Ecoer 36K User manual

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Manufacturer reserves the right to change specifications or designs without notice.
ECOER INC.
NOTE:Appearance of unit may vary.
Installation must be performed in accordance
with the requirements of NEC and CEC by
authorized personnel only.
Installation Manual
SDi Decades Extreme
Air Handlers
3/5Ton Capacity
R-410A EEV Inside
Contents
1. Safety Precautions---------------------------------
2. Location and Dimensions------------------------
3. Applications-----------------------------------------
4. Electrical Wiring-----------------------------------
5. Airflow Performance------------------------------
6. Ductwork--------------------------------------------
7. Pipe Connections----------------------------------
8. Air Filter---------------------------------------------
9. Accessories-------------------------------------
2
6
8
16
30
31
32
33
34
All phases of this installation must comply with National, State and Local Codes.
IMPORTANT NOTE:
Read this manual carefully before installing or operating your new air conditioning unit.Make
sure to save this manual for future reference.
Read this manual:
Inside you’ll find many helpful hints on how to use and maintain your air conditioner properly.
Just alittle preventive care on your part can save you agreat deal of time and money over the life
of your air conditioner.These instructions may not cover every possible condition of use, so
common sense and attention to safety is required when installing, operating and maintaining
this product.

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1. Safety
The following safety guidelines are intended to prevent unforeseen risks or damage from unsafe or
incorrect operation of the appliance. Please check the packaging and appliance on arrival to make sure
everything is intact to ensure safe operation. If you find any damage, please contact the retailer or dealer.
Please note modifications or alterations to the appliance are not allowed for your safety. Unintended use
may cause hazards and loss of warranty claims.
Explanation of Symbols
CAUTION The signal word indicates a hazard with a low degree of risk which, if not avoided, may
result in minor or moderate injury.
WARNING The signal word indicates a hazard with a medium level of risk which, if not avoided,
may result in death or serious injury.
NOTICE The signal word indicates important information (e.g. damage to property), but not
danger.
Read these operating instructions carefully and attentively before using/commissioning the unit and
keep them in the immediate vicinity of the installation site or unit for later use!
WARNING
This appliance is not intended for use by persons(including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they have been given supervision
or instruction concerning use of the appliance by aperson responsible for their safety. Children
should be supervised to ensure that they do not play with the appliance.
WARNINGS FOR PRODUCT USE
•If an abnormal situation arises (like aburning smell), immediately turn off the unit and disconnect
the power. Call your dealer for instructions to avoid electric shock, fire or injury.
•Do not insert fingers, rods or other objects into the air inlet or outlet.This may cause injury, since
the fan may be rotating at high speeds.
•Do not use flammable sprays such as hair spray, lacquer or paint near the unit.This may cause fire
or combustion.
•Do not store gasoline or flammable substances near air conditioner.Emitted gas may collect around
the unit and cause explosion.
•Do not Install your air conditioner in awet room such as abathroom or laundry room.Too much
exposure to water can cause electrical components to short circuit.
•Do not expose your body directly to cool air for a prolonged period of time.
•Do not allow children to play with the air conditioner. Children must be supervised around the unit
at all times.
•If the air conditioner is used together with burners or other heating devices, thoroughly ventilate the
room to avoid oxygen deficiency and carbon monoxide build up.

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•In certain environments, such as kitchens, server rooms, etc., the use of specially designed air-
conditioning units is highly recommended.
•Improper installation, adjustment, alteration, service or maintenance can cause property damage,
personal injury or loss of life. Installation and service must be performed by alicensed professional
HVAC installer or equivalent, service agency, or the gas supplier.
ELECTRICAL WARNINGS
•The product must be properly grounded at the time of installation, or electrical shock may occur.
•For all electrical work, follow all local and national wiring standards, regulations, and the Installation
Manual.Connect cables tightly, and clamp them securely to prevent external forces from damaging
the terminal.Improper electrical connections can overheat and cause fire, and may also cause shock.
All electrical connections must be made according to the Electrical Connection Diagram located on
the panels of the indoor and outdoor units.
•All wiring must be properly arranged to ensure that the control board cover can close properly. If the
control board cover is not closed properly, it can lead to corrosion and cause the connection points
on the terminal to heat up, catch fire, or cause electrical shock.
•If connecting power to fixed wiring, an all-pole disconnection device which has at least 3mm
clearances in all poles, and have aleakage current that may exceed 10mA, the residual current
device(RCD) having arated residual operating current not exceeding 30mA, and disconnection must
be incorporated in the fixed wiring in accordance with the wiring rules.
WARNINGS FOR PRODUCT INSTALLATIONF
•Installation must be performed by an authorized dealer or specialist.Defective installation can cause
water leakage, electrical shock, or fire.
•Installation must be performed according to the installation instructions.Improper installation can
cause water leakage, electrical shock, or fire.
•(In North America, installation must be performed in accordance with the requirement of NEC and
CEC by authorized personnel only.)
•Contact an authorized service provider for repair or maintenance of this unit.This appliance shall be
installed in accordance with national wiring regulations.
•Only use the included accessories, parts, and specified parts for installation. Using non-standard
parts can cause water leakage, electrical shock, fire, and can cause the unit to fail.
•Install the unit in afirm location that can support the unit’s weight.If the chosen location cannot
support the unit’s weight, or the installation is not done properly, the unit may fall and cause serious
injury and damage.
•Install drainage piping according to the instructions in this manual.Improper drainage may cause
water damage to your home and property.
•For units that have an auxiliary electric heater, do not install the unit within 1meter (3 feet) of any
combustible materials.
•Do not install the unit in alocation that may be exposed to combustible gas leaks.If combustible gas
accumulates around the unit, it may cause fire.
•Do not turn on the power until all work has been completed.
•When moving or relocating the air conditioner, consult experienced service technicians for
disconnection and reinstallation of the unit.

