48
Table 35 — Cooling Configuration
CSB A1 Feedback Alarm (CS.A1)
This configuration is used to enable or disable the compressor
A1 feedback alarm. This configuration must be enabled when-
ever A1.EN is enabled.
CSB A2 Feedback Alarm (CS.A2)
This configuration is used to enable or disable the compressor
A2 feedback alarm. This configuration must be enabled when-
ever A2.EN is enabled.
CSB A3 Feedback Alarm (CS.A3)
This configuration is used to enable or disable the compressor
A3 feedback alarm. This configuration must be enabled when-
ever A3.EN is enabled.
CSB B1 Feedback Alarm (CS.B1)
This configuration is used to enable or disable the compressor
B1 feedback alarm. This configuration must be enabled when-
ever B1.EN is enabled.
CSB B2 Feedback Alarm (CS.B2)
This configuration is used to enable or disable the compressor
B2 feedback alarm. This configuration must be enabled when-
ever B2.EN is enabled.
CSB B3 Feedback Alarm (CS.B3)
This configuration is used to enable or disable the compressor
B3 feedback alarm. This configuration must be enabled when-
ever B3.EN is enabled.
Capacity Threshold Adjust (Z.GN)
This configuration provides an adjustment to the SUMZ Cool-
ing Algorithm for capacity control. The configuration affects
the cycling rate of the cooling stages by raising or lowering the
threshold that demand must build to in order to add or subtract
a stage of cooling. Normally this configuration should not re-
quire any tuning or adjustment. If there is an application where
the unit may be significantly oversized and there are indica-
tions of high compressor cycles, then the Capacity Threshold
Adjust (Z.GN) can be used to adjust the overall logic gain.
Normally this is set to 1.0, but the value can be adjusted from
0.1 to 10. As the value of Z.GN is increased, the cycling of
cooling stages will be slowed.
Compressor Lockout Temperature (MC.LO)
This configuration defines the outdoor air temperature below
which mechanical cooling is locked out.
Lead/Lag Operation? (LLAG)
This configuration selects the type of lead/lag compressor op-
eration for the unit. There are 3 choices: automatic, circuit A,
and circuit B.
0 = AUTOMATIC
If this configuration is set to “AUTOMATIC”, every time cool-
ing capacity drops to 0%, on the next call for cooling, the con-
trol will start up the first compressor on the circuit that did not
start on the previous cooling cycle.
1 = CIRCUIT A
If this configuration is set to “CIRCUIT A”, every time cooling
capacity drops to 0%, a circuit A compressor is always the first
to start on the next call for cooling.
2 = CIRCUIT B
If this configuration is set to “CIRCUIT B”, every time cooling
capacity drops to 0%, a circuit B compressor is always the first
to start on the next call for cooling.
NOTE: If the unit is configured for a Digital Scroll (Configura-
tion
COOL
DG.A1 = YES) or Minimum Load Valve (Config-
uration
COOL
MLV = ENABLE), then circuit A is always
the lead circuit regardless of the setting of this configuration.
This configuration must be set to 1 (CIRCUIT A) for size 30 to
60 units if an accessory low ambient operation Motormaster
®
V
control is installed on the unit.
If the unit is configured for the Humidi-MiZer
®
adaptive dehu-
midification system, then circuit B automatically becomes the lead
circuit when the unit enters into one of the Humidi-MiZer modes
ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT
COOL COOLING CONFIGURATION
A1.EN Enable Compressor A1 Enable/Disable CMPA1ENA Enable
A2.EN Enable Compressor A2 Enable/Disable CMPA2ENA Enable
A3.EN Enable Compressor A3 Enable/Disable CMPA3ENA Enable
B1.EN Enable Compressor B1 Enable/Disable CMPB1ENA Enable
B2.EN Enable Compressor B2 Enable/Disable CMPB2ENA Enable
B3.EN Enable Compressor B3 Enable/Disable CMPB3ENA Enable
CS.A1 CSB A1 Feedback Alarm Enable/Disable CSB_A1EN Enable
CS.A2 CSB A2 Feedback Alarm Enable/Disable CSB_A2EN Enable
CS.A3 CSB A3 Feedback Alarm Enable/Disable CSB_A3EN Enable
CS.B1 CSB B1 Feedback Alarm Enable/Disable CSB_B1EN Enable
CS.B2 CSB B2 Feedback Alarm Enable/Disable CSB_B2EN Enable
CS.B3 CSB B3 Feedback Alarm Enable/Disable CSB_B3EN Enable
Z.GN Capacity Threshold Adjst 0.1 to 10.0 Z_GAIN 1
MC.LO Compressor Lockout Temp –25 to 55 dF OATLCOMP 40
LLAG Lead/Lag Operation ? Yes/No LLENABLE No
M.M. Motor Master Control ? Yes/No MOTRMAST No
SCT.H Maximum Condenser Temp 100 to 150 dF SCT_MAX 115
SCT.L Minimum Condenser Temp 40 to 90 dF SCT_MIN 72
DG.A1 A1 is Digital Scroll Yes/No DIGCMPA1 No
MC.A1 A1 Min Digital Capacity 10 to 100 % MINCAPA1 50
DS.AP Dig Scroll Adjust Delta 0 to 100 % DSADJPCT 100
DS.AD Dig Scroll Adjust Delay 15 to 60 sec DSADJDLY 20
DS.RP Dig Scroll Reduce Delta 0 to 100 % DSREDPCT 6
DS.RD Dig Scroll Reduce Delay 15 to 60 sec DSREDDLY 30
DS.RO Dig Scroll Reduction OAT 70 to 120 dF DSREDOAT 95
DS.MO Dig Scroll Max Only OAT 70 to 120 dF DSMAXOAT 105
MLV Min Load Valve Enable Enable/Disable MLV_ENAB Disable
H.SST Hi SST Alert Delay Time 5 to 30 min HSSTTIME 10
RR.VF Rev Rotation Verified? Yes/No REVR_VER No
CS.HP Use CSBs for HPS Detect? Yes/No CSBHPDET Yes
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