Finnleo Designer B Series Sauna Heater Specifications

This document contains comprehensive statistical information for each of the three Finnleo Designer B Series sauna heater models, organized by individual heater specifications.

Designer 4.5B Specifications

Basic Information

Specification	Value
Model Name	Designer 4.5B
Product Number	1712-45-17
Power Rating	4.5 kW
Heating Elements	3 × 1500W elements
Total Elements	3

Room Size Requirements

Measurement	Minimum	Maximum
Floor Area	12 sq ft	74 sq ft
Room Volume	74 cu ft	100 cu ft
Ceiling Height	74 inches	96 inches

Safety Clearances (Minimum Distances)

Direction	Distance
Front Clearance	3.0 inches
Side Clearance	3⅝ inches
Back Clearance	4.0 inches
Top Clearance	10¾ inches
Guard Rail Height	23 inches

Electrical Requirements – Single Phase

Voltage	Amperage	Wire Size Required
208V	21.6 A	10-2 W/G
240V	18.8 A	10-2 W/G

Electrical Requirements – Three Phase

Voltage	Amperage	Wire Size Required
208V	12.5 A	12-3 W/G
240V	10.8 A	12-3 W/G

Power Distribution Chart (Text-Based)

Designer 4.5B Power Elements:

Element 1: ████████████████████ 1500W (33.3%)

Element 2: ████████████████████ 1500W (33.3%)

Element 3: ████████████████████ 1500W (33.3%)

Total:     ████████████████████████████████████████████████████████ 4500W (100%)

 

Designer 6.0B Specifications

Basic Information

Specification	Value
Model Name	Designer 6.0B
Product Number	1712-60-17
Power Rating	6.0 kW
Heating Elements	3 × 2000W elements
Total Elements	3

Room Size Requirements

Measurement	Minimum	Maximum
Floor Area	21 sq ft	175 sq ft
Room Volume	74 cu ft	175 cu ft
Ceiling Height	74 inches	96 inches

Safety Clearances (Minimum Distances)

Direction	Distance
Front Clearance	4.0 inches
Side Clearance	4⅝ inches
Back Clearance	5.0 inches
Top Clearance	10¾ inches
Guard Rail Height	23 inches

Electrical Requirements – Single Phase

Voltage	Amperage	Wire Size Required
208V	28.8 A	8-2 W/G
240V	25.0 A	10-2 W/G

Electrical Requirements – Three Phase

Voltage	Amperage	Wire Size Required
208V	16.7 A	12-3 W/G
240V	14.4 A	12-3 W/G

Power Distribution Chart (Text-Based)

Designer 6.0B Power Elements:

Element 1: ██████████████████████████ 2000W (33.3%)

Element 2: ██████████████████████████ 2000W (33.3%)

Element 3: ██████████████████████████ 2000W (33.3%)

Total:     ██████████████████████████████████████████████████████████████████████████ 6000W (100%)

Designer 8.0B Specifications

Basic Information

Specification	Value
Model Name	Designer 8.0B
Product Number	1712-80-17
Power Rating	8.0 kW
Heating Elements	3 × 2670W elements
Total Elements	3

Room Size Requirements

Measurement	Minimum	Maximum
Floor Area	31 sq ft	250 sq ft
Room Volume	74 cu ft	250 cu ft
Ceiling Height	74 inches	96 inches

Safety Clearances (Minimum Distances)

Direction	Distance
Front Clearance	5.0 inches
Side Clearance	5⅝ inches
Back Clearance	6.0 inches
Top Clearance	11½ inches
Guard Rail Height	23 inches

Electrical Requirements – Single Phase

Voltage	Amperage	Wire Size Required
208V	38.5 A	8-2 W/G
240V	33.3 A	8-2 W/G

Electrical Requirements – Three Phase

Voltage	Amperage	Wire Size Required
208V	22.2 A	10-3 W/G
240V	19.2 A	10-3 W/G

Power Distribution Chart (Text-Based)

Designer 8.0B Power Elements:

Element 1: ████████████████████████████████████ 2670W (33.4%)

Element 2: ████████████████████████████████████ 2670W (33.4%)

Element 3: ████████████████████████████████████ 2670W (33.2%)

Total:     ████████████████████████████████████████████████████████████████████████████████████████████████ 8010W (100%)

Model Comparison Charts

Power Rating Comparison

Power Output Comparison:

Designer 4.5B: ████████████████████████████████████████████████ 4.5 kW

Designer 6.0B: ████████████████████████████████████████████████████████████████ 6.0 kW  

