STELPRO SONOMA STYLE Fan Heater
Models: ASSOS...WCW, ASSOS...W, ASSOS...MW
Contact STELPRO Customer Service:
- Website: WWW.STELPRO.COM
- Email: CONTACT@STELPRO.COM
- Phone: 1-844-STELPRO
This unit complies with CSA Standards.
Description of cover image: A modern living room scene featuring a STELPRO SONOMA STYLE fan heater mounted on a white wall. A door and various furniture items are visible in the background.
IMPORTANT INSTRUCTIONS
Before installing and using this product, read and understand these instructions. Keep them for future reference. Failure to follow these instructions may void the warranty and relieve the manufacturer of liability.
Adhere to the following instructions to avoid personal injury, property damage, serious injury, and potentially fatal electric shocks.
Any modification by the installer or user makes them responsible for resulting damage and may void CSA certification.
INTENDED USE
For indoor installation only. Ensure the unit is appropriate for its intended use.
RECOMMENDED HEATING CAPACITY
Recommended capacity is 1.25 W per cubic foot (0.03 m³) or 10 W per square foot (0.09 m²) for an 8 ft (2.44 m) ceiling. Actual capacity needed may vary based on insulation quality and heat loss. Consult a specialist or the STELPRO Design website for calculations. Insufficient capacity can lead to continuous operation and premature unit failure.
POSITION
Do not install where objects or furniture could be heat damaged. Maintain minimum clearances: 6 inches (15 cm) from adjacent surfaces and the floor. Keep combustible materials (furniture, bedding, papers, clothes, curtains) at least 36 inches (90 cm) from the front, and away from sides and rear. Ensure nearby materials can withstand heat. Do not install on a wall behind a door.
This unit contains hot and arcing parts. It is not designed for use or storage in wet areas or areas with flammable liquids, combustible materials, or corrosive, abrasive, chemical, explosive, or flammable substances (e.g., paint, gasoline, chlorine, sawdust, cleaning products).
RISK OF FIRE, ELECTRIC SHOCK, BODILY INJURY AND DAMAGE
Installation must be performed by a qualified person and connected by a certified electrician according to local codes. Protect the unit with an appropriate circuit breaker or fuse matching the nameplate. Ensure line voltage matches the unit's nameplate. The unit must be grounded. Switch off power at the circuit breaker before installation, repair, or cleaning.
Do not let the unit contact water sources or be splashed. Do not use if any part has been immersed, or if standing in water or with wet hands. Temporary odors may occur on first use or after long periods. The unit gets hot during operation; avoid touching hot surfaces with bare skin. Allow the unit to cool down after shutdown. Exercise extreme caution when used by or near children or invalids, or when left unattended.
Do not insert foreign objects into ventilation or exhaust openings, as this may cause electric shock, fire, or damage.
MAINTENANCE
To prevent fire, do not block air intakes or exhaust. Clean the unit regularly, especially in dusty areas, to prevent malfunctions or discoloration. Failure to maintain the unit poses a fire hazard.
If thermal protection activates, it indicates abnormal operating conditions. If it remains active, have the unit inspected by a qualified electrician or repair center. If the unit is damaged or defective, discontinue use, cut off power, and have it repaired by a certified center.
INSTALLING THE FAN HEATER
Read this guide for safe and easy installation.
WHAT IS IN THE BOX
- SONOMA STYLE Wall fan heater
- Self-adhering spacer
- 2 Caps
TOOLS REQUIRED
- Flat screwdriver
- Phillips screwdriver
- Level
- Tape measure
- Wire stripper
- Stud finder
- Tool to cut drywall or gypsum board
- 2 Screws (1-1/2" with a head at least 1/4" (6.5 mm) in diameter) for securing to a stud.
CONTROL AND COMPATIBILITY
Control your SONOMA STYLE fan heater via:
- ASSOSXXVVWC(WBB)C*: With a MAESTRO thermostat or any other compatible wall thermostat with a fan heater mode that can handle the unit's power.
- ASSOSMXXVV(WBB)C*: With its built-in electronic smart thermostat (unconnected or connected mode with MAESTRO controller-thermostat or Zigbee controller).
- ASSOSXXVV(WBB)C*: With its built-in electronic thermostat.
