THERMO 2000 VoltMax SCR VOLTSCR20823P1 Commercial Electric Boiler | 22.5 kW - 208V 1 Phase

22.5 kW modulated from 0 to 100% for a commercial building on 208 V single phase

What the VoltMax SCR 23-208-1 PH is

Thermo 2000’s VoltMax is an electric hot-water boiler designed for commercial, institutional and multi-unit buildings. This model, designated VOLTMAX SCR 23-208-1 PH by the manufacturer, delivers 22.5 kW on a 208 V single-phase supply. It heats the water of a loop of radiators, baseboards or radiant floor, with no GHG emissions on site.

What sets it apart is the way it measures out its output. On top of its relay stages, the VoltMax modulates its output from 0 to 100% through a solid-state relay (SCR). Rather than switching its elements on in blocks, it follows demand continuously. According to Thermo 2000, this modulation limits the peak power the boiler draws. Its six Incoloy immersion elements are replaceable, and the unit is designed to be quiet, clean and low-maintenance.

Its place in a Quebec building

It typically suits a ground-floor commercial space of a mixed-use building in Montreal, a small apartment building in Laval heated by a central loop, or South Shore offices that have kept their hot-water radiators. In these buildings supplied at 208 V single phase, the VoltMax draws 108.4 A at full output: we size the protection and conductors from the unit’s nameplate.

Its vertical design needs little room. Thermo 2000 specifies clearances of 3 in at the sides and rear, 24 in at the front and 32 in above. The unit weighs 310 lb (141 kg) and holds 11 US gal of water. Its Schneider Electric controller, with a 3 in backlit display, shows alarm codes in French or English, applies outdoor reset with the included sensor and connects to a building management system over BACnet IP or MS-TP.

What AirGreen’s installation covers

We start with a free on-site estimate: existing loop, mechanical room, electrical service and the building’s needs. The written quote that follows lists the circulator and expansion tank, which are not among the supplied parts, as well as the low-water cut-off, optional at this size.

Our technicians set the boiler in place while respecting the clearances, connect it to the loop through its 1 1/2 in male NPT connections and pipe the discharge of the factory-installed relief valve. They mount the outdoor sensor, make the electrical connection under AirGreen’s RBQ licence 5645-9605-01 (ventilation, refrigeration and electrical), then set the setpoint, between 50 °F and 200 °F, and the outdoor reset.

AirGreen is a family business established in Montreal for more than fifteen years. We also work in Longueuil and on the North Shore. Thermo 2000 warrants the tank for 10 years (limited warranty, closed-loop heating) and the electrical and mechanical components for 2 years.

Let’s plan your project

Building manager or owner, ask for a free estimate: you will receive a written quote, and financing is available to spread out your payments.