Ecoer 2436 Installation Manual

Inverter ducted split 2-5 ton r-410a heat pump

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ESi Decades ODU IM

NOTE: Appearance of unit may vary.

I n s t a l l a t i o n m u s t b e p e r f o r m e d i n

accordance with the requirements of NEC

and CEC by authorized personnel only.

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

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.

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

1 of 32

Installation Manual

Inverter Ducted Split

2-5 Ton R-410A Heat Pump

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--------------------------

ECOER INC.

-----------

June. 2023

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Page 1: Table Of Contents
ESi Decades ODU IM 1 of 32 ECOER INC. Installation Manual Inverter Ducted Split 2-5 Ton R-410A Heat Pump Contents 1. Safety------------------------------------------------- 2. Unit Location Considerations------------------- 3. Position the Unit----------------------------------- 4. Refrigerant Line Considerations--------------- 5. Refrigerant Line Routing------------------------ 6. Refrigerant Line Brazing------------------------- 7.
Page 2: Safety
ESi Decades ODU IM 2 of 32 ECOER INC. 1. Safety Read the following safety instructions before installing the unit or doing servicing work. WARNING may cause personal death or serious injury. CAUTION may lead to injury or structural damage under some conditions.
Page 3 ESi Decades ODU IM 3 of 32 ECOER INC. CAUTION This information is intended for use by individuals possessing adequate backgrounds of electrical and AUTHORIZED PERSONNEL ONLY mechanical experience. Any attempt to repair central air conditioner or heat pump products may result in personal injury and/or property damage.
Page 4: Unit Location Considerations
ESi Decades ODU IM 4 of 32 ECOER INC. 2. Unit Location Considerations 2.1 Inspect Units 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.
Page 5 ESi Decades ODU IM 5 of 32 ECOER INC. Installation Clearance Requirement Ensure the top discharge area is unrestricted for at Avoid to install near bedrooms least 60 inches above the unit. Do not locate condensing unit near bedrooms because normal operational sounds may be Min.
Page 6 ESi Decades ODU IM 6 of 32 ECOER INC. Cold Climate Considerations Precautions must be taken for units being installed in areas where snow accumulation and prolonged below-freezing temperatures occur. E l e v a t e u n i t p e r l o c a l c l i m a t e a n d c o d e requirements.
Page 7: Position The Unit
ESi Decades ODU IM 7 of 32 ECOER INC. 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.
Page 8: Refrigerant Line Considerations
ESi Decades ODU IM 8 of 32 ECOER INC. 4. Refrigerant Line Considerations 4.1 Refrigerant Line Limits Use only the line sizes indicated in below table and determine required line length. If the suction line sets are greater than 50 feet, do not use a larger suction line than recommended.
Page 9 ESi Decades ODU IM 9 of 32 ECOER INC. 4.2 Refrigerant Line Insulation The suction line must always be insulated. Liquid line Suction DO NOT allow the suction line and liquid line to come in line Insulation direct (metal to metal) contact.
Page 10: Refrigerant Line Routing
ESi Decades ODU IM 10 of 32 ECOER INC. 5. Refrigerant Line Routing other structural elements. Take precautions to prevent noise within the building structure due to Comply with National, State, and Local Codes when isolating line sets from joists, rafters, walls, or vibration transmission from the refrigerant lines.
Page 11: Refrigerant Line Brazing
ESi Decades ODU IM 11 of 32 ECOER INC. 6. Refrigerant Line Brazing Refer to below figures marked with digital number for line brazing procedures. Every figure is corresponding to the following illustrations. 1. Remove caps or plugs. Use a tool to deburr the line ends. Clean both internal and external surfaces of the tubing using an emery cloth.
Page 12: System Leak Check
ESi Decades ODU IM 12 of 32 ECOER INC. 7. System Leak Check 1. Pressurize the brazed refrigerant lines and indoor coil to at least 450 PSIG using dry nitrogen. Leak check is required for the brazed line connections. 2. Wait for 10 minutes without a drop in pressure.
Page 13: Service Valves
ESi Decades ODU IM 13 of 32 ECOER INC. 9. Service Valves Leak check and evacuation must be completed before opening the service valves. The gas service valve must be opened BEFORE opening the Liquid Service Valve! 1. Remove service valve cap.
Page 14 ESi Decades ODU IM 14 of 32 ECOER INC. 10.2 Low voltage hook-up diagrams Dual-heating To activate indoor auxiliary heat. Thermostat wiring harness Part Number: 230904254 C Y O W E-heater or Dual fuel To activate indoor auxiliary heat. Outdoor W terminal outputs 24Vac once system needs it.
