35
SYSTEM BYPASS EXISTS — This decision is used to tell
the linkage coordinator that an optional bypass controller does
or does not exist in this system. If this decision is set to
Yes
, the
linkage coordinator will attempt to communicate with a bypass
controller whose address must be one higher than the linkage
coordinator. If this decision is set to
No
, the linkage coordinator
will not attempt to communicate with a bypass controller.
System
Bypass Exists:
Range
Yes/No
Default Value
Yes
AST MODE VERIFICATION — This decision is used to tell
the linkage coordinator whether or not to qualify the mode sent
to it by comparing the air source supply air temperature value
to space temperature to ensure the air source is discharging an
appropriate supply air temperature for the current heat/cool
mode. If heating is required but the supply air temperature is
too cool for heating, the zone controller will act as if the air
source mode is cool rather than heat.
AST Mode
Verification:
Range
Yes/No
Default Value
No
AST SENSOR LOCATION — This decision is used to spec-
ify where the air source supply air temperature sensor is
located. It may be located at the air source, at the bypass con-
troller, or there may be an optional primary air temperature
sensor (PAT) installed in the primary air duct.
AST Sensor
Location:
Units
none
Range
0 = air source,
1 = local PAT,
2 = bypass
Default Value
0
CCN LINKAGE DATA — A zone controller configured as a
linkage coordinator has the ability to poll its linked zones and
collect the high, low or average value of any variable within its
linked zones. Once the high, low or average is determined, the
linkage coordinator can then transfer that value to a configured
bus number, element number and point name. Typically this
feature is used to determine a system’s highest indoor air qual-
ity reading.
In order to utilize this feature the CCN Variable Name being
collected from the linked zones must be supplied. The data
transfer rate must be specified and whether the high, low,
or average value is being determined. After the value has been
determined, a valid point name and communication bus
address to transfer the value to must be entered.
CCN Variable
Name:
Units
ASCII (8 Characters)
Range
A-Z, 0-9
Default Value
(blank)
CCN Function
Config:
Units
none
Range
0 = none, 1 = average,
2 = low, 3 = high
Default Value
3
Data Transfer
Rate:
Units
minutes
Range
1-15
Default Value
10
CCN Output
Point:
Units
ASCII (8 Characters)
Range
A-Z, 0-9
Default Value
(blank)
Destination Bus
Number:
Units
none
Range
0-239
Default Value
0
Destination
Element Number: Units
none
Range
0-239 (0 = disabled)
Default Value
0
TEMP SENSOR GROUPING — Each zone controller has
the capability to broadcast the associated space temperature
sensor’s data or listen to another controller’s sensor data over
the network. All controllers sharing the same sensor must be
installed on the same communication bus.
There are three configuration decisions that must be config-
ured in order to share sensors. The Temp Sensor Mode is used
to specify if a controller will use its own local sensor, broadcast
its local sensor, or listen to another controller’s sensor broad-
cast. The Listen Sensor Config is used to specify if the control-
ler is sharing the space temperature information only or the
space temperature and temperature offset slidebar information.
The Broadcast Element Number decision is used to specify
which controller number a zone will listen for when configured
to receive another controller’s broadcast.
Temp Sensor
Mode:
Units
none
Range
1 = Local Sensor,
2 = Broadcast, 3 = Listen
Default Value
1
Listen Sensor
Config:
Units
none
Range
1 = SPT, 2 = SPT and
offset
Default Value
1
Broadcast
Element Number: Units
None
Range
1-239
Default Value
1
Language Configuration Table —
The Language
Configuration table (LNGCONF) is used to select the display
language that will be seen on all user interfaces for this control-
ler. By default, the zone controller displays information in
English. To change to a second language display, set this
decision to
No
, download this table and then upload the zone
controller to see the factory-loaded second language. If a sec-
ond language is not available in this module, this decision will
be disregarded and information will continue to be displayed in
English.
English
Language:
Range
No/Yes
Default Value
Yes
Master (Linkage Coordinator) Service Configu-
ration Table —
The Master (Linkage Coordinator) Service
Configuration Table (MASTER) contains decisions used by
the linkage coordinator zone controller to determine the system
demand mode (heat/cool/vent). See Table 10.
COOL START AVERAGE DEMAND — This decision is
used to configure the minimum average cooling demand that
must be met before the system will start in cooling mode if no
mode is currently active.
NOTE: If there is also an average heating demand, and it is
also greater than its configured minimum average heating
demand (Heat Start Avg. Demand), then the mode with the
greater demand will be selected. If both heating and cooling
average demand are exactly the same then the mode with the
greatest individual zone demand will determine the starting
system mode.
Cool Start
Average Demand: Units
delta F (C)
Range
0.5 to 5.0
Default Value
0.7
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