Technical Information

BLOWER PERFORMANCE SPECIFICATIONS
11
*CVM970804CN
A
Cooling Speed
(@ .1" - .8" w.c. ESP)
*CVM970804CN
A
Heating Speed
(@ .1" - .5" w.c. ESP; Rise Range: 35 - 65°F)
Tap Adjust
High-Stage
CFM
Low-Stage
CFM
Ta p A dj ust
High-Stage
CFM
Rise
(°F)
A
Minus 10% 753 500
A
Minus 10% 1,111 65
Normal 837 556 Normal 1,234 58
Plus 10% 921 612 Plus 10% 1,357 53
B
Minus 10% 920 643
C
Minus 10% 1,193 60
Normal 1,022 714 Normal 1,325 54
Plus 10% 1,124 785 Plus 10% 1,458 49
C
Minus 10% 1,085 754
D
Minus 10% 1,298 55
Normal 1,206 838 Normal 1,442 50
Plus 10% 1,327 922 Plus 10% 1,586 45
D
Minus 10% 1,328 892
D
Minus 10% 1,375 52
Normal 1,475 991 Normal 1,528 47
Plus 10% 1,623 1,090 Plus 10% 1,681 43
*CVM971005CNA
Cooling Speed
(@ .1" - .8" w.c. ESP)
*CVM971005CNA
Heating Speed
(@ .1" - .5" w.c. ESP; Rise Range: 35 - 65°F)
Ta p A dj ust
High-Stage
CFM
Low-Stage
CFM
Tap Adjust
High-Stage
CFM
Rise
(°F)
A
Minus 10% 706 472
A
Minus 10% 1,583 57
Normal 784 524 Normal 1,759 51
Plus 10% 862 576 Plus 10% 1,935 46
B
Minus 10% 970 670
B
Minus 10% 1,617 56
Normal 1,078 744 Normal 1,797 50
Plus 10% 1,186 818 Plus 10% 1,977 45
C
Minus 10% 1,249 834
C
Minus 10% 1,656 54
Normal 1,388 927 Normal 1,840 49
Plus 10% 1,527 1,020 Plus 10% 2,024 44
D
Minus 10% 1,589 1,067
D
Minus 10% 1,693 53
Normal 1,766 1,185 Normal 1,881 48
Plus 10% 1,943 1,304 Plus 10% 2,069 43
Notes
• All furnaces ship as high speed for cooling. Installer must adjust blower
speed as needed.
• For most jobs, about 400 CFM per ton when cooling is desirable.
•
CFM between .5" and .8" w.c. is tabulated for cooling purposes only.