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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
F
ο
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