The built-in smart thermostat or MAESTRO wall thermostat enables compatibility with the MAESTRO environment. Connecting to a Zigbee network via MAESTRO controller-thermostat and mobile app optimizes comfort.
*Model Number Breakdown: XX = Power (10=1000W, 15=1500W, 20=2000W); VV = Voltage (01=120V, 02=240V, 08=208V); WC = Model without controls; T2 = Model with mechanical double pole thermostat; WBB = Model without back-box (U.S. market only, requires KIT-ASSOBB); C = Color (W=White).
1 WHERE TO INSTALL YOUR FAN HEATER
Install in an unobstructed location at least 6 inches off the ground. For easier control access, install at 12 inches off the ground.
ATTENTION: To avoid overheating, maintain clearances: at least 36 inches in front and 6 inches on either side. Keep combustible materials at least 36 inches away from the front, and away from sides and rear. Ensure nearby materials can withstand heat. Do not install on a wall behind a door or where furniture may impede its opening.
Recessing the fan heater:
- Check wall construction: requires at least 4 inches depth from finishing to inside of wall. A 2x4 stud construction with 1/2 inch finishing is compliant [A].
- Avoid exterior walls to maintain insulation.
- Ensure one side of the heater is fixed to a wall stud.
- Check for pipes, electrical wires, or other components inside the wall that could be damaged during installation.
Diagram description: Side view showing minimum 6" clearance from floor and wall. Top view showing minimum 36" clearance in front and 2x4 stud placement for wall mounting. Note: The unit must not be installed upside down nor sideway.
2 CUTTING THE POWER SUPPLY
To protect against electric shock, turn off power to the lead wires from the electrical panel.
3 PREPARING THE SURFACE FOR INSTALLATION
IMPORTANT: Models without a back-box require the KIT-ASSOBB back-box from your heater supplier. Do not use other back-boxes.
- Locate studs and any other wall structures.
- Measure the required space according to diagrams.
- Make an opening as shown in the diagram.
- Pull the power cable out of the wall, ensuring at least 6 inches of cable is inside the junction box for easy connection.
4 PREPARING THE FAN HEATER
- Pivot the fan heater's front panel upwards [1] and slide it up [2] to remove it. Place the panel on a clean surface.
- Remove the two screws holding the front panel.
- Lift the top [3] of the mechanical housing [A] and slide it [4] to remove it from the back box [B].
- Perforate one of the seven pre-cut holes for the power cable, choosing based on cable position and space.
- ATTENTION: Ensure the back box is oriented correctly with notches positioned at the bottom [C].
- Insert the wire clamp [D] into the hole and secure the power cable.
- If wall finish is not installed, attach the self-adhering spacer [E] to one of the four marked spots on the back box exterior that will rest against the stud. Spacer is not needed if wall finish is installed.
- For models WITHOUT a built-in electronic thermostat: A jumper [F] on the side of the mechanical box allows wattage reduction by half. Remove this jumper if needed.
5 ATTACHING THE BACK BOX TO THE WALL
- Insert the fan heater's back box into the wall opening, ensuring it is level.
- Screw the box to the wall stud using two mounting holes [A].
Note: If wall finishing is not installed, position the box correctly so it rests on the surface after finishing. For 1/2 inch finishing, fold side tabs and install directly on the stud. For other thicknesses, align the stud with perforated marks.
6 CONNECTING THE WIRING
Warning: Use copper or aluminum wires only, suitable for 194°F.
- Strip the power cable wires if necessary.
- Connect the fan heater and power supply wires using the supplied connection caps [A]. Tighten caps securely.
- Connect the grounding wire firmly with the green screw [B] at the back of the back box. The grounding screw can be moved to position [C] if needed.
- Store all wires neatly in the back box.
Diagram description: Electrical diagram shows connections for thermostat, motor, thermal fuse, element, jumper, and thermal protection. Connection diagram shows wire routing and connection points labeled A, B, C, D.
7 ATTACHING THE MECHANICAL HOUSING TO THE BACK BOX
- Insert the mechanical housing [A] into the back box by engaging the bottom hooks [B].
- Pivot the mechanical housing toward the wall, being careful not to trap wires or caps.
- Secure the housing with the screws set aside in step 4.2.
