Harvia Qube 12kW Black Sauna Heater

The Harvia Qube 12kW Black Sauna Heater Technical Specifications

2. The Professional/Commercial Range (18.0 kW – 36.0 kW)

Engineered for continuous duty in health clubs, hotels, and high-traffic public spas.

3. Shared Series Global Specifications

These specifications apply to every model in the Harvia Qube family and should be listed to reinforce technical authority.

• IP Rating: IPX4 (Splash-proof; certified for high-humidity sauna environments).
• Safety Distance (Ceiling): Minimum 1150 mm (for Home models) to 1380 mm (for Pro models) distance between the heater top and the sauna ceiling.
• Operating Temperature: Engineered for thermal stability up to 110°C.
• Stone Diameter: Recommended stone size Ø 5–10 cm (9-15kW) and Ø 10–15 cm (Pro models) for optimal airflow.
• Material Construction: Full Stainless Steel interior and exterior body with a triple-layer thermal safety shell.
• Control Requirement: All models require a Separate Control Unit (e.g., Harvia Xenio, C150, or CX170) and a Power Extension Unit for models exceeding 17kW.

The Harvia Qube Series: Family Buying Guide

The A–Z Protocol: From Order Confirmation to First Heat

The Harvia Qube family is the global benchmark for floor-standing sauna engineering. From the 12kW residential model to the 36kW commercial powerhouse, every unit features Triple-Shell Technology for cooler exterior surfaces and maximum safety.

1. The Selection Matrix (Volume & Operational Grade)

Choosing the correct Qube is a balance of room volume (m³) and intended usage intensity.

2. Logistics & The "Final Yard" Protocol

Because these units contain high-density stainless steel and sensitive electrical components, delivery is a managed event.

• Palletised Delivery: All Qube models are shipped via Tail-Lift Freight. The driver will deliver to the closest hard-standing surface (concrete/tarmac). They cannot move pallets over gravel, grass, or stairs.
• The Weight Reality:
• Standard (12-15kW): 45kg. Requires a 2-person lift.
• Pro (24-36kW): 82kg to 90kg. Requires 4 people or mechanical lifting aids to position.
• The 24-Hour Integrity Audit: You have a 24-hour window from the moment of signature to inspect the brushed steel casing and internal elements for transit damage. Once the "Final Yard" move or installation begins, shipping insurance for cosmetic damage expires.

3. Infrastructure: The "Safe-Side" Mandate

The Qube family consists of high-amperage mechanical components. The "First Heat" depends entirely on your electrical readiness.

• 3-Phase Requirement: Every model in this range requires a 3-Phase (400V 3N) supply.
• Commercial Power Extension: Models above 15kW (Pro series) require an additional Power Extension Unit (Contactor Box) to manage the extreme electrical load.
• The Electrician's Responsibility: You must appoint a qualified, registered electrician. They are responsible for calculating the Main Service Fuse capacity and specifying the correct Type B RCBO and SWA cable cross-section for your specific site distance.
• The Silicone Rule: All internal wiring from the wall to the heater must be SiHF-JB Silicone Cable (180°C). Standard PVC is a fire risk and voids the warranty.

4. Site Arrival to First Heat: The 5-Step Process

Step A: Positioning & Leveling

Place the unit on a non-combustible floor. Use a spanner to adjust the feet. If the Qube is not perfectly level, the elements may expand unevenly, leading to premature failure.

Step B: The Stone Prep

You must wash the 40kg–100kg of stones before loading. This removes dust that causes odors and element "baking."

Step C: The Convection Stack

Stack stones loosely around the elements. Air must flow from the floor, through the heater, and out the top. Packing stones too tightly "chokes" the heater and will burn out the elements.

Step D: Sensor Calibration

Your electrician must mount the temperature sensor exactly 150mm below the ceiling, directly above the heater. Incorrect placement results in "nuisance tripping."

Step E: The Commissioning Burn

Your first heat is a 30-minute "dry run" with the door open to vent manufacturing oils. Once complete, your A–Z journey is finished, and the sauna is ready for its first session.

