Trane TVR Pro CO Series Service Manual page 38

1.2 Modes Set on Main PCB
1.2.1 Silent time setting
1.2.1.1 Night silent time setting
Night silent mode is activated X hours after the peak daytime temperature, and is deactivated after Y hours, where X and Y
are as specified in Table 4-1.2.
Maximum
output
Load
Operation
sound dB
Table 4-1.2: Night silent time setting
Switch Switch positions
0
ENC5
1
2
3
Figure 4-1.4: Night silent mode example (default setting, 6h/10h)
The outdoor unit senses the peak daytime
outdoor ambient temperature
8:00
Description
Night silent time is 6h/10h (default)
Night silent time is 6h/12h
Night silent time is 8h/10h
Night silent time is 8h/12h
6
Max. 15dB
reduction
14:00 20:00
Night silent
mode activated
37
X
6 10
6 12
8 10
8 12
10
6:00
Night silent mode
deactivated
Y