ALMOST HEAVEN SAUNAS AHGSN4PRU Grayson Cedar 4-Person Electric Sauna Installation & Owner's Manual

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ALMOST HEAVEN SAUNAS AHGSN4PRU Grayson Cedar 4-Person Electric Sauna Installation & Owner's Manual | Manualzz

Grayson Sauna

Installation &

Owner’s Manual

Revised February 2017

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


Be sure to immediately check your boxes against your shipping list and bill of lading to make sure all boxes are there.

Examine for any damage and notify Almost Heaven Saunas if there needs to be a repair or replacement of damaged or missing materials.


All electrical wiring must be performed by A QUALIFIED LICENSED ELECTRICIAN . Because of the heat involved in the sauna, it is required that you use copper wire with 90ºC insulation. Do not use aluminum wire to make the connection.

Consult with an electrician so you can determine the requirements for your particular situation. All wiring must conform to all national, state and local codes and regulations and according to the instructions provided with the heater.


Your Grayson Indoor Sauna was specifically designed to utilize your existing floor. As such, assembly is made very simple since the entire sauna sits on pre fabricated rails and risers rather than on an integral floor platform. Your sauna can be assembled on any surface that is firm and flat, including concrete, ceramic, vinyl, laminate or tile. (Installation on a carpeted surface is not recommended.)


You should use two people for the assembly of the Grayson Sauna. The wall and roof sections are large and need two people to lift and hold in place during assembly.


You should have the following tools:

Grayson Sauna Packing List

Cordless drill for driving screws

1/8” drill bit


4 Floor Risers

4 Wall Support Rails

Stepladder or stool

Rubber Mallet

Wall Section A

Wall Section B

Wall Section C

Wall Section D

Wall Section E

Window Section F

Door Section H

Window Section G

Filler strip

Utility knife 3 pieces of wall trim

4 Roof Support Rails

2 Roof Sections4 pieces of roof trim

Upper Bench

Lower Bench

Back rest with pre mounted LED light

LED power supply

Hardware packet

Bucket with liner


Thermometer/ hygrometer

Door knob kit

Heater fence kit

Harvia 6.0kw heater

Box of sauna stones

Assembly manual packet


Assemble floor riser

Position wall support rails

1. Connect the 4 FLOOR RISERS

Your existing floor will serve as the floor for your sauna. The pre fabricated rails and risers will be placed on your existing floor and provide the structural support for the sauna room.The 4 floor risers are pre drilled and are assembled with 2” screws. Use a square to be sure the assembled frame is square.

NOTE: Be sure your surface is flat before you begin assembly.

2. Position the WALL SUPPORT RAILS

Place the 4 wall support rails with the groove facing up on top of the assembled floor riser.

Using 2” screws, Draw the corners tight by angle screwing the corners together.

NOTE: One side of each rail is pre drilled. After lining up the rails and prior to screwing them together, it is suggested that you pre drill through the factory drilled pilot hole into the second rail using a 1/8” drill bit. Drill about 1” into the second rail. This will prevent the possibility of strip ping or breaking the screw.

Angle screw corners to draw tight


Using 2” screws, attach the support rails to the floor riser; be sure that the groove is facing up.

Use 4 screws for each rail.

The combined riser and rails is now called the wall support section.

Fasten wall support rails to floor riser












The 8 wall sections, A– H, will be positioned in the grooves of the completed wall support section as shown.

4. Position WALL SECTION A

Position Wall Section A in the groove of the rail on the left rear side of the sauna according to the guide on ILLUSTRATION 1.

NOTE: Wall A should only go as far back in the groove as shown so that the back wall section B can overlap the edge of wall A.

Position Wall Section A

5. Position WALL SECTION B

Position Wall Section B on the left rear of the sauna according to ILLUSTRATION 1.

NOTE: Wall Section B will overlap Wall A.

Position Wall Section B

Attach Wall Sections A and B


6. Attach Wall Section B to Wall Section A

Using 2” screws, connect Wall Section B to Wall

Section A using the pre drilled holes.

NOTE: Be sure the wall edges and top edges align evenly.

Position Wall Section C

Position Wall Section D

Position Wall Section E

7. Position WALL SECTION C

Position Wall Section C on the right rear side of the sauna according to the guide on ILLUSTRA-


NOTE: Wall Section C will attach to Wall Section B by way of the tongue and groove profile but will not be fastened with screws.

