THERMO 2000 VoltMax SCR VOLTSCR24072P1 Commercial Electric Boiler | 72 kW - 240V 1 Phase

72 kW on 240 V single phase, with output your building can control

The largest 240 V single-phase size

Some large buildings heated with hot water only have a single-phase supply: a large apartment building in Laval, a commercial building on the North Shore, an old building expanded over the years. Thermo 2000’s VoltMax 72 is designed for them. Among the 240 V single-phase sizes we offer in the VoltMax SCR series, it is the largest: 72 kW, or 245,664 BTU/h according to the manufacturer.

It heats the water loop that feeds radiators, radiant floors or hydro-air coils, and its second setpoint can serve an indirect water heater, with or without domestic hot water priority.

300 A: a load to plan for

Thermo 2000 publishes a current of 300 A for this model. On a single-phase service, that is a very large load, and it is the first thing we check. If the margin is not there, you have two options: a smaller size in the series, such as the 66 kW or 60 kW VoltMax, if the heating load allows it, or an increase in the building’s electrical capacity.

Once the boiler is in place, its output stays under control. The solid-state relay (SCR) varies it from 0 to 100%, which, according to Thermo 2000, limits peak power demand. An external system, such as a building management system, can also send it a setpoint and output through a 0-10 Vdc signal, or communicate with it over BACnet IP or MS-TP.

What the boiler includes

Above 60 kW, Thermo 2000 installs a low water cut-off as standard, which interrupts heating if the water level drops. Two limit controls (automatic and manual), the factory-installed relief valve, control and power fuses and breakers, the outdoor sensor and the Schneider Electric controller complete the delivery. The controller shows alarm codes in French or English, and its Ethernet port gives access to a web page and email alarms.

Heating relies on 12 replaceable 6 kW Incoloy immersion elements, run in stages that the controller rotates. The unit is vertical and compact: 3 in of clearance on the sides and back, 24 in at the front, 32 in above, 310 lb (141 kg) and 11 US gal of water. The circulator and expansion tank are added to the quote.

AirGreen’s installation

We start with a free on-site estimate, including a review of the electrical loads, then you receive a written quote. Our technicians install the boiler, connect it to the loop through its 1 1/2 in male NPT side connections, make the electrical connection, mount the outdoor sensor, fill and purge the system, check the safety devices and set up the controller.

AirGreen is a family business established in Montreal for more than fifteen years, holding RBQ licence 5645-9605-01 in ventilation, refrigeration and electrical work. Thermo 2000 covers the tank for 10 years (limited warranty, closed-loop heating) and the electrical and mechanical components for 2 years.

Let’s start with the estimate

We install the VoltMax SCR in Montreal, Laval, Longueuil, on the North Shore and on the South Shore. Ask for your free estimate: you receive a written quote, and financing is available.