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Viessmann · Vitogas 050 (ECD / ECV / RS)

Viessmann Vitogas 050 ECD-80

The Vitogas 050 ECD-80 is the second ECD size: 80 MBH input (23 kW), 66 MBH output and 83.5% AFUE in the same compact three-section chassis as the ECD-65.

DiscontinuedHistorically in Canada
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Key figures

Max input
—
Max CSA output
—
AFUE
83.5 %
Min input
—
Natural gasPropaneHeating-onlyresidential

Input is gas energy consumed; output is heat delivered. Never size from input alone.

Viessmann Vitogas 050 ECD-80 in practice

The ECD-80 raises input to 80 MBH (23 kW) with 66 MBH (19 kW) output at 83.5% AFUE. It shares the three-section, two-burner build, 2.6 USG water content and 50 psig maximum operating pressure with the ECD-65, along with the 340 x 502 mm footprint and 1035 mm height.

Weight stays 233 lb (106 kg) and the vent collar remains 5 in. Like the rest of the ECD range it is an atmospheric cast-iron boiler for natural gas or propane, chimney-vented with a draft hood and vent damper.

Best suited to

  • Existing ECD-80 installations needing printed ratings
  • Residential loads between the ECD-65 and ECD-100
  • Comparing same-chassis ECD sizes

Applicability and support

Model number
ECD-80
Canadian availability
historical
Production status
discontinued
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.

See all service areas

Specifications

Published specifications

Values as published by Viessmann. Units are shown with every value; notes flag conflicting sources or missing figures.

Viessmann Vitogas 050 ECD-80 specifications
SpecificationValueNote
Input
CSA input (natural gas)80 MBH23 kW, per the technical data manual
Output
CSA output / DOE output66 MBH19 kW
Efficiency
Efficiency (AFUE)83.5 %With intermittent pilot electronic ignition system and vent damper.
Venting and air
Vent pipe collar5 inChimney-vented with draft hood; each ECD ships with a vent damper.
Physical and connections
Weight (with insulation, burners and packaging)233 lb106 kg
Overall width340 mmPrinted as 13½ in
Overall depth502 mm19¾ in
Overall height1,035 mmPrinted as 40¾ in
Operating limits and other
FuelNatural gas or propane3.5 in. w.c. manifold pressure NG; 10 in. w.c. propane.
Cast iron sections32 burners.
Boiler water content2.6 USGPer the technical data manual.
Maximum operating pressure50 psig345 kPa.
Boiler supply / return1¼ in. male threadGas supply ½ in. male thread.

Manuals

Alerts documented for this model

None documented yet.

Services

Related parts & service

Frequently asked questions

What is the ECD-80 rated at?

80 MBH (23 kW) input, 66 MBH (19 kW) output and 83.5% AFUE, with three cast-iron sections and two burners.

How does the ECD-80 differ from the ECD-65?

Only the firing rate: 80 vs 65 MBH input and 66 vs 54 MBH output. Sections, burners, weight, water content and dimensions are identical.

What fuel does the ECD-80 use?

Natural gas or propane, with a printed 3.5 in. w.c. manifold pressure for natural gas and 10 in. w.c. for propane.

Questions about the Viessmann Vitogas 050 ECD-80?

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.

Call 778-909-5731Request service

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Sources and verification

Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.

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