246 ST 3000 Release 300 and SFC Model STS103 User’s Manual 6/08

B.1 Possible Solutions/Methods, Continued

Steam heating,

continued See Figure B-8 and B-9 for typical piping installations. Table B-1

summarizes the temperature ranges for the various freeze protection

systems.

Table B-1 Temperature Range of Freeze Protection Systems

Operating
Temperature
Range
Liquid Seals
Ethylene
Glycol Dibutyl-
Phthalate
Steam Heating
No Seals
Trap CTV
Valve
Electric Heat
No
Control Thermo-
stated
ο Fο

C

34
20
50
100
200
225
325
600
36
30
10
38
93
106
163
315
Note: Broken lines indicate areas of caution.
Diaphragm
Seals

Continued on next page