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Raypak · Series
The Hi Delta is Raypak's non-condensing copper finned-tube hydronic boiler with cast-iron headers, available indoor or outdoor on natural gas or propane, rated 84% efficiency on the page, in the 302C–2342C model family.
Series facts
84% efficiency printed on the page hero; per-model ratings are published in Raypak submittals.
Raypak presents the Hi Delta as a non-condensing copper finned-tube hydronic boiler with cast-iron headers, available in indoor and outdoor configurations, with '84% efficiency' printed in the page hero. FlexGas dual-fuel variants are documented in a separate I&O (241295).
The model family printed on the page is '302C-2342C' with model rows 302, 402, 502, 652, 752, 902, 992, 1262, 1532, 1802, 2002, 2072 and 2342.
Raypak publishes I&O manuals 241663 (302C–902C) and 241664 (992C–2342C), with submittals available from the page. No explicit Canadian-availability sentence appears.
Highlights
Models
One canonical page per model with input, output and efficiency kept separate.
Raypak
The Raypak Hi Delta 302C is a non-condensing copper finned-tube commercial hydronic boiler rated 300 MBTUH input and 252 MBTUH Type H output at 84% thermal efficiency, with 2-stage (H3) firing and a 5 in flue collar.
Raypak
The Raypak Hi Delta 402C is a non-condensing copper finned-tube commercial hydronic boiler rated 399 MBTUH input and 335 MBTUH Type H output at 84% thermal efficiency, with 2-stage (H3) firing and a 6 in flue collar.
Raypak
The Raypak Hi Delta 502C is a non-condensing copper finned-tube commercial hydronic boiler rated 500 MBTUH input and 420 MBTUH Type H output at 84% thermal efficiency, with 2-stage (H3) firing and a 6 in flue collar.
Raypak
The Raypak Hi Delta 652C is a non-condensing copper finned-tube commercial hydronic boiler rated 650 MBTUH input and 546 MBTUH Type H output at 84% thermal efficiency, with 2-stage (H3) firing and a 8 in flue collar.
Raypak
The Raypak Hi Delta 752C is a non-condensing copper finned-tube commercial hydronic boiler rated 750 MBTUH input and 630 MBTUH Type H output at 84% thermal efficiency, with 2-stage (H3) firing and a 8 in flue collar.
Raypak
The Raypak Hi Delta 902C is a non-condensing copper finned-tube commercial hydronic boiler rated 900 MBTUH input and 756 MBTUH Type H output at 84% thermal efficiency, with 2-stage (H3) firing and a 8 in flue collar.
Raypak
The Raypak Hi Delta 992C is a non-condensing copper finned-tube commercial hydronic boiler rated 990 MBTUH input and 832 MBTUH Type H output at 84% thermal efficiency, with 3-stage (H8) firing and a 10 in flue collar.
Raypak
The Raypak Hi Delta 1262C is a non-condensing copper finned-tube commercial hydronic boiler rated 1,260 MBTUH input and 1,058 MBTUH Type H output at 84% thermal efficiency, with 4-stage (H9) firing and a 12 in flue collar.
Raypak
The Raypak Hi Delta 1532C is a non-condensing copper finned-tube commercial hydronic boiler rated 1,530 MBTUH input and 1,285 MBTUH Type H output at 84% thermal efficiency, with 4-stage (H9) firing and a 12 in flue collar.
Raypak
The Raypak Hi Delta 1802C is a non-condensing copper finned-tube commercial hydronic boiler rated 1,800 MBTUH input and 1,512 MBTUH Type H output at 84% thermal efficiency, with 4-stage (H9) firing and a 14 in flue collar.
Raypak
The Raypak Hi Delta 2002C is a non-condensing copper finned-tube commercial hydronic boiler rated 1,999 MBTUH input and 1,679 MBTUH Type H output at 84% thermal efficiency, with 4-stage (H9) firing and a 14 in flue collar.
Raypak
The Raypak Hi Delta 2072C is a non-condensing copper finned-tube commercial hydronic boiler rated 2,070 MBTUH input and 1,739 MBTUH Type H output at 84% thermal efficiency, with 4-stage (H9) firing and a 14 in flue collar.
Raypak
The Raypak Hi Delta 2342C is a non-condensing copper finned-tube commercial hydronic boiler rated 2,340 MBTUH input and 1,966 MBTUH Type H output at 84% thermal efficiency, with 4-stage (H9) firing and a 16 in flue collar.
| Specification | Raypak Hi Delta 302C | Raypak Hi Delta 402C | Raypak Hi Delta 502C | Raypak Hi Delta 652C | Raypak Hi Delta 752C | Raypak Hi Delta 902C | Raypak Hi Delta 992C | Raypak Hi Delta 1262C | Raypak Hi Delta 1532C | Raypak Hi Delta 1802C | Raypak Hi Delta 2002C | Raypak Hi Delta 2072C | Raypak Hi Delta 2342C |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| input-min | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Input | 300 MBH | 399 MBH | 500 MBH | 650 MBH | 750 MBH | 900 MBH | 990 MBH | 1,260 MBH | 1,530 MBH | 1,800 MBH | 1,999 MBH | 2,070 MBH | 2,340 MBH |
| Output | 252 MBH | 335 MBH | 420 MBH | 546 MBH | 630 MBH | 756 MBH | 832 MBH | 1,058 MBH | 1,285 MBH | 1,512 MBH | 1,679 MBH | 1,739 MBH | 1,966 MBH |
| afue | — | — | — | — | — | — | — | — | — | — | — | — | — |
| turndown | — | — | — | — | — | — | — | — | — | — | — | — | — |
| vent-max-3 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| vent-max-2 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Weight | 380 lb | 445 lb | 545 lb | 590 lb | 675 lb | 740 lb | 900 lb | 1,010 lb | 1,225 lb | 1,350 lb | 1,450 lb | 1,450 lb | 1,520 lb |
Read the full comparison: Raypak Hi Delta 302C vs Hi Delta 402C →
Read the full comparison: Raypak Hi Delta 502C vs Hi Delta 652C →
Read the full comparison: Raypak Hi Delta 902C vs Hi Delta 992C →
Read the full comparison: Raypak Hi Delta 1802C vs Hi Delta 2002C →
Error codes and alerts
No alerts documented for this series yet.
Manuals
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.
Services for Raypak boilers
No. Raypak lists Hi Delta under its non-condensing hydronic boilers: copper finned-tube with cast-iron headers and 84% efficiency printed on the page.
The page prints the 302C–2342C family with model rows 302, 402, 502, 652, 752, 902, 992, 1262, 1532, 1802, 2002, 2072 and 2342.
The page lists natural gas or propane, and FlexGas dual-fuel variants are documented in Raypak I&O 241295.
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
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.