Night-Time Low Noise Operation And Demand Operation - Daikin VRV RXYQ72-384XAYCA Service Manual

Field Settings for Outdoor Unit
2.6

Night-Time Low Noise Operation and Demand Operation

2.6.1 Night-Time Low Noise Operation
By connecting the external contact input to the low noise input of the outdoor unit external control
adaptor (optional), you can lower operating noise.
Level 1
Level 2
Level 3
A. When night-time low noise operation is carried out by external contact (with the use of
the external control adaptor for outdoor unit).
1. Connect external control adaptor for outdoor unit and short circuit terminal of night-time low
2. While in setting mode 2, set the item 2-12 (External low noise or demand setting) to ON.
3. If necessary, while in setting mode 2, select an external low noise level for the item 2-25.
4. If necessary, while in setting mode 2, set the item 2-29 (Capacity priority setting) to ON. (If the
B. When night-time low noise operation is carried out automatically. (External control
adaptor for outdoor unit is not required.)
1. While in setting mode 2, select a night-time low noise operation level for the item 2-22.
2. If necessary, while in setting mode 2, select a starting time of night-time low noise operation
3. If necessary, while in setting mode 2, select an ending time of night-time low noise operation
4. If necessary, while in setting mode 2, set the item 2-29 (Capacity priority setting) to ON. (If the
197
Setting
Set the outdoor fan to Step 6 or lower.
Set the outdoor fan to Step 5 or lower.
Set the outdoor fan to Step 4 or lower.
noise operation (Refer below figure). If carrying out demand or low noise input, connect the
adaptor's terminals as shown below.
External control
adaptor for outdoor unit
Host computer monitor
panel or demand controller
condition is set to ON, when the air conditioning load reaches a high level, the low noise
operation command will be ignored to put the system into normal operation mode.)
(i.e., 8:00 PM, 10:00 PM, or 12:00 AM) for the item 2-26. (Use the starting time as a guide since
it is estimated according to outdoor temperatures.)
(i.e., 6:00 AM, 7:00 AM, or 8:00 AM) for the item 2-27. (Use the ending time as a guide since it
is estimated according to outdoor air temperatures.)
condition is set to ON, when the air conditioning load reaches a high level, the system will be put
into normal operation mode even during night-time.)
Content
F1
X
F2
X
Demand
Low
C
noise
1 2 3
X X X X X X
Outdoor wiring indicated
by dotted line
Part 5 Field Settings and Test Operation
SiUS342004EB