Daikin REYQ72-432XAYCU, Service Manual

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Field Setting from Outdoor Unit SiUS371901EB
253 Part 5 Field Settings and Test Operation
2.7 Night-Time Low Noise Operation and Demand Operation
2.7.1 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.
Setting Content
Level 1 Set the outdoor fan to Step 6 or lower.
Level 2 Set the outdoor fan to Step 5 or lower.
Level 3 Set the outdoor fan to Step 4 or lower.
A.
1.
When night-time low noise operation is carried out by external contact (with
the use of the external control adaptor for outdoor unit).
Connect external control adaptor for outdoor unit and short circuit terminal of
night-time low noise operation (Refer below figure). If carrying out demand or low
noise input, connect the adaptor’s terminals as shown below.
2.
3.
4.
While in setting mode 2, set the item 2-12 (External low noise or demand setting)
to ON.
If necessary, while in setting mode 2, select an external low noise level for the item
2-25.
If necessary, while in setting mode 2, set the item 2-29 (Capacity priority setting) to
ON. (If the 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.)
B.
1.
2
3.
4.
When night-time low noise operation is carried out automatically. (External
control adaptor for outdoor unit is not required.)
While in setting mode 2, select a night-time low noise operation level for the item
2-22.
If necessary, while in setting mode 2, select a starting time of night-time low noise
operation (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.)
If necessary, while in setting mode 2, select an ending time of night-time low noise
operation (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.)
If necessary, while in setting mode 2, set the item 2-29 (Capacity priority setting) to
ON. (If the 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.)
O u tdoor w iring indicated
b y dotted line
External control
adaptor for
o
u tdoor u nit
Host comp u ter
monitor panel
or demand
controller
X
X
X
X
F1
F2
P3
P4
F1
F2
P3
P4
X X X X X X
1 2 3 C
Demand
Lo w
noise