THERMO 2000 BuffMax BUFF200A-3NPT-HRZ-HT ASME Buffer Tank (200 gallons)

200 US gallons of reserve for the largest hot-water heating loops

The Thermo 2000 BuffMax BUFF200A-3NPT-HRZ-HT buffer tank is the largest in the BuffMax ASME series. Its 200 US gallon vessel, built to Section VIII, Division 1, of the ASME Boiler and Pressure Vessel Code, is installed between the heat source and the distribution of an entire building. The manufacturer designs it as a 3-in-1: buffer tank, storage tank and hydraulic separator.

For the largest heating loops

In a large multi-unit building in Montreal or an institutional building in Laval, heating demand changes with every thermostat, every schedule and every door that opens. An electric boiler or an air-to-water heat pump that follows these changes without a reserve starts and stops constantly. The BUFF200A’s 200 US gallons absorb these swings: the source runs longer cycles and the distribution draws what it needs. The four 3 in NPT connections, two on each side, keep the two circuits independent. These are precisely the situations the manufacturer targets: low-mass boilers, heat pump systems and multi-zone systems.

94 inches high: check the room first

The BUFF200A has the same 32-inch diameter as the 175-gallon size, but it reaches 94 inches in height. That is the first thing we check: clear height under the beams and ducts, door widths, stairs, the path from the truck. The supplied lifting lugs make handling easier, then the adjustable legs level the tank. Its 2-inch HFC-free polyurethane insulation holds the heat in: Thermo 2000 announces a loss limited to 1/2 °F per hour.

Technical points to validate with your engineer

• Heating water only: the HT code excludes chilled water, which requires a non-ASME HC BuffMax.
• Maximum working pressure of 125 psi, the ASME value published by Thermo 2000.
• No BXT option: centre connections are not available on ASME models.
• CRN number: the manufacturer’s documentation does not state one; we confirm it with Thermo 2000 if your specification requires it.
• Closed loop only: no connection to domestic hot water or to an atmospheric system.

Installation by AirGreen

We install the BUFF200A with electric boilers and air-to-water heat pumps, in Montreal, Longueuil, on the South Shore, on the North Shore and throughout Greater Montreal. After a free on-site estimate and a written quote, we plan the delivery, set the tank, connect it on the source side and the distribution side, install the supplied ball valve, air vent, temperature and pressure indicator, immersion well and drain valve, then fill, purge and commission the loop.

We are a family business established in Montreal for more than 15 years, with RBQ licence 5645-9605-01 (ventilation, refrigeration and electrical). On the manufacturer’s side, Thermo 2000 covers the tank for 5 years for heating and the mechanical parts for 2 years, in residential or commercial use, under its terms.

Send us the plans, the mechanical specification or a photo of your mechanical room: we confirm whether the BUFF200A fits and whether it suits your loop. Free estimate and financing available.