BLOWER PERFORMANCE SPECIFICATIONS
21
1. Units are shipped without filter(s). CFM in chart is without filter(s).
2. All furnaces shipped with heating speed set at "B" and cooling speed set at "D". Installer should adjust blower speed
as needed. The first task is to determine the proper aiflow for the cooling system.
3. For most cooling applications, about 400 CFM per ton is desirable.
4. The chart is for information only. For satisfactory operation, external static pressure not to exceed value shown on
rating plate.
5. Do not operate above 0.5" w.c. ESP in heating mode. Operating between 0.5" w.c. and 0.8" w.c. is tabulated for cooling
purposes only.
6. * Motor CFM minimum.
GCVC9/ACVC9 Heating Speed Charts
Heating
Speed
Tap
Adjust
Tap
Low Stage
CFM
at .1" - .5" w.c.
ESP
High Stage
CFM
at .1" - .5" w.c.
ESP
Rise
(°F)
Heating
Speed
Tap
Adjust
Tap
Low Stage
CFM
at .1" - .5" w.c.
ESP
High Stage
CFM
at .1" - .5" w.c.
ESP
Rise
(°F)
Minus(-)
747
1,076
56
M inus(-)
999
1,439
56
Normal
830
1,195
50
Norm al
1,110
1,598
50
Plus (+)
913
1,315
46
Plus (+)
1,221
1,758
46
Minus(-)
824
1,186
51
M inus(-)
1,067
1,536
52
Normal
915
1,318
46
Norm al
1,185
1,706
47
Plus (+)
1,007
1,449
42
Plus (+)
1,303
1,876
43
Minus(-)
900
1,296
47
M inus(-)
1,134
1,633
49
Normal
1,000
1,440
42
Norm al
1,260
1,814
44
Plus (+)
1,100
1,584
38
Plus (+)
1,386
1,996
40
Minus(-)
978
1,408
43
M inus(-)
1,202
1,730
46
Normal
1,085
1,562
39
Norm al
1,335
1,922
42
Plus (+)
1,194
1,719
35
Plus (+)
1,469
2,115
38
D
GCVC90905DX*
ACVC90905DX*
(Rise Range: 30 - 60°F)
A
B
C
C
D
GCV C90704CX*
ACVC90704CX*
(Rise Range: 30 - 60°F)
A
B
Heating
Speed
Tap
Adjust
Tap
Low Stage
CFM
at .1" - .5" w.c.
E SP
High Stage
CFM
at .1" - .5" w.c.
E SP
Rise
(°F)
Minus(-)
1,093
1,583
63
Normal
1,214
1,759
56
Plus (+)
1,335
1,935
51
Minus(-)
1,106
1,612
61
Normal
1,229
1,791
55
Plus (+)
1,352
1,970
50
Minus(-)
1,166
1,654
60
Normal
1,296
1,838
54
Plus (+)
1,426
2,022
49
Minus(-)
1,172
1,690
59
Normal
1,302
1,878
53
Plus (+)
1,432
2,066
48
D
GCVC91155DX*
(Rise Range: 40 - 70°F)
A
B
C
