Pennco Boilers 16 Series 225,000 BTU Gas-Fired Steam Boiler - 1607HSID

Upgrade To Confident, Even Steam Heat With The Pennco 16 Series 1607HSID 225,000 BTU Cast‑Iron Gas Steam Boiler

Modernize your classic radiator system with the Pennco 16 Series 1607HSID—a gas‑fired, cast‑iron residential steam boiler that balances capacity, reliability, and straightforward service. With 82% AFUE, an integral draft diverter for a low overall height, and a factory vent damper to help reduce standby losses, this model delivers dependable steam for larger homes and multi‑radiator systems.

• Brand: Pennco
• MPN: 1607HSID (16 Series, Electronic Ignition)
• Type: Gas‑Fired, Cast‑Iron Residential Steam Boiler (Category I, Chimney Vent)
• Fuel: Natural Gas (Propane conversion kit available)
• Input: 225,000 BTU/h
• DOE Heating Capacity: 183,000 BTU/h
• Net IBR (Steam): 137,000 BTU/h (≈ 571 sq. ft. EDR)
• AFUE: 82%
• Steam Chest: 6" (promotes dry steam production)
• Steam Supply / Return Tappings: (2) 2‑1/2" NPT each
• Venting: Integral draft diverter with factory motorized vent damper; 7" flue to lined masonry or listed metal chimney
• Electrical: 120V, 60 Hz
• Controls & Safety: Electronic low‑water cut‑off (LWCO), pressure limit control, 15 psi ASME pop safety valve, glass water‑level gauge, steam pressure gauge
• Dimensions (W × H × D): 24‑1/4" × 36‑3/8" × 26‑1/2"
• Notes: Reduce input 4% per 1,000 ft above 2,000 ft elevation; add ~5‑1/2" to height for vent damper clearance
• Warranty: 10‑Year Limited heat exchanger (residential; see terms)

Built For Dry, Even Steam

A generous 6‑inch steam chest and large 2‑1/2‑inch tappings help separate water from steam and make it easier to pipe a proper header and equalizer—key steps to quiet radiators and balanced heat.

Fuel‑Saving Ignition & Vent Damper

Intermittent electronic ignition fires only on a call for heat, while the factory motorized vent damper helps reduce standby chimney losses compared with older standing‑pilot steam boilers.

Low‑Profile Draft Diverter

The integral draft diverter keeps overall height down—ideal for low‑ceiling basements and straightforward replacements where space is tight.

Proven Cast‑Iron Durability

Heavy‑duty cast‑iron sections with cast‑iron push nipples are designed for long service life in residential steam systems.

Installer‑Friendly Layout

Dual 2‑1/2" supply and return tappings, a common 7" flue, and clear access to controls simplify near‑boiler piping and annual service.