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11
63-4309—2
Recommended
Variable Name
Variable Label
Functional Description/Program Options
Value
Heat Hysteresis
HEAT_HYSTERESIS
Sets the number of degrees above the
2
°
F
Warm-up Heat Setpoint, where the warm-up
heat sensor must be before the control disables
morning warm-up.
Range = 0 to 10
°
F.
Night Setback Type
SETBACK_TYPE
Programmable:
0 = No night setback function.
1 = Program night setback setpoint and
heat until Return Air Temperature
exceeds Night Setback Heat Setpoint.
2 = Heat until Space Temperature exceeds
Night Setback Heat Setpoint.
Low Pressure Start Type
LPSTART_TYPE
0 = Energize compressor and liquid line
1
solenoid valve at the same time.
1 = Energize liquid line solenoid valve,
wait for low pressure switch input
signal and then energize compressor.
2 = Energize compressor, wait for
low pressure switch input signal and
then energize liquid line solenoid
valve.
Low Pressure Start Delay
LPSTART_DELAY
Control will allow low pressure at compressor
30 or 60
input for this duration before alarming and de-
seconds
energizing compressor. One second accuracy
programmable, 0-255 seconds.
Condenser/Compressor
CND_COMP_DEL
The minimum time delay from when the
0
Delay
condenser pump is turned on until the com-
pressor is allowed to turn on. This variable
is programmable from 1 to 255 seconds.
Programming to 0 disables this feature. When
this variable is programmed, the digital outputs
COOL1 and CNDPMP must be configured.
Condenser Fail Delay
COND_DELAY
Delay from Condenser Pump start until Proof
10 seconds
of Condenser Water Flow Failure is checked.
Valid when condenser pump is configured.
One second accuracy, 0-255 seconds.
Periodic Pump Out Rate
P_PO_TIME
Control will pump out compressor at this
30 minutes
rate if not sequenced on due to a call
for cooling and if the low pressure switch indi-
cates pressure above the low pressure cutout
setting. One minute accuracy, 1-255 minutes.
A value of 0 disables this function.
Pump Out Duration
PO_TIME
Maximum time for compressor pump out.
30 seconds
Alarm if time exceeds programmed value.
One second accuracy, 0-255 seconds.
0 disables this feature.
Lead/Lag Compressor
LEAD_LAG_ENABLE
0 = Disable lead/lag compressor control.
0
Control
1 = Enable lead/lag compressor control.
Free Cooling Delay
FRE_CL_DEL
Time delay after the free cooling valve
60 seconds
digital input becomes inactive before
mechanical cooling is allowed to energize.
Range = 0-200 seconds. See Economizer
Operation p.33 for more information.
CONFIGURATION PARAMETERS (continued)
PM7600B
PM7600B INPUT AND OUTPUT OPTIONS
Содержание PM7600B
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