Model (1) |
Input MBH |
AHRI Certified Ratings |
Vent/Air Connection Inches |
Vent Material |
Max |
Min |
DOE Heating Capacity MBH |
Net Water Rating MBH |
Seasonal Efficiency AFUE % |
FS-80
Heat only |
80 |
8 |
75 |
65 |
95% |
2 or 3 |
PVC, CPVC, PP, SS |
FS-120 Heat only |
120 |
12 |
112 |
97 |
95% |
2 or 3 |
PVC, CPVC, PP, SS |
FS-155 Heat only |
155 |
15.5 |
144 |
125 |
95% |
3 |
PVC, CPVC, PP, SS |
FS-80 Combi |
80 |
8 |
75 |
65 |
95% |
2 or 3 |
PVC, CPVC, PP, SS |
FS-120 Combi |
120 |
12 |
112 |
97 |
95% |
2 or 3 |
PVC, CPVC, PP, SS |
FS-155 Combi |
155 |
15.5 |
144 |
125 |
95% |
3 |
PVC, CPVC, PP, SS |
(1) Natural gas field convertible to LP with optional kit.