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Input
Output
MBH
kW
MBH
60B3
17.6
57
80B3
23.4
76
80C4
23.4
76
100C5
29.3
95
100D5
29.3
95
120D5
35.2
106.5
Table 18
Ratings & Physical / Electrical Data
Annual Fuel Utilization Efficiency (AFUE) numbers are determined in accordance with DOE Test procedures.
National Electrical Code (NFPA-70-latest edition) and all local codes.
The furnace shall be installed so that the electrical components are protected from water.
Optional Switch Positions
DIP Switch (SW)
S1-1
ON
OFF
ON
Table 19
W2 Delay
* The factory default settings
DIP Switch (SW)
S2-1
OFF
ON
OFF
ON
Table 20
Heat Off Delay
* The factory default settings
DIP Switch (SW)
S2-3
OFF
ON
OFF
ON
Table 21
Cool Off Delay
* The factory default settings
Bosch 96% AFUE Condensing Gas Furnace - BTC 770503101 J (06.2023)
Nominal
MAX. Unit
Airflow
Amps
kW
CFM
16.7
1200
8
22.3
1200
8
22.3
1600
7.8
27.8
2000
11.5
27.8
2000
10.5
31.2
2000
10.5
NOMINAL
(MINUTES)
S1-2
OFF
10
ON
AUTO
ON
20
NOMINAL
(SECONDS)
S2-2
OFF
90*
OFF
120
ON
150
ON
180
NOMINAL
(SECONDS)
S2-4
OFF
60*
OFF
90
ON
120
ON
150
Air Temp. Rise
Over-Current
AFUE
° F
° C
96
30-60
17-33
96
35-65
19-36
96
35-65
19-36
96
35-65
19-36
96
35-65
19-36
95
40-70
22-39
Installation Instructions
Max.
Max. Outlet Air Temp
Min. Wire Size
Protection
(AWG) @ 75 ft
Amps
15
14
160
15
14
165
15
14
165
20
14
165
20
14
165
20
14
170
° F
° C
71
74
74
74
74
77
| 41
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