8 ATTACHING THE FRONT PANEL
- For models with a built-in thermostat: Clip the connector [A] under the thermostat and pass the cable under the hook [B] for strain relief.
- Press the top of the front panel against the wall, keeping it slightly tilted [C] and centered with the mechanical housing.
- Carefully slide the front panel down until the hooks [D] behind it engage, then pivot it toward the wall.
- Ensure the screw at the bottom of the unit is inserted into the front panel's slot [E]. Tighten the screw to secure the front panel.
9 TURNING THE POWER BACK ON
Restore power to the fan heater. Raise the temperature until the unit heats to confirm operation. Refer to the "Using the Fan Heater" section for optimal use.
WARNING: Immediately set the wall thermostat to fan heater mode upon restoring power. If the thermostat remains in baseboard mode, the fan heater may run intermittently and overheat.
USING THE FAN HEATER
WARNING: Ensure proper installation by a certified electrician according to local codes before use. Do not operate without the front panel.
This section describes controlling the fan heater with its built-in electronic thermostat (ASSOS.....MW and ASSOS.....W models). Features common to both thermostats are in white text; MAESTRO smart thermostat features are in shaded text.
BUILT-IN THERMOSTAT INTERFACE
Controls:
- Zigbee connectivity icon (smart thermostat models only).
- Unit overheating icon.
- Advance menu icon.
- Buttons to raise/lower temperature setpoint or navigate menus.
- Keypad lock icon.
- Low temperature setpoint icon.
- Temperature or menu number.
- Display backlighting menu indicator (smart thermostat models only).
- Heating power segments: Indicate heating level from 0% (0 segments) to 100% (5 segments).
Buttons are illuminated in different colors to provide information, especially regarding energy consumption:
- Green: Temperature setpoint focused on energy saving.
- Between green and red: Setpoint balances energy saving and comfort.
- Red: Comfort-oriented temperature setpoint.
- Blue and flashing: Open window detected.
- White: Browsing advanced menus.
- Grey: Screen inactive for 15 seconds, Nightlight mode deactivated.
DEFINE THE FAN HEATER'S TEMPERATURE SETPOINT
Use the two buttons to set the temperature. Default is 66°F.
- Press +/- once; the setpoint will flash.
- Use +/- to adjust the setpoint. Holding a button for over 1 second changes the temperature rapidly.
- Release the button when the desired setpoint is reached. It will flash for 3 seconds before saving.
The ambient temperature displays after saving. The [heating power indicator] shows the intensity of operation. The [low setpoint icon] appears if the setpoint is 45°F or lower.
NAVIGATING THE ADVANCED MENUS
Access advanced menus to configure settings:
- Access advanced menus: Hold [+] and [-] simultaneously for 3 seconds.
- Navigate menus: Use [+] or [-] to select options.
- Confirm selection: Press [+] and [-] simultaneously.
- Quit advanced menus: Hold [+] and [-] simultaneously for 3 seconds.
MAESTRO BUILT-IN ELECTRONIC SMART THERMOSTAT MENUS
- Menu 1: Zigbee connection settings.
- Menu 2: Temperature display unit settings (°C or °F).
- Menu 3: Nightlight mode (backlight settings).
- Menu 4: Locking/Unlocking keypad settings.
- Menu 5: Open window detection settings.
- Menu 6: Type of installation settings (In-wall/Surface).
- Menu 7: STELPRO information (version, date, month, year manufactured, reset to default).
NON-CONNECTED BUILT-IN ELECTRONIC THERMOSTAT MENUS
- Menu 1: Temperature display unit settings (°C or °F).
- Menu 2: Locking/Unlocking keypad.
- Menu 3: Type of installation settings (In-wall/Surface).
- Menu 4: STELPRO information (version, date, month, year manufactured, reset to default).
Connecting the thermostat to your Zigbee network
Connect to a Zigbee smart home network using the MAESTRO smart controller-thermostat or a compatible controller.
- Access menu 1, Zigbee connection.
- Select auto-connect (ON) or your Zigbee network channel.
- Confirm selection. The selection flashes rapidly, and the [Zigbee icon] lights up upon successful connection. The channel number displays. An "Err" message indicates connection failure.
