Sauna Electrician Guides Hub
NEC 680 Reference
Harvia Club Heavy Commercial Electric Sauna Heater: Electrician's Installation & Rough-In Guide
EpicSauna Technical Team
Official Hardware Catalog
View Product →
Harvia Club Heavy Commercial Electric Sauna Heater
Sourcing the Harvia Club Heavy Commercial Electric Sauna Heater for your project? Browse available kW configurations, authentic vulcanite & olivine sauna stones, and official Harvia control packages at EpicSauna.
1. Quick Reference Electrical Specification Matrix
The Harvia Club series is the commercial industry workhorse designed for non-stop, continuous-use commercial operations in resorts, health clubs, and high-occupancy fitness centers.
Table 1A: 208V 3-Phase Specifications (Standard Commercial 3PH)
| Heater Model | Power Rating (kW) | Operating Voltage | Current Draw (Amps per Phase) | Recommended 3-Pole Circuit Breaker | Minimum Copper Wire Gauge (AWG 90°C) | Sauna Room Volume Range | Required Stone Mass | Dimensions (W × D × H) | Total Loaded Weight |
|---|---|---|---|---|---|---|---|---|---|
| Club K10G | 9.8–10.0 kW | 208 V (3-Phase, 3~) | 27.3 A | 35 A or 40 A (3-Pole) | 8 AWG (Copper) | 388 – 600 cu. ft. (11–17 m³) | 132 lbs (60 kg / 3 boxes) | 19.9" × 16.9" × 27.6" (505 × 430 × 700 mm) | ~190 lbs (86 kg) |
| Club K12.5G | 12.3–12.5 kW | 208 V (3-Phase, 3~) | 34.1 A | 45 A or 50 A (3-Pole) | 8 AWG (Copper) | 494 – 742 cu. ft. (14–21 m³) | 132 lbs (60 kg / 3 boxes) | 19.9" × 16.9" × 27.6" (505 × 430 × 700 mm) | ~190 lbs (86 kg) |
| Club K15G | 14.4–15.0 kW | 208 V (3-Phase, 3~) | 40.0 A | 50 A (3-Pole) | 6 AWG (Copper) | 600 – 989 cu. ft. (17–28 m³) | 132 lbs (60 kg / 3 boxes) | 19.9" × 16.9" × 27.6" (505 × 430 × 700 mm) | ~190 lbs (86 kg) |
Source: Harvia Club Commercial Manual & IDM Col 29–36.
Table 1B: 240V Single-Phase Specifications (High-Amperage 1PH)
| Heater Model | Power Rating (kW) | Operating Voltage | Current Draw (Amps) | Recommended Circuit Breaker Setup | Minimum Copper Wire Gauge (AWG 90°C) | Sauna Room Volume Range |
|---|---|---|---|---|---|---|
| Club K10G | 10.0 kW | 240 V (1PH / 2~) | 41.7 A | 60 A (2-Pole) | 6 AWG (Copper) | 388 – 600 cu. ft. (11–17 m³) |
| Club K12.5G | 12.6 kW | 240 V (1PH / 2~) | 52.7 A | 70 A (or Dual 40A + 30A) | 4 AWG (or Dual 8 + 10 AWG) | 494 – 742 cu. ft. (14–21 m³) |
| Club K15G | 14.8–15.0 kW | 240 V (1PH / 2~) | 61.7 A | 80 A (or Dual 50A + 40A) | 4 AWG (or Dual 6 + 8 AWG) | 600 – 989 cu. ft. (17–28 m³) |
Dual-Circuit Mandate
Dual-Circuit Feed Option Directives
For retrofits or commercial buildings with standard 240V single-phase panels, Club K12.5G and K15G allow splitting the internal element bank into dual branch circuits. Both circuits must originate from the same panel and be equipped with an approved simultaneous disconnect (handle tie) per NEC 422.31. When wiring as a single high-amperage circuit (70A or 80A), ensure the external contactor and lugs are rated for the total ampacity and conductor size.
