HTV/HTD/HTH SERIES Heat Controller, Inc.
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ELECTRICAL - LOW VOLTAGE WIRING
Figure 14 illustrates piping for two-stage
solenoid valves. Review Figures 11 - 13
for wiring of stage one valve. Stage two
valve should be wired between terminal “Y2”
(ECM board) and terminal “C”. NOTE:
When EWT is below 50°F, 2 gpm per ton is
required.
Figure 12: AVM Valve Wiring
Figure 13: Taco EBV Valve Wiring
Figure 14: Two-Stage Piping
Figure 13: Taco SBV Valve Wiring
Taco SBV Valve
Note: Shut-off valves, strainers and
other required components not shown
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