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BLOWER PERFORMANCE SPECIFICATIONS
27
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 Minus(-) 999 1,439 56
Normal 830 1,195 50 Normal 1,110 1,598 50
Plus (+) 913 1,315 46 Plus (+) 1,221 1,758 46
Minus(-) 824 1,186 51 Minus(-) 1,067 1,536 52
Normal 915 1,318 46 Normal 1,185 1,706 47
Plus (+) 1,007 1,449 42 Plus (+) 1,303 1,876 43
Minus(-) 900 1,296 47 Minus(-) 1,134 1,633 49
Normal 1,000 1,440 42 Normal 1,260 1,814 44
Plus (+) 1,100 1,584 38 Plus (+) 1,386 1,996 40
Minus(-) 978 1,408 43 Minus(-) 1,202 1,730 46
Normal 1,085 1,562 39 Normal 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
CC
D
GCVC90704CX*
ACVC90704CX*
(Rise Range: 30 - 60°F)
A
B
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(-) 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