Raypak Delta Limited H9-1529B
The Raypak Delta Limited H9-1529B is an indoor non-condensing copper-fin commercial hydronic boiler rated 1,530 MBTUH input and 1,285 MBTUH Type H output at 84% thermal efficiency, with 4-stage firing and a 12 in flue.
Key figures
- Max input
- 1,530 MBH
- Max CSA output
- 1,285 MBH
- AFUE
- —
- Min input
- —
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Raypak Delta Limited H9-1529B in practice
The H9-1529B is the 1,530 MBTUH size of the Delta Limited, Raypak's indoor non-condensing copper-fin boiler based on the same basic design as the Hi Delta with a reduced feature set at reduced cost. The official submittals print 1,530 MBTUH input and 1,285 MBTUH Type H output at 84% thermal efficiency, with 4-stage firing, a 79-7/8 in casing width, 2-1/2" NPT water connections, a 2" NPT gas connection, a 12 in flue, 1225 lb approximate shipping weight and <12 A boiler amp draw.
The model-number key in the I&O manual (241330) reads H for hydronic and the following digit for firing mode — 4 for on-off, 3 for 2-stage, 8 for 3-stage and 9 for 4-stage — which is how the page's H4/H3/H8/H9 prefixes match the printed stage counts. Submittals 242015 (399B-899B) and 242016 (989B-2339B) carry the rating tables above.
Best suited to
- Commercial hydronic loads near 1,530 MBTUH input
- Budget-sensitive plants wanting the Hi Delta design with a reduced feature set
- Indoor installations on Category I or III venting
Applicability and support
- Model number
- H9-1529B
- 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 | 1,530 MBH | Rated input 1,530 MBTUH printed in the Delta Limited submittals (242015/242016) and the product page model rows. |
| Output | ||
| Output | 1,285 MBH | Type H (hydronic) output 1,285 MBTUH printed in the Delta Limited submittals at 84% thermal efficiency. |
| Efficiency | ||
| AHRI thermal efficiency | 84 % | 84% Type H thermal efficiency per the Delta Limited submittals and product page model rows. |
| Venting and air | ||
| Flue outlet | 12 in | Flue connection (K) per the Delta Limited submittals. |
| Venting category | Category I & III | Non-condensing Category I or III venting per the product page model rows. |
| Physical and connections | ||
| Width (A) | 79-7/8 in | Dimension A printed in the Delta Limited submittals. |
| Water connection | 2-1/2" NPT | Water connection (H NPT) per the Delta Limited submittals. |
| Gas connection | 2" NPT | Gas connection (G NPT, natural gas) per the Delta Limited submittals; propane connection sizes are printed separately. |
| Weight | 1,225 lb | Approximate shipping weight 1225 lb printed in the Delta Limited submittals. |
| Electrical | ||
| Electrical | 120 VAC, 1-phase; <12 A boiler draw | Operating voltage and boiler amp draw from the Delta Limited submittals and product page model rows. |
| Operating limits and other | ||
| Firing stages | 4 firing stages | Firing stages printed in the Delta Limited submittals; the manual's model-number key maps the first digit (4 = on-off, 3 = 2-stage, 8 = 3-stage, 9 = 4-stage). |
| Turndown | 4:1 | Turndown from the product page model rows, matching the printed firing-stage count. |
| Maximum water flow | 132 GPM | Maximum water flow from the product page model rows. |
| Fuel | Natural gas or propane | Natural gas or propane; the submittals print natural-gas and propane rates. |
Manuals
Alerts documented for this model
None documented yet.
Frequently asked questions
What are the Delta Limited H9-1529B ratings?
The official submittals print 1,530 MBTUH input, 1,285 MBTUH Type H output at 84% thermal efficiency, with 4-stage firing.
What does the model number H9-1529B mean?
The I&O manual's key reads H for hydronic heating and the following digit for firing mode: 4 = on-off, 3 = 2-stage, 8 = 3-stage and 9 = 4-stage, followed by the approximate MBTUH size.
Can the H9-1529B run on propane?
Yes — the submittals print natural-gas and propane rates and connection sizes for this size.
Questions about the Raypak Delta Limited H9-1529B?
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.
Compare and explore
- Raypak Delta Limited H8-1259B vs Delta Limited H9-1529BComparison
- Raypak Delta Limited H4-399BSame series
- Raypak Delta Limited H3-499BSame series
- Raypak Delta Limited H3-649BSame series
- Raypak Delta Limited H3-749BSame series
- Raypak Delta Limited H3-899BSame series
- Raypak Delta Limited H3-989BSame series
- Raypak Delta Limited H8-1259BSame series
- Raypak Delta Limited H9-1799BSame series
- Raypak Delta Limited H9-1999BSame series
- Raypak Delta Limited H9-2069BSame series
- Raypak Delta Limited H9-2339BSame series
- Delta Limited series hub
- Buying guide
Sources and verification
- Raypak — official site · accessed September 9, 2026
- Raypak — Delta Limited hydronic boiler product page · accessed September 9, 2026
- Raypak — Delta Limited Type H Models 399B-899B product submittal (242015) · accessed September 9, 2026
- Raypak — Delta Limited Type H Models 989B-2339B product submittal (242016) · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.