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AEC/Appllcatlon Engineering
DELIVERY
Figure 3
TOH Piping Diagram, Single Heater
STARTUP VENT LINE
PRESSURE
SWITCH
i
~/.>
SAFETY
1·
o,
THERMO
"---,,J
PRESSURE
GAUGE
Cf~)
___
r - 1 _
-<-·-·-------------'·~
BLOW-OFF'*
VALVE
1
IMM.
~-~ ~,-v<J-
1 1
'
HEATER
K
·~._,,,,
'
----~'
""l
CIRCULATING
BYPASS
.V
RELIEF VALVE
MOTO~-
\
(M)~J·~1
~_/
\_y
I
"Y"STRAINER
RETU~
I
RETURN
--4<VALVE
&
HEAT
w
EXCHANGER
SOLENOID
·-.VALVE
/
->--
WATER
SUPPLY
I
;·~:--<)
'
' . _j
CHECK
_\
_
8
j
VALVE
NOTE: HEAT EXCHANGER IS OPTIONAL
PUMP
I
· - - - ' i ' -
1
CHECK
VALVE
VENT
~
•
VALVE
SYSTEM PURGE
VENT LINE
STARTUP VENT LINE
I
A
I
/.\
:
'
1_' . __jv\
•
- - - · - · ! > - - - -
• OPEN FOR FILL/CLOSED FOR RUN/CLOSED FOR PUMP REVERSE
- CLOSED FOR FILUCLOSED FOR RUN/OPEN FOR PUMP REVERSE
TOH TrueTemp"' Serles Hot 011 Temperature Control Units
Page 21
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