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•How to install the appliance to its support, please read the information for details in "indoor unit
installation" and "outdoor unit installation" sections .
•Excessive Weight Hazard -Use two or more people when moving and installing the unit. Failure to do
so can result in back or other type of injury.
WARNINGS FOR CLEANING AND MAINTENANCE
•Turn of the device and disconnect the power before cleaning. Failure to do so can cause electrical
shock.
•Do not clean the air conditioner with excessive amounts of water.
•Do not clean the air conditioner with combustible cleaning agents.Combustible cleaning agents can
cause fire or deformation.
CAUTION
•Turn of the air conditioner and disconnect the power if you are not going to use it for along time.
•Make sure that water condensation can drain unhindered from the unit.
•Do not operate the air conditioner with wet hands.This may cause electric shock.
•Do not use device for any other purpose than its intended use.
•Do not climb onto or place objects on top of the outdoor unit.
•Do not allow the air conditioner to operate for long periods of time with doors or windows open, or
if the humidity is very high.
•As with any mechanical equipment, contact with sharp sheet metal edges can result in personal
injury.Take care while handling this equipment and wear gloves and protective clothing.
NOTICE
NOTE ABOUT FUSE SPECIFICATIONS
•Do not allow the air conditioner to operate for long periods of time with doors or windows open, or
if the humidity is very high.
•As with any mechanical equipment, contact with sharp sheet metal edges can result in personal
injury.Take care while handling this equipment and wear gloves and protective clothing.
NOTE ABOUT FLUORINATED GASSES (NOT APPLICABLE TO THE UNIT USING R290
REFRIGERANT)
•This air-conditioning unit contains fluorinated greenhouse gasses.For specific information on the
type of gas and the amount, please refer to the relevant label on the unit itself or the “Owner's
Manual - Product Fiche ”in the packaging of the outdoor unit.(European Union products only).
•Installation, service, maintenance and repair of this unit must be performed by acertified technician.
•Product uninstallation and recycling must be performed by acertified technician.
•When the unit is checked for leaks, proper record-keeping of all checks is strongly recommended.

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•The maximum functional total external static pressure can not exceed 0.80 in WC or 200 Pa. The
airflow reduces significantly beyond 0.80 in WC or 200Pa. System design should allow for the
increased resistance of filters as they become dirty.
•The allowed static pressure range of the air conditioner on site is 0-0.80 in-H2O (0-200 Pa). The data
below represents the static pressures at full required air flow used for AHRI testing.
MODEL 36K 60K
Test pressure 0.5 in H2O(125Pa) 0.5 in H2O(125Pa)

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2. Locations and Dimensions
Select the installation location of indoor units
DO NOT install the
indoor unit in a moist
environment. Excessive
moisture can corrode the
equipment, electrical
components, and cause
electrical shorts.
WARNING
DO NOT LOCATIONS:
Areas with oil
drilling or
fracking.
Coastal areas
with high salt
content in the air.
Areas where there may be
detergent or other corrosive
gases in the air, such as
bathrooms, or laundry rooms.
Areas that
store flammable
materials or gas.
Danger of explosion. Keep
flammable materials and vapors,
such as gasoline, away from
air handler.
Areas where the air
inlet and outlet may
be obstructed.
Areas with strong
electromagnetic
waves.
Securely install the indoor unit on a structure
that can support its weight. If the structure is
too weak, the unit may fall and cause personal
injury, unit and property damage, or death.
WARNING
MUST BE INSTALLED IN A LOCATION
THAT MEETS THE FOLLOWING REQUIREMENTS:
Place air handler so that heating
elements are at least 18 inches (46 cm) above
the floor for a garage installation. Failure to
follow these instructions can result in death,
explosion, or fire.
A stable position At least 18in(46cm)
2.1 Locations
CAUTION
Install the indoor and outdoor units, cables and wires at least 1m (3-1/5′)from televisions or radios to
prevent static or image distortion.Depending on the appliances, a 1m (3-1/5′)distance may not be
sufcient.
The Indoor unit must be electrically grounded per national and local electrical code.

