Zonex ZonexCommander, Installation Manual

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18
ZONEXCOMMANDER (PLUS) SEQUENCE OF OPERATION
Purge Mode
When a heat or cool call is satisfied or before changing modes, the
RMOD will go into a three-minute purge cycle. The call for heat or cool
will be removed, and the dampers will remain in their last position to
allow time for air to adjust to room temperature before going into
ventilation mode or changeover.
Fan Operation
Fan operation in the ZonexCommander (Plus) is controlled by the RMOD .
The fan jumper on RMOD allows for the option of fan continuous in
Occupied and intermittent in Unoccupied. Fan intermittent can be selected in
both Occupied and Unoccupied modes. Place fan jumper in desired position.
Ventilation
When no zone is calling for heat or cool, the dampers will open 50%. This
permits ventilation in all zones if the blower fan is on continuously.
COMMUNICATION FAILURE
If the RMOD cannot communicate with any of the thermostats, it will
control the HVAC unit based on return air temperature. The RMOD will
try to maintain 70°F heat and 75°F cool return air.
TEMPERATURE LIMITS AND STAGING
The RMOD monitors the leaving air temperature for staging and Hi /Low
145° F. Staging is based on the limit settings.
Gas Electric & Heat Pump
Example:
Gas Electric
Heating
W2 cut-in temperature is high limit minus 15° F (145° – 15° =
130° F). The W2 cut-out is cut-in plus 10° F (130° + 10° = 140° F).
Example:
Adjustable high limit = 145°
W2 Cut-in = 130° F (high limit minus fifteen)
W2 Cut-out = 140° F (cut-in plus ten)
W1 cut out = 145°
Heat Pump
Heating
– When the RMOD is configured for HP operation, the high
cut-out is automatically set to 121°.
• W2 energizes when the SA temperature is 88° or less after 4 minutes
of run time. W2 de-energizes when the SA temperature rises to 100°.
• Y2 energizes when the SA temperature is below 100° after 2 minutes
of run time and de-energizes above 115°.
• Y1 cuts out for 4 minutes when the SA temperature is above 120°.
TEMPERATURE LIMIT ADJUSTMENT
Low Limit –
1. Push DN button until display shows C.
2. Current setpoint will be displayed.
3. Push UP or DN button until desired setpoint is displayed.
4. Release button.
1. Push UP button until display shows H.
2. Current setpoint will be displayed.
3. Push UP or DN button until desired setpoint is displayed.
4. Release button.
operation. A shorted sensor or wiring will display low temperature, and
RLYCOM
The
RLYCOM
energizes and de-energizes the two SPDT relays based on
the schedule input on the Commander software. When the Command
Center sends an Occupied call, the RLYCOM energizes. When the
Command Center sends an Unoccupied call, the RLYCOM de-energizes.
When the red LED is illuminated, the RLYCOM is energized.
Supply and Return Air Temperature Display
System supply and return air temperatures can be read from each RMOD
and the REVIEW screen of the ZonexCommander (Plus) program. On the
REVIEW screen simply double-click on the Current Room Temperature of
address 1, 2, 3, 4. The address number is displayed on the left hand
column. The Read Sensors Screen will appear with the supply and return
temperatures for the specific RMOD .
Address: 1 = RMOD 92
2 = RMOD 93
3 = RMOD 94
4 = RMOD 95
SENDCOM sensor.
SENDCOM
On the ZonexCommander (Plus) system, the supply and return
temperatures from the stand-alone DIGICOM and DIGIHP thermostats
are provided by the SENDCOM . One SENDCOM is installed for each
stand-alone system. When assigning addresses for the stand-alone
thermostats and
SENDCOMs , you must start at #75 through #90
(5 through 20). The first 4 address numbers on the program are for
SENDCOMs associated with the 4 RMODs only. Pay particular attention
to this issue. Each RMOD has a SENDCOM associated with it. If 4
RMODs
are utilized with 1 Command Center, the information from those
SENDCOMs will be retrieved on the Zonex software from thermostat
locations 1, 2, 3, or 4.
NOTE: The RA and SA air sensors (P#
LAT
) must be installed for unit
To obtain this information from stand-alone equipment, include a
High Limit –
Manual changes are performed from the Toggle button on the RLYCOM .
an open sensor or wiring will display high temperature.
limit. The adjustable factory low limit is 45° F and the high limit is
Cooling Y2 cut-in temperature is low limit plus 10°F (45° + 10° = 55°F).
The Y2 cut-out is cut-in minus 8°F (55° – 8° = 47°F).
Adjustable low limit = 45°F
Y2 Cut-in = 55°F (low limit plus ten)
Y2 Cut-out = 47°F (cut-in minus eight)