Introduction
This manual provides detailed instructions for the safe and efficient operation of your ClassicFlame 33II310GRA 33-inch Infrared Quartz Fireplace Insert. Please read all instructions carefully before installation and use, and retain this manual for future reference.
The ClassicFlame 33II310GRA is designed to provide supplemental zone heating for areas up to 1,000 square feet. It features a tempered glass front, Spectrafire Plus flame effects, and Safer Plug fire prevention technology.
Important Safety Information
WARNING: To reduce the risk of fire, electric shock, or injury, observe the following precautions:
- Read all instructions before using this fireplace insert.
- This appliance is hot when in use. To avoid burns, do not let bare skin touch hot surfaces. Keep combustible materials, such as furniture, pillows, bedding, papers, clothes, and curtains, at least 3 feet (0.9 m) from the front of the heater and keep them away from the sides and rear.
- Extreme caution is necessary when any heater is used by or near children or invalids and whenever the heater is left operating and unattended.
- Do not operate any heater with a damaged cord or plug, or after the heater malfunctions, has been dropped, or damaged in any manner. Return heater to authorized service facility for examination, electrical or mechanical adjustment, or repair.
- Do not use outdoors.
- This heater is not intended for use in bathrooms, laundry areas, and similar indoor locations. Never locate heater where it may fall into a bathtub or other water container.
- Do not run cord under carpeting. Do not cover cord with throw rugs, runners, or similar coverings. Arrange cord away from traffic area and where it will not be tripped over.
- To disconnect heater, turn controls to off, then remove plug from outlet.
- Do not insert or allow foreign objects to enter any ventilation or exhaust opening as this may cause an electric shock or fire, or damage the heater.
- To prevent a possible fire, do not block air intakes or exhaust in any manner. Do not use on soft surfaces, like a bed, where openings may become blocked.
- All electrical heaters have hot and arcing or sparking parts inside. Do not use it in areas where gasoline, paint, or flammable vapors or liquids are used or stored.
- Use this heater only as described in this manual. Any other use not recommended by the manufacturer may cause fire, electric shock, or injury to persons.
- Always plug heaters directly into a wall outlet/receptacle. Never use with an extension cord or relocatable power tap (outlet/power strip).
- The Safer Plug technology is designed to prevent electrical fires. If the plug detects an unsafe temperature, it will automatically shut off power to the unit.
Package Contents
Carefully remove all components from the packaging and inspect for any damage. If any parts are missing or damaged, do not attempt to assemble or operate the unit. Contact customer support for assistance.
- ClassicFlame 33II310GRA 33-inch Infrared Quartz Fireplace Insert
- Remote Control (requires 2 AAA batteries, included)
- User Manual (this document)
Setup and Installation
Unpacking
Remove the fireplace insert from its packaging. Ensure all packing materials are removed from the unit before use. Keep plastic bags away from children.
Placement
- This fireplace insert is designed for indoor use only.
- Ensure the unit is placed on a firm, level surface.
- Maintain a minimum clearance of 3 feet (0.9 m) from the front, sides, and rear of the unit to any combustible materials such as drapes, furniture, bedding, or other flammable items.
- Do not block the air intake or exhaust vents.
- This insert can be used in conjunction with ClassicFlame mantels, TV stands with insert capacity, or flush-mount trim kits (all sold separately). Follow the installation instructions provided with those accessories.
Electrical Connection
- Ensure the power cord is not pinched or routed in a way that could cause damage.
- Plug the fireplace insert directly into a 120V, 15 Amp grounded outlet. Do not use an extension cord or power strip.
- The unit is equipped with Safer Plug technology, which monitors the plug's temperature to prevent overheating. If the plug becomes too hot, it will automatically shut off power.
Remote Control Battery Installation
- Locate the battery compartment on the back of the remote control.
- Insert two (2) AAA batteries, ensuring correct polarity (+/-).
- Replace the battery compartment cover.
Operating Instructions
The fireplace insert can be operated using the control panel on the unit or the included remote control.
Control Panel and Remote Functions
Refer to the images below for visual reference of the fireplace insert and its flame effects.

Image: ClassicFlame 33II310GRA Fireplace Insert displaying blue and purple flame effects with glowing logs and ember bed. The unit features a black frame and faux brick interior panels.