8. Position WALL SECTION D

Position Wall Section D on the right rear side of the sauna according to the guide on ILLUSTRA-

TION 1. Using 2” screws and pre drilled holes, fasten Wall Section C to Wall Section D.

NOTE: As with step 6, be sure the wall edges and top edges align evenly.

9. Position WALL SECTION E

Position Wall Section E on the front right side of the sauna according to the guide on ILLUSTRA-


NOTE: Wall Section E will attach to Wall Section

D by way of the tongue and groove profile but will not be fastened with screws.


Position Window Section F on the right front of the sauna according to the guide on ILLUSTRA-

TION 1. Using 2” screws and pre drilled holes, fasten Window Section F to Wall Section E.

NOTE: As with step 6, be sure the wall edges and top edges align evenly.

Position Window Section F


Install filler strip to Window Section F

11. Install FILLER STRIP

Screw the filler strip to Window Section F to fill the gap between Window Sections F and Door

Section H. Trim pieces will later be installed over this joint.

NOTE: Due to the inherent variations in lumber dimensions, this gap may not be completely filled by the filler piece. This will be addressed later: provided trim pieces will cover any remaining openings.


Position Window Section G on the left front side of the sauna according to the guide on ILLUS-


NOTE: Window Section G will not attach to Wall

Section A.

Position Window Section G


13. Position DOOR SECTION H

Position Door Section H on the front left side of the sauna according to the guide on ILLUSTRA-

TION 1. Using 2” screws and pre drilled holes, fasten Door Section H to Window Section G.

NOTE: Window Section H will not attach to the filler strip previously attached to Window Section


Position Door Section H


Find the pre drilled wall connector. Place the wall connector on the top of the front wall edge, bridging Door Section H, the filler strip, and Window Section F. Screw it into place with 2” screws.

Attach wall connector



Assemble 4 roof support rails by angle screwing with 2” screws through the pre drilled holes.

NOTE: Be sure that the rails are square and level and that the screw head does not protrude into the groove.

Completed Roof Support

Attach Roof Support over walls

16. Attach ROOF SUPPORT over walls

Position the completed Roof Support over the wall sections. Once in place on all 4 sides, use 2” screws to attach Roof Support to wall sections.

Use 4 evenly spaced screws per rail.

NOTE: Tap the Roof Support firmly in place with a rubber mallet so wall sections are fully inserted into the groove before screwing into place.

17. Position ROOF SECTIONS

Place two Roof Sections on top of Roof Support, nesting the tongue of one section into the groove of the other. Measure around perimeter before fastening to be sure distance from edge is equal.

NOTE: Finished side of Roof Sections are to face the interior of the sauna with battens facing up.

Position Roof Sections


Using 2” screws, fasten Roof Sections to Roof

Support using pre drilled holes.

NOTE: Be sure to keep even distance from edge of Roof Section edges and Roof Support edges around perimeter of sauna as measured in step 17.

Fasten Roof Sections to Roof Support


Attach Roof Trim pieces

19. Attach TRIM

Find the package of 4 Roof Trim pieces and attach to the raw edge of the Roof Sections with finish nails. Find the package of 2 Wall Trim pieces and attach over the filler strip between sections F & H.

NOTE: The trim pieces are not pre drilled. You may install using finish nails.

20. Attach UPPER BENCH

Using 2” screws, attach the Upper Bench to the

Bench Supports using the pre drilled holes in the

Upper Bench.

NOTE: The Upper Bench is slightly wider than the Lower Bench.

Attach Upper Bench

21. Attach LOWER BENCH

Using 2” screws, attach the Lower Bench to the

Lower Bench Supports using the pre drilled holes in the Lower Bench.

NOTE: The Lower Bench will overlap two wall sections on each side of the sauna.

Attach Lower Bench

22. Attach VENT COVER

Screw the Vent Cover over the vents on Wall

Section B using the pre drilled hole.

NOTE: Tighten only enough so vent cover will turn freely over vents.


23. Measure Height for LONG BACK


Measure the desired position at which you will later install the

Back Rest above the

Upper Bench.

(Suggested: 8 12” above the bench and centered on the wall.)

24. Drill Hole for LIGHT


The LED lighting comes installed on the back of the Back

Rest. Find the cord coming from the light switch and drill a small hole in Wall Section C to insert the Light Cord through so it comes through to the outside of the sauna.

