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Ecoer ERDA19H-60ABA Installation Manual

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RTi 2 series 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.
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing
of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge
and training. Improperly installed, adjusted or altered equipment by an unqualified person could result in
death or serious injury. When working on the equipment, observe all pre-cautions in the literature and on the
tags, stickers, and labels that are attached to the equipment.
Manufacturer reserves the right to change specifications or designs without notice.
1 of 47
Installation Manual
Inverter Ducted Packaged
5 Ton R-454B Heat Pump
Contents
1. Safety-------------------------------------------------
2. Unit Dimensions-------------------------------
3. Installation-------------------------------------
4. Electrical Requirement------------------------
5. Airflow Performance-------------------------
7. Start-up-----------------------------------------
8. System Charge Adjustment------------------
9. System Operation-----------------------------
10. Troubleshooting-------------------------------
11. Wiring Diagram-------------------------------
ECOER INC.
2
12
15
25
28
29
31
32
37
45
47
May. 2025

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  • Page 1: Table Of Contents

    RTi 2 series IM 1 of 47 ECOER INC. Installation Manual Inverter Ducted Packaged 5 Ton R-454B Heat Pump Contents 1. Safety------------------------------------------------- 2. Unit Dimensions------------------------------- 3. Installation------------------------------------- 4. Electrical Requirement------------------------ 5. Airflow Performance------------------------- 6. Indoor Blower control function------------ 7. Start-up----------------------------------------- NOTE: Appearance of unit may vary.

  • Page 2: Safety

    RTi 2 series IM 2 of 47 ECOER INC. 1. Safety Read the following safety instructions before installing the unit or doing servicing work. NOTE: R454B refrigerant is a blend and should only be added to the system in liquid state.
  • Page 3 RTi 2 series IM 3 of 47 ECOER INC. 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.
  • Page 4 RTi 2 series IM 4 of 47 ECOER INC. CAUTION INSTALLATION Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, which authorises their competence to handle refrigerants safely in accordance with an industry recognised assessment specification.
  • Page 5 RTi 2 series IM 5 of 47 ECOER INC. CAUTION 8. After completion of field piping for split systems, the field pipework shall be pressure tested with an inert gas and then vacuum tested prior to refrigerant charging, according to the following requirements.
  • Page 6 RTi 2 series IM 6 of 47 ECOER INC. CAUTION CHECKS TO THE REFRIGERATION EQUIPMENT Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times the manufacturer’s maintenance and service guidelines shall be followed. If in doubt, consult the manufacturer’s technical department for assistance.
  • Page 7 RTi 2 series IM 7 of 47 ECOER INC. CAUTION detection fluids are also suitable for use with most refrigerants but the use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe_x0002_work.
  • Page 8 RTi 2 series IM 8 of 47 ECOER INC. CAUTION • A follow up leak test shall be carried out prior to leaving the site. DECOMMISSIONING Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail.
  • Page 9 RTi 2 series IM 9 of 47 ECOER INC. CAUTION The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of the flammable refrigerant. If in doubt, the manufacturer should be consulted.
  • Page 10 RTi 2 series IM 10 of 47 ECOER INC. CAUTION (e.g. an operating gas appliance) or other POTENTIAL IGNITION SOURCES (for e.g. an operating electric heater hot surfaces). A flame-producing device may be installed in the same space if the device is provided with an effective flame arrest.
  • Page 11 RTi 2 series IM 11 of 47 ECOER INC. CAUTION The maximum number of pieces of equipment permitted to be stored together will be determined by local regulations. AUTHORIZED PERSONNEL ONLY This information is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience.

  • Page 12: Unit Dimensions

    RTi 2 series IM 12 of 47 ECOER INC. 2 Unit Dimensions 2.1 Unit Dimensions Figure 2.1 External dimensions Dimensions (Inch [mm]) 　 Model 19-11/16 15-1/2 47-11/64 44-7/8 50-19/32 51-19/32 ERDA19H-60ABA [500] [394] [1198] [1140] [1285] [1310] Table 2.1 Unit Dimensions...

  • Page 13: Dimensions - Back And Bottom

    RTi 2 series IM 13 of 47 ECOER INC. 2.2 Dimensions - Back and Bottom Figure 2.2 Back Figure 2.3 Bottom Dimensions (Inch [mm]) 　 Model 15-27/32 13-13/16 16-3/32 14-3/32 ERDA19H-60ABA [402] [352] [409] [358] Table 2.3 Dimensions - Back and Bottom Manufacturer reserves the right to change specifications or designs without notice.
  • Page 14 RTi 2 series IM 14 of 47 ECOER INC. 2.3 Dimensions - Left and Top Figure 2.4 Top Figure 2.5 Left Manufacturer reserves the right to change specifications or designs without notice. May. 2025...