5. Warranty & Professional Compliance

• Documentation: You must retain your Electrical Installation Certificate (EIC) to validate any future warranty claims.
• Commercial Stewardship: For Pro-grade units (24kW+), stones must be inspected and re-stacked every 3 months to ensure operational safety and airflow.

Manual Qube QU120E

Technical Specification: Electrical Supply

Infrastructure Standards for Harvia Qube Family (12kW – 36kW)

OFFICIAL NOTICE TO ELECTRICAL CONTRACTORS: The Harvia Qube range consists of high-output, 3-Phase mechanical heating elements. This document serves as a technical guideline for site preparation. You must perform your own load calculations based on the site's specific cable run, ambient temperature, and existing demand. All works must comply with current national wiring regulations.

1. Power Supply Architecture (3-Phase Only)

Every model in the 12kW–36kW Qube family requires a 400V 3N (3-Phase) supply. There is no single-phase bypass for these outputs.

2. Control Logic & Power Extension (The Contactor Rule)

To protect the sensitive electronics of the digital control hub, different models require different wiring topologies:

• 12.0kW – 15.0kW: These can typically be controlled directly by a Harvia Xenio CX170 or Fenix control unit, provided the total load does not exceed the unit’s rated capacity (17kW).
• 18.0kW – 36.0kW (Pro Series): These units MANDATORILY require a Power Extension Unit (e.g., Harvia LTY17 / LTY17C).
• The control panel manages the logic, but the high-amperage switching is handled by the contactor box.
• Note: The Pro 360 (36kW) may require multiple power extension units or a dedicated commercial-grade contactor panel to manage the >50A per phase draw.

3. The "Safe-Side" Wiring Mandate

• The Supply Feed: We recommend SWA (Steel Wire Armoured) cable from the consumer unit to the sauna’s local isolator. Your electrician must calculate the cross-sectional area (e.g., 10mm² or 16mm²) based on the Voltage Drop over the run.
• The High-Heat Zone: All wiring from the isolator/junction box to the heater terminals MUST be SiHF-JB Silicone Cable (rated to 180°C).
• Warning: Use of PVC or standard domestic cable within the sauna envelope will result in insulation failure and is a major fire hazard. Use of non-silicone cable voids the manufacturer’s warranty.

4. Safety Protection & Sensor Placement

• RCBO Selection: Use a dedicated 3-Phase Type B RCBO. Type B is specifically recommended to handle the cold-start resistance of the heating elements without nuisance tripping.
• Temperature Sensor (OBT): The sensor must be mounted on the wall directly above the center of the heater, 150mm below the ceiling.
• Commercial Note: For the Pro 360, ensure the sensor is not shielded by any architectural features, as incorrect readings at 36kW can lead to rapid overheating of the room.

5. Commissioning Requirements for Warranty Validation

To ensure the hardware warranty is activated:

1. Isolation: A local, lockable, weatherproof rotary isolator must be installed outside the sauna.
2. Earth Continuity: High-output elements must be verified for ground-fault integrity.
3. Certification: The owner must be provided with an Electrical Installation Certificate (EIC). This document is the only proof of "Professional Installation" accepted for Harvia warranty claims.

Delivery and Installation Manual: Harvia Qube Family

A-Z Engineering Standards for 12kW, 15kW, 24kW, and 36kW Models

The Harvia Qube is a floor-standing precision instrument. Its longevity is determined by two factors: Unrestricted Airflow and Electrical Integrity. This manual provides the mandatory protocol from the moment the pallet arrives to the first "löyly."

Phase 1: Logistics & The "Final Yard" Audit

The Qube family arrives as a high-density freight delivery.

• Kerbside Delivery: Delivery is via tail-lift vehicle to the nearest hard-standing surface. Pallet trucks cannot operate on gravel, grass, or inclines.
• The 24-Hour Inspection: You must unbox and audit the unit within 24 hours.
• Check: Brushed steel exterior for "transit-flex" or dents.
• Check: Heating elements for vertical alignment (they should not be touching each other).
• Check: Stone quantity matches your model (40kg for 12-15kW / 75kg-100kg for Pro 240-360).
• Manual Handling: 
• 12kW-15kW: 2-person lift minimum.
• 24kW-36kW: 4-person lift or mechanical sack-truck required. Do not lift by the outer decorative casing; lift from the structural base.

