Trane HORIZON ABDA - Typical HTC Circuit Diagram; Figure 35. The following diagram indicates a typical HTC circuit

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Figure 35. The following diagram indicates a typical HTC circuit
IPC
Circuit Module
Located in
Power Side of
Machine
Control Panel
HTC Input
120 vac Optical
Burner Module
Located in the
Burner Control
Panel
HTC Reset
Relay
Burner
Start Rel ay
HTC Stack
Temperature
Burner Safety String
HTC
Flame
Safeguard
(FSG)
A
B
A and B
represent the
FSG pins that
must be tied
to allow
burner start
and run