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GENERAL CONFIGURATION SETTINGS
Those that alter the behavior or availability of configurable
items that are not in any other category. Those that are not
defined in other sections are listed in Table 8:
Table 7. System Operation Settings.
Parameter Comment
CH enable Enable, Disable
This parameter determines whether the CH loop is enabled or disabled. When disabled the demand
caused by the CH Sensor is ignored.
It may be disabled to turn it off temporarily, or because the application does not use this feature.
DHW enable Enable, Disable
This parameter determines whether the DHW loop is enabled or disabled. When disabled the
demand caused by the DHW sensor.
It may be disabled to turn it off temporarily, or because the application does not use this feature.
Lead Lag slave enable Still to be completely defined
Lead Lag Master enable Still to be completely defined
DHW priority vs LL
DHW priority vs CH
These parameters determine the priority of DHW versus other sources of calls-for-heat, when more
than one source is enabled. The LL source has a fixed priority versus the CH source: if an R7910 is
set up as a LL slave, and a LL master is talking on the Local bus, then the CH source is ignored.
DHW priority time mm:ss
This parameter determines whether a DHW demand can temporarily override the priority defined by
the DHW priority parameters. If it is non zero, then a DHW demand will take priority over both the LL
demand and the CH demand, for the specified time. If the DHW demand persists for longer than the
specified time then this override priority will expire and control will revert to the normal priority. The
override timer is reset when demand from the DHW source turns off. If normal DHW priority is
already higher than the one or both of the competing priorities, then this parameter has no effect
versus the competing priority (ies).
Annunciation enable Enable, Disable
This parameter determines whether the Annunciator feature of the Falcon is active. When disabled,
the CB Falcon will ignore the Annunciator inputs.
It may be disabled to turn it off temporarily, but more typically this will be turned off because the
application does not use this feature.
Annunciator Mode Programmable, Fixed
The parameter determines whether the Annunciator operates as fully programmable or as a fixed
input device See the Annunciator section for details.
Burner Switch On, Off
This parameter enables or disables the burner control. When it is off, the burner will not fire.
Table 8. General Configuration Settings.
Parameter Comment
Temperature Units F, C
This parameter determines whether the temperature is represented in units of Fahrenheit or Celsius
degrees.
Anti short cycle time mm:ss
Whenever the burner is turned off due to no demand, the anti short cycle timer is started and the
burner remains in a Standby Delay condition waiting for this time to expire. The anti short cycle time
does not apply, however, to recycle events such as loss of airflow or flame, it applies only to loss of
demand.
The anti short cycle time always inhibits a CH or LL demand. However, if a DHW demand occurs
then its priority is checked if it has the highest priority because of either:
• a non-zero value in the DHW priority timer
(which is loaded using the DHW priority time
parameter)
• due to the setting in both: DHW priority vs LL if Lead Lag Master enable is enabled AND DHW
priority vs CH if CH enable is enabled; then the anti short cycle delay is ignored and the DHW
demand is served.
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