Pennco Silver 15B-175K 7 Zone 175,000 BTU Residential Cast Iron Natural Gas Boiler
- SKU #: PEN15B175K
- MPN #: 15B-175K
MSRP:
$4,268.00
$4,019.70
In Stock
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Pennco Silver 15B‑175K 7‑Section 175,000 BTU Residential Cast Iron Natural Gas Boiler (84% AFUE)
Need dependable whole‑home hydronic heat with straightforward service? The Pennco 15B‑175K is a non‑condensing, gas‑fired, cast iron hot‑water boiler designed for long life and easy maintenance. This 175,000 BTU (input) model uses an efficient intermittent electronic ignition and a motorized vent damper to cut standby losses, while the Honeywell control provides digital display and diagnostics to simplify setup and troubleshooting.
- Brand: Pennco
- MPN: 15B‑175K (15B Series K)
- Type: Gas‑Fired, Non‑Condensing Hot‑Water Boiler (Hydronic)
- Fuel: Natural Gas (LP convertible with kit)
- Input: 175,000 BTU/h
- DOE Heating Capacity: 147,000 BTU/h
- Net AHRI (Water): 128,000 BTU/h
- AFUE: 84%
- Ignition: Intermittent Electronic (spark) with Motorized Vent Damper
- Heat Exchanger: 7‑Section Cast Iron with Cast‑Iron Push Nipples
- Supply/Return Tappings: 1‑1/4" NPT
- Gas Inlet: 1/2" NPT (NG)
- Flue Collar: 7" dia. (Category I, chimney vent)
- Heating Water Content: 3.7 gallons
- Electrical: 120V, 60 Hz, 15A
- Dimensions (W × D × H): 21‑7/8" × 24‑1/8" × 32‑1/8"
- Controls: Internal operating control with digital display/diagnostics; built‑in LWCO; high‑limit temperature control
- Safety: ASME 30 psi relief valve; blocked‑vent spill switch; rollout switch
- Warranty: 20‑Year Limited Heat Exchanger (residential)
High Efficiency, Lower Operating Costs
With an 84% AFUE and intermittent electronic ignition, the 15B‑175K minimizes fuel waste. A motorized vent damper helps reduce standby losses up the chimney.
Proven Cast Iron Durability
The 15B Series uses a cast iron heat exchanger with cast‑iron push nipples for a long, leak‑resistant service life—ideal for baseboard and radiator systems.
Installer‑Friendly Controls & Diagnostics
An integrated Honeywell control with digital display and diagnostics streamlines setup and service. Built‑in low water cut‑off (LWCO) and high‑limit temperature control add protection.
Flexible Piping & Simple Venting
Left‑ or right‑side hydronic piping and electrical options make replacements easier. The low‑profile draft diverter reduces overall height, and the boiler vents as a Category I natural‑draft appliance to a lined masonry or listed metal chimney.
Zoning‑Ready Hydronic Heating
Pair the 15B‑175K with zone valves or circulators (not included) to serve multiple heating zones—great for larger homes or additions. The 1‑1/4" supply/return tappings support common residential manifold layouts.