Specifications

16
Table 9 — Part Load Data Percent Displacement, Standard Units with Minimum Load Valve
*Hot gas bypass (minimum load) valve energized. NOTE: These capacity steps may vary due to different capacity
staging sequences.
30MP UNIT SIZE
CONTROL
STEPS
CAPACITY STEPS
(% Displacement)
015
1
2
3
18*
50
100
020
1
2
3
25*
50
100
030
1
2
3
34*
50
100
040
1
2
3
4
21*
33
67
100
045
1
2
3
4
22*
33
67
100
47
46
45
44
43
42
41
0 200 400 600 800 1000
TIME (SECONDS)
2 STARTS
3 STARTS
DEADBAND EXAMPLE
LWT (F)
MODIFIED
DEADBAND
STANDARD
DEADBAND
8
7
6
5
LWT (C)
LEGEND
LWT — Leaving Water Temperature
Fig. 11 — Deadband Multiplier
1
60
170
130
140
150
160
110
120
130
80
90
100
50
60
70
30
40
-30 -20 -10 0 10 20 304050607080
SCT (F)
SST (F)
LEGEND
Fig. 12 — Operating Envelope for R-410A Compressor
SCT —
Saturated Condensing Temperature
SST —
Saturated Suction Temperature
a30-4969