Pennco 15C-9D
The Pennco 15C-9D is the larger 15C with eight burners: 299 MBH input with 252 MBH heating capacity and a 219 MBH net AHRI water rating at 84% AFUE, 14.4 gallons of water content and a 7-inch flue.
Key figures
- Max input
- 299 MBH
- Max CSA output
- —
- AFUE
- 84 %
- Min input
- —
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Pennco 15C-9D in practice
The Pennco 15C-9D is a large cast-iron gas water boiler rated at 299 MBH input. Its row in the 15C sell sheet prints 252 MBH heating capacity, a 219 MBH net AHRI water rating and 84% AFUE, with 8 burners, 14.4 gallons of water content, a 7-inch flue and an approximate weight of 616 lb in a 30-3/4"-wide cabinet.
The boiler is fully assembled with an insulated jacket and ships with a 30 lb ASME relief valve at 50 psi MAWP, a pressure gauge and a 3/4-inch drain valve. Options include propane conversion kits and a central heating pump, and the official documents page publishes a Modupak multiple-boiler installation manual alongside the Series 3 and Series 4 IOMs, which is the configuration to follow when 15C boilers are installed in multiples.
Boilers.ca documents this size at model level from the sell sheet and links the published IOMs. Gas, venting and electrical work belongs with a licensed contractor. No official Canadian-sales statement was found, so canadianStatus stays 'unknown'.
Best suited to
- 299 MBH large residential or light-commercial loads
- Multi-boiler plants using the published Modupak manual
- Buildings with an existing chimney sized for a 7-inch flue
Applicability and support
- Model number
- 15C-9D
- Canadian availability
- unknown
- Production status
- current
- ROMA supplies
- Confirmed at consultation
- ROMA services
- Confirmed at consultation
- Warranty
- Series terms
Where ROMA provides on-site service
On-site service is currently offered in Greater Vancouver, BC, including Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, West Vancouver, New Westminster, Port Coquitlam, Port Moody, Delta, Langley, Maple Ridge, Abbotsford, Chilliwack, White Rock, Pitt Meadows, Tsawwassen, Anmore, Lions Bay, Belcarra, Bowen Island, Mission. Everything else on this site is reference information you can use anywhere in Canada.
Specifications
Published specifications
Values as published by Pennco. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input | 299 MBH | Input per the 15C sell sheet ratings table. |
| Output | ||
| Heating capacity | 252 MBH | Heating capacity per the 15C sell sheet ratings table. |
| Net AHRI water rating | 219 MBH | Net AHRI water rating per the 15C sell sheet; the table prints its own piping and pickup allowance note. |
| Efficiency | ||
| Efficiency (AFUE) | 84 % | 84% AFUE per the 15C sell sheet ratings table. |
| Domestic hot water | ||
| Domestic hot water | Heating-only boiler — domestic hot water comes from a separate indirect tank or water heater | |
| Venting and air | ||
| Flue connection | 7" | Flue connection per the 15C sell sheet ratings table. |
| Venting | Chimney vented | The sell sheet lists a 30 lb ASME relief valve (MAWP 50 psi); see the IOM for venting details. |
| Physical and connections | ||
| Water content | 14.4 gal | Water content per the 15C sell sheet ratings table. |
| Approx. shipping weight | 616 lb | Approximate weight per the 15C sell sheet ratings table. |
| Dimensions (width × height × depth) | 30-3/4" × 36-3/8" × 26-1/2" | 15C dimension values; height and depth are common across the line. |
| Operating limits and other | ||
| Burners | 8 count | Burner count per the 15C sell sheet ratings table. |
| Control | Fully assembled boiler with insulated jacket, pressure gauge and drain valve | Options include propane conversion kits and a central heating pump (Taco or Less Pump); a Modupak multiple-boiler installation manual is published. |
| Fuel | Natural gas (propane conversion kits available) | The sell sheet lists propane conversion kits among the options. |
Manuals
Alerts documented for this model
None documented yet.
Frequently asked questions
What are the Pennco 15C-9D's ratings?
299 MBH input, 252 MBH heating capacity, a 219 MBH net AHRI water rating and 84% AFUE with 8 burners and a 7-inch flue per the 15C sell sheet.
Can the 15C-9D be used in a multiple-boiler plant?
Yes — the official documents page publishes a Multiple Boiler Installation Manual (Modupak) for the 15C series, which is the configuration document for multi-boiler installations.
Questions about the Pennco 15C-9D?
Describe what the boiler is doing and get a straight answer about the next step.
On-site service in Greater Vancouver, BC. ROMA lists “Open 7 days” on its site; call to confirm same-day availability.
Sources and verification
- Pennco — Pennco 15C product page · accessed September 9, 2026
- Pennco 15C Sell Sheet 08-19-25 (PDF) · accessed September 9, 2026
- Pennco 15C Series 4 IOM Rev. A (PDF) · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.