Phase 2: Mechanical Mounting & Positioning

• Surface Requirement: The Qube must sit on a level, non-combustible floor (Tile, Stone, or Concrete).
• The Leveling Protocol: Use the adjustable feet and a spirit level. If the unit is tilted, the heating elements will expand unevenly under 400V load, leading to "element-clashing" and short circuits.
• Safety Distances (Mandatory):
• 12kW-15kW: 50mm clearance on all sides.
• 24kW-36kW: 150mm clearance on all sides.
• Vertical: 1.15m to 1.4m clear air space to the ceiling (refer to your specific model URL for exact ceiling height).

Phase 3: The "Convection" Stone Protocol

How you load the stones defines the "First Heat" success.

1. The Wash: Wash all stones in clean water. Dust from the quarry will bake onto the elements, creating a permanent odor and reducing heat transfer.
2. The "Loose Stack": Place stones between and around the elements.
• DO NOT wedge, force, or pack the stones.
• THE GOAL: You want "convection chimneys." Air must be able to flow freely from the floor, past the elements, and out the top.
• Overpacking: Packing stones too tightly "chokes" the heater, causing the elements to overheat and burn out within months. This is the #1 cause of voided warranties.

Phase 4: The Electrician’s Mandate (3-Phase Only)

All electrical work must be performed by a registered professional.

• The Supply: 400V 3N (3-Phase) is required for this entire family.
• The Silicone Rule: The connection from the wall/isolator to the heater terminals MUST be SiHF-JB Silicone Cable (180°C). Standard PVC is a fire risk.
• Control & Power: 
• 12kW-15kW: Connects to a standard Harvia Control Hub.
• 24kW-36kW: Requires a Power Extension/Contactor Box to manage the high-amperage switching.
• Sensor Logic: Mount the OBT/Temperature sensor 150mm below the ceiling, directly above the heater center-line.

Phase 5: Commissioning the "First Heat"

1. The Dry Run: Turn the heater to 80°C for 30 minutes with the sauna door open.
2. The Venting: Manufacturing oils and residual dust will burn off. Do not occupy the sauna during this phase.
3. The Sign-Off: Once the test is complete, the electrician must issue the Electrical Installation Certificate (EIC).

Responsibility Matrix

Harvia Qube Family: Warranty & Care Covenant

Warranty Standards for 12kW, 15kW, 24kW, and 36kW Systems

This Covenant defines the terms of the manufacturer’s warranty for the Harvia Qube Family. Because these units operate at high voltages and extreme temperatures, the warranty is a Technical Partnership. Validity is strictly contingent upon the professional installation and maintenance standards outlined below.

1. The "Operational Grade" Terms

The duration of the warranty is determined by the environment of use, not the model of the heater:

• Private/Domestic Use: 24 Months (2 Years).
• Commercial/Public Use: 6 Months.
• Definition: Any installation in a gym, spa, hotel, or shared community space is classified as Commercial. The high-duty cycle of these environments causes faster wear on heating elements.

2. The "Electrical Shield" (Mandatory for Activation)

To activate the warranty, the following electrical evidence must be retained by the owner:

• The EIC Mandate: A copy of the Electrical Installation Certificate (EIC) issued by a registered 3-Phase certified electrician.
• The Component Rule: Use of non-Harvia power extension units or third-party contactors on models above 15kW voids the warranty.
• The Silicone Clause: The use of PVC or standard domestic cabling within the sauna envelope terminates the warranty immediately. Only SiHF-JB Silicone Cable (180°C) is approved for internal connections.

3. Mechanical Stewardship & Element Protection

Heating elements are the "heart" of the Qube. Their failure is almost always linked to airflow or water quality.

