Trane Jupiter JDAC Series User Manual (English)

Questions and Answers:

P
Paul MooreAug 3, 2025
What to do if Trane Chiller unit does not start?
- C
  Craig NovakAug 3, 2025
  If your Trane Chiller unit isn't starting, there could be a few reasons: * First, check that the power is on and the unit's main switch on the electrical panel is closed, ensuring there's a power supply to the unit's electrical panel. * Second, ensure the IM automatic circuit breaker on the AUX circuit is set and check the fuse on the main board to verify power to the auxiliary circuits. * Third, check that the control panel connectors are correctly located in their sockets, ensuring the control panel can start the unit.
J
Joseph HaynesAug 8, 2025
Why is the room temperature too high with my Trane Chiller?
- T
  thomasandrewAug 8, 2025
  If the room temperature is too high when using your Trane Chiller, there could be several reasons: * The temperature sensor might not be working correctly. Check its electrical connections and the control configuration. * The thermal load could be higher than expected. Check the room’s thermal load. * The three-way valve might be malfunctioning. Check the electrical connections of the servomotor valve, manually open the valve using the control knob, and ensure the chilled water supply is sufficient and the shut-off valves are open.
J
josephbowersAug 12, 2025
How to troubleshoot absent or low air flow in Trane Jupiter JDAC Chiller?
- C
  Cathy PerezAug 12, 2025
  If you're experiencing absent or low airflow with your Trane Chiller, here are a few things to check: * First, make sure there is a power supply to the fans. * Second, inspect the filter for blockages. Shake the dust out of the cartridge and clean with a vacuum cleaner, replacing the filter if it's completely blocked. Also, check the correct setting of the dirty filter pressure switch PFS. * Third, verify that the fans are rotating in the correct direction by reversing input phases.
R
Rebecca StevensAug 18, 2025
Why is room humidity too high with Trane Chiller?
- C
  Christopher RileyAug 18, 2025
  If the room humidity is too high when using your Trane Chiller, consider the following: * The latent load might be higher than expected. Check the latent load, fresh air conditions and volume, and external air infiltration. * The chilled water might not be sufficiently cold for dehumidification. Try lowering the chilled water temperature until condensate is present on the surface of the coil.
D
Daniel BarrettAug 23, 2025
What to do if room humidity is too low with Trane Chiller?
- J
  Jason MoralesAug 23, 2025
  If the room humidity is too low when using your Trane Chiller, here's what you can check: * First, check the water supply pressure to the humidifier. * Second, ensure that the humidifier is functioning correctly.
U
uwalkerAug 28, 2025
What to do if safety thermostats intervene in Trane Jupiter JDAC Chiller?
- L
  Lorraine JordanAug 28, 2025
  If one or both of the electrical heaters’ safety thermostats are tripping in your Trane Chiller, check the continuity of the connection of the safety thermostats to the control system. Also, replace one or both of the electrical heaters’ safety thermostats if broken.

Trane Jupiter JDAC Series Specifications

General

Series	JDAC
Category	Chiller
Type	Air-Cooled
Refrigerant	R-410A
Compressor Type	Scroll
Weight	Varies by model
Voltage Options	460V/3Ph/60Hz, 575V/3Ph/60Hz

Summary

General Instructions and Manual Overview

Manual Information and Symbols

Details manual content and explains symbols used for warnings and procedures.

Storage and Disposal

Guidelines for storing the unit and procedures for its safe disposal and recycling.

Preliminary and Disassembly Operations

Steps for preparing the unit for disassembly and removing key components like panels.

Safety Instructions and Warnings

General Safety Instructions

Emphasizes safety device integrity, authorized personnel, and adherence to standards.

Warnings for Use and Environment

Covers intended use, environmental limits, and safe usage practices.

Safety During Maintenance

Mandates qualified personnel and power disconnection before maintenance.

Jupiter System Introduction and Air Flow

Presentation of the Jupiter System

Describes Jupiter precision air conditioning units for various environments.

Upflow vs. Downflow Air Patterns

Explains the two air flow configurations: upwards discharge (Upflow) and downwards discharge (Downflow).

Unit Models and Identification Plate

Model Coding and Identification Plate

Explains the model code structure and data found on the unit's identification plate.

Direct Expansion Unit Specs: Centrifugal Fans

Air Cooled Centrifugal Fans Specs

Technical specifications for JDAC/JUAC models with centrifugal fans.

Water Cooled Centrifugal Fans Specs

Technical specifications for JDWC/JUWC models with centrifugal fans.

Direct Expansion Unit Specs: Radial Fans (EC)

Air Cooled Radial Fans (E.C. Tech) Specs

Technical specifications for JDAV/JUAV models with radial fans and E.C. technology.