Designer 8.0B: ████████████████████████████████████████████████████████████████████████████████ 8.0 kW

Scale: Each █ = 0.1 kW

Room Capacity Comparison (Maximum Floor Area)

Maximum Floor Area Capacity:

Designer 4.5B: ███████ 74 sq ft

Designer 6.0B: ███████████████████ 175 sq ft

Designer 8.0B: ███████████████████████████ 250 sq ft

Scale: Each █ = 10 sq ft

Electrical Load Comparison (240V Single Phase)

Amperage Requirements (240V Single Phase):

Designer 4.5B: ███████████████████ 18.8 A

Designer 6.0B: █████████████████████████ 25.0 A

Designer 8.0B: █████████████████████████████████ 33.3 A

Scale: Each █ = 1 Amp

Detailed Statistical Analysis

Room Size Efficiency Ratios

Designer 4.5B

Metric	Value	Calculation
Power per sq ft (min)	0.375 kW/sq ft	4.5 kW ÷ 12 sq ft
Power per sq ft (max)	0.061 kW/sq ft	4.5 kW ÷ 74 sq ft
Power per cu ft (min)	0.061 kW/cu ft	4.5 kW ÷ 74 cu ft
Power per cu ft (max)	0.045 kW/cu ft	4.5 kW ÷ 100 cu ft

Designer 6.0B

Metric	Value	Calculation
Power per sq ft (min)	0.286 kW/sq ft	6.0 kW ÷ 21 sq ft
Power per sq ft (max)	0.034 kW/sq ft	6.0 kW ÷ 175 sq ft
Power per cu ft (min)	0.081 kW/cu ft	6.0 kW ÷ 74 cu ft
Power per cu ft (max)	0.034 kW/cu ft	6.0 kW ÷ 175 cu ft

Designer 8.0B

Metric	Value	Calculation
Power per sq ft (min)	0.258 kW/sq ft	8.0 kW ÷ 31 sq ft
Power per sq ft (max)	0.032 kW/sq ft	8.0 kW ÷ 250 sq ft
Power per cu ft (min)	0.108 kW/cu ft	8.0 kW ÷ 74 cu ft
Power per cu ft (max)	0.032 kW/cu ft	8.0 kW ÷ 250 cu ft

Clearance Requirements Comparison

Model	Front	Side	Back	Top	Guard Rail
Designer 4.5B	3.0″	3⅝”	4.0″	10¾”	23″
Designer 6.0B	4.0″	4⅝”	5.0″	10¾”	23″
Designer 8.0B	5.0″	5⅝”	6.0″	11½”	23″

Clearance Progression Chart

Front Clearance Progression:

Designer 4.5B: ███ 3.0″

Designer 6.0B: ████ 4.0″

Designer 8.0B: █████ 5.0″

Side Clearance Progression:

Designer 4.5B: ████ 3⅝”

Designer 6.0B: █████ 4⅝”

Designer 8.0B: ██████ 5⅝”

Back Clearance Progression:

Designer 4.5B: ████ 4.0″

Designer 6.0B: █████ 5.0″

Designer 8.0B: ██████ 6.0″

Scale: Each █ = 1 inch

Wire Size Requirements Summary

Single Phase Installations

Model	208V Wire	240V Wire	208V Amps	240V Amps
Designer 4.5B	10-2 W/G	10-2 W/G	21.6 A	18.8 A
Designer 6.0B	8-2 W/G	10-2 W/G	28.8 A	25.0 A
Designer 8.0B	8-2 W/G	8-2 W/G	38.5 A	33.3 A

Three Phase Installations

Model	208V Wire	240V Wire	208V Amps	240V Amps
Designer 4.5B	12-3 W/G	12-3 W/G	12.5 A	10.8 A
Designer 6.0B	12-3 W/G	12-3 W/G	16.7 A	14.4 A
Designer 8.0B	10-3 W/G	10-3 W/G	22.2 A	19.2 A

Amperage Reduction with Three Phase

Amperage Savings (240V Single vs Three Phase):

Designer 4.5B: 18.8A → 10.8A (42% reduction)

Designer 6.0B: 25.0A → 14.4A (42% reduction)

Designer 8.0B: 33.3A → 19.2A (42% reduction)

Savings Chart:

4.5B: ████████████████████ Single Phase vs ███████████ Three Phase

6.0B: █████████████████████████ Single vs ██████████████ Three Phase

8.0B: █████████████████████████████████ Single vs ███████████████████ Three Phase