2. Critical Electrician Directives & Code Mandates
Commercial Code Directive
Commercial Electrical Code Requirement
All wiring must be installed by a licensed electrical contractor conforming to NEC Article 680 (Saunas), Article 422 (Appliances), and local commercial safety ordinances.
A. Supply Conductor Standards & Conduit Entry
- Conductor Material: Copper conductors only, rated minimum 90°C (194°F) (THHN/THWN).
- Conduit Rough-In: Terminate wiring using flexible metallic or liquid-tight conduit through the knockout located on the lower electrical service base.
- Neutral Conductor: No neutral wire is connected to the heating elements.
B. GFCI Breaker Policy
- Manufacturer Recommendation: Connect to a dedicated standard 3-pole (or 2-pole) thermal-magnetic breaker without GFCI. Standard Class A GFCI breakers (4–6 mA) are prone to nuisance tripping during startup due to minor atmospheric moisture absorption in the large stone/element bank, which evaporates within 1 hour of heating.
3. Clearances & Spatial Layout (Safety Distances)
Table 2: Minimum Safety Clearances to Combustibles
| Parameter | Club K10G | Club K12.5G | Club K15G |
|---|---|---|---|
| Minimum Distance to Side Wall | 4.0 in (100 mm) | 4.7 in (120 mm) | 6.3 in (160 mm) |
| Minimum Clearance to Ceiling | 55.0 in (1,400 mm) above stone surface | 55.0 in (1,400 mm) above stone surface | 55.0 in (1,400 mm) above stone surface |
| Minimum Distance to Front Guard Rail | 4.0 in (100 mm) | 4.7 in (120 mm) | 6.3 in (160 mm) |
| Finished Floor Requirement | Floor-standing on supplied heavy-duty base | Floor-standing on supplied heavy-duty base | Floor-standing on supplied heavy-duty base |
| Minimum Ceiling Height | 82.7 in (2,100 mm) | 82.7 in (2,100 mm) | 82.7 in (2,100 mm) |
Safety Clearances & Spatial Elevation Schematic
COMMERCIAL CEILING (Min Height: 82.7 in / 2100 mm)
=============================================================================
^ ^
| Min. 55.0 in (1400 mm) |
| Clearance Above Stone Surface |
v |
+---------------+ |
| ############# | <--- Heavy Commercial Stones (132 lbs / 3 boxes) |
| ############# | |
| HARVIA CLUB | |
| (10 - 15 kW) | <--- Continuous Commercial Workhorse Chassis |
| | |
+---------------+ |
| | | | |
+-+ +-+ <--- Heavy-Duty Floor Base (Lagged to Subfloor) |
=====================================================================+
| <--- Side Wall Clearance: Min. 4.0 in (K10G) / 4.7 in (K12.5G) / 6.3 in (K15G)
| <--- Front Rail Clearance: Min. 4.0 in (K10G) / 4.7 in (K12.5G) / 6.3 in (K15G)4. Floor Mounting & Structural Backing
The loaded operating weight of the Harvia Club with 132 lbs of stones is ~190 lbs (86 kg).
- Heavy-Duty Commercial Base: Stands on a reinforced steel floor-mounting chassis.
- Direct Floor Attachment: The chassis secures directly to the floor using the included lag bolts.
- Pre-Fabricated Solid Timber Cabins: Screws anchor directly into solid 1.5"+ cedar or spruce floor timbers.
- Commercial Tile/Concrete: Anchor with concrete masonry screws (Tapcons) or heavy-duty lag shields.
5. Control System Architecture (Harvia Xenio CX45 Commercial)
The Harvia Club is operated by the Harvia Xenio CX45 Commercial Contactor Unit.
