IBC Technologies Inc.
1-844-432-8422 | www.ibcboiler.com
120-299E3 - August 23, 2023 - Released Document 4 of 5
Fan installation and Start Up
Fan Assembly and Installation
1. Install the venturi mixer onto the new fan with the provided screws and washers.
Warning
Ensure that the fan O-ring is seated in the groove of the fan when reassembling.
2. Install the new fan and fan gasket onto the heat exchanger lid.
3. Reinstall the fan assembly by following the removal steps backwards:
Note
SL40-399 models only:When reconnecting the female spade connections to the gas
valve, note the orientation of the wires. The blue wire connects to the upper connection,
and the brown wire connects to the lower connection.
a. from Removing the Fan Assembly - SL40-399 G3 on page 3 for the SL40-399 model, or
b. from Removing the Fan Assembly - EX400/500 on page 3 for the EX400/500 model.
Installation of Software v 2.00.3 EX 400 EX 500 Models
Note
Once you perform the software update, the boiler will calibrate the fan. You will hear the fan ramp
up and down several times during fan calibration. This will occur one time only.
1. At the boiler, remove active calls for heat. The home screen should show a "Standby" status.
2. Carefully insert the USB stick into one of the ports on the left-hand side of the controller.
3. On the controller, tap More > System Settings > Software Update.
4. Select the appropriate device (USB).
5. If you do not get a response, select Cancel and try again.
The controller checks if a software update is required. If required, the system prompts you for
permission to proceed.
6. Select Yes and OK.
7.
If you see a message "Could not mount flash device", select Cancel and try again. The controller
automatically restarts after loading the update, and the process takes a few minutes.
Note
Do not remove the USB before the software update has finished as this will cause the
update to fail.
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General