• The Airflow Audit: Elements that have buckled, melted, or "shorted" due to compacted stone stacking are not covered. Air must flow freely to cool the elements.
• The Stone Purity Rule: Stones must be washed before installation. Dust buildup causes "hot spots" on the elements.
• Löyly Water Quality: Only fresh domestic water may be used. Use of chlorinated pool water, salt water, or "fragrance-heavy" solutions causes pitting and rapid corrosion, which is classified as user-inflicted damage.

4. Commercial Maintenance Mandate

For units installed in commercial settings (Pro 240 / Pro 360), the owner must demonstrate a maintenance log:

• Quarterly Stone Service: In a commercial setting, stones must be removed, the heater vacuumed, and stones re-stacked every 3 months.
• Element Inspection: Check for "hot-spotting" or element displacement during every stone service. Failure to maintain the stone stack leads to "thermal runaway," which is not a manufacturing defect.

5. The "24-Hour" Transit Rule

• Cosmetic Integrity: Any dents to the brushed black steel casing or damage to the internal element frame must be reported with photographic evidence within 24 hours of delivery.
• Exclusion: Once the unit has been moved into the sauna or the electrician has begun the "Live" connection, claims for transit-related cosmetic damage will be rejected.

6. Limitation of Liability

The warranty covers the repair or replacement of the Harvia hardware only. It does not cover:

• Costs of electrician labor for removal or re-installation.
• Loss of business revenue due to sauna downtime.
• Damage caused by power surges or "brownouts" (common in commercial industrial estates).

Returns and Refund Policy

At any time after submitting your order online or by telephone and up to 14 days following the date you receive the items from us (“Cooling Off Period”) you decide you no longer want an item, we will be happy to exchange the item or give you a full refund provided that you notify our After Sales team at any time before the Cooling Off Period ends by post or email that you wish to cancel the item and, where the item has already been delivered, it must be returned to us ‘as new’ – unused and complete in the original packaging.

If at the time of cancellation the item has already been dispatched or delivered to you, you must return the cancelled item to us (at your own cost) in accordance with our returns policy. Please package the item securely and return it to us together with the original delivery note.

If the goods are faulty, please see the defective or damaged goods below. Please contact our After Sales team for more information.

The Consumer Contracts Regulations require refunds to be made within 14 days of the date the customer sends notice of cancellation.

If you are purchasing an item from Balance Recovery by distance means (whether online or via telephone) as a business and not as a consumer, items may only be returned for a refund at Balance Recovery’s discretion; non-stock items are subject to a restocking charge of 25% of the relevant order value. Custom-manufactured items may not be refundable.

If you wish to cancel an item you have ordered, please notify our After-Sales team by email. As we process orders immediately, it may not always be possible to prevent an item from being dispatched.

We will refund the reasonable costs you incur in returning the following items to us:

• Items we delivered to you in error
• Items which are faulty or damaged upon delivery
• Items which are substitutes for items originally ordered

We ask that you send us copies of receipts for such costs.

In all other circumstances (including where you cancel an item during the Cooling-Off Period), you will be responsible for the cost of returning the item to us.

Suppose we do not receive the original item back from you, together with the original delivery note. In that case, we may arrange for the collection of the item from the delivery address and may recover from you the charges (not exceeding direct costs) we incur in doing so. Until you return items to us, you are responsible for their safekeeping and taking reasonable care of them. We do not accept liability for packages damaged during transit back to us. It is your responsibility to wrap items adequately to prevent damage.

Faulty or Damaged Items

• If the item/s you ordered are damaged or have parts missing upon receipt, provided you inform our After Sales team within 48 hours of receiving the items (supplying them with the reference details shown on the delivery documentation together with details of the damage or missing items and pictures of any damage), we will offer a replacement or a refund.
• If the item(s) you ordered are faulty upon receipt or fail within the first 30 days, we will collect the defective item(s) and offer a replacement or a refund.
• We will typically collect damaged or faulty items within the first 30 days after receipt of the goods. Please contact our After Sales team before returning damaged or defective goods. Refunds will be credited only to the payment method used for the original purchase.

Manual Qube QU120E