Connection Between Demand Response Enabling Device (Dred) And Outdoor Unit - Hitachi AirCore 700 Installation & Maintenance Manual

5. Connection between Demand Response Enabling Device (DRED) and Outdoor Unit

5. Connection between Demand Response Enabling
Device (DRED) and Outdoor Unit
This function is supported by Australian Standard "Demand response capabilities and supporting
technologies for electrical products"
•
AS/NZS 4755.3.1:2014; or
•
AS/NZS 4755.2 (when published); or
•
the equivalent of the superseded AS/NZS 4755.3.1.2012 (for a limited period until 1 July 2025 or 12
months after the publication of AS/NZS 4755.2, whichever is the later date).
Air conditioners are required to comply with three DRMs-DRM1,DRM2,DRM3.
When using the DRED function, it is necessary to set
it is achieved by short-circuit DRM1 and SC,DRM2 and SC,DRM3 and SC.
The function setting should be performed during the outdoor unit stoppage.
Start
DSW2-No.5 is "ON".
The menu indication is changed
by pressing PSW2 or PSW3 and
displayed repeatedly the function
code and the detail along the
order of the allow.
(
PSW2
Method
PSW3
End
DSW2-No.5 is "OFF".
NOTE:
Fill out the function No. of each setting
●
when setting the optional function
The example is for setting 1.
WARNING
!
When controlling the switch on PCB, pay attention not touch to other electrical parts.
●
It will cause an electrical shock.
No.
38
When the input terminals DRM1 and SC are short-circuited, the compressor is forcibly stopped
indoor unit(s) is put under Thermo-OFF condition.
The remote control switch display remains the running mode with the stoppage code No. 10.
Circular at
Heating
Thermo-OFF
SET
Night-Shi
)
SET
Cancellation of
Outdoor Ambient
Temperature Limit
SET
No Function
Example
SET
SET
Function Setting Method
7-Segment Display
Setting Item
SEG2 SEG1
0 The setting before shipment
1 DR instruction setting
to 1 through function setting firstly. Afterwards,
The setting before shipment is "0"
(Not Available).
Not Available
Press PSW1
Available
Not Available
Press PSW1
Available
Not Available
Press PSW1
Not Available
Press PSW1
Available
-20-
Available
and the