User Guide

Page 3 of 8
INSTALLATION (continued)
Probe Installation
Install the probe above the minimum safe water level, determined by the boiler manufacturer’s literature. This may be 1.
in a tapping on the boiler, in the boiler supply, or return piping. (See Fig. 3)
Make sure the probe extends into the boiler cavity or piping to make contact with the boiler water.2.
Make sure the exposed portion of the stainless steel probe is a minimum of 1/4” from any grounding surface inside the 3.
boiler to prevent the probe from shorting. (See Fig. 2)
Tighten the LWCO into the process connection using wrenching fl ats on bushing. Make sure not to cross-thread. Only 4.
use pipe thread sealant.
IQ Option Card Installation
Turn off power to the boiler before installing the op-1.
tion card
Select an unoccupied IQ Option Panel slot and care-2.
fully insert pins on the IQ Option Panel header into
the connector on the bottom of the option card.
Gently push the option card into the IQ Option Panel 3.
option slot until it locks into place. The IQ Option
Panel will automatically recognize the option card
and establish communication after power is turned
back on.
Wiring
Using wiring harness provided in probe kit, connect the female quick disconnect to the “Probe” terminal on the LWCO 1.
IQ Option Card. See fi gure 4.
Route wire to probe location. Take care to not damage insulation and avoid running wire over sharp edges and 2.
corners.
Remove the outer probe locknut taking care to not turn the second locknut. See Figure 4 for location. 3.
Place ring terminal over the electrode. 4.
Secure outer locknut to complete wiring of the probe.5.
Test the system as indicated below.6.
Fig. 4 Wiring
Shock hazard. Disconnect power source before •
servicing. Serious injury or death could result.
Use caution not to bend the pins•
Insert IQ Option Card into selected slot