STELPRO SFECM SFECM3021 Electric Furnace | 30 kW - 240V

The top of the SFE series: 30 kW, a 1 HP ECM motor and every connection

First, the electrical question

At 30 kW at 240 V, the SFECM3021 draws a total amperage of 130 A according to Stelpro, or 113 A at 208 V, a voltage at which the output drops to 22.5 kW. A project of this size therefore starts with the electrical service: available capacity, room in the panel, then breaker and conductor sizes taken from the installation manual and the rating plate. If the heat loss calculation gives less than 30 kW, we will point you to a smaller SFECM size.

What makes it the most complete model

It brings together the highest output in the series, a variable-speed ECM motor and the 1 HP size, plus the Y2, humidifier and air cleaner terminals specific to the SFECM models. Stelpro points to this motor’s constant airflow and better efficiency. Each mode has its own range, set with 7-position potentiometers: 400 to 1,200 CFM on low continuous fan, 1,200 to 2,000 CFM on high, and up to 2,200 CFM in both heating and cooling.

On the heating side, the elements are individually framed and modulated by the board, which includes an Eco mode, a temperature sensor and two manual-reset thermal cut-outs.

Example: a large new build

Think of a new three-level home on the North Shore, served by a single duct system, with a two-stage central heat pump, a humidifier and an air cleaner. The SFECM3021 becomes the heart of the system: it heats when the demand calls for it, gives the coil the high airflow it needs and takes the accessories on its board.

Depending on where the coil goes, we configure it in Type A, the factory setting, where the elements give way to the heat pump placed downstream, or in Type B, where the furnace supplements a heat pump installed on the return side when the cold reduces its capacity. Either way, the board compensates during defrost.

What our installation includes

AirGreen is a family business from Montreal, active for more than fifteen years and holding RBQ licence 5645-9605-01 for ventilation, refrigeration and electrical work. After the free estimate and the written quote, we take care of:

• setting the 48 kg (105 lb) cabinet upflow, horizontal or downflow with the FSB2 adapter, sold separately;
• connecting it to the ducts and, where applicable, to the heat pump coil;
• the electrical connection according to Stelpro’s manual and the rating plate;
• setting each airflow range and configuring the thermostat.

The 20 x 20 x 1 in filter is not supplied: we add it to the quote.

Let’s talk about your build or renovation

For a project in Montreal, Laval, Longueuil, on the North Shore or the South Shore, book your free estimate. Detailed written quote and financing available.