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KNOCKOUT
AUX GAS
INLET
Table 2—Dimensions (In Inches)
Size
A
D E Vent
050-BA
14^6 12"/,e 12”/,6
4
075-AA
17^2
1 5^
16
4
075-BA
M'k
15%
16
4
100-AA
M'b
15%
16 5
100-BA
17Ya
15%
16 5
125-AA 21 19%
19Ya
5
125-BA
21 19%
19% 5
150-BA
2 A'k
2 2%e
23 6
AIRFLOW
A78595
Fig. 2—Dimensional Drawing
Table 3—Ratings and Performance
Size
input
Btuh*
Capacity
Btuht*
Temp
Rise
Range
Heating
Cooling
Motor
HP&
Type
Approx
Shipping
Weight
Ext Static
Pressure
CFM
Ext Static
Pressure
CFM
050-BA
50,000 39,000t
45—75 0.50
600 0.5
800 73-SP 129
075-AA
75,000 58,000
70—100 0.12
630
— —
%0-SP 148
075-BA
45—75 0.50
895
0.5
1255 %-SP 157
100-AA
100,000 78,000t
70—100 0.20
850
— —
Vs-SP 163
100-BA
60—90 0.50
960
0.5 1630 %-PSC
170
125-AA
125,000 97,000t
70—100 0.20
1050
—
—
%-SP
187
125-AA
60—90 0.50
1195 0.5
1620 %-PSC 187
150-BA
150,000 116,000t
55—85 , 0.50
1535
0.5 2075
Ya-PSC 227
*The above gas input ratings are certified for eievations to 2000 ft. For elevations above 2000 ft, reduce input 4% for each 1000 ft above sea ievei.
tDetermined by U.S. Government tests.
tDeduct 1000 Btuh for Modei58DR. , ' ;
A73382
Fig. 3—Floor Opening for
Concrete Slab
This furnace is designed for a minimum continuous return
air temperature of 60 degrees F DB or an intermittent oper
ation down to 55 degrees F DB such as when used with a
thermostat night setback. Return air temperature must not
exceed a maximum of 85 degrees F DB.
A WARNING
Improper histaUation, adjustment, alteration, service,
maintenance, or use can cause carbon monoxide poison
ing, explosion, fire, electrical shock, or other conditions
which may cause personal injury or property damage.
Consult a qualified installer, service agency, local gas
supplier or your Distributor or Branch for information
or assistance. The qualified installer or agency must use
only factory authorized and listed kits or accessories
when modifying this product. A failure to adhere to this
warning can cause electrical shock, fire, personal injury,
or death.
Table 4—Opening Dimensions
Furnace Casing A B
Width Heat-Only Heat/Cool*
14%s
13%
19=/s 197,6
17%
167,6
19%
. 197,6
21 19% 19%
197,6
24%
237,6
19%
197,6
♦These dimensions appiy when a Model 28RC or RD Evaporator Coil cas
ing is to be installed.
FURNACE
■PLENUM
A73383
Fig. 4—Furnace on a Concrete Siab
WA
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