Ecoer 2436 User manual

1/31

ESI Outdoor Unit Installation Instruction

08.2018

www.ecoer.com

Manufacturer reserves the right to change specifications or designs without notice.

NOTE: Appearance of unit may vary.

The IoT gateway does not ship with outdoor unit.

Visit www.ecoer.com to get IoT installation guide.

Installation must be performed in accordance with

the requirements of NEC and CEC by authorized

personnel only.

Installation Instructions

Inverter Split Heat Pump

Up to 20 SEER

2-3-4-5Ton Capacity

R410A

Contents

1. Safety--------------------------------------------------

2. Unit Location Considerations--------------------

3. Position the Unit--------------------------------------

4. Refrigerant Line Considerations-----------------

5. Refrigerant Line Routing--------------------------

6. Refrigerant Line Brazing---------------------------

7. System Leak Check---------------------------------

8. Evacuation--------------------------------------------

9. Service Valves---------------------------------------

10. Electrical - Low Voltage----------------------------

11. Electrical - High Voltage---------------------------

12. Start-up------------------------------------------------

13. System Charge Adjustment----------------------

14. System Operation----------------------------------

15. Troubleshooting-----------------------------------------

16. Wiring Diagram----------------------------------------

All phases of this installation must comply with National, State and Local Codes.

IMPORTANT

This document is customer’s property and is to remain with this unit. Please return it to customer

with service information upon completion of work.

These instructions do not cover all variations in systems or provide for every possible contingency

to be met in connection with the installation. Should further information be desired or should

particular problems arise which are not covered sufficiently for the purchaser’s purposes, the

matter should be referred to your installing dealer or local distributor.

2/31

ESI Outdoor Unit Installation Instruction

08.2018

www.ecoer.com

Manufacturer reserves the right to change specifications or designs without notice.

1. Safety

WARNING

HAZARDOUS VOLTAGE

Failure to follow this warning could result in property damage, severe personal injury, or death.

Disconnect all electric power, including remote disconnections before servicing. Follow proper lockout/

tagout procedures to ensure the power cannot be inadvertently energized.

REFRIGERANT OIL

Any attempt to repair central air conditioner and heat pump products may result in property damage,

severe personal injury, or death.

These units use R-410A refrigerant which operates at 50~70% higher pressures than R-22. Use only R-

410A approved service equipment. Refrigerant cylinders are painted a “Rose” color to indicate the type

of refrigerant and may contain a “dip” tube to allow for charging of liquid refrigerant into the system. All

R-410A systems with variable speed compressors use a PVE oil that readily absorbs moisture from the

atmosphere. To limit this ‘hygroscopic“ action, the system should remain sealed whenever possible. If a

system has been open to the atmosphere for more than 4 hours, the compressor oil must be replaced.

Never break a vacuum with air and always change the driers when opening the system for component

replacement.

SERVICE VALVES

Failure to follow this warning will result in abrupt release of system charge and may result in personal

injury and/or property damage.

Extreme caution should be exercised when opening the liquid service valve. Turn valve stem

counterclockwise only until the stem contacts the rolled edge. No torque is required.

BRAZING REQUIRED

Failure to inspect refrigerant lines or use proper service tools may result in equipment damage or

personal injury. If using existing refrigerant lines, make sure that all joints are brazed, not soldered.

HIGH CURRENT LEAKAGE

Failure to follow this warning could result in property damage, severe personal injury, or death.

Grounding is essential before connecting electrical supply.

CAUTION may lead to injury or structural damage under some conditions.

WARNING may cause personal death or serious injury.

Read the following safety instructions before installing the unit or doing servicing work.

3/31

ESI Outdoor Unit Installation Instruction

08.2018

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Manufacturer reserves the right to change specifications or designs without notice.

CAUTION

AUTHORIZED

PERSONNEL ONLY

This information is intended for use by individuals possessing adequate backgrounds of electrical and

mechanical experience. Any attempt to repair central air conditioner or heat pump products may result

in personal injury and/or property damage.

INDOOR UNIT REQUIRMENT

The indoor units must be matched with R-410A TXV.

The model of TXV can be changed according to the system capacity.

HOT SURFACE

May cause minor to severe burning.

Failure to follow this caution could result in property damage or personal injury.

Do not touch top of compressor.

GROUNDING REQUIRED

Failure to inspect or use proper service tools may result in equipment damage or personal injury.

