Camus Hydronics · Dynaforce Series
Camus Dynaforce DR400
The Camus Dynaforce DR400 is the 399 MBH hydronic-heating size of Camus' fully condensing watertube line: 399 MBTU/hr input, 375 MBTU/hr output, up to 99% thermal efficiency and 5:1 turndown on the Honeywell SOLA control.
Key figures
- Max input
- 399 MBTU/hr
- Max CSA output
- 375 MBTU/hr
- AFUE
- —
- Min input
- —
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Camus Dynaforce DR400 in practice
Per the official Dynaforce hydronic-heating submittal (99-0129 Rev. 06), the DR400 is rated at 399 MBTU/hr input and 375 MBTU/hr output with a 6.3 US-gallon heat-exchanger water content and a 500 lb shipping weight. It connects on 1 1/2" NPT water lines with a 1" NPT gas connection, and 120 vac, 60 hz — 20 a max (boiler only).
The DR400 uses the Dynaforce's all-welded 439 stainless 12-pass watertube heat exchanger with 316L waterways, rated to 160 psig with constant 40°F returns, fired by a radial knitted-stainless premix burner through Pulse-width modulation (DR300–DR1000). direct igniter, 3 ignition tries then lockout, with light-off at no more than 50% input.
Because Camus is a Mississauga, Ontario manufacturer, the Dynaforce is a Canadian-made condensing watertube option; Boilers.ca reproduces the manufacturer's printed figures here and leaves sizing of a boiler plant to a heat-loss and load calculation by a licensed contractor.
Best suited to
- Hydronic heating plants whose design load lands near 399 MBTU/hr input (375 MBTU/hr output)
- Projects wanting a condensing watertube boiler with a Canadian-built heat exchanger and 40°F return capability
- Multiple-boiler plants: the SOLA control cascades up to eight units
Applicability and support
- Model number
- DR(H) 400
- Canadian availability
- available
- Production status
- unknown
- 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 Camus Hydronics. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input, maximum | 399 MBTU/hr | As printed in the Dynaforce hydronic-heating submittal (99-0129 Rev. 06); 5:1 turndown gives a 20% minimum firing rate. |
| Output | ||
| Output, maximum | 375 MBTU/hr | Hydronic heating output as printed in the submittal. |
| Efficiency | ||
| Efficiency | 99 % | Up to 99% thermal efficiency; NOx 9 ppm corrected to 3% O2 (submittal 99-0129 Rev. 06). |
| Venting and air | ||
| Venting | Category II or IV (SS / AL29-4C, PPE / polypropylene; PVC and CPVC for select systems — consult factory) | |
| Physical and connections | ||
| Heat-exchanger water content | 6.3 US gal | |
| Weight | 500 lb | |
| Water connections | 1 1/2" NPT | |
| Gas connection | 1" NPT | |
| Heat exchanger | 439 SS welded 12-pass watertube, 316L waterways | |
| Electrical | ||
| Electrical requirement | 120 VAC, 60 Hz — 20 A max (boiler only) | |
| Operating limits and other | ||
| Ignition | Direct igniter, 3 ignition tries then lockout | |
| Modulation drive | Pulse-width modulation (DR300–DR1000) | |
| Turndown ratio | 5:1 | Minimum 20% firing rate with light-off at no more than 50% input. |
| Max. working pressure | 160 psig | 1100 kPa; ASME Section IV heat-exchanger testing. |
| System return temperature | 40 °F | Constant allowable return temperatures for fully condensing operation. |
| Control | Honeywell SOLA touchscreen; Modbus RTU; cascade up to 8 | |
| Certification | CSA (ANSI Z21.13 / CSA 4.9); ASHRAE 90.1 | |
Manuals
Alerts documented for this model
None documented yet.
Frequently asked questions
Is the Dynaforce DR400 condensing?
Yes. Every Dynaforce is fully condensing with a welded 439 stainless watertube heat exchanger rated for constant 40°F system returns, up to 99% thermal efficiency and 9 ppm NOx.
How big is the DR400?
The submittal prints 399 MBTU/hr maximum input and 375 MBTU/hr hydronic-heating output, with a 500 lb weight and 1 1/2" NPT water connections.
What fuel can a Dynaforce burn?
Natural gas or propane, with hydrogen blend up to 25% (UL Verified) also listed by Camus. Fuel type and conversion are decided and performed by a licensed contractor.
Questions about the Camus Dynaforce DR400?
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
- Camus Dynaforce DR350 vs DR400Comparison
- Camus Dynaforce DR400 vs DR500Comparison
- Camus Dynaforce DR300Same series
- Camus Dynaforce DR350Same series
- Camus Dynaforce DR500Same series
- Camus Dynaforce DR600Same series
- Camus Dynaforce DR800Same series
- Camus Dynaforce DR1000Same series
- Camus Dynaforce DR1200Same series
- Camus Dynaforce DR1400Same series
- Camus Dynaforce DR1600Same series
- Camus Dynaforce DR1800Same series
- Camus Dynaforce DR2000Same series
- Camus Dynaforce DR2500Same series
- Camus Dynaforce DR3000Same series
- Camus Dynaforce DR3500Same series
- Camus Dynaforce DR4000Same series
- Camus Dynaforce DR4500Same series
- Camus Dynaforce DR5000Same series
- Dynaforce Series series hub
- Buying guide
Sources and verification
- Camus — Dynaforce Series product page (600,000–5,000,000 BTU/hr range) · accessed September 9, 2026
- Camus — Watertube Boilers catalogue · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.