IBC AHU Series, Installation & Operating Manual, Page: 48 / 75

Checking boiler / water heater settings Check
Ensure the water temperature to the heating coil is sufficient to meet the heating
demands of the space.
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3.2 Default settings
The following table shows the factory-default settings.
Default - Basic Settings
Heating Mode 1 stage
Cooling Mode 2 stage
Boiler Heating 1 stage and 2 stage
Temperature °F
Pump Enable On
Tankless Mode Off
3.3 Default fan speed settings
For fan speed defaults and ranges, see the table below:
AHU - Fan speed Operation
W1 Heating stage 1 = 600 CFM Range 300-800
W2 Heating stage 2 = 800 CFM Range 300 – 1000 (must be ≥ than heating stage 1)
Y1 Cooling stage 1 = 700 CFM Range 300 – 800
Y2 Cooling stage 2 = 1000 CFM Range 300-1000 (must be ≥ than cooling stage 1)
G Fan on speed = 400 CFM Range 150-1000
Note
For safety reasons, a switch is built into the door. The switch prevents the fan from
operating if the door is not installed. With the door removed, the appliance's control board
will remain powered, enabling programming of the mobile app.
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Section: Operation