Water Cooled Radial Fans (E.C. Tech) Specs

Technical specifications for JDWV/JUWV models with radial fans and E.C. technology.

Operating Descriptions: DX Units

Air Cooled DX Units (DXA) Operation

Describes how DX units extract heat and transfer it using air-cooled condensers.

Water Cooled DX Units (DXW) Operation

Explains how DXW units transfer heat to water via a brazed plate exchanger.

Component Identification: DX Units

JDA/JDW Model Components

Illustrates and labels main components of JDA*/JDW* models.

JUA/JUW Model Components

Illustrates and labels main components of JUA*/JUW* models.

Electrical Panel and User Terminal Details

User Terminal Functionality

Describes the functions of the user terminal keys and display for unit control.

Electrical Panel Components

Details the electrical panel, including magnetothermic switches, sensors, and terminal boards.

Unit Delivery Checks and Installation Site Prep

Unloading and Packaging Checks

Procedures for unloading the unit from the pallet and checking package contents.

Installation Area Requirements

Specifies conditions for the installation area, including floor, electrical system, and clearances.

Unit Positioning Guidelines

Instructions on positioning the unit, especially regarding surface evenness and raised floors.

Unit Installation: Frames and Panel Removal

Mounting Frame Installation

Steps for installing the unit on raised flooring using a mounting frame.

Front Panel Removal

Procedure for opening and removing the unit's front panel.

Internal Panels and Electrical Connections

Internal Protection Panels

Describes protective metal coverings for fan compartments and heaters.

Electrical Connection Procedures

Details safety warnings and steps for connecting the machine to the power supply.

Drainage and Auxiliary Connections

Connecting to Building Drains

Instructions for connecting condensate drains to the building's drainage system.

Humidifier and Drain Connections

Steps for connecting the humidifier drain and the unit's condensate drain to building drains.

Refrigerant Piping Installation (Air Cooled)

Installation Guide for Refrigerant Lines

Provides guidelines for installing refrigerant pipes, including sun protection and recommended sizes.

Refrigerant Circuit Installation Details

Pipe Sizing and Thickness Standards

Details pipe diameter, bend radius, and thickness requirements for refrigerant lines.

Remote Condenser and Dry Cooler Selection

Lists recommended models for remote air-cooled condensers and dry coolers based on temperature.

Refrigerant Charging & Water-Cooled Connections

Refrigerant Evacuation and Charging

Procedures for evacuating air and charging refrigerant (R410A) into the circuit.

Water Cooled Unit Hydraulic Connections

Specifies ethylene glycol requirements and hydraulic connection details for water-cooled units.

Unit Manual Start-Up and Shutdown

Manual Unit Start-up Sequence

Step-by-step guide for starting the unit, including electrical checks and user terminal interaction.

Manual Unit Shutdown Sequence

Procedure for safely shutting down the unit via the user terminal.

Fan Speed and Voltage Adjustment

Selecting Fan Power Supply Voltage

Instructions for adjusting input voltage percentage for fans via the user terminal.

Centrifugal Fan Nominal Regulation Data

Table showing nominal fan regulation for JDCC/JUCC units with/without heaters.

Setting Control and Safety Devices

Air Flow Sensor Adjustment (FS Switch)

Procedure to set the FS differential pressure switch for air flow monitoring.

Dirty Filter Sensor Adjustment (PFS Switch)

Procedure to set the PFS differential pressure switch for filter blockage detection.

Maintenance Schedule and Filter Cleaning

3-Month and 6-Month Checks

Lists routine maintenance checks to be performed every three and six months.

Annual and Sixty-Month Checks

Details annual maintenance tasks and checks required every sixty months.

Cleaning and Replacing Air Filters

Instructions for cleaning or replacing the unit's air filters.

Troubleshooting: Start-Up & Temp Control

Unit Does Not Start Issues

Identifies causes and corrective actions when the unit fails to start.

Room Temperature Control Problems

Troubleshooting for high or low room temperatures, covering parameter settings and component issues.

Troubleshooting: Humidity, Fan & Heater Issues

Humidity Control Problems

Diagnoses and resolves issues related to high or low room humidity.

Fan Air Flow Problems

Addresses causes and solutions for absent or low air flow from the fans.

Electrical Heater Safety Thermostat Issues

Troubleshoots problems with electrical heater safety thermostats and wiring.

Troubleshooting: Refrigerant Circuit

High Compressor Discharge Pressure

Identifies causes for high discharge pressure and related safety switch interventions.

Low Compressor Discharge Pressure

Troubleshoots low discharge pressure and water flow issues.

