Filter
Top Products
4
19-7/8
19-7/8
24-5/8
24-5/8
56-1/16
56-1/16
20-9/32
20-9/32
21-17/32
21-17/32
21-29/32
21-29/32
21-15/16
21-15/16
19-3/16
19-3/16
23-7/16
23-7/16
28-15/32
28-15/32
3-17/32
3-17/32
4-11/16
4-11/16
4-11/16
4-11/16
3-17/32
3-17/32
EXHAUST
EXHAUST
VENT
VENT
17-13/16
17-13/16
COMBUSTION
COMBUSTION
AIR
AIR
INTAKE
INTAKE
21-11/32
21-11/32
7/8 Diameter
7/8 Diameter
1-19/32
1-19/32
1-19/32
1-19/32
EXHAUST
EXHAUST
VENT
VENT
1-11/16
1-11/16
COMBUSTION
COMBUSTION
AIR
AIR
INTAKE
INTAKE
3-17/32
3-17/32
24-3/4
24-3/4
20-1/16
20-1/16
18-1/2
18-1/2
18-1/2
18-1/2
(W/ Coil Box)
(W/ Coil Box)
75-1/4
75-1/4
SIDE RETURN
SIDE RETURN
KNOCKOUTS
KNOCKOUTS
SIDE RETURN
SIDE RETURN
KNOCKOUTS
KNOCKOUTS
1-1/2
1-1/2
21-15/16
21-15/16
1-19/32
1-19/32
Cooling
Cooling
Coil
Coil
Box
Box
(W/O Coil Box)
(W/O Coil Box)
Table 2. Shipping Weight
Table 3. Furnace Specifications/Airflow Data
GENERAL
Note: Data is for Operation with Filter.
* Factory Wired Cooling Tap
** Factory Wired Heating Tap
Furnace Specifications / Airflow Data
Furnace Furnace Temp. Recommended
Input Output Rise @ A/C
Btuh Btuh .3"WC °F CFM CFM CFM CFM CFM Ton
High* 1660 1599 1544 1474 1410 4
Med-High 1512 1467 1416 1363 1304 3
Med-Low 1340 1304 1261 1217 1158 2.-1/2
60,000 54,000 35 - 65 Low** 1176 1142 1108 1025 966 2
High* 1660 1599 1544 1474 1410 4
Med-High 1512 1467 1416 1363 1304 3
Med-Low** 1340 1304 1261 1217 1158 2.-1/2
80,000 72,000 35 - 65 Low 1176 1142 1108 1025 966 2
0.4 0.5Furnace
Model No.
Motor
HP
Motor
Speed
External Static Pressure ( Inches Water Column)
0.1 0.2 0.3
M3 RL-060
M3 RL-080
1/2
1/2
Top Return Knockouts
Figure 1. Furnace Dimensions
Top Return Opening
(BWT Models)
* May include suffix - T
Furnace Model
Shipping
Weight
(
lbs
)
M3RL 060A AW 150
M3RL 060A BW* 170
M3RL 080A AW 155
M3RL 080A BW* 175
Top View
(AW and BW Models)
1.000
1.000
21.000
12.000