| AFUE Rating | : | 83 % |
| BTU Rating | : | 52000 Btu/hr |
| Capacity | : | 1.5 gal |
| Chimney/Breeching/Vent Size | : | 4 in Dia x 20 ft H |
| Connection Type | : | 3/4 in NPT |
| Dimensions | : | 4 in Dia x 45-3/8 in H x 10 in W |
| Fuel Type | : | Natural Gas |
| Ignition Type | : | Electronic Spark |
| Material | : | Cast-Iron |
| Model | : | GWA-052 |
| Net BTU Rating | : | 37000 Btu/hr |
| Series | : | GWA Series |
| Vent Type | : | Atmospheric (Chimney) |
Williamson Gas Fired Water Boiler, GWA Series, Model: GWA-052, 83 % AFUE, 52000 Btu/hr BTU, 1.5 gal Capacity, 3/4 in NPT Connection, Natural Gas Fuel, Atmospheric (Chimney) Vent, Chimney/Breeching/Vent Size: 4 in Dia x 20 ft H, Electronic Spark Ignition, Net BTU Rating: 37000 Btu/hr, Cast-Iron, Dimensions: 4 in Dia x 45-3/8 in H x 10 in W
- Factory tested
- Easy service - one-piece access door, all controls in easy reach
- High efficiency - flue baffles, stainless steel burners, automatic vent damper
- Cast iron sections with built-in air separator
- Insulated heavy gauge steel jacket
- Vertical draft hood
- Electrical junction box
- 24 VAC combination gas valve
- Combination relay receptacle and 40 V-A transformer and plug-in circulator relay
- Taco 007 circulator pump
- High temperature limit control
- 30 lbf/sq-in ASME relief valve
- Combination pressure temperature gauge
- Limited lifetime warranty on heat exchanger, one-year limited warranty on parts
- Standing pilot