Daikin FTKS50BVMB, Service Manual

Page: 176 / 456

SiEN18-622 Field Setting
Test Operation 163
3.2.2 Setting of Low Noise Operation and Demand Operation
Setting of Low Noise Operation
By connecting the external contact input to the low noise input of the outdoor unit external
control adapter (optional), you can lower operating noise by 2-3 dB.
When the low noise operation is carried out automatically at night (The external control
adapter for outdoor unit is not required)
1. While in "Setting mode 2", select the setting condition (i.e., "Mode 1", "Mode 2", or "Mode 3")
for set item No. 22 (Setting of nighttime low noise level).
2. If necessary, while in "Setting mode 2", select the setting condition (i.e., "20:00", "22:00", or
"24:00") for set item No. 26 (Setting of start time of nighttime low noise operation).
(Use the start time as a guide since it is estimated according to outdoor temperatures.)
3. If necessary, while in "Setting mode 2", select the setting condition (i.e., "06:00", "07:00", or
"08:00") for set item No. 27 (Setting of end time of nighttime low noise operation).
(Use the end time as a guide since it is estimated according to outdoor temperatures.)
4. If necessary, while in "Setting mode 2", set the setting condition for set item No. 29 (Setting
of capacity precedence) 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 nighttime.)
Image of operation
Oper a tion s o u nd
Time s et with “ Night-time low noi s e s t a rt s etting ” Time s et with “ Night-time low noi s e end s etting ”
Night time
Oper a tion s o u nd level s et with
“ Night-time low noi s e s etting ”
S et with “ Night-time low noi s e s t a rt s etting ” .
(F a ctory s etting i s “ PM 10:00 ” .)
S et with “ Night-time low noi s e end s etting ” .
(F a ctory s etting i s “ AM 8 :00 ” .)
If c a p a city precedence i s s et in “ C a p a city
precedence s etting ” , the f a n s peed will b e
incre as ed a ccording to the lo a d of a ir
conditioning when lo a d i s he a vier
Oper a tion s o u nd d u ring
night-time low noi s e mode
i s in s tr u cted c a n b e s et with
“ Night-time low noi s e level
s etting ” .
(F a ctory s etting i s “ OFF ” .)
Oper a tion s o u nd
of mode 1
Oper a tion s o u nd
of mode 2
Oper a tion s o u nd
of mode 3
R a ted oper a tion
s o u nd