4211-864 73-0118
TyloHeloInc 1/23/2018
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Installation
The BWT Laava heater is specifically designed for the BWT function. It comes with pre-installed water tanks and is factory
plumbed for Auto-fill function..
Please be sure to also look up the installation and safety distances in the user and installation manual for the Laava heater.
The BWT steam generator units work passively, meaning they do not have their own power supply; the water in the tanks is
heated by means of radiation from the heater elements.
The external water equalizing tank is for maintaining the water surface level inside the BWT tanks
.
The equalizing tank and the two BWT tanks are connected to each other and form a set of communicating vessels. The
equalizing tank, must be installed at the right height to ensure that the water surface levels of the BWT steam generator tanks
are at the optimal level at all times. The equalizing tank can be mounted inside the sauna next to the Laava heater, under the
bench or in an adjacent utility closet. If mounting inside the sauna, the tank will become very hot and should be protected to
prevent users from accidental touching.
The float inside the tank can be adjusted, which changes the amount of water in the tanks.
Note!
Do not install the equalizing tank or adjust the float so that water could overflow from the BWT tanks; the water surface
level must be 20 mm
(about ¾”) below the brim of the BWT tanks. The reference line on the equalizing tank must be at the
same height of the heater, and if this is not possible, adjust the float in the equalizing tank accordingly. For more information,
please refer to the images on the next page. Adjust water level in equalizing tank to prevent water from escaping out of the
two open holes on the back of the equalizing tank.
A 3/8” shut-off valve must be installed ahead of the equalizing tank fill valve as this ensures that the system can be shut down
for maintenance and flushing. This stopcock (shut-off valve) must always be open when the sauna is in use.
Drain valve.
If there is no floor drain under the drain cock (valve), we recommend installing a heat-resistant (silicone) hose or
copper pipe from the drain cock to the floor drain. To make flushing the tanks easier, the drain cock can be moved to the end
of the hose or pipe near the floor drain.
User and installation manual for
Auto-Fill
BWT
Laava Laava
