Preferred JC-22D2 User Manual

SDI-JC-22D2 rev. 11-1-21 page 14 of 22
Draft Alarm
Parameter
Default
Max.
Min.
Go
to: Menu >
Alarm
52 2.00 250.0 -250.0
Alarm
Setpoint
Draft Alarm will only activate when the boiler is released to modulate.
Alarm activates when Draft is more positive than this Setpoint for longer than the Alarm
Delay. Example: Draft =
-
0.10”, Alarm SP =
-
0.20”,
Alarm activates after Delay.
53 8 60 1
Alarm
Delay (se
conds)
Draft Alarm time delay, see Alarm Setpoint description.
Control Options
Parameter
Default
Max.
Min.
Go
to: Menu > Configure / Setup >
Control Options
55 Floating PID Floating Control Type
Options: PID
or
Floating
See pg 5
Compatibility
chart
56 Triac 4-20mA Triac Actuator or VSD Command Type
Options: Triac / 4-20mA / 0-20mA
With an external resistor, 0-20mA can drive 0-5V or 0-10V devices.
See pg 5
Compatibility
ch
art
57 None Pot. None Triac Feedback Type
Options: None / Potentiometer
See pg 5
Compatibility
chart
58
Disable
0
-
10V
Disable
Firing Rate Signal Type
Options: Disabled / 4-20mA / Potentiometer / 0-5V / 0-10V
Firing rate signal input is required for
the Feedforward control option.
59
Disable
Enable
Disable
F
iring Rate
Feedforward Option
Options: Disable / Enable
See pg 5
Compatibility
chart
Sequencing
Parameter
Default
Max.
Min.
Go
to: Menu > Configure / Setup >
Sequencing
65 15 60 1 Fan Start Delay Seconds
When the Operating Limits input makes: the draft damper starts to drive fully open and
the timer starts timing. The JC-22D2 Fan Start Delay Relay energizes at the end of the
delay and energizes the FSG Operating Limits input.
This delay allows the Draft damper to get enough open to prevent pressurizing the
boiler when the burner FD fan starts. This delay prevents a nuisance Draft Cutout
Lockout during startup.
6
6
15
60
0
D
raft Modulate Delay Seconds
This sets the delay after the fuel valves are opened before the draft damper can begin
to start modulating.
If the adjustable start position option is being used, the modulate delay must be set for at
least as long as the MTFI.
67 0 900 0 Cooldown Delay Seconds
This keeps the damper wide open for the selected seconds after a burner shutdown.
Note: T
he cooldown delay will only activate if the burner had been released to modulate
for at least 60 seconds.
68
Disable
Enable
Disable
Adjustable Start Position Option
Options: Disable / Enable
The JC-22D2 must have either a firing rate input or FSG purge position input to use the
adjustable start position option. See additional Code required Interlock, see page 11.
The Adj. Start parameters are in the next Menu screen.

Preferred JC-22D2 Specifications

General

Brand	Preferred
Model	JC-22D2
Category	Controller
Language	English