10
Furnace
For a furnace, install the unit into the control box
where the main power feed enters the furnace. Keep
the leads as short as possible and make sure there
are no 90 degree bends.
To install the unit onto a furnace:
1. Disconnect power to the furnace at the AC
disconnect, junction box or circuit breaker feeding
the furnace.
2. Remove the panel covering the control box where
the main power feed enters the furnace.
3. Wire the black leads to the hot lugs on the furnace
and the white lead to the ground lug.
4. Connect the wires for the outputs as per the
instructions in Figure 2A or 2B.
5. Re-attach the panel on the furnace.
6. Re-connect power to the furnace.
7. After ashing for the 3 minute initialization period,
the LED on the surge protective device should be
steadily illuminated green at this time.
8. If the LBK10 ashes with a pause, consult the “LED
Indicator Guide” for cause and appropriate action.
Connecting Outputs (Fig.2)
1. Connect the wires for the outputs in order to re-
move power from condensing unit contactor
(Operational Output) and/or activate an external alarm
if the surge protector has been compromised (Alarm
Output).
2. The brown wire is common.
3. Connect the gray wire as the Operational Output
and the blue wire as the Alarm Output.
