Chofu
Propane gas heater –Efficient heating in a simple way
The Chofu Propane gas heater is a highly efficient water
heater especially designed for Hot Tubs. The water is
self circulating, using the "thermosiphon" principle.
Hot water rises and creates low pressure, which sucks
the water from below. This eliminates the need for a
circulation pump and electricity, making it possible
to heat the water with the heater placed on the outside.
One great advantage is that there will be more space
in the tub, making it possible to choose a smaller model.
An external heater is also preferable when considering
safety aspects. The gas heater is virtually maintenance
free since it has no loose parts and needs no electricity.
Since the construction has been designed for outdoor
use, it should not be used indoors. It is weather resistant
and can stand outside uncovered even when it is raining.
It can also be covered. If covered, make sure there
is enough air circulation and follow the recommended
measurements. See the picture below left.
Operation
The heater starts manually with an automatic ignition
switch. The main switch should be outside the tub. The
switch should be placed so that it is easy to reach
from both inside and outside the tub. When the water
has reached the right temperature it is easy to switch
off the heater, and if the water needs heating up, it
is easy to restart the heater. You must be able to do
this without getting out of the tub.
Features
Works
without electricity
Manual
“remote control” with ignition switch
Weather
proof housing
Safety
shut-off for over-heating.
Size
43 cm (height) x 43 cm (length) x 25 cm (width), weight
8.5 kg
Heating
The effect of the Chofu Propane heater is approximately
14 kW. The heating speed is approximately 10° C per
hour for 1 000 litres of water. The gas use is 1 kg
per hour.
Installation OBSERVE! If you are the least bit unsure how to
go about assembling and installting the gasheater
you should let a professional handle it.
The Chofu Propane gas heater is connected to a Hot
Tub with the connection kit provided. This consists
of a 50 mm PVC plastic pipe, flexible rubber pipes
including clamps, one straight connection to the side
of the hot tub, and one 90° connection for the base.
See pictures below.
Procedure:
The heater is placed on a level foundation of wood,
brick or cement. The heater should be placed at
the same height as the hot tub. This is important
for the circulation and so that the water can be
drained out of the heater during cold weather.
For the upper connection pipe (outlet) a 60 mm hole
is drilled in the side of the hot tub, 320 mm from
the surface the tub is standing on. On the bottom
on the opposite side a similar hole (inlet) is made
for the water coming from the heater.
The straight connection including pipes is screwed
into the side and the curved one into the bottom.
Use a sealing compound
The black neoprene tubes should be connected to
the heater. If the tubes are lubed with a bit of
food oil they are easier to connect. Secure using
the included clamps.
The
heater is connected to a gas connection equipped
with a 30 mbar pressure reducer.
For information
on the Propane heater ignition click
here
(Note this will open in a new window)
For information
on the remote control click here
(Note this will open in a new window)
“There
is no need to go to India or anywhere else to find peace.
You will find that deep place of silence right in your room,
your garden or even your bathtub” Elisabeth Kubler-Ross
The Chofu Propane gas heater is a highly efficient water
heater especially designed for Hot Tubs. The water is
self circulating, using the "thermosiphon" principle.
Hot water rises and creates low pressure, which sucks
the water from below. This eliminates the need for a
circulation pump and electricity, making it possible
to heat the water with the heater placed on the outside.
One great advantage is that there will be more space
in the tub, making it possible to choose a smaller model.