Disconnecting the thermostat from the Zigbee network
To disconnect, if controllers or channels change:
- Access menu 1, Zigbee connection.
- Select the OFF option.
- Confirm selection. "OFF" flashes rapidly, and the [Zigbee icon] lights up. "OFF" displays upon completion.
Selecting the temperature display unit (°C or °F)
By default, temperature displays in Fahrenheit. To change:
- Access the temperature display menu.
- Select °C or °F.
- Confirm selection.
Configuring the Nightlight mode
The screen and buttons are backlit. You can configure Nightlight mode for button/display behavior after 15 seconds of inactivity:
- Access menu 3, Nightlight mode setting.
- Select:
- ALL: Buttons illuminated, screen backlight dims.
- BTN: Buttons illuminated, screen backlight turns off.
- OFF: Buttons grey, screen backlight turns off.
- Confirm selection.
Note: Backlight remains at 100% if there's a Zigbee network problem, an open window, or overheating detected.
Locking or unlocking the built-in thermostat's keypad
Lock the keypad to prevent direct setpoint changes. The [keypad lock icon] appears when locked. You can still change settings via an app.
- Access the Locking/Unlocking keypad menu.
- Select ON to lock or OFF to unlock.
- Confirm selection.
Activating or deactivating open window detection
The thermostat can detect an open window and automatically set the temperature to 45°F to avoid unnecessary heating. The [open window icon] and buttons flash blue when detected. The setpoint returns to normal when the window is closed.
- Access menu 5, Open window detection.
- Select ON to activate or OFF to deactivate.
- Confirm selection.
Selecting the type of installation (in-wall or surface)
The default setting is in-wall (IN). Change to SUR for surface mounting to ensure optimal temperature control.
- Access the Type of installation menu.
- Select IN or SUR.
- Confirm selection.
Resetting the thermostat to its default settings
WARNING: All settings and Zigbee connection will be deleted.
- Access the STELPRO menu.
- Press [+] and [-] simultaneously to access the sub-menu.
- Press [-] to access the reset sub-menu.
- When "DEF" appears, press [+] and [-] simultaneously.
- Select YES.
- Confirm selection.
The thermostat will reconfigure with default settings.
ALERT DISPLAYED ON THE BUILT-IN THERMOSTAT'S SCREEN
| ALERT | POSSIBLE CAUSE AND SOLUTION | ALERT | POSSIBLE CAUSE AND SOLUTION |
|---|---|---|---|
| LO | The fan heater is overheating, and thermal protection has tripped. OR The room temperature is below 32°F. Heating remains active until the setpoint is reached. The LO message disappears when the temperature reaches 32°F. | flashing | The thermostat has detected an open window. Close the window or deactivate open window detection. |
| HI | The room temperature exceeds 122°F. Heating remains inactive. The HI message disappears when the temperature reaches 122°F. | ||
| - | The thermostat cannot measure temperature (defective sensor). Heating remains inactive. Contact STELPRO Customer Service. | flashing | There's a problem with the thermostat's Zigbee network. Reset and reconnect the thermostat to your Zigbee network. See Resetting the thermostat to its default settings (page 13) and Connecting the thermostat to your Zigbee network (page 12). |
| E1 | The auxiliary temperature sensor is defective. The device will still control temperature, but not optimally. Contact STELPRO Customer Service. | ||
| Err | The Zigbee network connection has failed. Ensure the device is close enough to the controller and the controller is in "Connection" mode. Try connecting again. |
TROUBLESHOOTING THE FAN HEATER
If your problem is not listed or the solution doesn't work, turn off power and contact customer service.
| PROBLEM/ALERT | POSSIBLE CAUSE AND SOLUTION | PROBLEM/ALERT | POSSIBLE CAUSE AND SOLUTION |
|---|---|---|---|
| The fan heater is not operational after installation. |
| Heating is not operational. |
|
| The breaker goes off when the fan heater starts. |
| ||
| The temperature setpoint is never reached. |
| Heating stops, but the fan continues to run. |
|
| The fan heater is operating continuously. |
| With a wall thermostat: the fan heater turns on and off frequently. |
|
| The ambient temperature is too high. |
| With a wall thermostat: the fan heater makes a buzzing sound. |
|
RESTARTING THE FAN HEATER AFTER THE THERMAL PROTECTION IS TRIGGERED
Overheating triggers thermal protection, switching off heating but continuing ventilation. To resume normal operation:
- Identify and eliminate the cause of overheating (e.g., obstructions in air inlets/outlets).
