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Replacing a SIM in the SL 'G1' and G2 series boilers
The supplied USB contains the latest software that we recommend using to update - although not essential
- the above models with the latest features. Note that you cannot update the older 5-button controller boards
with a USB. For additional information on the ignition system, its normal operation, and troubleshooting,
refer to the boiler’s Installation and Operation manual.
Figure 1 SIM connections - SL G1 and G2 series boilers
Boilers with a 5-button controller running software version 3.11.4 can use this kit. All 5-button boards
running version 3.11.3 or earlier should use the replacement Fenwal Ignition module, IBC part 240-004. The
software version is displayed for three seconds upon powering up the board. You can also find it in the
Installer Setup menu under System Information. If no such directory exists, the software version is older
and you should use the Fenwal replacement module.
The P-270 SIM kit replaces the Fenwal or Capable Controls ignition module for all IBC SL series 'G1' (SL
20-115, SL 28-160, SL 30-175, SL 35-199, SL 45-260, and SL 80-399) and G2-series boilers. Yo do not need
to use the supplied USB software update for these models. However, the update provides the latest
features and improvements. For information on how to perform a software update, see Software update.
Note that you cannot update the 5-button control boards with a USB.
1. Disconnect the power to the boiler and close the gas shut-off valve.
This SIM kit can replace an IBC Fenwal Ignition module, a Capable Controls module, or an existing
SIM.
If replacing an existing SIM, 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.