© 2006
GE ECM
by Regal-Beloit
- 26 -
Indoor Blower Motors
v0.2
Heating Airflow Selection
Installation
-
Option 1
o
Typically the heating airflow is factory set for the furnace the motor is
supplied with to operate at the middle of the heat rise range
o
Field adjustment will modify the heat rise for unique installations.
-
Option 2
o
The heating airflow can be factory set to operate for a unique furnace
model (i.e. 60, 80, 100, 120K BTU input)
o
Each setting is unique to a specific size furnace
o
CAUTION – Any field adjustment will significantly alter the systems
performance.
Example of Airflow Table
-
First stage heating airflow is typically a preset percentage of the selected
heating airflow setting.
Benefits
-
Option 1
o
The heat rise can be easily optimized at the time of installation.
-
Option 2
o
One ECM model can be used with up to 4 different size furnaces.
Never assume the factory setting is the correct setting without checking the
installation manual first. Always check the temperature rise and confirm that it
is within the manufacturers specifications on every job.
2nd Stage
CFM
1
2
3
4
5
6
7
8
Rise (°F)
A
550
0
0
51
B
600
1
0
47
C
650
0
1
43
D
700
1
1
40
Heating Airflow Selection
Dip Switch Number
Temp Rise Range (30 - 60°F)