Scale: Each █ = 1 Amp

Installation Requirements Summary

Common Requirements (All Models)

• ETL approved by Intertek
• Copper wire only (minimum 90°C rating)
• Must be grounded per NEC
• Built-in splash proof construction
• 9+1 hour timer with delay function
• Variable thermostat control
• High limit safety control with reset

Model-Specific Installation Notes

Designer 4.5B (1712-45-17)

• Ideal for: Small residential saunas, guest houses
• Installation complexity: Basic
• Electrical requirements: Standard residential
• Recommended room size: 12-50 sq ft for optimal performance

Designer 6.0B (1712-60-17)

• Ideal for: Standard home saunas, moderate commercial use
• Installation complexity: Moderate
• Electrical requirements: May require electrical upgrade
• Recommended room size: 21-120 sq ft for optimal performance

Designer 8.0B (1712-80-17)

• Ideal for: Large residential, commercial installations
• Installation complexity: Advanced
• Electrical requirements: Likely requires electrical upgrade
• Recommended room size: 31-180 sq ft for optimal performance

Performance Specifications

Heating Element Details

Model	Element Type	Quantity	Individual Power	Total Power
Designer 4.5B	1500W	3	1500W each	4500W total
Designer 6.0B	2000W	3	2000W each	6000W total
Designer 8.0B	2670W	3	2670W each	8010W total

Temperature Control Features

• Timer: 9-hour delay + 1-hour operation
• Thermostat: Variable temperature control
• High Limit: Automatic safety shutoff
• Reset: Manual reset capability
• Controls: Relocatable (front or sides)

Maintenance Schedule

All Models

Frequency	Task
Daily	Inspect controls are off
Weekly	Clean room (if daily use)
Monthly	Wipe heater with damp cloth
Annually	Remove/clean rocks, inspect structure
As needed	Replace deteriorated components

Designer B Series Sauna Heater – Frequently Asked Questions

1. What are the different models available and what room sizes do they accommodate?

Answer: The Designer B Series offers three models:

• Designer 4.5B (4.5 kW): Suitable for rooms with 12-74 sq ft floor area and 74-100 cubic feet volume
• Designer 6.0B (6.0 kW): Suitable for rooms with 21-175 sq ft floor area and 74-175 cubic feet volume
• Designer 8.0B (8.0 kW): Suitable for rooms with 31-250 sq ft floor area and 74-250 cubic feet volume

All models can accommodate ceiling heights from 74″ minimum to 96″ maximum.

2. What electrical requirements do I need for installation?

Answer: The electrical requirements vary by model and voltage:

Designer 4.5B:

• Single phase: 208V (21.6 amps) or 240V (18.8 amps) – requires 10-2 wire with ground
• Three phase: 208V (12.5 amps) or 240V (10.8 amps) – requires 12-3 wire with ground

Designer 6.0B:

• Single phase: 208V (28.8 amps) requires 8-2 wire, 240V (25 amps) requires 10-2 wire
• Three phase: 208V (16.7 amps) or 240V (14.4 amps) – requires 12-3 wire with ground

Designer 8.0B:

• Single phase: 208V (38.5 amps) or 240V (33.3 amps) – requires 8-2 wire with ground
• Three phase: 208V (22.2 amps) requires 10-3 wire, 240V (19.2 amps) requires 10-3 wire

All installations must use copper wire only, suitable for minimum 90°C, and must be grounded per NEC requirements.

3. What are the minimum clearance requirements for safe installation?

Answer: Minimum clearances to combustible materials vary by model:

Designer 4.5B:

• Front: 3.0″, Sides: 3⅝”, Back: 4.0″, Top: 10¾”, Guard rail height: 23″

Designer 6.0B:

• Front: 4.0″, Sides: 4⅝”, Back: 5.0″, Top: 10¾”, Guard rail height: 23″

Designer 8.0B:

• Front: 5.0″, Sides: 5⅝”, Back: 6.0″, Top: 11½”, Guard rail height: 23″

Additionally, maintain minimum 44″ clearance from ceiling above heater and 2″ minimum clearance from heater to wooden surfaces like benches and side walls.