Page 15: Electrical - High Voltage
ESi Decades ODU IM 15 of 32 ECOER INC. 11. Electrical – High Voltage 11.1 High voltage power supply WARNING During installation, testing, servicing, and trouble shooting of this product, it may be necessary to work with live electrical components.
Page 16: Start-Up
ESi Decades ODU IM 16 of 32 ECOER INC. 12. Start-up Prior to start-up the unit, connect IoT device if equipped with. Refer to IoT IM and Registration Guide via ESS Pro App. At the same time, ensure chapters 5 to 11 have been completed.
Page 17 25 ft (adding 0.6 oz/ft on 3/8 liquid line respectively). Charging example: If the air handler is 3T with the 2436 unit, and the liquid line length is 40ft, the charging is below, 1. The air handler charging = oz(A) 2.
Page 18 When the LED displays “--” for more than 20 minutes, stop charging and adjust the TXV opening to ensure required compressor suction superheat The refrigerant coefficient is used to evaluate the refrigerant level in the ecoer system. Refrigerant coefficient Undercharged...
Page 19 ECOER INC. TIPS： How to adjust indoor TXV opening To keep the best performance and reliability of Ecoer Smart Inverter (ESI) system, be sure liquid line sub- cooling (SC) and compressor suction superheat (SSH) meet the requirements. Target SC and SSH 6~18℉...
Page 20 ESi Decades ODU IM 20 of 32 ECOER INC. 13.3 Sub-cooling charge Refer to the following steps to charge refrigerant by sub-cooling degree in cooling mode. Table 13-2 Superheat calculation on gas service valve STEP1 CALCULATE SUPERHEAT ON SUCTION VALVE Final Superheat (ºF)
Page 21 ESi Decades ODU IM 21 of 32 ECOER INC. STEP3 ADJUST REFRIGERANT LEVEL TO ATTAIN PROPER GAUGE PRESSURE Add refrigerant if the sub-cooling is lower than the chart value. 1. Connect gauge hoses to refrigerant tank and liquid/gas service valves (Use gauge port instead of gas service valve for charge in heating).
Page 22: System Operation
ESi Decades ODU IM 22 of 32 ECOER INC. 14. System Operation 14.1 Default display LED on main control board can display the operating status of outdoor unit (ODU). 7 segment display SEG1 SEG2 SEG3 Normally blank, but it displays codes “0 to 9” accordingly if there is damaged sensor and command response.
Page 23 ESi Decades ODU IM 23 of 32 ECOER INC. Mode list (SEG3 Display) SEG1 SEG2 SEG3 Stop or standby SEG1 SEG2 SEG3 Ready to start-up SEG1 SEG2 SEG3 Cooling SEG1 SEG2 SEG3 Heating SEG1 SEG2 SEG3 Oil return SEG1 SEG2...
Page 24 ESi Decades ODU IM 24 of 32 ECOER INC. 14.2 Field setting Outdoor condensing units’ functions can be applied by dipping switch and pressing buttons. 14.2.1 Setting by dip switches SW1 Dip switch Description Disable NO ． Setting item Status...
Page 25 ESi Decades ODU IM 25 of 32 ECOER INC. Default mode (Spot check) System states can be showed on the 7 segments display (LED) of outdoor unit. Press BS3 button to get the code number and corresponding information with an interval of one second.
Page 26 ESi Decades ODU IM 26 of 32 ECOER INC. Setting mode Press and hold BS1 button for five (5) seconds to enter the parameter setting interface. The latest setting will be taken as the final one. 0 (factory) Normal (Energy Saving) mode...
Page 27 ESi Decades ODU IM 27 of 32 ECOER INC. 14.3 Major components function Liquid Service Valve Heat Exchanger Gas Service Valve (ST1) Gauge Port Fig 14-1 Refrigerant Circuit Adjusts refrigerant flow rate by changing the speed (RPS) based on Name...
Page 28 ESi Decades ODU IM 28 of 32 ECOER INC. 14.4 Control logic description 14.4.1 Operation mode SW1_3=OFF (factory), ESI system uses Y/O/C signal to operate heat pump function. SW1_3=ON has been set, ESI system uses Y/C signal to run cooling only.
Page 29: Troubleshooting
ESi Decades ODU IM 29 of 32 ECOER INC. 15. Troubleshooting If the system does not operate properly besides any malfunctions. Check the system based on the following procedures. Symptoms Possible causes Solutions System does not • No 24 VAC for Y signal from •...
Page 30 ECOER INC. Error codes List for Condensing Unit Error codes can be inquired by BS3 button, and seen on Ecoer Smart Service Pro App. Sign in App >Files >Service, refer to ESI (Ultra) service manual for troubleshooting details. High pressure protection...
Page 31: Wiring Diagram
ESi Decades ODU IM 31 of 32 ECOER INC. 16. Wiring Diagram 2436 Model 4860 Model Manufacturer reserves the right to change specifications or designs without notice. June. 2023...
Page 32 ESi Decades ODU IM 32 of 32 ECOER INC. ©2021 ECOER INC. 43671 Trade Center Place, Suite 100 Dulles, VA 20166 Tel: 703-348-2538 www.ecoer.com Manufacturer reserves the right to change specifications or designs without notice. June. 2023...

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Ecoer 2436 Installation Manual

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