
The following section is a generic guide to installing Photovoltaic panels used with
the ACDC12b solar hybrid air conditioner. HotSpot Energy is a manufacturer of
high efficiency Mini split air conditioners and is not a manufacturer of PV panels,
cabling, or racking systems. Please use a licensed electrician or NABCEP certified
solar installer for PV panel selection, PV source conductor ampacity calculations,
or DC ground fault detection.