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1 2 3 4 5
Figure 8
Ceiling mounted AHU ECM motor speed taps
Tap
Delay - Off Time(s)
Tap 1
Tap 2
Tap 3
Tap 4
Tap 5
Table 9
ECM motor speed taps
To Change the Fan Speed Tap:
At the motor connection plug, connect the green wire into the desired
Fan Speed Tap where indicated on the Blower Motor Plug.
The blower motor is equipped with a Time Delay Board (TDB). There
is a 90 second Fan-off delay when G is de-energized on the thermostat
terminal. This setting cannnot be changed.
Online Help Resources
Alternatively, please visit our Service & Support webpage to find FAQs, videos,
service bulletins, and more;
www.boschheatingcooling.com/service
cellphone to scan the code below.
Figure 9
Bosch BCA Series Air Handler - BTC 761703106 A (03.2023)
18
90
Default
90
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90
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90
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90
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or use your
24
30
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Installation Instructions
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