Water Furnace SAH Series Installation Manual page 30

SAH AIR HANDLER INSTALLATION MANUAL
Blower Performance Data Option C cont.
Setting Blower Speed - Variable Speed
ECM
The ABC board's Yellow Config LED will flash the current
ECM blower speed selections for "G", low, and high
continuously with a short pause in between. The speeds
can also be confirmed with the AID Tool under the Setup/
ECM Setup screen. The Aux will not be flashed but can be
viewed in the AID Tool. The ECM blower motor speeds can
be field adjusted with or without using an AID Tool.
ECM Setup without an AID Tool
The blower speeds for "G", Low (Y1), High (Y2), and Aux
can be adjusted directly at the Aurora ABC board which
utilizes the push button (SW1) on the ABC board. This
procedure is outlined in the ECM Configuration Mode
portion of the Aurora 'Base' Control System section. The
Aux cannot be set manually without an AID Tool.
ECM Setup with an AID Tool
A much easier method utilizes the AID Tool to change
the airflow using the procedure below. First navigate to
the Setup screen and then select ECM Setup. This screen
displays the current ECM settings. It allows the technician
to enter the setup screens to change the ECM settings.
Change the highlighted item using the ◀ and ▶ buttons and
then press the ◙ button to select the item.
ECM Speed Info
Selecting YES will enter ECM
speed setup, while selecting NO
will return to the previous screen.
Blower Only Speed 3
Lo Compressor 6
Hi Compressor 9
Aux Heat 10
Want To Change?
Yes No
Option ◀▶ Enter ◙
ECM Speed Setup - These screens allow the technician to
select the "G", low, high, and auxiliary heat blower speed for
the ECM blower motor. Change the highlighted item using
the ▲ and ▼ buttons. Press the ◙ button to select the speed.
ECM Speed Info ECM Speed Info
1 1
▶ 2 ◀ G 2 G
3 ▶ 3 ◀ Lo
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
12 12
Option ◀▶ Enter ◙ Option ◀▶
After the auxiliary heat speed setting is selected the AID
Tool will automatically transfer back to the ECM Setup screen.
Cooling Airflow Setup - These screens allow the technician
to select -15%, -10%, -5%, None or +5%. Change the
adjustment percentage using the ▲ and ▼ buttons. Press
the ◙ button to save the change.
Cooling Airflow Setup
--- ECM Only ---
The airflow will be
adjusted by the chosen
amount in cooling mode.
Adjustment:
-15%
Want To Change?
Yes
Option ◀▶ Enter ◙
30
ECM Speed Info
1 1
2 G 2 G
3 Lo 3
4 4
5 5
▶ 6 ◀ Hi 6
7 7
8 8
9 9
10
▶10
11 11
12 12
Enter ◙ Option ◀▶ Enter ◙ Option ◀▶
Cooling Airflow Setup
--- ECM Only ---
The airflow will be
adjusted by the chosen
amount in cooling mode.
Adjustment:
-15%
No
Change ▼▲ Enter ◙
ECM Speed Info
Lo
Hi
◀ Aux
Enter ◙