Coils - Daikin ATB03RA Technical Data Manual

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For Modbus (ALC00902A) and BACnet (ALC00908A) modules selection there is no exclusion
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Room thermostat (ALC00822A) is supplied with the main unit (ATB0**A) as a standard item
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Commissioning module (ALC00895A) is required for purpose of either airflow volumes or static
pressure value changes from the ones set at factory.
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The unit gets delivered with its nominal air flow rate set up at factory. To adjust its operation to the
project-specific parameters, kindly select the optional commissioning module ALC00895A or refer to
Daikin Service Dept. Alternatively, you can also commission the units using the web server HMI access
(default feature)
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When a mixing and/or an external Damper is selected Astra will automatically add the modulating
actuator.

5.3.2. Coils

Modular T pro version can be equipped with different types of coils, all provided as accessory, to guarantee
the thermal comfort.
An electric heater or water heating coil are available as accessories as preheating coil.
To manage the thermal load in both winter and summer seasons, a DX or water-based coils are available as
main coil option. Both must be installed inside the unit along with their drip tray. Please refer to the
installation manual for further information on the installation.
DX and water coils are provided in left and right version based on unit version chosen. It is not possible to
install a right (left) coil version if a left (right) unit has been selected and vice-versa.
A water coil, installed inside the unit, and an electric heater, installed in the ductwork, are available as post
heating options. Like DX and water main coils, also the post heating water coil is available with right and left
versions.
Modular T can be equipped with up to three coils (pre, main and post) and all of them work on modulating
way at the same time.
Astra Web selection software automatically adds a temperature probe (ALP00TEA) whenever needed.
For each size, users can select two different electric heating coils. Both can be mounted on fresh and supply
side depending on specific project requirements.
The additional Digital PCB for external accessories (option: ATE00DPUA), is mandatory when a coil, mounted
externally of the main unit, is selected. The coils mounted externally of the main unit are:
- Pre and post electric coil
- Pre heating water coil
5.3.2.1. Water coil
A cooling and heating water coil is available as accessory to guarantee the thermal treatment. In addition,
either a 2- or 3-way valves (ATV**HW2A, ATV**HW3A, ATV**CW2A, ATV**CW3A) must be ordered along
with modulating actuators (ATE00AMVA). Astra Web selection software will automatically add the actuator
wenever the valve option is selected.
The water coil must be installed inside the unit along with its drip collection tray. Please follow the dedicated
IOM for further information on the installation procedure. Water coil is provided in left and right version
based on unit version chosen. It is not possible to install a right (left) coil version if a left (right) unit has been
selected. In the following table, main technical info of the water coil for Modular T are summarized.
Databook Modular T - October 2022 - Rev. 00 28