Reconnect all grounding devices. All parts of this product that are capable of conducting electrical

current are grounded. If grounding wires, screws, straps, clips, nuts, or washers used to complete a path

to ground are removed for service, it must be returned to their original position and properly fastened.

CONTAINS REFRIGERANT

Failure to follow proper procedures can result in personal illness or injury or severe equipment damage.

System contains oil and refrigerant under high pressure. Recover refrigerant to relieve pressure before

opening the system.

4/31

ESI Outdoor Unit Installation Instruction

08.2018

www.ecoer.com

Manufacturer reserves the right to change specifications or designs without notice.

Unit Dimensions

Model H xW xL(Inches)

2436 24-15/16 x29-1/8 x29-1/8

4860 33-3/16 x29-1/8 x29-1/8

2.2 Unit Dimensions

2. Unit Location Considerations

Table 2-1 Outdoor unit dimensions

Units are packaged for shipment to avoid damage during

normal transit and handling. It is the receiving party’s

responsibility to inspect the equipment upon arrival. Any

obvious damage to the carton box should be reported on

the bill of lading and a claim should be filed with the

transportation company, and the factory should be noticed.

All units should be stored in the factory shipping carton

with internal packaging in a dry place until installation.

Carefully remove the packaging and inspect for hidden

damage. Any hidden damage should be recorded and the

factory should be notified. The gauge port can be used to

check the refrigerant charge has been retained during

shipment.

2.1 Inspect Units

Figure 2-1 Check damage

Figure 2-2 External dimensions

Two models with the same chassis suit for most of

residential air conditioning applications, only have height

difference for external dimensions.

5/31

ESI Outdoor Unit Installation Instruction

08.2018

www.ecoer.com

Manufacturer reserves the right to change specifications or designs without notice.

2.3 Location Restrictions

Cold Climate Considerations

Precautions must be taken for units being installed in

areas where snow accumulation and prolonged

below-freezing temperatures occur.

Depending on local weather, units should be elevated

at least 3~12 inches above the pad or rooftop. This

additional height will allow drainage of snow and ice

melted during defrost cycle to flow out smoothly prior

to its refreezing.

A snow drift barrier should be installed around the

unit to prevent a build-up of snow on the unit sides.

Figure 2-3 Clearance requirement

Figure 2-4 Unit location choose

Figure 2-5 Consideration to prevent refreezing

Min. 20” to

shrubbery

Min. 20”

to wall

Access panel

Min. 20”

3~12” elevation

Pad

Snow legs

Min. 20” to

shrubbery

Min. 24”

unrestricted

Min. 60”unrestricted

Avoid to install

near bedrooms

Access panel

Position unit so water, snow, or ice from roof

or overhang cannot fall directly on unit.

Installation Clearance Requirement

Ensure the top discharge area is unrestricted for at

least 60 inches above the unit.

Do not locate outdoor unit near bedrooms since

normal operational sounds may be annoying.

Position unit to allow adequate space for

unobstructed airflow, wiring, refrigerant lines, and

serviceability.

Allow a minimum of 20 in. clearance on one side of

access panel to a wall and a minimum of 24 in. on

the adjacent side of access panel. Maintain a

distance of 24 in. between units.

6/31

ESI Outdoor Unit Installation Instruction

08.2018

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Manufacturer reserves the right to change specifications or designs without notice.

3. Position the Unit

When mounting the unit on a roof, be sure the roof will

support the unit’s weight obtained from nameplate.

Properly selected isolation is recommended to prevent

sound or vibration transmission to the building structure.

When installing the unit on a support pad, such as a

concrete slab, consider the following:

•The pad must be 1~2” larger than the unit on all sides.

•The pad must be separated from any structure.

•The pad must be level.

•The pad must be high enough above grade to allow for

drainage.

•The pad location must comply with National, State and

Local codes.

IMPORTANT NOTE:

These instructions are intended to provide a method to tie-down unit to cement slab as a securing

procedure for high wind areas. Check local codes for tie-down methods and protocols.

Figure 3-1 Position the unit on pad

Figure 3-2 Fasten the outdoor unit

#7 ×3/8” self tapping screws

(Do not exceed 3/8” length.)

DETAIL A

Brackets:

2" width, 1/16" thickness,

height as required.

Available from distributor

or in market store.

1/4” × 1-1/2” hex washer head concrete screws

(3/16” pilot hole needed. Pilot hole should be1/4” deeper

than the fastener embedment.)

