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3-90-07205R26_10/14
Low water cut-off control LWCO Wiring Instructions
TO BE UsEd whERE REqUiREd By LOCaL COdEs
Read and follow the instructions provided with the specific LWCO Control selected.
The LWCO Control will provide a set of contacts that are closed when water is present at the sensor. It will open the feed
motor circuit when a low water condition exist.
Depending on the model selected, a manual reset of the control may be required after a low water condition has existed.
•
waRNiNg: To prevent electrical shock or equipment damage, make sure power is turned off to the boiler.
• Locate the black wire from the wiring harness that connects to the feed motor. Fig. 1
• Separate the black wires at the ¼” push on connectors for the feed motor. Fig. 2 & Fig. 3
• The male connector will be on the wiring harness and the female connector will be on the feed motor wire. Fig. 3 &
Fig. 4.
Fig. 1
Fig. 2
Fig. 3
• Wire the LWCO control contacts in series with the feed motor on the pellet boiler. Fig. 4
• A separate power source may be required for the LWCO control. Read and follow the instructions provided with the
specific LWCO control selected.
• Consideration must be given to all local codes and regulations regarding the proper installation of the LWCO control
device and associated wiring.
Note: always verify proper operation of control after installation
Fig. 4
LWCO Control Contacts. (Open contact circuit
when low water condition exists.)
Summary of Contents for PB 105
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