13
PC Program Instructions
6
Parameters
(continued)
Parameter
2EB
sets the pump delay time for the boiler pump
after an over-temperature condition. This time is adjustable
from 0 minutes to 40 minutes. The default time is 2 minutes.
If the boiler pump or HW pump have not been active in a 24
hour period, the SMART TOUCH will activate the
appropriate pump for a programmed time to prevent
jamming. The boiler pump time can be changed by accessing
parameter
2EC
. This time is adjustable from 0 minutes to 40
minutes. The default time is 20 seconds. The HW pump time
can be changed by accessing parameter
2ED
. This time is
adjustable from 0 minutes to 40 minutes. The default time is
20 seconds.
Set 4: Menu values
Set 4 contains parameters that can be accessed from the boiler
display. The parameters in this set control the basic operation
of the boiler. To access these parameters, click on
Parameters
at the top of the Main Screen window (FIG. 6-1, page 10),
then click on
Set 4: Menu Values
on the pull-down menu
(FIG. 6-6).
Figure 6-5
Parameter Set 2E
Figure 6-6
Parameter Set 4A
Space Heating (SH) user setpoint (User Setp)
The SH User Setpoint sets the water temperature setpoint for
fixed operation or the maximum temperature setpoint when the
outdoor air sensor is used. This parameter can be changed by
accessing parameter
4AA
. The temperature range of this
parameter is 50°F to 190°F. The default value is 125°F.
SH min user setpoint (Min User Setp)
The SH Minimum User Setpoint sets the minimum water
temperature setpoint that can be used for space heating
operation. The user or installer will not be able to program the
control with a lower SH setpoint. This parameter can be
changed by accessing parameter
4AB
. The temperature range of
this parameter is 0°F to 190°F. The default value is 70°F.
SH max user setpoint (Max User Setp)
The SH Maximum User Setpoint sets the maximum water
temperature setpoint that can be used for space heating. The
user or installer will not be able to program the control with a
higher SH setpoint. This parameter can be changed by accessing
parameter
4AC
. The temperature range of this parameter is 0°F
to 190°F. The default value is 190°F.
SH turn-off differential (SH off df)
The SH Turn-off Differential sets how many degrees above the
Max. Cascade setpoint (parameter
4AY
) the outlet temperature
has to go before the boiler will shut off. This parameter can be
changed by accessing parameter
4AD
. The temperature range of
this parameter is 0°F to 86°F. The default value is 10°F.
