Harvia Heater Guide

Read this entire manual through to the end before proceeding with the installation.

Read this entire manual through to the end before proceeding with the installation.

Harvia Heater Instructions

Your Salus Sauna is paired with a genuine Finnish heater manufactured by Harvia Oy, the world leader in sauna heaters. Refer to this guide for installation and operation instructions. Please note, a licensed electrician should perform all electrical work, and Salus Saunas staff is available to assist with any questions you or your electrician may have. Please call us at 888-287-0111 for technical assistance.

Information for your electrician:

  • 4.5kW and 6.0kW KIP Heaters

    30-amp double pole breaker
    240 volts
    1 Phase
    10/2 wire. For 6.0kW heaters, an 8/2 wire is recommended for distances greater than 30’ from the power source • Do not use GFCI with this heater
    Use copper wire with 90C insulation
  • 8.0kW KIP Heaters

    • 40-amp double pole breaker
    • 240 volts
    • 1 Phase
    • 8/2 wire
    • Do not use GFCI with this heater
    • Use copper wire with 90C insulation

Positioning Your Heater

Unpack your heater, setting aside the trim pieces and bag with placards and screws (1).

Remove the hardware bag from the baggie with the safety placards (2), selecting the two longer lag screws (1.5”). You will secure these into the sauna wall so that 1⁄4” of the screw protrudes from the wall (3, 4).

a. For barrel saunas, the heater mounting holes are pre-drilled (5).

b. For indoor saunas, the screws should be mounted 22” to the floor and spaced 15.25” apart approximately centered above the vent holes (if present). It is fine that the heater is covering the holes as ventilation still occurs (6).

Hang the heater on the mounting screws to ensure it is level and that its base sits 5-7” on the floor of the sauna.

If these criteria are met, make a mark on the wall of the sauna directly behind one of the rubber gaskets on the lower back of the heater (7); this will be where the power enters the sauna. Take the heater o the wall and remove the rubber gasket, exposing the cutout. It does not matter which gasket is removed (8).

NOTE: While this location is the most common, the power can enter the sauna at any location. It is not recommended you use the pre-drilled vent holes as an entrance for the conduit.


Remove the two screws holding the stone guard in place. Pry the guard back and lift up to remove it. Clip the zip ties holding the metal sensor housing from the elements and set it aside for later installation (9 – 11).

Flip the heater on its back and remove the bottom cover. Locate the 4” temperature sensor, uncoiling the lament and wiring it out the small notch at the base of the heater. Set the sensor aside for later installation (12 – 14).

All wiring should be done by a licensed electrician.
Bore a hole at the mark you made in step 2, being sure it is wide enough to accommodate the wire (15). Feed the wire through this hole and then through the cutout at the base of the heater (16). To be sure the breaker is off, connect your heater to power according to the diagram below. The only connections that should be made are two hotlines to L1 and L2, and the ground line to the ground screw (17). Replace the bottom cover once the wiring is complete, and rehang the heater on the screws (18). Turn the breaker on.

NOTE: The power should not enter the heater through the cutout on the bottom cover – this cutout is to allow access to the high-limit reset button (19).


This heater is operated using two dials – the thermostat and the timer.
The thermostat (left) controls the temperature of the sauna. Set it according to your personal preference.
Timer (right) turns the heater on and off and has the ability to delay the start.
If the heater has power, you should hear a loud “clunk” at both the 0 and the large 1. In between these “clunks” is one hour of heat time.

To immediately turn the heater on, we recommend turning the dial past the two clunks to number 1 or 2. Turn the timer back until one loud “clunk” is heard, immediately stopping the turn. This will begin the one hour of heat time.
The heater will automatically shut o after one hour. You may have to restart your heater while you are in the sauna.
The smaller numbers 1-8 refer to the number of hours for the delay start. For example, if you turn the timer to 5, your heater will begin heating in ve hours.

With your sauna door open, turn on your heater for ve minutes to allow the non-toxic protective coating on the heating elements to“burn o ”. It is normal to see some light smoke as this coating burns off.


While the heater is cooling, rinse your sauna stones to prepare them for placement.

Place the smaller stones in between and around the three heating elements. The stones should touch the elements, but not bend them. Reserve the larger stones for placement on top of the heating elements, covering them completely. Replace the stone guard (21, 22).

NOTE: Packing stones in too tightly will restrict airflow and affect the efficiency of your heater. Loosely position the stones around and above the heating elements. It is common to have 5-10 stones left over.


Mount the sensor housing (the metal component zip-tied to the elements in step 1) vertically, at least 18” to the side of the heater and 18” below the highest point of the sauna. If it is too high on the wall or too close to the heater, it will sense that the sauna is hotter than it actually is, triggering a premature shut-off (23).

Place the sensor pin in the housing with the bulb upright and close the wings of the housing over the sensor pin (24, 25). Conceal the sensor housing and pin with the sensor cover and provided a screw (26).

Conceal the sensor wire with the grooved trim pieces from step 1 (27). You will likely have to cut several trim pieces to t the distance between your heater and the sensor pin. Mount them with the screws provided in the hardware baggie you removed in step 1.


Your KIP heater comes with a cedar heater guard. Use the provided hardware to assemble the fence components together (28-31), and secure it to the wall so that it evenly surrounds the heater (32). It should be positioned no higher than the exposed sauna stones.


Your sauna has been paired with an appropriately sized heater to consistently achieve temperatures of 180°-195°F. You should expect your sauna to be at a useable temperature in 45-60 minutes.

You have the option to pour water onto the stones to generate steam. Please note, little water is required to achieve this. For most sauna users, a ladle full of water is sufficient. If too much water is poured onto the stones, it will drip out the base of the heater and should be wiped up with a towel after the sauna session.

If you’d like to continue the sauna session after the automatic one-hour shutoff, simply restart the heater. Consult your sauna manual for the typical sauna routine, and enjoy!

If the sauna heater does not operate after the initial installation:
Check the breaker to be sure it is on
Verify with your electrician that 240 volts are reaching the heater
Double-check that the timer is being operated correctly (refer to instructions in step 5)

If the sauna heater operates but the sauna room does not come to temperature:

Verify the timer has not timed out. If it has, restart it.

Assess how the stones are placed around the heating elements. If they are packed too tightly, it will restrict air ow and affect the efficiency of your heater. Reposition the stones if needed.

Check the position of the temperature sensor (refer to step 7a). If it is too high in the sauna or too close to the heater, it will trigger a premature shutoff in your heater.

Press the high limit reset button below the heater – it may need resetting.

If none of the above recommendations get your heater working, please call Salus Saunas at 888-287-0111 to diagnose further.

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