Raypak XVers L H7-406L
The Raypak XVers L H7-406L is a condensing firetube commercial hydronic boiler rated 399 MBTUH input and 391 MBTUH output at 98% AHRI thermal efficiency, with 10:1 turndown, Category IV venting and a maximum water flow of 73 gpm per the 241896 submittal.
Key figures
- Max input
- 399 MBH
- Max CSA output
- 391 MBH
- AFUE
- —
- Min input
- —
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Raypak XVers L H7-406L in practice
The H7-406L is the 399 MBTUH size of the XVers L, the condensing firetube line Raypak markets as the 399-850 MBTUH expansion of the XVers family. Product submittal 241896 prints 399 MBTUH input, 391 MBTUH output, 98% AHRI thermal efficiency and 10:1 turndown for this size, with 2" NPT water connections, a 4 in flue, a 4 in combustion-air intake, a 1" NPT gas connection, 547 lb operating weight and 13 gal water content.
Like the rest of the XVers L range it runs on the VERSA IC control with cascade capability up to eight boilers and Raymote connectivity, vents as a Category IV condensing appliance, and carries ASME construction with indoor/outdoor rating per the product page model data. The I&O manual is Raypak 241782, published in English and French, and the rating data above comes from submittal 241896.
Best suited to
- Commercial hydronic loads near 399 MBTUH input
- Plants standardising on the XVers L condensing firetube platform
- Retrofit or new builds needing Category IV condensing venting and up to 8-boiler cascade
Applicability and support
- Model number
- H7-406L
- 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 | 399 MBH | Rated input 399 MBTUH printed in the 241896 product submittal's AHRI ratings table. |
| Output | ||
| Output | 391 MBH | Rated output 391 MBTUH printed in the 241896 submittal. |
| Efficiency | ||
| AHRI thermal efficiency | 98 % | AHRI thermal efficiency 98% at full rate per the 241896 submittal. |
| 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 241896 submittal. |
| Combustion air intake | 4 in | Air intake diameter per the 241896 submittal. |
| Physical and connections | ||
| Water connection | 2" NPT | Water inlet/outlet connection per the 241896 submittal's dimensions table. |
| Gas connection | 1" NPT | Gas connection (natural gas) per the 241896 submittal; the submittal notes the unit is field-convertible to propane. |
| Weight | 547 lb | Approximate operating weight 547 lb printed in the 241896 submittal. |
| Water content | 13 gal | Water content 13 gal printed in the 241896 submittal. |
| Electrical | ||
| Electrical | 120/208 VAC, 1-phase | Operating voltage from the product page model data. |
| Operating limits and other | ||
| Turndown | 10:1 | Turndown printed for the H7-406L in the 241896 submittal. |
| Maximum water flow | 73 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 is the factory configuration; the 241896 submittal covers propane field conversion. |
Manuals
Alerts documented for this model
Frequently asked questions
What are the H7-406L ratings?
Product submittal 241896 prints 399 MBTUH input, 391 MBTUH output and 98% AHRI thermal efficiency at 10:1 turndown.
What size are the H7-406L connections?
2" NPT water connections, a 1" NPT gas connection, a 4 in flue and a 4 in combustion-air intake, per the 241896 submittal's dimensions table.
Which manual covers the XVers L?
Raypak publishes the XVers L I&O manual as 241782 in English and 241782-FR in French, with submittal 241896 for the rating table.
Questions about the Raypak XVers L H7-406L?
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 — XVers L hydronic boiler product page · accessed September 9, 2026
- Raypak — XVers L Type H Models 406L-856L product submittal (241896) · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.