- Ensure the fan heater has not suffered heat damage.
- Switch off power supply from the electrical panel.
- Wait ten minutes, then turn power back on.
If heating does not resume, an internal component may be defective or an additional thermal protection device may have been triggered. Contact STELPRO customer service.
MAINTAINING THE FAN HEATER
For warranty validity, regularly clean the fan heater's air inlet and outlet.
WARNING: Turn off power at the breaker or fuse before cleaning. High voltage is present even when the thermostat is set to OFF.
Cigarette smoke may yellow the outlet grill over time. Clean the unit regularly to prevent yellowing. Dust the front panel with a soft cloth and clean with a damp cloth only. Cleaning products may cause yellowing.
In dusty locations, use a vacuum cleaner's dust brush to remove dust and foreign objects.
When maintaining the product, never use:
- A brush or metal scrubbing pad
- Chlorine
- Abrasive cleaning products
- Hydrochloric acid-based products (e.g., bleach)
- Other cleaning products bearing specific hazard symbols.
TECHNICAL INFORMATIONS
| ITEM | DESCRIPTION |
|---|---|
| Purpose of Control | Thermostat |
| Degree of Protection by enclosure | IP20 |
| Nature of Supply | Control for AC |
| Type of Load Controlled | Circuit suitable for resistive or inductive loads with a power factor not less than 0.6, or a combination. |
| Type 1 of Type 2 action + Additional features | Type 1.Y: ELECTRONIC DISCONNECTION on OPERATION |
| Control Pollution Degree | PD2 |
| Unique Type Reference (UTR), Rated Voltage / Watts |
|
| Frequency | 60Hz |
| Intended Delivery Location | Control intended exclusively for the equipment manufacturer (STELPRO). Not sold separately as a replacement kit. |
| Overcurrent protective device external to the control | A breaker is used as the protective device. For 120Vac, use a Single Pole 15A breaker; For 208Vac and 240Vac, use a Double Pole 20A breaker. |
| Operating Temperature | -20°C to 50°C |
| Storage Temperature | -40°C to 50°C |
STELPRO LIMITED WARRANTY
This limited warranty is offered by STELPRO Design inc. ("STELPRO") for the STELPRO ASSOS model. It covers defects in workmanship and/or materials for 5 years from the purchase date (3 years on electronic components). This warranty is non-transferable and applies only to the original purchaser.
CLAIM PROCEDURE: If the unit becomes defective during the warranty period, cut off power supply and contact your installer, service center, or STELPRO customer service. Provide a copy of the invoice and product nameplate information. STELPRO may examine the product before honoring the warranty and reserves the right to replace, refund, or repair the unit. Repairs must be authorized in writing by STELPRO and performed by authorized personnel. Obtain an RMA number from STELPRO customer service (1-844-STELPRO) before returning any product; the number must be clearly written on the parcel.
CONDITIONS, EXCLUSIONS AND DISCLAIMER OF LIABILITY: This warranty is exclusive and replaces all other warranties. STELPRO disclaims implied warranties of merchantability and fitness for a particular purpose. STELPRO's liability is limited to repair, replacement, or refund. STELPRO is not liable for other obligations or liabilities, including property or personal injury damages, lost profits, cost of capital, or economic loss. STELPRO expressly disclaims all consequential, incidental, and contingent damages.
This warranty does not cover damages from faulty installation, improper storage, abusive use, lack of maintenance, natural disasters, overvoltage, flooding, water damage, negligence, or intentional losses. It also does not cover the cost of disconnection, transport, or installation.
Parts replaced or repaired under warranty are covered for the remainder of the original warranty period. The warranty is void if products are altered without STELPRO's written authorization or if nameplate numbers are removed/modified. Cosmetic damage (scratches, dents, corrosion, discoloration) and shipping damage are not covered.
Some states/provinces may not allow exclusion/limitation of incidental/consequential damages or limitations on implied warranty duration. This warranty grants specific legal rights which may vary by location.
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