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Heating Speed Set-ups
OH6FA072DV4
Furnace Motor Current
Draw (Amps/ / Watts) vs.
External Static Pressure (in W.C.)
Low Fire
Med Fire
High Fire
Static Pressure (Amps/Watts)
BTUH
60,000
72,000
90,000
Fan
Control
SW 1
Switch
Settings
Heating
CFM
Aprox. Rise
(F
0
)
Aprox. Rise
(F
0
)
Aprox. Rise
(F
0
)
0.2
0.5
3
-OFF
2
-OFF
1-OFF
740 75
o
1.1/98 1.8/173
3
-OFF
2
-OFF
1-ON
812 68
o
82
o
1.3/114 2.1/193
3
-
OFF
2
-ON
1-OFF
883 63
o
76
o
1.5/129 2.4/218
Factory
SW1 Switch
Settings
3
-
OFF
2
-ON
1-ON
968 57
o
69
o
86
o
1.7/148 2.4/223
3
-ON
2
-OFF
1-OFF
1054
63
o
79
o
1.9/173 2.7/246
3
-ON
2
-OFF
1-ON
1153
58
o
72
o
2.3/207 3.0/283
3
-ON
2
-ON
1-OFF
1267
66
o
2.7/247 3.5/332
3
-ON
2
-ON
1-ON
1424
58
o
3.4/315 4.3/409
= Recommended Heating Speed Setting
Figure 18-1: ECM blower motor speed chart