Refer to the unit dimensions.

DETAIL A

7/31

ESI Outdoor Unit Installation Instruction

08.2018

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Manufacturer reserves the right to change specifications or designs without notice.

4. Refrigerant Line Considerations

Use only the line sizes indicated in Table 4-1 and determine required line length.

4.1 Refrigerant Line and Service Valve Connection Sizes

4.2 Refrigerant Line Limits

Model Suction line Liquid line Suction line connection Liquid line connection

2436 3/4 3/8 3/4 3/8

4860 7/8 7/8

Figure 4-1 Line length limit

Figure 4-2 Elevation difference limit

• Maximum line length = 100 feet.

Max.100ft

• Maximum elevation difference = 50 feet.

Max.50ft

Table 4-1 Line sizes

8/31

ESI Outdoor Unit Installation Instruction

08.2018

www.ecoer.com

Manufacturer reserves the right to change specifications or designs without notice.

For retrofit applications where the existing

refrigerant lines will be used, the following

precautions should be taken:

•Ensure that the refrigerant lines are the correct

size according to Table 4-1.

•Ensure that the refrigerant lines are free of leaks,

acid, and oil.

4.4 Reuse Existing Refrigerant Lines

CAUTION

If using existing refrigerant lines, make sure that all

joints are brazed, not soldered.

IMPORTANT:

The manufacturer recommends installing only approved matched indoor and outdoor systems. All of

the manufacturer’s split systems are AHRI rated with TXV indoor units. Some of the benefits of installing

approved matched indoor and outdoor split systems are maximum efficiency, optimum performance

and the best overall system reliability.

Figure 4-4 Use existing refrigerant lines

The suction line must always be insulated.

DO NOT allow the suction line and liquid line to

come in direct (metal to metal) contact.

4.3 Refrigerant Line Insulation

Figure 4-3 Line insulation

liquid line

suction line

Insulation

9/31

ESI Outdoor Unit Installation Instruction

08.2018

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Manufacturer reserves the right to change specifications or designs without notice.

8 Feet Maximum

Side View 8 Feet Maximum

Wall

Isolator

Line Set

Secure suction line using isolators every 8 ft. Secure liquid line directly to insulated suction line

using tape, wire, or other appropriate method every 8 ft.

Figure 5-2 Isolation in wall spaces

Sealant

Suction line

Insulation

Wall

Figure 5-3 Isolation through wall

Ductwork

Isolator

Line Set

Figure 5-4 DO NOT hang line sets from ductwork

5. Refrigerant Line Routing

Comply with National, State, and Local Codes when isolating line sets from joists, rafters, walls, or

other structural elements. Take precautions to prevent noise within the building structure due to

vibration transmission from the refrigerant lines. For Example:

•Use isolation type hangers when the refrigerant lines have to be fastened to floor joists or other framing.

•Isolation hangers should also be used when refrigerant lines traverse stud spaces or enclosed ceilings.

•Where the refrigerant lines pass through a wall or sill, it should be insulated and isolated.

•Isolate the lines from all ductwork.

•Minimize the number of 90ºturns.

Figure 5-1 Isolation from Joist/Rafter

8 Feet Maximum

Side View 8 Feet Maximum

Joist/Rafter

Isolator

Line Set

Secure suction line from joists using isolators every 8 ft. Secure liquid line directly to insulated

suction line using tape, wire, or other appropriate method every 8 ft.

10/31

ESI Outdoor Unit Installation Instruction

08.2018

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Manufacturer reserves the right to change specifications or designs without notice.

6. Refrigerant Line Brazing

Refer to below figures marked with digital number for line brazing procedures. Every figure is

corresponding to the following illustration.

①Remove caps or plugs . Use a tool to deburr the line ends. Clean both internal and external surfaces of the

tubing using an emery cloth.

②Remove the pressure tap cap from both service valves.

③Purge the refrigerant lines and indoor coil with dry nitrogen from gas service valve.

④Wrap a wet rag around the valve body to avoid heat damage and continue the dry nitrogen purge. Braze

the refrigerant lines to the service valves. Install a bidirectional filter drier in liquid side to protect the heat

pump system. Do not remove the wet rag until all brazing is completed.

⑤Put the pressure tap caps back after the service valves cooled down.

①②

A thimble

is required

③

⑤

Figure 6-1 Refrigerant line brazing work

Field supplied

3~4" from valve

④

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