Hearthstone Quality Home Heating Products, Inc.
Tucson DX/ST Model 8702
26
ST Model Optional Thermostat Connection Installation
Optional thermostat is installed and the thermostat wires are run to the Tucson 8702 ST properly. Remove the
Modesty Panel for proper access to the wire connections.
1. Remove the Modesty Panel using a Phillips screwdriver to remove the 2 screws that mount the panel to
the stove. Retain the screws for reinstallation.
2. Using a 5/16” wrench, remove the nut on the IPI/CPI switch and pull the switch through the hole in the
panel.
3. Follow the wires from the ON/OFF/T-STAT switch back to their connections. Mark and disconnect the
wires where they connect to the blue and white wires on the wire harness. The yellow, purple and black
wires stay connected to the switch.
4. The panel is now free to pull away from the stove.
Photo 15 – Modesty Panel Removal
Use the photo below for reference when making the following connections. (The thermostat wire should already
have female connectors attached to the two wires.)
1. Locate the black wire that shipped in the accessory box with your Tucson. Attach one Male end on the
black wire to one female connector on the thermostat wire.
2. Find the yellow wire that is unconnected coming from the ON/OFF/T-stat switch. Connect the Male
terminal on the yellow wire to the Female connector on the second thermostat wire.
3. Slide the T-tap terminal over the purple wire. Use a pair of pliers to crimp it in place on the purple wire.
(When crimping the T-tap down ensure it cuts through the purple wire’s insulation and into the wire
creating a connection)
4. Connect the Male terminal from the black wire (connected to the thermostat) wire to the end of the T-tap
terminal, as shown in photo below.
5. Reconnect the blue and white wires and reinstall the modesty panel.
Photo 16 – Optional Thermostat Connection Detail
(switch removed for clarity)
Male to Male Wire
Connector
T-Tap Terminal
Thermostat Wire
Switch
