B-2 · boiler
Boiler #2
Identical Johnston firetube — H-3131 / label J769068.
- Tier
- 1
- Consequence
- 4 CONFIRMED
- Probability
- —
- Risk
- —
- Scored
- 2026-10-24
- Consequence note
- B-1. Seasonal backup: 2nd boiler normally needed only below 0 F outside, depending on indoor RH. Losing one still hits the indoor environment hard, so 4 (Tier 1 floor).
Identity
- Serial
- H-3131
- S.O.
- 7408 #2
- Design
- Identical to Boiler #1 (H-3124 book)
Vessel / capacity
- Heating surface
- 1,000 ft²
- Normal water
- ≈ 1,200 gal
- MAWP
- 15S/30W
Burner motors
- Blower motor
- Baldor 7.5 HP (same class as #1)
- Compressor motor
- Baldor 1.5 HP