High Compressor Suction Pressure

Addresses causes for high suction pressure, thermal load, and refrigerant overcharge.

Troubleshooting: Compressor Problems

Compressor Not Working or Overloaded

Diagnoses why the compressor isn't working, internal protection intervention, or overload.

Noisy Compressor Causes

Identifies potential causes for compressor noise, including damage or liquid return.

Chilled Water Unit Specs: Centrifugal Fans

230V Centrifugal Fan Models Specs

Technical characteristics for 0020B-0060B2 chilled water units with centrifugal fans.

400V Centrifugal Fan Models Specs

Technical characteristics for 0020A-0060A2 chilled water units with centrifugal fans.

Chilled Water Unit Specs: Radial Fans (EC)

230V Radial Fan Models Specs

Technical characteristics for 0020B-0060B2 chilled water units with radial fans.

400V Radial Fan Models Specs

Technical characteristics for 0020A-0060A2 chilled water units with radial fans.

Chilled Water Unit Operating Description

CW Unit Functionality

Explains how CW units use chilled water for room condition control and their reliability.

Chilled Water Unit Component Details

JUC* Model Components

Illustrates and labels main components of JUC* chilled water models.

JDC* Model Components

Illustrates and labels main components of JDC* chilled water models.

Chilled Water Unit Electrical Setup

Electric Panel and Accessories

Details the electric panel, fans, filter, and chilled water valve system.

Unit Delivery Checks and Installation Area

Packaging and Delivery Inspection

Procedures for inspecting the unit upon delivery and checking package contents.

Installation Area Requirements

Specifies conditions for the installation area, including floor, electrical system, and clearances.

Unit Positioning and Raised Floors

Guidelines for positioning the unit, with emphasis on surface evenness and raised floor installations.

Unit Installation: Frames and Panel Removal

Mounting Frame Installation Steps

Details the process for installing the unit on raised flooring using a mounting frame.

Front Panel Removal Procedure

Instructions for opening and removing the unit's front panel.

Internal Panels and Electrical Connections

Internal Protection Panels

Describes protective metal coverings for fan compartments and heaters.

Electrical Connection Procedures

Details safety warnings and steps for connecting the machine to the power supply.

Drainage and Auxiliary Wiring (CW)

Connecting Condensate to Drains

Instructions for connecting condensate drains to the building's drainage system.

Humidifier Drain Connection

Steps for connecting the humidifier drain to the building's drainage system.

Hydraulic Circuit Filling

Filling the Primary Hydraulic Circuit

Steps for filling the primary circuit, including filtering water and bleeding air.

Filling Conditioner Hydraulic Circuits

Procedure for filling the hydraulic circuits of the conditioners, ensuring cleanliness and closed valves.

Unit Start-Up and Fan Settings Adjustment

Manual Unit Start-up Sequence

Step-by-step guide for starting the unit, including electrical checks and user terminal interaction.

Selecting Fan Power Supply Voltage

Instructions for adjusting input voltage percentage for fans via the user terminal.

Centrifugal Fans: Speed Regulation

JDCC/JUCC Fan Regulation Data

Table showing nominal fan regulation for JDCC/JUCC units with/without heaters.

Radial Fans (EC): Speed Regulation

JDCV/JUCV Fan Regulation Data

Table showing nominal fan regulation for JDCV/JUCV units with/without heaters.

Setting Control and Safety Devices

Safety Device Settings (TSR/TSRA)

Details settings for safety thermostats (TSR, TSRA) and their reset procedures.

Sensor Adjustment: Air Flow & Dirty Filters

Setting the Air Flow Sensor (FS Switch)

Procedure to set the FS differential pressure switch for air flow monitoring.

Setting the Dirty Filter Sensor (PFS Switch)

Procedure to set the PFS differential pressure switch for filter blockage detection.

Maintenance Schedule and Filter Cleaning

3-Month and 6-Month Checks

Lists routine maintenance checks to be performed every three and six months.

Annual and Sixty-Month Checks

Details annual maintenance tasks and checks required every sixty months.

Cleaning and Replacing Air Filters

Instructions for cleaning or replacing the unit's air filters.

Troubleshooting: Temperature Control

Room Temperature Too High

Diagnoses and resolves issues causing excessively high room temperatures.

Room Temperature Too Low

Troubleshoots causes for low room temperatures, including heater and water coil issues.

Troubleshooting: Humidity, Fan, Heater

Humidity Control Problems

Diagnoses and resolves issues related to high or low room humidity.

Fan Air Flow Problems

Addresses causes and solutions for absent or low air flow from the fans.

