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 TABLE 4-6: Flow Estimates from Temperature Changes
Collector Loop
The flow rate probably is:
If the temperature change is:
Zero
Zero
Too high
Less than 5F
In the correct
Between 5F and 25F
range
Too low
More than 25F
Storage Loop (on Drainback or Closed-Loop Systems)
The flow rate probably is:
If the temperature change is:
Zero
Zero
Too high
Less than 2F
In the correct
Between 2F and 10F
range
Too low
More than 10F
4.3.6 Fluids.
Water Corrosiveness
Water can be corrosive for a number of reasons. The three most common causes
are:
o
low pH (acid water)
o
high dissolved oxygen content
o
high dissolved solids content
Cutting a small section of piping from an easily drained, easily repaired section of
piping is sometimes the best way to determine if the water is corrosive. Knowledge
of local conditions is a traditional way to know that aggressive water is causing a
problem. Laboratory analysis is another choice, especially when it is difficult to
determine what is causing the water to be corrosive.
TROUBLESHOOTING
126
4.3 TROUBLESHOOTING OPERATIONS
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