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1. D-BACS - Daikin

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Fundamental of DIII-NET<br />

Initial setting for “Central zone control”<br />

When HRV unit is connected to the central transmission line (terminal connector no. (F1) and (F2)), it is necessary to make a initial<br />

setting of “collective zone interlock” by the remote controller for indoor unit. (Factory set “OFF”.)<br />

Make initial setting as follows.<br />

Combination with central controller<br />

Central controller �:<br />

Possible × : Impossible<br />

Centralized controllers Operation · function<br />

Multi-function<br />

centralized<br />

controller<br />

Unified ON / OFF<br />

controller<br />

1 unit —<br />

Schedule timer<br />

Adapter PCB for<br />

remote control<br />

— —<br />

1 unit 1 – 4 units — —<br />

1 unit —<br />

1 unit —<br />

1 unit 1 – 4 units 1 unit —<br />

— 1 – 4 units — —<br />

— — 1 unit —<br />

— — 1 unit —<br />

— — — 1 unit<br />

Interlocked Independent Initial setting for<br />

operation operation / stop “central zone<br />

(Automatic (By central control”<br />

selection) controller)<br />

�<br />

× ON<br />

× × OFF<br />

�<br />

× ON<br />

× �<br />

OFF<br />

�<br />

× ON<br />

× × OFF<br />

�<br />

× ON<br />

× �<br />

OFF<br />

It is impossible to operate. ON<br />

× �<br />

OFF<br />

It is impossible to operate. ON<br />

× �<br />

OFF<br />

�<br />

× ON<br />

×<br />

× (Only collective<br />

operation)<br />

OFF<br />

�<br />

× ON<br />

×<br />

× (Only collective<br />

operation)<br />

OFF<br />

Cautions<br />

When you make an initial setting “ON”, the interlocked operation has a priority, and it is impossible to operate / stop HRV unit<br />

independently by the central remote controller or the unified ON / OFF controller. If there is no indoor unit for interlocked<br />

operation in the same zone, make an initial setting “OFF”.<br />

When you make an initial setting “OFF”, the independent operation of HRV unit has a priority, and the interlocked operation is<br />

not possible.<br />

When the HRV unit is operated independently by the central controller, the HRV unit will not operate until the preset time elapses<br />

if the precool / preheat time setting is set. Therefore, please do not set the precool / preheat time setting in normal operation.<br />

Example of system<br />

Central<br />

remote<br />

controller<br />

Unified ON / OFF<br />

Controller<br />

The unit 1<br />

The operation and display by the central<br />

controller will be basically the same as those on<br />

the remote controller for indoor unit. However,<br />

the HRV unit cannot be operated independently<br />

by the central controller.<br />

The unit 2<br />

The operation of HRV unit is interlocked with<br />

indoor units in the same zone, and the HRV unit<br />

can also be operated independently by the<br />

central remote controller. However, it can not be<br />

operated independently by the unified ON / OFF<br />

controller.<br />

The unit 5<br />

When the central remote controller is used, each<br />

unit will be one zone, unless you set the zone for<br />

plural units.<br />

Zone 1<br />

Remote controller for indoor unit<br />

Zone 2 Zone 3<br />

46 6.4 Setting Group No. for Centralized Control<br />

5<br />

Collective zone<br />

interlock setting “OFF”<br />

1<br />

Collective zone<br />

interlock setting “OFF”<br />

4<br />

Collective zone<br />

interlock setting “OFF”<br />

2<br />

Collective zone<br />

interlock setting “ON”<br />

3<br />

Collective zone<br />

interlock setting “OFF”<br />

(HC0095)

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