Installation and Commissioning Guide
ICUNO-MOD
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Installation and Commissioning Guide ICUNO-MOD
Doc. No. 9590-3013
Ver. 5 200722
ActronAir is constantly seeking ways to improve the design of its products, therefore specifications are subject to change without notice.
Copyright © 2019 Actron Engineering Pty. Ltd.
05. BMS Control
This section of the document provides a guide to using the ActronAir BMS Table. This section explores the Modbus registers
relevant to each BMS Operation Mode, their usage and meaning to control the various units.
See Section 04.04 for instructions on configuring your unit for BMS Control.
Additional information for Monitoring can be found in Section 06.
05.01. Basic BMS Control
If the Air Conditioning unit is setup for Basic BMS Control, then Modbus Analogue Register 505 should read a 1. If Register
505 reads any other value, then the unit has not been correctly setup to run in Basic BMS Control. See
Section 05.01 for
instructions on configuring your unit for Basic BMS Control.
05.01.01. Operating unit in Basic BMS Control
The unit can be operated following the steps below:
Step
Operation
1.
Set the Fan Mode (Modbus Analog 4)
1 – Low
2 – Medium
3 – High
2.
Set Supply Fan Controls (Modbus Analog 105)
0 – Standard
1 – Continuous Fan
3.
For zoned systems, set each zone to Off/On
0 - Off 1 - On
4.
Set the Mode of Operation (Modbus Analog 101)
1 – Heat Only 2 – Cool Only
3 – Auto Changeover 4 – Fan Only
5.
Set the Master Setpoint Temperature (Modbus Analog 102). Minimum and
Maximum setpoint limits can be read in the BMS table in Section 05.01.03
230 = 23.0°C 267 = 26.7°C
NOTE:
Ensure that at least one zone is turned On whenever the system is On.
05.01.02. Return Air Filter Notification
The Return Air filter can be monitored following the steps below:
Step
Operation
1.
Set the Indoor Filter Timer to the required time* (Modbus Analog 7).
See installation and commissioning guide for more details.
2.
Read the Indoor Filter Run Hours (Modbus Analog 509) for the number of hours
the indoor fan has run since the last time the filter was cleaned.
3.
The Air Filter Alarm (Modbus Analog 506) will be set when the run hours equal the
filter timer.
4.
To reset the alarm, access the unit and clear the air filter, then reset the Filter
Notification (Modbus Analog 6)
0 = Off
1 = Reset
5.
Once the Filter Notification has been reset, then the Indoor Filter Run Hours will
reset to 0, and the Air Filter Alarm will clear.
6.
To disable the Air Filter Notification function, set the Indoor Filter Timer to
-1
(Modbus Analog 7)
* Setting the Indoor Filter timer will reset the Indoor Filter run hours and clear any Air Filter
Alarm on the system.