Image: ClassicFlame 33II310GRA Fireplace Insert showing warm orange and yellow flame effects. A digital display on the upper right indicates a temperature setting of 72 degrees Fahrenheit, along with icons for flame, heat, and timer functions.

Image: Front view of the ClassicFlame 33II310GRA Fireplace Insert, showcasing blue flame effects. The unit's black exterior and realistic log set are visible, with a red heating element strip at the top.
- Power Button: Turns the unit ON or OFF.
- Heat Function: Activates the 5,200 BTU infrared quartz heater. The adjustable thermostat allows you to set the desired room temperature. The heater provides supplemental zone heating for up to 1,000 square feet.
- Flame Effect: The Spectrafire Plus technology offers 125 selectable flame effect options.
- Flame Speed: Adjusts the speed of the flame from a fast roar to a gentle flicker (5 settings).
- Flame Brightness: Adjusts the intensity of the flame (5 settings).
- Flame Colors: Select from Spectrafire, Sapphire, Amethyst, Campfire, Midnight Fire, or an auto-cycle mode.
- Timer Function: Sets an automatic shut-off time for the unit, ranging from 30 minutes up to 9 hours.
- Heat Without Flame: The flame effect can be operated independently of the heat function, allowing for ambiance without heating.
- Flame Without Heat: The heat function can be operated independently of the flame effect, providing heat without visual flames.
Maintenance
Regular maintenance ensures the longevity and safe operation of your fireplace insert.
- Cleaning:
- Always disconnect power before cleaning.
- Wipe the exterior surfaces with a soft, damp cloth. Do not use abrasive cleaners or sprays.
- Gently clean the glass front with a soft cloth and glass cleaner.
- Periodically vacuum the air intake and exhaust vents to remove dust and debris.
- Light Bulbs: The flame effect uses long-lasting LED technology and does not require bulb replacement.
- Storage: If storing the unit for an extended period, unplug it and store it in a dry, dust-free location.
Troubleshooting
If you experience issues with your fireplace insert, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not turn on. | No power to the outlet; Safer Plug activated; Unit is off. | Check circuit breaker. Ensure plug is fully inserted. Unplug and re-plug the unit to reset Safer Plug. Press the power button. |
| No heat output. | Heat function is off; Thermostat set too low; Air vents blocked. | Activate the heat function. Increase the thermostat setting. Ensure air intake and exhaust vents are clear. |
| Flame effect not working. | Flame effect is off. | Activate the flame effect function. |
| Remote control not working. | Dead batteries; Obstruction between remote and unit; Remote sensor blocked. | Replace AAA batteries. Ensure clear line of sight to the unit's sensor. Clear any obstructions from the unit's sensor. |
If the problem persists after attempting these solutions, contact customer support.
Specifications
| Feature | Detail |
|---|---|
| Model Number | 33II310GRA |
| Brand | ClassicFlame |
| Power Source | Corded Electric |
| Voltage | 120V |
| Heat Output | 5,200 BTU |
| Heating Coverage | Up to 1,000 sq ft |
| Heating Element | Infrared Quartz |
| Material | Glass, Quartz |
| Installation Type | Wall Mount (Insert) |
| Ventilation Type | Vent Free |
| Special Features | Adjustable Thermostat, Timer, Spectrafire Plus Flame Effects, Safer Plug |
| Flame Effects | 5 Speed, 5 Brightness, 5 Colors (Spectrafire, Sapphire, Amethyst, Campfire, Midnight Fire, Auto Cycle) |
| Timer Range | 30 minutes to 9 hours |
| Item Weight | 48 Pounds |
| Chamber Depth | 9.5 Inches |
| Remote Control Batteries | 2 AAA (included) |
Warranty Information
The manufacturer, Twin Star International, Inc., warrants that your new electric fireplace is free from manufacturing and material defects for a period of one year from the date of purchase. This warranty is subject to the conditions and limitations listed in the owner's manual. Please retain your proof of purchase for warranty claims.
Customer Support
For technical assistance, missing parts, or warranty inquiries, please contact the manufacturer, Twin Star International, Inc. Refer to the contact information provided in your product packaging or on the manufacturer's official website.
When contacting support, please have your model number (33II310GRA) and proof of purchase readily available.