Cleaver-Brooks ClearFire CFLC Series, Operation And Maintenance Manual, Page: 226 / 290

Falcon Lead Lag Appendix E
E-18
7.4 - Enable Master
When all slaves have been enabled and configured, go to the Master host and under Lead Lag
Master Configuration change
Master Enable to ‘Enabled’.
7.5 - Outdoor Reset Configuration (hot water only)
Before the Outdoor Reset feature can be used, the outdoor temperature sensor must be connected
to a slave boiler on the lead lag network and configured.
Outdoor reset parameters are configured on the lead lag Master host . Starting from the Home page
on the Falcon Master host, go to the Lead Lag Master configuration group, then go to <Advanced
Settings>.
The example below shows how a given set of parameter values determines an outdoor reset curve.
In the example:
Minimum outdoor temperature = 0 deg F
CH setpoint = 180 deg F
Maximum outdoor temperature = 80 deg F
Low water temperature = 70 deg F
The end points (x
1
, y
1
) and (x
2
, y
2
) of the ODR curve are defined by (x
1
= MIn. OD Temp., y
1
=
Setpoint) and (x
2
= Max. OD Temp., y
2
=Low Water Temp,)
Once the lead lag Master host has been configured and enabled, an additional pushbutton <VIEW LEAD LAG>/
<VIEW INDIVIDUAL> will appear on the touchscreen home page of the Master and any configured slaves. On the
Master host boiler, this button toggles between two display menu paths: one for the individual boiler and one for the
lead lag system. On remaining slave boilers, <VIEW LEAD LAG> shows that boiler’s lead lag status and the active
service only.
!
Caution
After cloning parameters with the
PIM: If using boilers of different
sizes/models, it will be neces-
sary to reset the min/max modu-
lation speed settings.