21
Settings (4 of 5)
Parameter
Range
Description
SYSTEM MENU
CONDENSATE
SENSOR
Off or On
Default: On
Select if a condensate return sensor is installed .
STEAM
ESTABLISHED
100 to 220 °F
(38 .0 to 104 .5 °C)
Default: 180 °F, (82 .0°C)
Set the condensate return temperature at which steam reaches the furthest radiator .
AUTO COOL DOWN
Off or On
Default: On
Select if the radiators should cool down before starting the next heating cycle .
COOL DOWN
DIFFERENTIAL
5 to 110°F
(3 .0 to 61 .0°C)
Default: 25°F (14 .0°C)
Select the amount of temperature drop on the condensate return sensor below the
steam established temperature before starting the next heating cycle .
MINIMUM ON TIME
0 to 50 minutes
Default: 0 minutes
Select the minimum run time to establish steam if a condensate return sensor is
not installed .
AUXILIARY SENSOR
Off, Indoor, Flue
Select the type of sensor connected to the auxiliary sensor input .
Indoor: Measures ambient room temperature .
Flue: Measures the boiler flue vent temperature .
EARLY START
Off or On
Default: Off
The control learns the heat up rate of the building and advances the heating before
the occupied period . Requires an indoor sensor and schedule .
BOOST
Off or On
Default: Off
Select the extra run time after the unoccupied period ends to recover the temperature
of the building . Requires a schedule and an indoor sensor is not installed .
BOOST TIME
20 to 480 minutes
Default: 120 minutes
Select the maximum Boost extra run time after a unoccupied period .
SMART SETBACK
Off or On
Default: Off
Select if the scheduled unoccupied period is skipped if the boiler run time percent
is more than 85% of the heating cycle .
PRESSURE SENSOR
Off or On
Default: Off
Select if a pressure sensor is installed .
PRESSURE TARGET
0 .0 to 15 .0 psi
(0 to 105 kPa)
When staging two boilers, select the pressure to turn off the second boiler .
STAGE 2
DIFFERENTIAL
0 .1 to 5 .0 psi
(7 to 35 kPa)
When staging two boilers, select the pressure differential to turn on the second boiler .
STAGE DELAY
0 .0 to 40 .0 minutes
Select the time delay when staging the second boiler .
COMBUSTION AIR
DELAY
0 to 360 seconds
Default: 0 seconds
Set the time that the combustion air damper is open before turning on the first boiler .
BOILER ROTATION
Off or On
Default: Off
Select if equal runtime rotation is used on the boilers .
OUTDOOR SENSOR
Control, Internet
Default: Control
Set the source of the outdoor air sensor reading . Internet is available when connected
to the Internet through Ethernet or Wi-Fi .
