CleaverBrooks CFC-1000 User Manual

CB FALCON
81 750-265
Modulation
Fig. 31. Modulation.
Modulation Sensor
When the burner demand is off and no burners are firing then,
for either Lead Outlet or Slave Outlet Average, the lead boiler's
outlet temperature is used to monitor for burner demand.
HEADER
LL MODULATION TEMPERATURE
BURNER ON/OFF
PID
ModBus
LL MASTER’S
SETPOINT
OFF
HYSTERESIS
P-GAIN
DEMAND
MASTER ACTIVE SERVICE
MASTER HEAT DEMAND
FROST PROTECTION RATE
LL MASTER FROST PROTECTION
TO
SLAVES
FROM
SLAVES
RATE
LL SLAVE FIRING RATE
LL SLAVE DEMAND
RATE
ALLOCATION
STAGING
MASTER SERVICE
STATUS
ALL SLAVES KNOW WHAT
THE MASTER IS DOING.
USED FOR
PUMP CONTROL
SLAVE COMMAND
A UNIQUE COMMAND
IS SENT TO EACH
LL SLAVE
SLAVE STATUS
EACH SLAVE TELLS LL
MASTER WHAT
IT IS DOING
LL MODULATION BACKUP SENSOR
DISABLE
LEAD OUTLET
OUTLET AVERAGE
ON
HYSTERESIS
I-GAIN
D-GAIN
Table 39. Modulation Sensor Parameters.
Parameter Comment
LL Modulation sensor S10
The LL master's modulation sensor uses the S10 sensor wired at J10 terminal 7 and 8.
If the LL master is enabled and its sensor is faulty then an alert will be issued.
LL Modulation backup sensor Disable, Lead Outlet, Slave Outlet Average
If the sensor chosen by the LL Modulation sensor is faulty then the backup sensor provided
here may be used.
If Disable is selected then no backup will be used.
If Lead Outlet is selected then the outlet temperature of the lead boiler will be used as the
backup during firing.
If Slave Outlet Average is selected then average of the outlet temperatures of all slave
boilers that are firing will be used as a backup.

CleaverBrooks CFC-1000 Specifications

General

Brand	CleaverBrooks
Model	CFC-1000
Category	Boiler
Language	English