208V Commercial 3-Phase Control Architecture
[Commercial 208V 3-Phase Main Panel]
208V 3-Pole Circuit Breaker (35A, 45A, or 50A)
|
v (Line In: Phase A, Phase B, Phase C + Ground)
[Harvia Xenio CX45 Commercial Power Unit] <==== (Low-Voltage Sensor Wire) ====> [Temperature Sensor w/ Thermal Fuse]
| (Over heater ceiling per manual)
|
+==== (Data Cable) ====> [Xenio Touchscreen Control Panel]
| (Mounted outside sauna room)
v (Load Out: Terminals U, V, W + Ground)
[Harvia Club Commercial Terminal Chamber]
- Terminal U: Line 1
- Terminal V: Line 2
- Terminal W: Line 3
- Ground Lug: Equipment Grounding Conductor240V Single-Phase Dual-Feed Supply Architecture
[240V Single-Phase Single or Dual-Feed Setup]
Option A (Single Feed): 240V 2-Pole Breaker (60A / 70A / 80A) ====> Lugs 1 & 2 (Heavy Copper Run)
Option B (Dual Feed): 2-Pole Breaker 1 (40A / 50A) + 2-Pole Breaker 2 (30A / 40A) w/ Handle Tie
|
v
[Harvia Club Terminal Blocks (Strapped for 240V 1PH)]
- L1 (Terminal 1)
- L2 (Terminal 2)
- Ground Lug (Bonded to Commercial Steel Frame)6. Sizing Formula & Commercial Room Applications
- Formula: Room Volume (cu. ft.) + (3.3 cu. ft. × Sq. Ft. Uninsulated Glass/Tile).
- Commercial Applications:
- Club K10G (388–600 cu. ft.): Hotel and fitness center saunas (6–10 persons).
- Club K12.5G (494–742 cu. ft.): Mid-size commercial wellness suites (10–14 persons).
- Club K15G (600–989 cu. ft.): Large community health clubs and spa facilities (up to 1,000 cu. ft.) requiring continuous 12+ hour daily operation.
Frequently Asked Questions (Electrician & Rough-In Knowledge Base)
How many boxes of stones does the Harvia Club require?
The Harvia Club holds 132 lbs (60 kg) of stones, supplied as 3 boxes of 44 lb stones (2"–4" diameter).
---
8. Official Manual Audit & Compliance Verification
| Parameter / Directive | Manual Sourced Value | Verified Manual Location | Audit Status |
|---|---|---|---|
| Club K10G Electrical Data | 10 kW @ 208V 3PH (27.3A / 40A Breaker) / 240V 1PH (41.7A / 60A) | Page 4, Table 1 & IDM Col 29-34 | AUDITED & VERIFIED |
| Club K12.5G Electrical Data | 12.5 kW @ 208V 3PH (34.1A / 45A Breaker) / 240V 1PH (52.7A / 70A) | Page 4, Table 1 & IDM Col 29-34 | AUDITED & VERIFIED |
| Club K15G Electrical Data | 15 kW @ 208V 3PH (40.0A / 50A Breaker) / 240V 1PH (61.7A / 80A) | Page 4, Table 1 & IDM Col 29-34 | AUDITED & VERIFIED |
| Side Wall Clearance | 4.0 in (K10G), 4.7 in (K12.5G), 6.3 in (K15G) | Page 3, Safety Clearances | AUDITED & VERIFIED |
| Ceiling Clearance | Min. 55.0 in (1,400 mm) | Page 3, Safety Clearances | AUDITED & VERIFIED |
| Stone Quantity | 132 lbs (60 kg / 3 boxes) | Page 4 & IDM Col 36 | AUDITED & VERIFIED |
| Conductor Rating | Copper Only, Min 90°C THHN | Page 4, Wiring Instructions | AUDITED & VERIFIED |
| Mounting Style | Heavy-duty commercial floor chassis | Page 3, Installation Section | AUDITED & VERIFIED |
Need Technical Rough-In Assistance or Commercial Project Support?
EpicSauna is an authorized distributor of Harvia, HUUM, and Saunum sauna heaters. Our technical support team works directly with licensed electrical contractors, commercial builders, and architects across North America.