29
A
23 1/2
C
34 1/2
22 1/2
2 3/4
Bottom
Panel
25 3/8
22 1/2
17 1/4
17 7/8
28
B
19
22 1/2
24 7/8
15
23
1 1/4
Front Brace
BOTTOM VIEW
4 Knockouts
(both sides)
1
LEFT SIDE
RIGHT SIDE
3 1/4
Gas (Ø 1 5/8)
T-stat
(Ø 7/8)
Electric (Ø 7/8)
Vent pipe
(Ø 3”)
Cond. (Ø 1 1/16)
T-stat
(Ø 7/8)
Electric
(Ø 7/8)
Gas
(Ø 1 5/8)
Condensate
(Ø 1 1/16)
Vent pipe
(Ø 3”)
Combustion Air
FRONT VIEW
FLANGES
UPFLOW
CABINETS
‘B’ Cabinet 17 1/2 15 7/8 16 1/8
‘C’ Cabinet 21 19 3/8 19 5/8
24 1/2 22 7/8 23 1/8
NOTE:
Table 7
GAS INPUT
RATE
(BTUH)
TARGET CFM FOR SELECTED CIRCULATING AIR
45 50 55 60
CONSTANT
FULL
INPUT
MINIMUM
INPUT
FULL
INPUT
MINIMUM
INPUT
FULL
INPUT
MINIMUM
INPUT
FULL
INPUT
MINIMUM
INPUT
60,000 1,110 635 1,000 560 940 515 850 470 950
80,000 1,480 850 1,345 740 1,255 685 1,140 625 1,300
100,000 1,850 1,050 1,680 925 1,565 855 1,460 780 1,760
120,000 2,225 1,270 2,020 1,115 1,890 1,025 1,730 940 2,100
NOTE:
Modulating Furnace CFM Targets
Airflow Data
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