12
INSTALLATION (cont.)
Warning Signal Connection
(Output Signal Terminal L+ and L-)
The controller is equipped with a warning signal output relay type (Form C, normal
open dry contact) which can be used to monitor the failure condition.
Relay contactor is closed when the following condition has occurred:
a. Tank full
b. Temperature sensor fails
The relay output contactor is rated 2 A at 30 VDC or 2 A at 30 VAC (resistive load)
and it is compatible with various warning devices such as alarm speaker, light
indicators, and etc.
Connecting Warning Signal From Controller
1. Remove service panel from the rear of the unit.
2. Squeeze the inner latches and push out the black cap from inside the panel.
3. Use recommended warning signal wire size from 16 AWG to 26 AWG for a
solid wire, or 16 AWG to 22 AWG for a stranded wire with ring terminal for #6
stud size.
4. Connect warning device to terminal L+ and L- according to its polarities.
Cap
Latch
Input
Signal
Terminals
Output
Signal
Terminals
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