Specifications:
- Input: 500 MBTU/h
- Output: 425 MBTU/h
- IBR Net Rating: 361 MBTU/h
- Gas Connection Size: 1-1/4"
- Water Connection Size: 2"
- Firing Rate: 2-Stage
- ASME 160 psi working pressure heat exchanger
- ASME "H" Stamp
- Flanged water connections
- Glass-lined headers
- External header gaskets
- 75 psi ASME rated pressure relief valve
- 125 psi ASME rated pressure relief valve
- Flow switch
- Multiple operating gas valve/pressure regulators
- Temperature pressure gauge
- Manual "A" gas valve
- Intake air filter
- Multiple, removable burner trays
- Stainless steel burners
- Built-in draft fan for Category I or III vent systems
- Air pressure switch
- Burner site glass
- 24V control system
- 115/24V AC transformer
- Manual reset high limit
- Automatic reset high limit
- Electronic PID staging control with LCD and touchpad
- PC board for electrical connections
- External controller connections with selector switch
- Hot surface ignition
- On/Off toggle switch
- Pump time delay
- Diagnostic lights
- Less than 10 ppm NOx
| Appliance Surface |
Required Clearance From Combustible Material |
Suggested Service Access Clearances |
| Left Side |
1" |
24" |
| Right Side |
1" |
24" |
| Top |
1" |
12" |
| Back |
1" |
12" |
| Front |
1" |
36" |
| Vent |
Per venting systems supplier's instructions |