Saunatec 1108-46, 1108-60, 1108-24 manual Theory of Operation Sauna Temperature and Humidity Theory

Installation & Operation Instructions 5

SECTION 6: THEORY of OPERATION CONT.

Sauna Temperature and Humidity Theory:

The worldwide trend in sauna bathing is “lower temperatures and higher humidity”—much like ancient woodburning saunas. Old woodburning saunas (ancient “smoke saunas” or more recent saunas with woodburning stoves) had massive amounts of rocks, heated by burning wood, which in turn created a soft radiating heat, and very pleasant steam when water was sprinkled on the rocks. The Saunatonttu captures the essence of those wonderful saunas of old.

A large rock mass is the essential feature to create lower temperature/higher humidity saunas. The Saunatonttu’s combination of 200 pounds of rocks surrounded by high-tech super-insulation makes it possible. The large rock mass, superheated with minimal energy, is ready for sauna with the simple opening of the lid. Soft heat and wonderful steam are immediate.

This large rock mass concept is based on the “Rule of 200” (see Diagram 3) which illustrates how humidity and temperature interact. The “Rule of 200” suggests: “To the typical sauna bather, a sauna is most comfortable when the combination of degrees Fahrenheit plus Relative Humidity is 200 or less”.

Example: Room temperature is 145 F. 200 - 145 = 55

There could be up to 55% humidity in the room before it becomes uncomfortable for the user. If temperature goes up the humidity level will need to come down to be comfortable for the user.

DIAGRAM 3

Rule of 200 TM

	190
	180
	170
F	160
Temperature	150
	140
	130
	120
	110
	100
	90
	10	20	0	0	0	0	70	80	90		0
			3	4	5	6				0
										1

% of Humidity

4211-86-G 09-23-05 314 SKLH 20C