Low Water Cutoff (Lwco) Capacitor Integrity Test; Low Water Cutoff (Lwco) - Capacitor Electrical Short Test - Watts Aerco Innovation 800 User Manual

Innovation Hot Water Hot Water Boiler User Manual

6.11 LOW WATER CUTOFF (LWCO) CAPACITOR INTEGRITY TEST

If the LWCO capacitor has failed, order the LWCO capacitor
and consult the Innovation 24 Month Maintenance Technical Instructions Document TID-0094 for
replacement instructions.
The LWCO capacitor should be tested for electrical shorts every 12 months and replaced,
then tested, every 24 months. The LWCO capacitor integrity test consists of two parts as
described in the next two sections. The first procedure explains how to test for electrical
shorting of the LWCO probe capacitor, while the second procedure instructs how to perform
the standard Low Water Cutoff test using the C-More controls.
On the Innovation series, the LWCO probe is located on the heat exchanger body on the left side
of the unit. Refer to Figure 6-11 for an illustration of the LWCO probe assembly and its
installation.
PARTIAL LEFT SIDE VIEW
Figure 6-11: LWCO Probe Location (INN 1350 Shown)

6.11.1 Low Water Cutoff (LWCO) - Capacitor Electrical Short Test

This test determines if there is an electrical short between the LWCO capacitor and the heat
exchanger. Perform the capacitor electrical short test as described below.
1. Turn OFF AC power to the unit.
High voltages are used to power these units and so it is required
that power applied to these units is removed first before performing
the procedure described in this instruction. Serious personal injury
or death may occur if this warning is not observed.
Page 86 of 174
11/15/2016
CHAPTER 6 – MAINTENANCE
Terminal
LWCO Capacitor Electrical Short Test
--WARNING! -
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Phone: 800-526-0288
- INTERNATIONAL
Kit, P/N 69126, from AERCO,
LWCO
Probe
LWCO Probe
Plastic Acorn Nut
Capacitor Assembly
(Covered By Large
Shrink Tubing)
Connector
(To Shell Harness)
OMM-0120_0A
GF-128-I