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SMART SYSTEM control module
F: Outdoor air reset (boiler only)
F5: Outdoor air shutdown
When the outdoor temperature rises above this point, the
control will block all SH demands (DHW demands will still
be active). This parameter can be changed by the user or the
installer by accessing parameter
F5
. The temperature range of
this parameter is 32°F (0°C) to 122°F (50°C). The default value
is 80°F (27°C).
F6: Outdoor air shutdown differential
The outdoor air shutdown differential parameter is the number
of degrees below parameter F5 the outdoor air temperature must
go before the unit will respond to a SH demand. This parameter
can be changed by the user or the installer by accessing
parameter
F6
. The temperature range of this parameter is 0°F
(0°C) to 90°F (50°C). The default value is 10°F (5°C).
F8: Boost temperature
If a SH demand lasts longer than the programmed time delay
setting (F9) and there have been no DHW demands, the control
will increase the SH set point by the amount in this parameter.
If the SH demand continues through another time period, the
set point will be increased again. This will continue until either
the SH demand ends, a maximum of 20 increases has occurred,
or the maximum set point has been reached. Once the SH
demand has been satisfied the set point will revert back to its
calculated setting. The boost temperature can be changed by
the installer by accessing parameter
F8
. The temperature range
of this parameter is 0°F (0°C) to 45°F (25°C). The default value
is 0°F (0°C). This feature will be active if this parameter is set to
anything other than 0°F (0°C).
F9: Boost time
The boost time parameter sets the amount of time that must
elapse with a SH demand before the water temperature set
point will be increased. This parameter can be changed by the
installer by accessing parameter
F9
. The time range for this
parameter is 1 minute to 250 minutes. The default value is 20
minutes.
G: Anti-cycling
G3: Ramp delay enable
When the ramp delay on/off parameter is active, the ramp
delay limits the boiler firing rate when a SH cycle has started.
There are six (6) limiting steps used to limit temperature
overshoot and short cycles, reference the
Copper-fin II Service
Manual.
This feature can be turned on or off depending on the
installation. This parameter can be changed by the installer by
accessing parameter
G3
. The control range of this parameter
is 0 = Off, 1 = Ramp Up Only, and 2 = Ramp Up and Ramp
Down. The default value is 0.
G4: Ramp delay settings
When ramp delay is active, there are up to six (6) limiting steps,
as described above in
Ramp Delay On/Off
. Each step has its own
time period and modulation limit. The installer can adjust these
settings by accessing parameter
G4
. The settings for each step
are displayed as follows:
G4 Ramp n
mm minutes ppp.p%
Where n is the number of the step, mm is the length of time in
that step, and ppp.p is the maximum firing rate allowed during
that step. Upon selecting this parameter, the ramp number n
will be flashing. Use the UP and DOWN keys to select the step
you wish to adjust. Use the NEXT and PREVIOUS keys to select
the setting you wish to adjust. Use the UP and DOWN keys to
adjust the value of each setting. NOTE THAT THE FIRING
RATE LIMIT IN STEP 6 WILL APPLY THROUGHOUT THE
ENTIRE CALL FOR HEAT. If 100% rate is required, the rate
limit in step 6 must be 100%. The default values are 2 minutes
at 50% for step 1, 1 minute at 80% for step 2, and 1 minute at
100% for steps 3 through 6.
I: Cascade
I2: Max. outlet set point
When the system supply sensor is connected, or the system
supply temperature is provided through ModBus, this parameter
determines the set point used by the individual boilers in a
Cascade. When a boiler is commanded to fire by the Leader
boiler, it will attempt to achieve this temperature at its outlet.
The Leader boiler will limit the modulation of the last boiler to
fire in order to hold the temperature at the system supply sensor
to the user set point. If any of the boiler outlet temperatures
reach the max. cascade set point, the boiler will then modulate
down on its own in order to keep its outlet temperature within
the max. cascade set point. Therefore, this parameter can be used
to limit the outlet temperatures of all the boilers in a Cascade.
Note that this parameter does not apply when the boiler is
heating an indirect DHW tank. This parameter is adjustable by
the installer by accessing parameter
I2
. The temperature range
for this parameter is 32°F (0°C) - 261°F (127°C). The default
max. cascade set point is 185°F (85°C).
User’s Information Manual
