Aquastat IQ Option Card – Instruction Sheet
Page 3 of 7
INSTALLATION (continued)
Sensor clip
Sensor clip
installed
Sensor Installation Diagrams
Well and Sensor Installation
1.
Turn off all power and drain the boiler.
2.
Install sensor with well that was provided with the IQ Option Card. When using an existing well ensure that the
well specifications (Spud Size:1/2 inch NPT, Insertion depth: 3 inches & Insulation: 1-1/2 inches) match the
supplied well and will accommodate the supplied sensor clip.
3.
Prepare a properly sized and threaded tapping near the boiler supply water outlet. Choose a location (or existing
tappings) that allows the boiler water to circulate freely over the well.
4.
Sparingly coat the well threads with pipe dope.
5.
Install the well in the boiler tapping and tighten securely.
6.
Refill boiler and check for water leakage.
7.
Insert the sensor element into the well until it bottoms. See Sensor Installation diagram above for details
8.
Insert sensor clip to hold the sensor against the bottom of the well.
9.
Rout sensor wire and connect to Aquastat IQ Option Card
10.
Turn power ON.
11.
Set High Limit and High Limit Differential (see User Interface Section of this manual)
IMPORTANT
Best thermal response is obtained with a well that snugly fits the sensor. Insert the sensor until it rests against the
bottom of the well. Use a well of correct length and install sensor clip. If the well is not a snug fit on the sensor, use the
heat-conductive compound, p/n 8056220, (Honeywell p/n 120650)
IQ Option Card Installation
1. Turn off power to the boiler before installing
the option card
2. Select an unoccupied IQ Option Panel slot
and carefully insert pins on the IQ Option
Panel header into the connector on the
bottom of the option card.
NOTE
Use caution not to bend the pins.
3. Gently push the option card into the IQ
Option Panel option slot until it locks into
place. The IQ Option Panel will automatically
recognize the option card and establish
communication.
Insert IQ Option Card into selected slot
