DETTSON Suprême Modulante SUP20-M240V12 Electric Furnace | 20 kW - 240V

20 kW of modulated heat, set as close as possible to your needs

Plenty of output that knows how to stay in the background

A 20 kW furnace is justified in a large home by the coldest days of winter. The rest of the time, that output is not needed. The Dettson Suprême Modulante SUP20-M240V12 solves this paradox: its solid-state control varies the element output from 0 to 100 %, based on a 5 to 100 % demand sent by the thermostat. It delivers up to 20 kW at 240 V, or 15 kW and 51,256 BTU/h at 208 V, and moves air with a 1/2 HP ECM motor.

The thermostat, at the heart of the system

To benefit from modulation, you need a thermostat that speaks the same language as the furnace. Dettson provides for two types. The modulating thermostat connects to the V/W2, C, R, G, Y1, Y2, O and DH terminals and sends a PWM signal. The communicating thermostat uses terminals 1, 2, R and C with an RJ11 cable. It is this second choice that, with a coil on the return, lets the heat pump and the elements heat at the same time, in Dettson’s Right-Sized® system. With a two-stage or modulating heat pump, backup is automatic through the CALME and FUSION modes, via the K03081 interface.

A control interface then lets you set up the whole unit, which we do at commissioning.

In a Greater Montreal home

This model suits large ducted homes in Montreal, Laval or on the South Shore whose heat-loss calculation comes to 20 kW. The electrical circuit is planned at the quote stage: Dettson calls for a 125 A maximum breaker at 240 V and publishes a 103.2 A ampacity. The furnace is multi-position, approved for zero clearance, and compatible with Smart Duct® small ducts; in that case, Dettson publishes 1,000 CFM and 2.5 tons of cooling at maximum. For conventional ducts, the sheet and the manual differ: we confirm the values before choosing the coil.

What AirGreen’s installation covers

AirGreen is a family business established in Montreal for more than fifteen years, holding RBQ licence 5645-9605-01 for ventilation, refrigeration and electrical work. For this modulating furnace, we provide:

• the free estimate, with the load calculation and a panel check;
• a written quote that specifies the recommended thermostat;
• setting the unit, the electrical connection and the duct connections;
• wiring the thermostat, setting up the interface and commissioning.

We also work in Longueuil and on the North Shore.

Let’s talk about your comfort

Ask for a free estimate: we help you choose between a modulating and a communicating thermostat and give you a written quote. Financing is available.