On-demand hot water systems: Efficient commercial hot water


	Serving New England and Upstate New York

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	"I am so sold on the on-demand system that I will use them in the future, whether building multi- or single family units." Bion Foster, laundromat owner, innkeeper and residential landlord, Bangor, ME "As my business grew I didn't have the space to add a boiler room and going with on-demand meant I didn't need any permits. If I need more volume I just add a unit. I own 13 Rinnais." Wayne Bradbury, commercial laundry service owner, Portland, ME

	How it works—save space, save fuel, save money

			Each unit provides up to 8.5 gallons per minute. When faucet is opened, burner in unit turns on and heats metal coils in the heat exchanger. Water is heated instantly by heat exchanger. Hot water is continuous and a constant temperature. When faucet is turned off, unit shuts off. No energy is wasted. Multiple units can be manifolded together. The units turn on sequentially to meet demand. Multiple units provide redundancy. Load averaged between units so they wear evenly. Units are wall-mounted either internally or externally, saving valuable space. Typical life expectancy is 15 to 20 years.
	Commercial case studies

	Laundromat: Six Rinnai on-demand hot water units save laundry-owner money, space, and much more. Apartment: A 14-unit building replaces a 360,000 BTU boiler and 350 gallon holding tank with two Rinnai on-demand units.

	Rinnai 2532 Propane or natural gas, external wall mount

	More details: Installation and venting options		Mounted outside on an exterior wall. NO footprint. Propane or natural gas Direct vent; forced combustion Up to 8.5 gallons per minute Output: 15,000-199,000 per hour. Digital control with preset temperature range from 96° to 180° 82% efficiency 23 3/4" height, 13 3/4" width, 6 3/4" depth 5 year warranty Self-diagnostic system—displays a code for the plumber Typical life expectancy is 15 to 20 years Installation costs often comparable to a conventional system - then save on fuel every month, year after year. Contact Nelson and Small for details.
	Rinnai 2532 FFU-C Propane or natural gas, internal wall mount

	More details: Installation and venting options		Interior wall mount with a single wall or roof direct vent. NO footprint. Propane or natural gas Direct vent; forced combustion Up to 8.5 gallons per minute Output: 15,000-180,000 per hour. Digital control with preset temperature range from 96° to 180° 87% efficiency 23 5/8" height, 13 25/32" width, 8 13/16" depth 5 year warranty Self-diagnostic system—displays a code for the plumber Typical life expectancy is 15 to 20 years Installation costs often comparable to a conventional system - then save on fuel every month, year after year. Contact Nelson and Small for details.

A 14-unit apartment building replaces a 360,000 BTU boiler and 350 gallon holding tank with two Rinnai on-demand units.

Actual benefits:

Gas usage reduced by nearly 50%!
No tenant complaints
Constant, pre-set water temperature
No maintenance
Takes up less space
Provides redundancy

Actual Thermal Usage graph

Read more details

More case studies:

Laundromat: Six Rinnai on-demand hot water units save laundry-owner money, space, and much more.

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