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Highlights important warnings and cautions to prevent serious casualties and equipment damage.
Outlines checks for ground strength, levelness, and secure fixing of the unit.
Instructions for configuring the pump speed and operation.
Guidance for initial start-up in cold conditions to prevent thermal shock.
Lists essential checks to perform before switching on the unit after installation.
Provides guidance on identifying and resolving initial installation malfunctions.
Explains how to access and change various field settings for unit configuration.
Step-by-step guide to perform a manual test run of the unit's functions.
Lists final checks to be performed after installation and before initial operation.
Details essential annual checks for the chiller unit components.
Provides initial steps and advice for diagnosing unit problems.
Lists common unit symptoms and their corresponding corrective actions.
Addresses specific issues like pressure relief valve leaks and interface unavailability.
Details error codes, their causes, and recommended corrective actions.
Provides detailed technical data for V3 and W1 models, including capacity, weight, and connections.
Lists electrical parameters for V3 and W1 models, such as power supply and current.
Highlights important warnings and cautions to prevent serious casualties and equipment damage.
Outlines checks for ground strength, levelness, and secure fixing of the unit.
Instructions for configuring the pump speed and operation.
Guidance for initial start-up in cold conditions to prevent thermal shock.
Lists essential checks to perform before switching on the unit after installation.
Provides guidance on identifying and resolving initial installation malfunctions.
Explains how to access and change various field settings for unit configuration.
Step-by-step guide to perform a manual test run of the unit's functions.
Lists final checks to be performed after installation and before initial operation.
Details essential annual checks for the chiller unit components.
Provides initial steps and advice for diagnosing unit problems.
Lists common unit symptoms and their corresponding corrective actions.
Addresses specific issues like pressure relief valve leaks and interface unavailability.
Details error codes, their causes, and recommended corrective actions.
Provides detailed technical data for V3 and W1 models, including capacity, weight, and connections.
Lists electrical parameters for V3 and W1 models, such as power supply and current.
This document is an installation manual for Daikin packaged air-cooled water chillers and packaged reversible air-to-water heat pumps, specifically covering models EWAQ-ACV3 (009, 010, 011), EWYQ-ACV3 (009, 010, 011), EWAQ-ACW1 (009, 011, 013), and EWYQ-ACW1 (009, 011, 013), which use R410A refrigerant. It provides comprehensive instructions for unpacking, installing, connecting, maintaining, and troubleshooting these units.
The Daikin inverter chiller is designed for outdoor installation and serves both heating and cooling applications. It is intended for use with fan coil units or air handling units for air conditioning purposes. The range includes two main versions: a heat pump (EWYQ) for both heating and cooling, and a cooling-only (EWAQ) version. These units are available in six standard sizes: V3 (single phase) with capacities of 9, 10, and 11 kW, and W1 (three phase) with capacities of 9, 11, and 13 kW.
The unit's hydraulic compartment includes essential components for water circulation and temperature regulation. An air purge valve automatically removes air from the water circuit. Three temperature sensors (R11T, R13T, R14T) monitor water and refrigerant temperatures at various points. An expansion vessel (10 L) accommodates changes in water volume due to temperature fluctuations, with a default pre-pressure of 1 bar. A manometer allows for water pressure readout, and a flow switch checks water flow, protecting the heat exchanger and pump from damage. The pump circulates water, and a pressure relief valve opens at 3 bar to prevent excessive pressure. Shut-off valves allow isolation of the unit's water circuit from the residential water circuit for maintenance. A water filter removes dirt to prevent damage to the pump or blockage of the evaporator.
The digital controller, supplied as a kit for indoor mounting, provides a user-friendly interface for setting up, using, and maintaining the unit. It allows users to turn the unit ON/OFF, select between cooling and heating modes (for heat pump models), and set the water temperature. Certain user interface buttons can be made unavailable based on three permission levels (1, 2, or 3), with level 2/3 determined by field setting [0-00].
The unit supports connection to benefit kWh rate power supply delivery systems, allowing for potential power interruptions or limited electricity consumption during specific periods. This feature enables the unit to switch into a forced-off mode when a specific input signal is received, preventing compressor operation.
Nominal Capacity:
Dimensions (H x W x D):
Weight:
Connections:
Expansion Vessel:
Pump:
Sound Pressure Level (at 1m in front of the unit, free field condition):
Internal Water Volume:
Pressure Relief Valve Water Circuit:
Operation Range - Water Side:
Operation Range - Air Side (RH: 85%):
Electrical Specifications:
Refrigerant:
Installation Site Selection:
Water Circuit Management:
Digital Controller Operation:
Benefit kWh Rate Power Supply:
Start-up and Configuration:
Regular Checks:
Chiller Unit Maintenance:
Glycol System Maintenance:
Digital Controller Maintenance:
Troubleshooting:
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General
