Typical Flow Schematic - AEC TDH-6 Series Operation And Installation Manual

Note: The heat exchanger is optional, and the "Vent Valve" is also known as the "Blow-Off
Valve."
• Vent Valve - open for purge/closed for run/open for pump reverse.
• Return Valve - closed for purge/ open for run/ closed for pump reverse.
• Reservoir Tank - Open to atmosphere at all times, unless nitrogen blanket provisions are
present.
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Figure 3

Typical Flow Schematic

TDH-6 Series Hot Oil Large Temperature Control Units