Installation Manual

22 of 32
© 2009 D 667 - 03/09
C1
Differential The differential for the snow
melting system.
Boil SENS = SUP
AUTO, 2 to 42°F
(AUTO, 1 to 23°C)
Default = AUTO
A
C1
Boiler Minimum The minimum temperature
allowed for the boiler target temperature.
Boil SENS ≠ NONE
OFF, 80 to 180°F
(OFF, 27 to 82°C)
Default = 140° (60°C)
C1
Fire Delay The time delay the control can expect
between the time the Boiler contact closes and
the boiler fi res.
Boil SENS = SUP
0:00 to 3:00 minutes
Default = 0:10 min
C1
Boiler Mass The thermal mass characteristics of
the boiler that is being used.
Boil SENS = SUP
LITE, MED, HEVY
Default = MED
A
Exercise The frequency with which the control
exercises the pumps and valves that are operated
by the control.
30 to 240 hours,
(in 10 hour steps)
Default = 70 hr
Item Field
Access
Level
Description
Range
Actual
Setting
Section LTD USER INST ADV
667 Adjust Menu (2 of 2)
667 Monitor Menu (1 of 3)
Outdoor High The highest recorded outdoor air temperature
since this item was last cleared.
-67 to 149°F
(-55 to 65°C)
Outdoor Low The lowest recorded outdoor air temperature
since this item was last cleared.
-67 to 149°F
(-55 to 65°C)
Slab High The highest recorded temperature at the slab sensor
since this item was last cleared.
-58 to 167°F
(-50 to 75°C)
Item Field Description
Range
Access
Level
LTD USER INST ADV