Raypak XFIIRE H7-300B
The Raypak XFIIRE H7-300B is a condensing commercial hydronic boiler rated 300 MBTUH input and 289 MBTUH output at 96.5% AHRI thermal efficiency, with 7:1 turndown, Category IV venting and 38 gpm maximum flow per submittal 241854.
Key figures
- Max input
- 300 MBH
- Max CSA output
- 289 MBH
- AFUE
- —
- Min input
- —
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Raypak XFIIRE H7-300B in practice
The H7-300B is the 300 MBTUH size of Raypak's XFIIRE condensing line. Product submittal 241854 prints 300 MBTUH input, 289 MBTUH output and 96.5% AHRI thermal efficiency at 7:1 turndown, with 2" NPT water connections, a 4 in flue, a 4 in combustion-air intake, a 1" NPT gas connection, 411 lb approximate shipping weight and overall dimensions of 36.83 in by 45.34 in.
The line runs the VERSA IC control with cascade up to eight boilers and Raymote connectivity, and vents as a Category IV condensing appliance. The I&O manual is Raypak 241941, published in English and French, with submittal 241854 providing the rating table above.
Best suited to
- Commercial hydronic loads near 300 MBTUH input
- Plants standardising on Raypak's XFIIRE condensing platform
- Installations needing a compact footprint with up to 8-boiler cascade
Applicability and support
- Model number
- H7-300B
- Canadian availability
- unknown
- Production status
- current
- ROMA supplies
- Confirmed at consultation
- ROMA services
- Confirmed at consultation
- Warranty
- Not verified
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 Raypak. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input | 300 MBH | Rated input 300 MBTUH printed in the 241854 product submittal's AHRI ratings table. |
| Output | ||
| Output | 289 MBH | Rated output 289 MBTUH printed in the 241854 submittal. |
| Efficiency | ||
| AHRI thermal efficiency | 96.5 % | AHRI thermal efficiency 96.5% at full rate per the 241854 submittal and product page model data. |
| Venting and air | ||
| Venting category | Category IV | Condensing Category IV venting per the product page model data. |
| Flue outlet | 4 in | Flue diameter (PVC/CPVC) per the 241854 submittal. |
| Combustion air intake | 4 in | Air intake diameter per the 241854 submittal. |
| Physical and connections | ||
| Water connection | 2" NPT | Water inlet/outlet connection per the 241854 submittal's dimensions table. |
| Gas connection | 1" NPT | Gas connection (natural gas) per the 241854 submittal; the submittal notes propane models use a 1 in NPT connection. |
| Weight | 411 lb | Approximate shipping weight 411 lb printed in the 241854 submittal. |
| Width (A) | 36.83 in | Dimension A printed in the 241854 submittal's dimensions table. |
| Depth (B) | 45.34 in | Dimension B printed in the 241854 submittal's dimensions table. |
| Electrical | ||
| Electrical | 120/208 VAC, 1-phase | Operating voltage from the product page model data. |
| Operating limits and other | ||
| Turndown | 7:1 | Turndown printed for all XFIIRE sizes in the 241854 submittal and product page model data. |
| Maximum water flow | 38 GPM | Maximum water flow from the product page model data. |
| Cascade | Up to 8 boilers | VERSA IC control with cascade up to 8 boilers per the product page model data. |
| Fuel | Natural gas or propane | Natural gas or propane; the 241854 submittal prints propane connection sizes separately. |
Manuals
Alerts documented for this model
Frequently asked questions
What are the XFIIRE H7-300B ratings?
Product submittal 241854 prints 300 MBTUH input, 289 MBTUH output and 96.5% AHRI thermal efficiency at 7:1 turndown.
What size connections does the H7-300B use?
2" NPT water connections, a 1" NPT gas connection, a 4 in flue and a 4 in combustion-air intake, per the 241854 submittal.
Which manual covers the XFIIRE?
Raypak publishes I&O 241941 in English and 241941-FR in French, covering the H and WH 300B-1000B models.
Questions about the Raypak XFIIRE H7-300B?
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
- Raypak — official site · accessed September 9, 2026
- Raypak — XFIIRE hydronic boiler product page · accessed September 9, 2026
- Raypak — XFIIRE Type H Models 300B-1000B product submittal (241854) · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.