25. Attach LONG BACK


Use 2” screws and pre drilled holes to attach the

Long Back Rest to Wall

Sections B and C.

Cord from LED light


Use provided screws to position

Power Supply where it is most convenient for you on the outside of

Wall Section C.

Optional: Secure excess wire with zip tie or some other fastener as desired.



27. Connect to POWER SUPPLY

Plug the Cord into the Power Supply. Plug the Power Supply into any wall outlet, and flip the switch mounted on the back of the bench to operate the LED light.



Mount the heater as shown in the manufacturer's instructions. The heater should be mounted on Wall Section E, over the vents and 7” from the floor of the sauna. All the necessary hardware is supplied with the heater.

Drill a hole below and behind the heater to run the wire and/or conduit according to local electrical codes. The heater will be hard wired according to the specific wiring requirements for your heater.

Do not attempt to wire the heater yourself. Contact a licensed electrician in accordance with your local electrical codes. Heater brand may vary depending on where the sauna was purchased. Install sauna stones in accordance with heater manufacturer instructions.

Typical wiring requirements for distances of up to 30 feet from the breaker box are as follows:


6.0kw heaters require 10 2 w/ground, copper wire only, and 30amp non GFCI breaker.

8.0kw 8 2 w/ground, copper wire only, and 40amp non GFCI breaker.

29. Your fence kit will arrive banded with stretch wrap. It consists of four pieces, shown here.

30. Prop up the first pre assembled portion and attach the two long horizontal pieces.

Make sure the countersunk holes on the wall mounting bracket face inward.

31. Attach the final piece—the remaining pre assembled portion.

32. Position the fence around the heater and use the pre drilled holes to attach it to the wall.


Attach Door Knob on Door

33. Attach DOOR KNOB

Take the two sections of the door knob and insert the thread through the hole in the door. Tighten so that handles are snug to glass.

NOTE: Hand tighten only and be sure rubber gasket is between knob and glass.



After the sauna has been installed, sweep down the inside to remove any sawdust and wood shavings, and then vacuum completely. Using a damp cloth and warm water, wipe down the entire sauna including the benches to remove any remaining dirt, dust and debris. Rinse off the sauna stones and install them in or on the heater in accordance with the heater manufacturer’s instructions. Improper placement of heater stones can result in lower than desired heat temperatures. The first time you turn the heater on, set it to the maximum setting and operate it for about 30 minutes with the door propped open. Then close the door and allow your sauna to come up to the desired temperature.

Since you most likely will use your sauna as both a "wet sauna" and a "dry sauna", you should install the sauna stones that have been included with the heater, following the manufacturer’s instructions. These stones are necessary if water will be sprinkled on the heater to create the "wet sauna", and they will produce more consistent heating in the dry mode (without the use of water). It is common for a stone to occasionally crack during initial heating. If excess amounts of water are used during sauna, prop door open to let the humidity escape. Not much water is necessary to achieve a “wet sauna”.

The amount of ventilation in the sauna can be adjusted by means of the vent located toward the top of the sauna. It is important to have adequate fresh air flowing through the sauna, and this flow can be adjusted with the movable vent cover.


STEP #1 Set your heater so that the sauna room achieves the desired temperature, usually between 150º F and

170º F. As a novice, you should begin at the lower end of this range and work your way up to the higher temperatures over several sauna baths.

STEP #2 Remove all clothing (except maybe your swimsuit), eyeglasses, contact lenses, jewelry, etc. Take a quick shower with warm water and soap, or a quick dip in your hot tub.

STEP #3 Enter the sauna initially for about 5 to 15 minutes. Bring a towel into the sauna onto which you can sit or lay. Leave the sauna room once you have begun to perspire freely.

STEP #4 Now you may take a cold plunge in your swimming pool, shower or snow bank. After that, relax and cool down for another 10 to 20 minutes.

STEP #5 Re enter the sauna. On this return visit you may wish to sprinkle small amounts of water onto the stones creating bursts of steam. If the water spills through the heater and onto the floor, you are using too much, although this will not hurt the heater or the sauna.

STEP #6 After your final visit to the sauna, relax for at least 20 minutes. Shower with soap and warm water.

Finish your shower with cooler water to close the pores of your skin. Dress only after you have cooled down completely.

NOTE: Whatever your sauna regimen, it is important that you keep yourself hydrated by drinking plenty of water!



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