  • Page 15: Installation

    RTi 2 series IM 15 of 47 ECOER INC. 3. lnstallion 3.1 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. Any obvious damage to the carton box should be...

  • Page 16: Rigging And Lifting

    RTi 2 series IM 16 of 47 ECOER INC. 3.3 Rigging and Lifting Exercise care when moving the unit. Do not remove any packaging until the unit is near the place of installation. Rig the unit by attaching chain or cable slings to the lifting holes provided in the base rails.
  • Page 17 RTi 2 series IM 17 of 47 ECOER INC. Exposure to a corrosive environment may shorten the life of the equipment, corrode metal parts, and/or negatively affect unit performance. Corrosive elements include, but are not limited to: sodium chloride, sodium hydroxide, sodium sulfate, and other compounds commonly found in ocean water, sulfur, chlorine, fluorine, fertilizers, and various chemical contaminants from industry/manufacturing plants.
  • Page 18 RTi 2 series IM 18 of 47 ECOER INC. Position unit so water, snow, or ice from Min 24’’ Min 12’’ to Access Panel Structure roof or overhang cannot fall directly on unit. Supply Air Duct Figure 3.5 Unit location...
  • Page 19 RTi 2 series IM 19 of 47 ECOER INC. The default orientation from the factory is for horizontal airflow. Convert the unit to downflow using the following procedure: 1. Before moving the unit onto the curb, the forklift protective plates at the bottom of the unit must be removed.
  • Page 20 RTi 2 series IM 20 of 47 ECOER INC. 3.6 Ductwork Field ductwork must comply with the National Fire Protection Association NFPA 90A, NFPA 90B and any applicable local ordinance(s). Sheet metal ductwork run in unconditioned spaces must be insulated and covered with a vapor barrier. Fibrous ductwork may be used if constructed and installed in accordance with SMACNA Construction Standard on Fibrous Glass Ducts.

  • Page 21: Install Drain Pipe

    RTi 2 series IM 21 of 47 ECOER INC. 3.7 Install Drain Pipe Unit should be installed in accordance with national and local safety codes, including but not limited to ANSI/NFPS No. 70, local plumbing and wastewater codes and any other applicable codes.

  • Page 22: Air Filter (Not Factory-Installed)

    RTi 2 series IM 22 of 47 ECOER INC. 3.8 Air Filter (Not Factory-Installed) Filters and filter racks are not included with the unit and must be field supplied. An external filter or other means of filtration must be properly sized for a maximum of 300 feet/min.
  • Page 23 RTi 2 series IM 23 of 47 ECOER INC. 3.9 Refrigerant Charge and Room Area Limitations 3.9.1 Opening conditions for connected rooms The appliances are connected via an air duct system to one or more rooms, the bottom of the air outlet of the air duct in the room should be at a height ≥7.3ft/2.2m from the floor.
  • Page 24 RTi 2 series IM 24 of 47 ECOER INC. 3.9.2 R454B refrigerant charge amount and minimum room area TAmin TAmin TAmin TAmin [oz/kg] [ft²/m²] [oz/kg] [ft²/m²] [oz/kg] [ft²/m²] [oz/kg] [ft²/m²] 56.5/1.6 51/4.74 134/3.8 126/11.67 211.6/6.0 198/18.43 289.2/8.2 271/25.18 63.5/1.8 60/5.53 141.1/4...

  • Page 25: Electrical Requirement

    RTi 2 series IM 25 of 47 ECOER INC. 4. Electrical Requirement Power wiring must comply with National, State and Local codes. WARNING Disconnect all power to unit before installing or servicing. More than one disconnect switch may be required to de-energize the equipment.

  • Page 26: Power Supply

    RTi 2 series IM 26 of 47 ECOER INC. 4.3 Power Supply WARNING Label all wiring prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. Any power supply and circuits must be wired and protected in accordance with federal, state and local electrical codes.
  • Page 27 RTi 2 series IM 27 of 47 ECOER INC. 4.4 Low voltage signal wiring Class 2 low voltage control wiring should not be run in conduit with main power wiring and must be separated from power wiring, unless class 1 wire of proper voltage rating is used.

  • Page 28: Airflow Performance

    RTi 2 series IM 28 of 47 ECOER INC. 5. Airflow Performance Airflow performance data is based on cooling performance with a coil and no filter in place. Check the Performance table for appropriate unit size selection. External static pressure should stay within the minimum and maximum limits shown in the table below in order to ensure proper airflow.

  • Page 29: Indoor Blower Control Function

    RTi 2 series IM 29 of 47 ECOER INC. 6. Indoor Blower control function 6.1 Airflow motor speed mode Airflow motor speed mode setting by SW1 Model Remark SW1-1 Airflow motor mode setting 2-stage airflow mode ERDA19H- 60ABA Variable airflow mode Default Table 6.1...

