Dettson SUPREME SUP10-M2401A

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Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features

This document provides installation instructions and a homeowner's manual for the SUPREME Fournaise électrique Electric Furnace. It is designed for multi-position installation (upflow, downflow, horizontal) and operates on a 3-wire 120/240 VAC, 60 Hz, single-phase power supply.

Function Description

The SUPREME electric furnace is a central heating unit designed to provide comfortable and economical heating for residential or commercial spaces. It utilizes electric heating elements and a multi-speed blower motor to distribute warm air throughout a duct system. The unit can be integrated with an air conditioning system or a heat pump for year-round climate control. Its multi-position design allows for flexible installation in various configurations, adapting to different building layouts. The furnace is equipped with safety controls, including high-limit thermal protectors and circuit breakers, to ensure safe operation. It also features terminals for connecting accessories such as humidifiers and electronic air cleaners.

Important Technical Specifications

The manual details various models (SUPxx-M2401A and SUPxx-M2401B) with different power outputs and blower motor types.

Power, total (Kw): Ranges from 10 kW (SUP10-M2401A) to 27 kW (SUP27-M2401B).
Power, first stage (Kw): Varies from 5 kW to 15 kW, depending on the model.
Net capacity (BTU/h): Ranges from 34,120 BTU/h to 92,130 BTU/h.
Heating temperature rise range (°F): Typically between 40-50°F and 60-80°F, depending on the model and blower speed selection.
Electrical System: All models operate on 3 wires, 120/240 VAC, 60 Hz, single-phase.
Electrical Elements (Kw): The number and power of individual heating elements vary by model, contributing to the total power output. For example, a 10 kW unit has two 5 kW elements, while a 27 kW unit might have six elements (e.g., 5 kW, 5 kW, 5 kW, 5 kW, 4 kW, 4 kW).
Blower Motor:
- SUPxx-M2401A models typically use a 1/3 HP, 4-speed blower motor.
- SUPxx-M2401B models typically use a 1 HP, 4-speed blower motor.
Blower Motor Consumption (Amp. Max.): Ranges from 6 Amps (1/3 HP motor) to 13 Amps (1 HP motor).
Heating Elements Consumption (Amp): Ranges from 41 Amps (10 kW) to 111 Amps (27 kW).
Total Consumption (Amp): Ranges from 47 Amps (10 kW) to 124 Amps (27 kW).
Nominal blower size (diam. X width): 10 x 8 inches for 1/3 HP motors, 12 x 10 inches for 1 HP motors.
Overall dimensions (width x depth x height): 20" x 20" x 36.5".
Supply duct opening: 15" x 18".
Return duct opening: 19" x 19".
Filter quantity and size: (1) 20" x 20".
Shipping weight: 48 Kg / 105 lbs.
Maximum cooling capacity: 3 tons for 1/3 HP motor models, 5 tons for 1 HP motor models.

The manual includes detailed airflow tables (CFM) for both 1/3 HP and 1 HP motors across various external static pressures (0.1 to 0.7 inches w.c.) and blower speeds (LOW, MED-LOW, MED-HIGH, HIGH). These tables are crucial for proper system balancing and performance verification.

Usage Features

Multi-Position Installation: The furnace is designed for upflow, downflow, or horizontal (left or right) installation, offering versatility for different building requirements.
Thermostat Control: The unit is controlled by a room thermostat, which can be a 1-stage or 2-stage type, with or without outdoor control for 2-stage functionality. Wiring diagrams are provided for various thermostat configurations, including electric heating only and electric heat with cooling applications.
Heat Anticipator Adjustment: For thermostats equipped with a heat anticipator, instructions are given for adjustment to ensure comfortable and economical heating cycles.
Blower Speed Adjustment: The supply air adjustment for both heating and cooling modes is achieved by positioning the red (heating) and blue (cooling) wires on the appropriate blower speed terminals (LOW, MED-LOW, MED-HIGH, HIGH). Factory settings are for 0.5 inch static pressure.
Manual Furnace Controls: The unit includes manual controls such as a "HI/LO" switch to adjust heating element power (approximately half the elements in "LO" position), an "ON/OFF VENT/FAN" switch for continuous blower operation, and circuit breakers for motor and control circuit protection.
Accessory Connections: The furnace provides a 120 VAC terminal for connecting accessories up to 2 amps, such as humidifiers and electronic air cleaners. Relays for 24 VAC accessories can also be installed.
Heat Pump Compatibility: The furnace can be used with a heat pump, requiring a thermostat with a dual fuel option or a fossil fuel kit to prevent simultaneous operation of electric elements and the heat pump.
Airflow Verification: The manual outlines a procedure for verifying airflow using a supply air temperature rise test, which involves measuring total amperage, voltage, supply air temperature, and return air temperature. This helps ensure the unit operates within specified temperature rise ranges.
High Limit Verification: A test procedure is described to verify the proper functioning of the high-limit thermal protectors by temporarily restricting return air supply.

Maintenance Features

Air Filter: The unit comes with a disposable air filter that should be replaced twice a year, or more frequently depending on the presence of animal hair, dust, etc. Dirty filters negatively impact performance.
Motor Lubrication: The blower motor is permanently lubricated and does not require additional lubrication.
Preventive Maintenance: Regular inspection by a qualified service technician is recommended to avoid unnecessary expenses and inconvenience.
Troubleshooting: Before calling for service, homeowners are advised to check fuses/circuit breakers, the furnace's 15A circuit breaker, and the thermostat setting.
Information for Service: When calling for service or ordering replacement parts, specifying the model and serial number of the appliance is important.
Clearances to Combustible Material: The furnace is approved for zero clearance to combustible material for the heating unit. For supply air ducts, clearances vary based on heating capacity (zero clearance for up to 20 kW, 25 mm (1") for 23 kW or more for the first 0.9 m (36") of duct). Special downflow bases (DFB-FEM) are available for 23 kW units and up to ensure proper clearances on combustible floors.
Water Protection: The furnace is not watertight and is not designed for outdoor installation. It must be installed to protect electrical components from water.
Freezing Prevention: Precautions are outlined for unattended heaters during cold weather, including closing the main water valve, purging pipes, opening faucets, and arranging for frequent checks of the house.