28
SUPPLY AIR TEMPERATURE — The Supply Air Temper-
ature point displays the temperature of the air leaving the Fan
Coil, downstream of any cool or heat sources. Temperature is
measured by a 10K thermistor. This sensor is required for prop-
er function of the heat and cool algorithms.
Supply Air
Temperature:
Display Units
degrees F (degrees C)
Default Value
0.0
Display Range
–40.0 to 245.0
Network Access Read/Write
FAN MODE — The Fan Mode point displays the status of
the fan mode control.
Fan Mode:
Display Units
ASCII
Default Value
LOW
Display Range
OFF, ON, LOW,
MEDIUM, HIGH
Network Access Read Only
COOLING CAPACITY — When cooling is enabled, the
percent of cooling being delivered is determined by the follow-
ing formula for modulating (floating point) type heat:
% Output Capacity = ((SPT - SAT) / (SPT - 50 F)) * 100.
The percent of cooling delivered is determined by the fol-
lowing for two-position hot water or staged electric heat:
% Output Capacity = (# of active stages / Total stages) *
100.
The Cooling Capacity point is used to display the current
Cooling Capacity.
Cooling Capacity: Display Units
% output capacity
Default Value
0
Display Range
0 to 100
Network Access Read Only
HEATING CAPACITY — When heat is enabled, the per-
cent of heat being delivered is determined by the following for-
mula for modulating (floating point) type heat:
% Output Capacity = ((SAT - SPT) / (140 F - SPT)) * 100
The percent of heat delivered is determined by the follow-
ing for two-position hot water or staged electric heat:
% Output Capacity = (# of active stages / Total stages) *
100
The Heating Capacity point is used to display the current
Heating Capacity.
Heating Capacity: Display Units
% output capacity
Default Value
0
Display Range
0 to 100
Network Access Read Only
FILTER STATUS — The filter status point will be shown as
“CLEAN” until the run time of the fan exceeds the configured
Filter Timer Hours. When the user-configured Filter Timer
Hours has been exceeded, the Filter Status will display
“DIRTY” and a CCN alarm will be generated. Forcing the
point to “NORMAL” will clear the alarm condition and will re-
set the timer. The value of the timer is stored in EEPROM to
protect it in the event of a power failure. This is done periodi-
cally every 24 hours. The filter timer function only operates
if the configured filter timer value (FLTTMR) is a non-zero
number.
Filter Status:
Display Units
Discrete ASCII
Default Value
Clean
Display Range
Clean/Dirty
Network Access Read/Write
CHANGEOVER
MODE
—
The Changeover mode indi-
cates the allowable operating mode for two pipe heating/
cooling fan coil units. This point will display and follow the
value of the Changeover Status after a 5-minute delay. Upon a
transition of the Changeover Status, the fan coil controller will
terminate the previously active mode. This allows the water
valve to close if it was open. The Changeover Mode point will
echo the value of the Changeover Status point after the termi-
nation is complete. This point is NOT forcible (refer to the
Changeover Status point in the maintenance table).
Changeover
Mode:
Display Units
Discrete ASCII
Default Value
Heat
Display Range
Heat/Cool
Network Access Read Only
CONDENSATE PUMP — The Condensate Pump point is
used to monitor the input from a condensate pump overflow
switch. The Fan Coil controller will generate a CCN alarm
message when this input is on longer than a user-configured
time. The zone controller will generate a return to normal mes-
sage if the status of this point is off for more than 60 seconds.
When a condensate alarm is generated, all mechanical cool-
ing will immediately stop to prevent further condensate accu-
mulation, regardless of whether the space temperature set point
has been satisfied. The condensate overflow alarm will have no
affect on the fan speed control. Mechanical cooling will resume
normal operation after the condensate alarm has returned to
normal.
Condensate
Pump:
Display Units
Discrete ASCII
Default Value
Off
Display Range
Off/On
Network Access Read/Write
REMOTE START — The Remote Start point is the status of
the remote occupancy input. When the Remote Start point is
on, and the fan coil is not controlled by a Linkage Thermostat,
the fan coil will function in an occupied mode. When the Re-
mote Start point is off, the fan coil will revert to its own occu-
pancy schedule.
Remote Start:
Display Units
Discrete ASCII
Default Value
Off
Display Range
Off/On
Network Access Read/Write
SUPPLY FAN STATUS — Supply Fan Status will display
the supply fan status when a supply fan status sensing device
has been installed and configured.
Supply Fan Status:Display Units
Discrete ASCII
Default Value
No
Display Range
No/Yes
Network Access Read/Write
AIR QUALITY — The Air Quality point displays the indoor
air quality reading from a CO
2
sensor (or other type of air qual-
ity sensor) installed in the space. The CO
2
sensor is for moni-
toring and alarm purposes only. The Fan Coil controller can be
configured to generate an alarm when the zone controller is in
the occupied mode and the CO
2
level exceeds the high or low
limit.
Air Quality (ppm):Display units
None shown (parts per
million
implied)
Default Value
0
Display Range
0 to 5000
Network Access Read/Write
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→
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