Electrical Heater Safety Thermostat Issues

Troubleshoots problems with electrical heater safety thermostats and wiring.

Humidifier Accessory Details

Humidifier Component Identification

Illustrates and labels the components of the humidifier accessory.

Humidifier Operation and Feed Water

Humidifier Operating Principle

Explains how the electrode boiler humidifier generates steam using water and electrodes.

Feed Water Quality Requirements

Specifies the required water quality parameters for the humidifier's feed water.

Humidifier Maintenance

Boiler Cylinder Cleaning

Instructions for cleaning the boiler cylinder and removing limescale deposits.

Feed and Drain Connection Checks

Periodic inspection of feed and drain connections for trouble-free humidifier operation.

Electric Heater Features

Electric Heater Operation Modes

Describes the two functions of electric heaters: heating to set point and post-heating.

Heater Replacement and Sensor Details

Replacing Electrical Heaters Safely

Warning and procedure for replacing electrical heaters by qualified electricians.

Temperature and Humidity Sensor

Details the optional temperature and humidity sensor and its replacement procedure.

Fresh Air Intake Connection & Filter

Fresh Air Module Installation

Describes installing the optional fresh air module and connecting ducting.

Fresh Air Filter Maintenance

Instructions for cleaning or replacing the fresh air intake filters.

Discharge Temperature Sensor (Chilled Water)

STM Sensor Installation and Function

Explains the STM sensor as an accessory to maintain supply air temperature above a threshold.

Related product manuals

Trane Sintesis RTAF HE series

176 pages

Trane Jupiter JDAC Series User Manual

Table of Contents

Questions and Answers:

Trane Jupiter JDAC Series Specifications

Summary

General Instructions and Manual Overview

Manual Information and Symbols

Storage and Disposal

Preliminary and Disassembly Operations

Safety Instructions and Warnings

General Safety Instructions

Warnings for Use and Environment

Safety During Maintenance

Jupiter System Introduction and Air Flow

Presentation of the Jupiter System

Upflow vs. Downflow Air Patterns

Unit Models and Identification Plate

Model Coding and Identification Plate

Direct Expansion Unit Specs: Centrifugal Fans

Air Cooled Centrifugal Fans Specs

Water Cooled Centrifugal Fans Specs

Direct Expansion Unit Specs: Radial Fans (EC)

Air Cooled Radial Fans (E.C. Tech) Specs

Water Cooled Radial Fans (E.C. Tech) Specs

Operating Descriptions: DX Units

Air Cooled DX Units (DXA) Operation

Water Cooled DX Units (DXW) Operation

Component Identification: DX Units

JDA*/JDW* Model Components

JUA*/JUW* Model Components

Electrical Panel and User Terminal Details

User Terminal Functionality

Electrical Panel Components

Unit Delivery Checks and Installation Site Prep

Unloading and Packaging Checks

Installation Area Requirements

Unit Positioning Guidelines

Unit Installation: Frames and Panel Removal

Mounting Frame Installation

Front Panel Removal

Internal Panels and Electrical Connections

Internal Protection Panels

Electrical Connection Procedures

Drainage and Auxiliary Connections

Connecting to Building Drains

Humidifier and Drain Connections

Refrigerant Piping Installation (Air Cooled)

Installation Guide for Refrigerant Lines

Refrigerant Circuit Installation Details

Pipe Sizing and Thickness Standards

Remote Condenser and Dry Cooler Selection

Refrigerant Charging & Water-Cooled Connections

Refrigerant Evacuation and Charging

Water Cooled Unit Hydraulic Connections

Unit Manual Start-Up and Shutdown

Manual Unit Start-up Sequence

Manual Unit Shutdown Sequence

Fan Speed and Voltage Adjustment

Selecting Fan Power Supply Voltage

Centrifugal Fan Nominal Regulation Data

Setting Control and Safety Devices

Air Flow Sensor Adjustment (FS Switch)

Dirty Filter Sensor Adjustment (PFS Switch)

Maintenance Schedule and Filter Cleaning

3-Month and 6-Month Checks

Annual and Sixty-Month Checks

Cleaning and Replacing Air Filters

Troubleshooting: Start-Up & Temp Control

Unit Does Not Start Issues

Room Temperature Control Problems

Troubleshooting: Humidity, Fan & Heater Issues

Humidity Control Problems

Fan Air Flow Problems

Electrical Heater Safety Thermostat Issues

Troubleshooting: Refrigerant Circuit

High Compressor Discharge Pressure

Low Compressor Discharge Pressure

High Compressor Suction Pressure

Troubleshooting: Compressor Problems

Compressor Not Working or Overloaded

JDA/JDW Model Components

JUA/JUW Model Components