Pennco Silver 1604HSID 112,000 BTU Cast Iron Natural Gas Boiler

Pennco Silver 1604HSID 112,000 BTU Cast Iron Natural Gas Steam Boiler

Pennco, part of ECR International, is recognized for manufacturing rugged, American-made steam and hydronic boilers. The Silver Series offers dependable, mid-efficiency boilers with user-focused features designed for reliable home heating.

• Brand: Pennco
• Model (MPN): 1604HSID
• Fuel Type: Natural Gas
• Input BTU: 112,000 MBH (~112,000 BTU/hr)
• Heating Capacity: 91 MBH, Net Steam = 68 MBH (≈283 sq ft radiator equivalent)
• AFUE Efficiency: 82%
• Heat Exchanger Material: Cast Iron sections with cast-iron push nipples
• Ignition Type: Electronic Intermittent Ignition
• Vent Diameter: 6″ inches
• Supply/Return Tappings: (2) 2½″ NPT
• Gas Inlet: ½″ NPT
• Electrical Requirements: 120 V AC, <12 A (15 A circuit)
• Dimensions (WxHxD): 14½″ × 36⅜″ × 26½″
• Weight: 368 lb
• Warranty: 10-year limited warranty on the heat exchanger and a 1-year limited warranty on other parts. This coverage is for the original purchaser from the date of installation and is subject to conditions like proper installation and maintenance. The warranty is non-transferable and does not cover labor costs for diagnosing, removing, or installing parts, or any consequential damages
• Manufactured: USA

Rugged Cast Iron Construction

Built with cast iron sections and matching push nipples, the boiler ensures uniform expansion and contraction, maintaining a strong watertight seal for long-term durability

Efficient Steam Heat Performance

With an 82% AFUE rating, the 1604HSID delivers consistent heating while minimizing fuel costs—ideal for families seeking efficiency and comfort

Reliable Safety Monitoring

Equipped with the CycleGard CG400 low‑water cut‑off featuring Intermittent Level Test, the system avoids false shutdowns caused by foam, enhancing safety and dependability

Compact and Easy Installation

An integral draft diverter, vent damper, and low-profile design streamline installation—even in tight utility spaces—while standard electrical and gas connections simplify service.

Steady Steam Output

A generous 6″ steam chest ensures solid steam-generating capacity, and 2½″ supply tappings allow for quick connection to steam systems and faster heating cycles

Additional Features:

• Glass water-level gauge
• Pressure limit control and 15 psi ASME safety valve
• ¾″ boiler drain valve and explosion-proof rollout switch
• 24 V automatic redundant gas valve with regulator and pilot filter
• Barometric draft damper increases efficiency
• Spill (blocked vent) switch for added safety
• Insulated jacket to improve heat retention
• Simplifies maintenance with front-mounted controls and easy-access components
• Compatible with both residential and light commercial steam systems