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A
B
Model Dimensions (in./mm)
A B C D E
36K 49(1245) 21(533) 21-1/50(534) 19-5/16(490) 10-1/4(260)
60K 53(1346) 21(533) 24-1/2(622) 22-27/32(580) 10-1/4(260)
Indoor units parts installation size
Enough room for
installation and
maintenance.
Enough room for the
connecting pipe and
drainpipe.
The structure that the equipment is
suspended from must support the
weight of the indoor unit.
spaciousness
Must support the weight of
the indoor unit.
2.2 Dimensions

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3. Applications
3.1 Indoor unit installation
Preparation and precautions for indoor unit installation
Air outlet
Recommended Distances Between the Indoor Unit
The distance between the mounted indoor unit should
meet the specifications illlustrated in the following
diagram.
Horizontal installations
Minimum clearance of
25.4mm/1”all sides
Flexible
duct collar
The outlet side pipe length 1.5m/59”.
or
Vertical installations
Coil compartment
(Access panel
Removed)
Upflow
drain
pan
Horizontal drain pan
Fixing instructions: When installed vertically
(upward or downward), the lower end of the air
outlet needs to be connected to the L-shaped
metal air duct and fastened by screws.
WARNING
There must be an airtight seal between the bottom of the air handler and the return air plenum.Use
fiberglass sealing strips, foil duct tape, caulking, or equivalent sealing method between the plenum and
the air handler cabinet to ensure atight seal.Return air must not be drawn from aroom where this air
handler or any gas-fueled appliance (i.e., water heater), or carbon monoxide-producing device (i.e.,
wood fireplace) is installed.
WARNING
•Please apply sealant around the places
where the wires, refrigerant pipes and
condensate pipes enter the cabinet.
•Use duct tape or flexible sealant to seal
closed anyspace around the holes where
the drain lines exit the cabinet.Warm air
must not be allowed to enter throughany
gaps or holes in the cabinet.
NOTICE
Remove all accessories and packing in the air
outlet before installation.

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Select a solid and level site, keep enough space for proper installation and maintenance.
Adjust motor speed tap on indoor main control board (MCB) to select correct air flow according to
blower performance table.
Horizontal installationsVertical installations
NOTICE
NOTICE FOR DUCT CONNECTIONS：
More Requirements
•Air supply and return may be handled in one of several ways best suited to the installation (See table
for dimensions for duct inlet and outlet connections).The vast majority of problems encountered
with combination cooling systems can be linked to improperly designed or installed duct systems.
•It is therefore highly important to the success of an installation that the duct system be properly
designed and installed. Use flexible duct collars to minimize the transmission of vibration/noise into
the conditioned space.Where return air duct is short, or where sound could potentially to be a
problem, sound absorbing liner should be used inside the duct.
•Duct must be insulated where it runs through an unconditioned space during the cooling season.The
use of avapor barrier is recommended to prevent absorption of moisture from the surrounding air
into the insulation.
•The supply air duct connection should be properly sized by use of atransition to match unit opening.
•All ducts should be suspended using flexible hangers and never fastened directly to the structure.
This unit is not designed for non-ducted (free blow) applications.
•Duct work should be fabricated and installed in accordance with local and/or national codes.
It should be assembled
accordance to the
instructions.
It should be insulated
and use a Vapor
Barrier.
It should be Flexible
suspension mounted
and not fastened
It should be fabricated
and installed in
accordance with local
and/or national codes.

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Diferent installation directions
The units can be installed in a vertical (down and up)and Horizontal(right and left)
configuration.
Horizontalleft
Horizontalright
Upflow
Selection of installation direction
Airflow direction of diferent installation directions
Verticalup
At least
18in(46cm)
3.2 Indoor unit installation directions
Downflow
Horizontal
CAUTION
A field-fabricated secondary drain pan, with adrain pipe to the outside of the building, is required in all
installations over afinished living space or in any area that may be damaged by overflow from the main
drain pan.In some localities, local codes may require a secondary drain pan for any horizontal
installation.
NOTICE
For horizontal installation, asecondary drain
pan（not supplied）must be installed.
NOTICE
Vertical up and horizontal left installation does not need to change the direction of evaporator.

