CONTROLLER MANUAL
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CONTROLLER MANUAL – SFC/SFB SERIES BOILERS
PARAMETER DESCRIPTION DEFAULT RANGE / OPTIONS
P033 Space Heating
Pump Post-
Purge (minutes)
1 0-15 minutes
P034 Space Heating
Pump post-
purge after DHW
tank operation
(minutes)
1 0-15 minutes
P035 Step Modulation 1 0 = Off
1 = On Space
Heating gradually
ramps up from min.
2 = Open Therm
P036 Space Heating
Anti-cycle
(minutes)
5 0-15 minutes
P050 Space Heating
Supply
Temperature /
Design Supply
Temperature
176°F / 80°C 50°F to 194°F /
10°C to 90°C
P052 Design Outdoor
Temperature
16°F / -9°C -22°F to 50°F /
-30°to 10°C
P053 Summer
Shutdown
Temperature
77°F/ 25°C 50°F – 85°F / 10°C
– 30°C
P056 Minimum supply
temperature
when using an
Open Therm
modulating
thermostat
86°F
30°C
50°F – 140°F
10°C – 60°C
Minimum supply
temperature
when using
an on/off
thermostat and
“smart outdoor
function” active
P059 Maximum User
set temperature
of Space
Heating
194°F/ 90°C 50°F to 194°F /
10°C to 90°C
P061** Smart Outdoor
reset - Slope for
increase and
decrease supply
setpoint
3 °C/100 seconds.
0 = function inactive
P070 Maximum DHW
capacity
100% 20%-100%