  • Page 30: Alarm Input

    RTi 2 series IM 30 of 47 ECOER INC. 6.4 O/B signal support O/B signal support setting by SW1 Model Remark SW1-4 Airflow motor speed setting B signal enable ERDA19H- 60ABA O signal enable Default Table 6.5 The PCB supports the O/B signal setting by SW1, , but no adjustment is allowed here, keep the OFF position.

  • Page 31: Start-Up

    RTi 2 series IM 31 of 47 ECOER INC. 7. 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 installation actions have been completed.

  • Page 32: System Charge Adjustment

    RTi 2 series IM 32 of 47 ECOER INC. 8. System Charge Adjustment 8.1 Weigh-in method Weigh-in method can be used for the initial installation, or anytime a system charge needs to be replaced. Weigh-in method can also be used when power is not available on the job site or the ambient temperature is improper to use refrigerant coefficient and sub-cooling charge method.
  • Page 33 RTi 2 series IM 33 of 47 ECOER INC. 8.2 Auto charge mode NOTES: 1. This AUTO charge mode is suitable for ambient temperature between 50℉ and 115℉. But for the best results, indoor temperature should be kept between 70℉ and 80℉. For outdoor ambient temperature is below 50℉, use weigh-in charge method only.
  • Page 34 RTi 2 series IM 34 of 47 ECOER INC. Refrigerant coefficient The refrigerant coefficient is used to evaluate the refrigerant level in the ecoer system. Undercharged Overcharged Proper Use either way below to end AUTO charge mode Press BS4 once/ After 2 hours running (Automatically EXIT)/ Turn off the system at thermostat...
  • Page 35 RTi 2 series IM 35 of 47 ECOER INC. 8.3 Sub-cooling check Refer to the following steps to charge refrigerant by sub-cooling degree in cooling charge mode. STEP1 CALCULATE SUPERHEAT ON SUCTION LINE Final Superheat ( ℉ ) Suction line TEMP ( ℉...
  • Page 36 RTi 2 series IM 36 of 47 ECOER INC. STEP3 STABILIZE THE SYSTEM RECORD 1. Wait twenty (20) minutes for the unit to stabilize. When the sub-cooling matches the chart, the system is properly charged. 2. Only the discharge pressure (HP) can be measured, and the suction pressure (LP) is in the normally closed state.

  • Page 37: System Operation

    RTi 2 series IM 37 of 47 ECOER INC. 9. System Operation 9.1 Default display LED on main control board can display the operating status of outdoor unit (ODU). SEG1 SEG2 SEG3 7 segment display SEG1: Normally blank, but it displays codes “0 to 9” accordingly if there is damaged sensor and command response.
  • Page 38 RTi 2 series IM 38 of 47 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 39 RTi 2 series IM 39 of 47 ECOER INC. 9.2 Field setting in drive PCB Outdoor condensing units’ functions can be applied by dipping switch and pressing buttons. 9.2.1 Setting by dip switches SW1 Dip switch Description NO ． Setting item...
  • Page 40 RTi 2 series IM 40 of 47 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 41 RTi 2 series IM 41 of 47 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. Symbol Function Item Description...
  • Page 42 RTi 2 series IM 42 of 47 ECOER INC. 9.3 Major components function Evaporator Condenser Blower (ST1) Gauge Port Gauge Port Figure 9.3 Refrigerant Circuit Name Symbol Function Adjusts refrigerant flow rate by changing the speed (RPS) based on objective Inverter compressor pressure.

  • Page 43: Compressor Control

    RTi 2 series IM 43 of 47 ECOER INC. 9.4 Control logic description 9.4.1 Operation mode SW1_3=OFF (factory), the system uses Y/O/C signal to operate heat pump function. SW1_3=ON has been set, the system uses Y/C signal to run cooling only.

  • Page 44: Defrost Control

    RTi 2 series IM 44 of 47 ECOER INC. 9.4.4 Defrost control This system carries out demand defrost control if any one of the following conditions satisfy. The calculated temperature difference between ambient temperature (TA) and defrost temperature (TH) is called Delta T. After Delta T is achieved and continues for 5 minutes.

  • Page 45: Troubleshooting

    RTi 2 series IM 45 of 47 ECOER INC. 10. 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 46 46 of 47 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 the service manual for troubleshooting details. Code...

  • Page 47: Wiring Diagram

    RTi 2 series IM 47 of 47 ECOER INC. 11. Wiring Diagram Manufacturer reserves the right to change specifications or designs without notice. May. 2025...
  • Page 48 RTi 2 series IM 48 of 47 ECOER INC. ©2022 ECOER INC. 44040 McDermott Road, Suite 200 Plano, Texas 75024 Tel: 703-348-2538 www.ecoer.com E.AC.2317000158 A/1 Manufacturer reserves the right to change specifications or designs without notice. May. 2025...

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