4. How do I properly place the rocks in the heater?

Answer: Proper rock placement is critical for safe operation:

1. Use only the rocks supplied with the heater (other types may void warranty)
2. Rinse rocks with water before placing
3. Place smaller rocks first around the outer perimeter
4. Fill all four sections: front, two center sections between elements, and back
5. Place rocks loosely to allow air circulation – packing too tightly may trip the high limit switch
6. Rocks must completely cover all heating elements
7. Cover element tops with minimum 2-3″ of rocks
8. Never operate the heater without rocks in place
9. Install the guard rail with provided screws after rock placement

5. How does the timer system work?

Answer: The heater features a “9 plus 1” timer system:

Immediate Operation: Turn the dial clockwise past the “off to 1” section, then turn back counter-clockwise until you hear a “click” near the “on” position. This puts it in the one-hour operating zone for immediate heating.

Delayed Start: Set the timer dial anywhere in the “1 to 9” zone to delay the start by up to 9 hours. The heater will automatically turn on after the selected delay time.

Operating Zone: The area from “OFF” to “ON” is when the heater actually operates. The “9” to “ON” area is the delay zone where the heater will not operate but is programmed to start later.

6. What should I do if the high limit control keeps shutting off the heater?

Answer: If the high limit control repeatedly trips:

1. Immediate Reset: Turn timer to zero (off), let heater cool, then press the reset button on the bottom of the heater
2. Check Rock Placement: Improperly placed or deteriorated rocks are the most common cause. Rocks may have broken down over time, reducing airflow
3. Rock Maintenance: Remove rocks that are smaller than 2″ pieces and ensure proper loose placement per Diagram 10 in the manual
4. Ventilation Check: Ensure proper room ventilation (6 air changes per hour) and that vents aren’t blocked
5. Professional Service: If the problem persists after checking rocks and ventilation, contact service at 1-888-780-4427

7. What maintenance is required to keep the heater operating properly?

Answer: Regular maintenance includes:

Daily: Inspect that controls and system are off at end of each day

Weekly: For daily-use saunas, wash down the room to keep clean and air fresh

Monthly: Wipe down heater with damp cloth to remove lint and dust

Annually:

• Remove and clean rocks, replacing any that are crumbled or smaller than 2″
• Inspect benches and supporting structures for deterioration, dry rot, or abuse
• Replace any deteriorated boards immediately

General Cleaning: Use soap or detergent in warm water with scrub brush for perspiration stains. Badly soiled surfaces may require sanding. Always use towels or mats on benches and floors.

8. Can I relocate the control knobs to a different position on the heater?

Answer: Yes, the controls can be relocated to the front or either side for easier operation. This should be done before mounting the heater to the wall:

1. Lay heater on its back
2. Remove control knobs by pulling straight off
3. Unsnap plastic label plates from electrical enclosure sides
4. Remove screws from left and right sides of electrical box and bottom cover
5. Remove painted trim piece from front of box
6. Slide bottom cover toward back of heater
7. Carefully move controls to new position
8. Reassemble in reverse order with original hardware
9. Use plastic label plates to cover unused mounting positions
10. Ensure no wires are damaged during the process

9. What are the proper sauna room construction requirements?

Answer: Key construction requirements include:

Door Safety:

• No permanent locking or latch systems
• Use only magnetic catches, friction catches, or spring/gravity loaded closures
• Door must always open outward
• Mount WARNING placard on door at eye level

Electrical:

• No electrical receptacles inside sauna room
• All heaters and controls must be grounded per NEC

Insulation & Structure:

• Minimum R12 insulation in 16″ on center 2×4 stud walls
• Recommended minimum flooring thickness of 5/8″
• Install CAUTION placard on interior wall above heater

Other Requirements:

• No showers in sauna room
• Fire sprinkler systems must be rated for sauna temperatures
• Light fixtures must be located to avoid burn hazards
• Never use wood stain, seal, or preservative inside sauna room

10. What ventilation is required for the sauna room?

Answer: Proper ventilation requires approximately 6 air changes per hour:

Vent Placement:

• Fresh air inlet: Directly below the heater in the sauna wall
• Air outlet: Lower than upper benches, as far as possible from heater, about 2 feet higher than fresh air inlet

Vent Sizing: Use these formulas to determine minimum vent opening:

• For rooms under 31 sq ft: V ≥ 9.3 square inches
• For rooms 31 sq ft or larger: V ≥ 0.3R square inches (where R = floor area in square feet)

Example: A 50 sq ft room would need minimum vent openings of 0.3 × 50 = 15 square inches each for inlet and outlet.

Proper ventilation helps maintain consistent temperatures and air quality while reducing temperature variations throughout the room.