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AEC/Appllcatlon Engineering
Figure 4
Typical TDH Piping Diagram, Dual Heaters
SAFETY
PRESSURE
SWITCH
STARTUP VENT LINE
PRESSURE
GAUGE
DELIVERY
THERMO
I
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__ _J
!
BY-PASS
1
~¥
RELIEF VALVE
I
l_ _
"Y"
STRAINER
I .
PUMP
I
I
_ _ _ _
·
J~
- -
SY!e1:
~~=G-E
·
1
RETUR~-¥
-0--
I ~Rv~v"eN
~
__
J
STARTUlPVENTLINE
.
HEAT
~
Page 22
--
·•
WATER
SUPPLY
EXCHANGER
1.
j
SOLENOID
J'L"
IV\
~:_,VALVE
~
I
--- /+
~
i
--~K
'
•
l
VALVE
VALVE
~-
NOTE: HEAT EXCHANGER IS OPTIONAL
• OPEN FOR FILUCLOSED FOR RUN/CLOSED FOR PUMP REVERSE
- CLOSED FOR FILUCLOSED FOR RUN/OPEN FOR PUMP REVERSE
-·-·•··---
TOH TrueTemp"' Serles Hot 011 Temperature Control Units
•
•
•
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