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Installation
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EN-RaychemHWATECOcontroller-IM-H57340 03/13
For controlling multiple HWAT circuits with the same
programming parameters (i.e. voltage, maintain
temperature, ambient temperature, economy tem-
perature), connect the heating cable output relay to
an external contactor coil(s).
N
ø1
HWAT-ECO internal switch
ø3
ø2
HWAT heating cable
HWAT heating cable
Braid/pipe
Two-pole with 30-mA ground-fault trip (208/240 Vac)
Two-pole with 30-mA ground-fault trip (208/240 Vac)
Three-pole
main CB
HWAT-ECO
internal
relay
Power connection
Panel energized light
*Contactor coil
(208 or 240 V)
Heating cable
End seal
Three-pole
main contactor
Ground
Line voltage
208 V or 240 V
Install contactor
manufacturer’s recommended
snubber circuit across the coil
*
Figure 8: Multiple HWAT circuits connection
Pipe temperature sensor (optional usage)
Installation of the pipe temperature sensor is option-
al. If installed, the HWAT-ECO provides low tempera-
ture alarm and high temperature cut-out.
The temperature sensor should be connected to a
single or master controller only. Connect both wires
