Installation & Service Manual
61
Parameter table
Table 11-1 This table lists boiler control module parameters and where to access them
Viewable and changeable control parameters
Temperature Units (°C/°F)
The control can be configured to display temperature in
either °C or °F. This parameter can be changed by accessing
parameter u01.
Set Set point Temperature
The Space Heat Demand Temperature can be adjusted UP or
DOWN by accessing parameter u02. This set point will limit
the maximum temperature on the outdoor reset curve. The
temperature range is 32°F to parameter P90.
Set tank DHW Tank Set point (if tank sensor present)
The DHW Set point Temperature can be adjusted UP or
DOWN by accessing parameter u03. Temperature range is
60°F to 185°F.
Set SH Set point at Minimum Outdoor Temperature
When the outdoor air temperature drops to 25°F, the
calculated set point will be at this setting (reference Table
11-3 on page 62). If the outdoor air temperature drops
further, the set point will continue to increase above this
setting. However, if SH set point is set lower than the
calculated set point, the water temperature will be limited by
the SH set point instead. This parameter can be changed by
the installer by accessing the P01. Temperature range is 68°F
to 250°F.
CAUTION
Before changing parameters, note the
settings so that the unit can be returned to
its original operating parameters.
Set SH Set point at Maximum Outdoor Temperature
When the outdoor air temperature rises to or above
70°F, the calculated set point will be at this setting. This
parameter can be changed by the installer by accessing
parameter P02. Temperature range is 68°F to parameter
P90.
Set Outdoor Shutdown Temperature
When the outdoor temperature rises above this point, the
control will block all SH demands (DHW demands will
still be active). These parameters can be changed by the
installer by accessing parameter P03. Temperature range
is 32°F to 104°F.
Change Auto Reset High Limit Temperature
The Auto Reset High Limit Temperature can be adjusted
UP or DOWN by accessing parameter P04. Temperature
range is 32°F to 200°F.
Change Boiler DHW Set point
The Boiler Tank Set point is the boiler set point for the
indirect tank. It can be adjusted UP or DOWN by accessing
parameter P10. Temperature range is 68°F to 190°F.
Change Maximum SH Set point
The Maximum Space Heat Demand Set point Temperature
can be adjusted UP or DOWN by accessing parameter P90.
Temperature range is 32°F to 190°F.
Code
Description
User Access
Installer Access
Display Modify Display Modify
u01
Temperature Units (°C/°F)
Yes
Yes
No
No
u02
Set SH Set point Temperature
Yes
Yes
No
No
u03
Set DHW Tank Set point
Yes
Yes
No
No
P01
Set SH Set point at Minimum Outdoor Temperature
No
No
Yes
Yes
P02
Set SH Set point at Maximum Outdoor Temperature
No
No
Yes
Yes
P03
Set Outdoor Shutdown Temperature
No
No
Yes
Yes
P04
Change Auto Reset High Limit Temperature
No
No
Yes
Yes
P10
Change Boiler DHW Set point Temperature
No
No
Yes
Yes
P90
Change Maximum SH Set point Temperature
No
No
Yes
Yes
11
Operating information
(continued)