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3.3 Vertical up-flow and Horizontal left-flow
Vertical up-flow and horizontal left-flow configurations are the factory settings on all models.
3.4 Vertical down-flow and horizontal right-flow
Remove the bottom
cover first.
Then remove
the second
cover plate.
Step 1
Go straight to the regular
installation.
Step 1
Remove the filter door,
then take the filter of.
Step 2
Remove the upper cover
assembly.
Step 3
Remove evaporator
cover plate.
NOTICE
Vertical down-flow and horizontal right-flow configurations need to be field settings on all models.

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T2
T2A
T2B
T1
T2
T2A
T2B
T1
EEV
EEV
T2
T2A&T2B
T1
EEV
Step 4
Indication of the position of each
temperature sensor of the evaporator:
36Kmodel
60Kmodel
Step 5
Unplug temperature sensors T1, T2, T2A,
T2B and electronic expansion valve (EEV)
from the control board.
T1: Room temperature sensor
T2: Evaporator central sensor plug
T2A: Evaporator input sensor plug
T2B: Evaporator output sensor plug
Step 6
Remove T1, T2, T2A, T2B, EEV sensor wire
ties.
NOTICE
T2A and T2B are only available for some models.

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Cut the foam
gasket.
Remove knockouts as
shown in the figure.
Hook the wire into
the buckle and go
down from the wire
slot.
Replace foam gasket
over wires.
Step 8
Adjust the mounting parts position according to
the direction of equipment.
Step 7
Take out the evaporator and drain pan and rotate
180°(when your equipment need to be vertical
downed configuration).
Step 9
Reinstall the evaporator and drain pan.
Step10
Reinstall T1, T2, T2A, T2B sensor plugs and
electronic expansion valve (EEV) and tie up the
sensor wires.
NOTICE
The wire body needs to pass through the wire
groove from the drain pan and be stuck on the
hook of the drain pan.

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cable ties
Step 13
Reinstall evaporator cover plate.
cable ties
Step 12
Use cable ties to fix the room temperature
sensor as shown in the figure.
Step 14
Connect the wire according to the wiring diagram.
Step 15
Reassenble the upper cover and Reinstall the
filter, filter cover plate.
CAUTION
CAUTION FOR ALL PIPES INSTALLATION
•Insulate all piping to prevent condensation, which could lead to water damage.
•The drainpipe is used to drain water away from the unit.If the drainpipe is bent or installed
incorrectly, water may leak and cause awater-level switch malfunction.
•In HEAT mode, the outdoor unit will discharge water.Ensure that the drain hose is placed in an
appropriate area to avoid water damage and icy conditions on walkways.
•DO NOT pull the drainpipe forcefully.This could disconnect it.
NOTICE
If installed above afinished living space, asecondary drain pan (as required by many building codes),
must be installed under the entire unit and its condensate drain line must be routed to alocation such
that the user will see the condensate discharge.

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3.5 Air-handler refrigerant piping connection
Correct Refrigerant piping Connecting installation methods
Plan 1Plan 2
Foam Tape
Braze connection
Threaded connection
Screw joint
Use the conversion adapter
from attachment
•Thread this pipeline through the wall and
connect it to the outdoor unit.
•Insulate all the piping, including the valves of
the outdoor unit.
•Open the stop valves of the outdoor unit to
start the flow of the refrigerant between the
indoor and outdoor unit.
CAUTION
Check to make sure there is no refrigerant leak
after completing the installation work.
If there is arefrigerant leak, ventilate the area
immediately and evacuate the system (refer to
the Air Evacuation section of this manual).
After the unit is installed,
wrap the piping and brass
fitting with foam tape.

