Dimplex 28 Inch Optimyst Aura Water Vapor Fireplace - 3STEP-RGB-AM
Dimplex Optimyst Aura 28-inch Water Vapor Fireplace
The Optimyst Aura 28″ (Model 3STEP-RGB-AM, 500003866) is a premium built-in water-vapor fireplace that offers ultra-realistic 3D flame effects via vapor and LED, with a pull-out refill drawer (no plumbing), and a fan-forced heater for optional warmth.
Designed with versatility in mind (one-, two- or three-sided installations), its cool-touch front, tempered glass, and modern aesthetics make it suitable for both contemporary and classic settings.
- Water vapor flame & smoke effect; multiple colors + sound options
- Pull-out water drawer; refill manually; no plumbing required
- Built-in heater (fan-forced) warms up to ~1,000 sq ft; flame-only mode available
- Tempered glass front; cool-to-touch safety design
Quick Facts
- BTU: ~4,350 BTU
- Watts: 1,275 W
- Dimensions (W×H×D): ~30″ W × 29.18″ H × 15.92″ D
- Product Weight: ~143 lb
- Voltage: 120 V
- Warranty: 2-Year Limited Manufacturer Warranty
Technical Specifications
| Brand | Dimplex |
|---|---|
| Model | Optimyst Aura 28 (3STEP-RGB-AM / 500003866) |
Performance
| Heat Output | 1,275 W / ~4,350 BTU |
|---|---|
| Heating Capacity | Up to ~1,000 sq ft (heater on); flame-only mode when off |
| Controls | Remote control, Flame Connect App, hidden panel controls |
| Installation Options | One-sided, two-sided, or three-sided / fully recessed or partial configurations |
| Fuel / Flame Technology | Water vapor + LED “Optimyst” flame effect |
Materials & IDs
| Dimensions (W×H×D) | ~30″ × 29.18″ × 15.92″ |
|---|---|
| Practical Framing (Min.) | Width ~30-3/8″, Height ~29-1/2″, Depth ~15-15/16″ |
| Weight | ≈ 143 lb |
| Electrical Supply | 120 V |
| Warranty Term | 2 years limited |
| Certifications | UL / CSA listed |
Documents (PDF): Owner’s & Installation Manual (PDF) · Spec Sheet (PDF)
FAQs
Can the flame effect work without heat?
Yes — flame and vapor effects operate independently; you can use flame-only mode.
Is plumbing required?
No — the Aura includes a pull-out water drawer; refill needed but no plumbing.
What are the installation options?
Supports one-, two- or three-sided installation, and recessed or partial recess configurations.
How large a space can it heat?
With heater on, up to ~1,000 sq ft. For ambiance only, flame-only mode uses less energy.
What are the safety features?
Front glass stays cool; tempered glass and safe touch design; UL / CSA certifications; automatic shut-off if water drawer is low.
What is the warranty?
2-Year Limited Manufacturer’s Warranty.
Warranty
Dimplex Optimyst Aura 28″ (3STEP-RGB-AM / 500003866) — Manufacturer warranty: 2-Year Limited.
Coverage
| Component | Term | Notes |
|---|---|---|
| All electrical & flame / vapor / heater components | 2 years | Defects in materials or workmanship under normal residential use. Covers original purchaser. See manual for full details. |
Exclusions & Conditions
- Damage from misuse, improper installation or modification voids warranty.
- Original purchaser only; proof of purchase required.
- Warranty doesn’t cover labor, shipping, or water/vapor parts degraded by hard water unless cleaned regularly.
Manuals & Installation
- Owner’s & Installation Manual: Download (PDF)
- Spec Sheet: Download (PDF)
Pre-Install Checklist
- Ensure framing opening meets minimum: ~30-3/8″ W × 29-1/2″ H × 15-15/16″ D (allow for recessed or partial configurations).
- Provide a standard 120 V circuit. Confirm local electrical code compliance.
- Allow for proper fresh air inlets: minimum top intake ~29 in²; bottom intake under drawer; ensure airflow under unit.
- Verify wall structure can support ~143 lb unit weight.
- Ensure front is accessible, glass and control panel are unobstructed.
Compliance & Safety
Install per manufacturer’s instructions and local codes. UL/CSA listed file number E71416. Avoid obstructing vents or water drawer. Surfaces are safe to touch, but heater outlet and exhaust surfaces may warm — minimize contact and keep out of reach of children.
Use only clean water in reservoir; regular maintenance required especially in hard-water regions. Do not move/transport with water inside. Disconnect power before servicing.