Carrier 040-420 - Manual (Page 21)

Table 4C Capacity Control Steps, 130-210 and Associated Modular Units
LOADING SEQUENCE A SEQUENCE B
Compressors
%
Displacement
1 1
5 0
61
a 3
9 4
UNIT
SIZE
CONTROL
S T E P S Displacement Compressors
A l *
l
Al
Al
Al
Al
Al
Al
Al
Al
Al
Al
Al
At t
Al
Al
Al
AI
Al
A l *
Al
Al
l
,A2,Bl
Al
Al
l
,A2,Bl
Al
Al
l
,A2,A3,Bl
At
Al
l
,A2,A3,61
Al
Al
l
,A2,A3,A4,Bi
Al
*
Al
Al
Al
Al
Al
Al
l
,82,83
Al
Al
Al
l
,Bl
Al
Al
Al
Al
Al
AI
AI
,
,
1 4
Al
Al
Al
Al
Al
Hz)
210,
,
*
Al
At
l
,B2
Al
Al
l
,B2,B3
Al
Al
Al
Al
Al
210,
*Unloaded compressor.
j-Compressor unloader, standard.
**Compressor unloader, accessory.
unloaders, both unloaded.
NOTE: These capacity control steps may vary due to lag compressor sequencing.
2 1