Electra DELTA 22 Service Manual page 28

CONTROL SYSTEM
11.3.2 Target Frequency Setting
The compressor target frequency is a function of the NLOAD number sent from the indoor
controller and the outdoor air temperature.
Basic Target Frequency Setting:
NLOAD
127
10 < NLOAD < 127
10
0
Target frequency limits as a function of outdoor air temperature (OAT):
OAT Range
OAT < 6
6 ≤ OAT < 15
15 ≤ OAT < 24
24 ≤ OAT
11.3.3 Frequency Changes Control
Frequency change rate is 1 Hz/sec.
11.3.4 Compressor Starting Control
Frequency
Step 3
Step 2
Step 1
\
11.3.5 Minimum On and Off Time 3 minutes
11-2
Target Frequency
Maximum frequency
Interpolated value between minimum and maximum frequency
Minimum frequency
Compressor is stopped
Cool mode limits
MaxFreqAsOATC
No limit
Minute
1
Minute
Min 10 Minutes
CONTENT
Heat mode limits
MaxFreqAsOAT1H
MaxFreqAsOAT2H
1
SM DUO38 1-E.1 GB
No limit
Time