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Figure 2 SIM connections - SL 26-260 G3, SL 40-399 G3 series boilers
1. Disconnect the power to the boiler and close the gas shut-off valve.
All the module’s connector plugs, except the ignition lead, have retaining clips.
2. Note the position of the retaining clips for each plug. To unplug the connectors, you must press
down on the retaining clips and then properly release them.
3. Unplug all the connectors from the module.
4. Check that the wire connections are still solid and secure.
5. To remove the existing module, hold it firmly in place as you unscrew the two mounting screws.
Keep the screws.
6. Position the new module, so that the mounting holes align.
7. Insert the screws and lightly tighten to secure the module in place.
8. Plug the connectors into their respective sockets (see image above), ensuring that the retaining
clips click into place properly. Each wire connector plug should fit snugly into a socket.
9. Plug connectors into their respective sockets, ensuring that the retaining clips click into place
properly.
Each wiring connector should fit snugly into a socket.
Note that the Ignition Module adapter cable part # 200-115 (included in this kit) is not used on G3
Series boilers, and can be discarded. Similarly, a G3 will already have a SIM Ignition Cable 200-154,
so the ignition cable provided with this kit can be set aside as a spare part.
10. Leaving the gas off, restore power to the boiler.
11. If the ignitor was replaced, pressurize the combustion chamber for a leak test around the ignitor
gasket with an approved leak test solution. To do this:
Remove any call for heat.
From the
Main Menu
, go to
Diagnostics
>
Fan Operation
.
Press the
Vent Test On/Off
button to drive the fan into high speed.
When complete, press On/Off again, and wipe off the excess solution.