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4. Electrical Wiring
•All wiring must comply with local and national
electrical codes, regulations and must be installed by
a licensed electrician.
•All electrical connections must be made according to
the Electrical Connection Diagramlocated on the
panels of the indoor and outdoor units.
•If there is a serious safety issue with the power
supply, stop work immediately. Explain your
reasoning to the client, and refuse to install the unit
until the safety issue is properly resolved. Power
voltage should be within 90-110% of rated voltage.
Insufcient power supply can cause malfunction,
electrical shock, or fire.
•Installation of an external surge suppressor at the
outdoor disconnect is recommended.
•If connecting power to fixed wiring, a switch or
circult breaker that disconnects all poles and has a
contact separation of at least 1/8in (3mm) must be
incorporated in the fixed wiring. The qualified
technician must use an approved circuit breaker or
switch.
•Make sure to properly ground the air conditioner.
Every wire must be firmly connected. Loose wiring
can cause the terminal to overheat, resulting in
product malfunction and possible fire.
•Only connect the unit to an individual branch circuit.
Do not connect another appliance to that Circuit.
•Do not let wires touch or rest against refrigerant
tubing, the compressor, or any moving parts within
the unit.
•To avoid getting an electric shock, never touch the
electrical components soon after the power supply
has been turned of. After turning of the power,
always wait 10 minutes or more before you touch
the electrical components.
•Make sure that you do not cross your electrical
wiring with your signal wiring. This may cause
distortion, interference or possibly damage to
circuit boards.
•No other equipment should be connected to the
same power circuit.
•Connect the outdoor wires before connecting the
indoor wires.
Wiring overview
WARNING
BEFORE PERFORMING ANY ELECTRICAL WORK, READ THESE WARNINGS.
WARNING
BEFORE PERFORMING ANY ELECTRICAL OR
WIRING WORK, TURN OFF THE MAIN POWER
TO THE SYSTEM.
NOTICE
The diagrams are for explanation purpose only.Your machine may be slightly different.The actual
diagram shall prevail.

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4.1 Power Wiring
Step 1: Prepare the cable for connection.
1.Using wire strippers, strip the insulating jacket
from both ends of the signal cable to reveal about
15cm (5.9”) of the wire.
2.Strip the insulation from the ends of the wires.
Step 2: Open the front panel of the indoor
unit.
Using a screwdriver,remove the cover of the electric
control box on your indoor unit.
Step 3: Connect the wires to the terminals.
1. Thread the power cable and the signal cable
through the wire outlet
2. Match the wire colors/labels with the labels on
the terminal block. Firmly screw the wires of
each wire to its corresponding terminal. Refer
to the Serial Number and Wiring Diagram
located on the cover of the electric control box.
3. Clamp down the cable with the cable
clamp. The cable must not be loose or
pull on the u-lugs.
4. Reattach the electric box cover.
5. Clamp down the cable with the cable
clamp. The cable must not be loose or
pull on the u-lugs.
6. Reattach the electric box cover
Wiringdiagram
Class2 wire
Power
wire
TO POWER SOURCE OR
OUTDOOR
CAUTION
•While connecting the wires, please strictly follow the wiring diagram.
•The refrigerant circuit can become very hot.Keep the interconnection cable away from the copper
tube.
WARNING
ISOLATE THE POWER SUPPLY LEADS AND
COMMUNICATION LEADS BY THE STRAIN
RELIF AND KEEP POWER SUPPLY LEADS
AWAY FROM COMMUNICATION LEADS.
CAUTION
•While connecting the wires, please strictly
follow the wiring diagram.
•The refrigerant circuit can become very
hot.Keep the interconnection cable away
from the copper tube.

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Wiring Diagram

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4.2 Control Wiring
Connection method A:
Refer to the wiring method of internal and external machine communication and wired controller as
follows:
Connection method B:
To use a 24V thermostat, you need to refer to the following wiring:
WARNING
Please refer to the wiring nameplate for the wiring method.Do not connect the power cord to the
communication line, as this may damage the system.

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Connection method C:
When using a 24v thermostat, please refer to the non-communicating wiring diagrams, the following
wiring diagram are suitable for the AHU and ODU with 24v thermostat:
•Wiring for 4H and 2C thermostat•Wiring for 3H and 2C thermostat
•Wiring for 3H and 1C thermostat •Wiring for 2H and 2C thermostat
•Wiring for 3H and 2C thermostat •Wiring for 2H and 1C thermostat
•Wiring for 1H and 1C thermostat •Wiring for 1H and 1C thermostat
S4-2 Default on, W1 and W2
shorted for single stage Aux heat
operation. Turn off to separate stages.
S4-1 Default on，DH function
off. Turn switch off to activate DH
function. S4-2 Default on, W1 and W2 shorted
for single stage Aux heat
operation. Turn off to separate
stages.
S4-1 Default on，DH function
off. Turn switch off to activate DH
function.
S4-2 Default on, W1 and W2 shorted for
single stage Aux heat operation. Turn off
to separate stages
S4-1 Default on，DH function
off. Turn switch off to activate DH
function.
S4-2 Default on, W1 and W2 shorted
for single stage Aux heat
operation. Turn off to separate
stages.
S4-1 Default on，DH function
off. Turn switch off to activate DH
function.
S4-2 Default on, W1 and W2 shorted
for single stage Aux heat
operation. Turn off to separate
stages.