Rinnai R85 Tankless Water Heater
Rinnai R85 Specs
Hot water capacity – Minimum flow – 0.5 gpm (gallons per minute)
– Maximum flow – 5.3 gpm
Anticipated maximum – at 75°F temperature rise (input 45°, output 120°) 4.2 gpm
There should be no single water fixture requiring more than 3.5 gpm
Sized right for our Ontario climate
Input BTU rating: Minimum 15,000 Maximum 180,000
Efficiency rating: 82%
• Water lines – minimum ¾” required (inlet & outlet) – R-Ready Valve Set included
• Gas lines – sized for 180,000 BTU rating (3/4” minimum, larger with long runs)
• Gas pressure – minimum 6” W.C. (watch low pressure areas)
• Water pressure – target 30 – 80 psi (minimum 15 psi, maximum 150 psi)
• No anti-scald mixing valve required (check with your local municipality)
• Venting – 5” concentric venting (proprietary to Rinnai)
• Outside wall location is recommended – Standard Vent Kit included
Hard water areas
• Unit is approved for use in areas where the water hardness is less than 12 grains
• Typically, GTA, Ottawa and Niagara municipal water sources qualify
• North (Barrie) and southwestern Ontario likely not eligible
• For hard water areas above 12 grains, please discuss with installation crew. A water softener may be required.
• No re- circulating systems permitted (holding tanks, plumbing re-circ, etc.)
August 4, 2022
Does the R85 use a lot of natural gas,?
How often should R85 be flushed out?
December 22, 2010
Given that we’re in Canada, how about providing metric specifications? Rather than making us do all the necessary conversions ourselves into more understandable units.
Not everyone shopping for these things is over 50, which is about the age of folks who last saw the imperial system used in Canada. Canada has been metric since 1972. The school systems have been teaching metric since before that. The only country in the world today that isn’t metric is the USA. Even the UK has all these specs in metric – in addition to having far more choice, but that’s another matter. Also, most safety and building specifications and documents relating to standards are METRIC in Canada.
So please, how about providing the metric specifications for these products?