Thermon TraceNet TCM 18 - Manual (Page 85)

HEATER
POWER
PIPE/SURFACE
TEMPERATURE
POWER
100%
20%
0%
-29 10
DEGREES CELSIUS
PIPE/SURFACE
TEMPERATURE
DEGREES
CELSIUS
20
10
0
Example D2 - Foundation Heave Protection - Proportional Control With Solid State
Relay Output
Cryogenic vessels and refrigerated rooms often utilize heating systems beneath to
prevent heaving due to the freezing of the soil/foundation base structure. A typical
heat tracing application of this type might require an operating tracing design as fol-
lows:
Internal Room Temperature: -27 ◦ F (15 ◦ C)
Minimum Maintain Temperature of Soil: 50 ◦ F (10 ◦ C)
Maximum Foundation Temperature: 80 ◦ F (27 ◦ C)
Heater Cable Type: Constant Wattage
81 PN 50316_0514