This is a precision-built water heater,
especially designed for Hot Tubs. 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 externally.
One great advantage is that there will be more space in the
tub, making it possible to choose a smaller model.
Both the outer stove body and firebox are made of stainless
steel. The frame and doors are made of cast iron, which will
guarantee you years of trouble-free use. If there is a risk
of freezing, the heater must be emptied of water via the outlet
vent. The heat from the fire is efficiently transferred to
the water through a unique sophisticated construction, making
the entire firebox a heat-transferring surface. The total
heating efficiency is 14.9 kW.
Installation
The Chofu Wood 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.
Procedure:
Place the heater
on an even wood, brick or concrete surface. The heater
should be placed 10 cm lower than the Hot Tub to ensure
that the upper pipe is diagonal. This is important for
circulation and to ensure that the water drains out of
the heater during cold weather.
Drill a 60 mm hole
for the upper connection pipe (outflow) in the side of
the Hot Tub, 190 mm above the base. Drill a similar hole
at the base on the opposite side of the hot Tub for the
heater inlet pipe.
The straight connection,
including pipe, should be screwed tightly to the side
and the other connection to the base.
Connect the black
rubber pipes to the heater and pipes. It will be easier
to connect the pipes if they are oiled with cooking oil.
Tighten using the included hose clamps.
Operation
The Chofu Wood heater operates as a conventional wood stove,
achieving the fastest heating rate from dry wood. The firebox
is 46 cm long and 36 cm in diameter. The most efficient heating
comes from using dry wood, 40-43 cm long chopped into a thickness
of 4 X 4cm. One load burns for approximately 45 mins.
The Chofu Wood heater has a high and low-speed draft for controlling
the heating rate. It’s run with the draft wide open for fast
heating, and slowed down to maintain temperature once the
water is hot.
Chofu
Chimney Pipe holder
The chimney is firmly and easily secured to the burner as
is displayed on the picture.
Features
• Weather resistant construction
• Stove body of stainless steel
• Frame and doors of cast iron
• Connection parts to the Hot Tub
• Large fire place
• Vented smoke outlet for a secondary combustion
• Discharging vent for the water in order to protect the heater
from frost
Specifications
46 cm (height)
x 58 cm (length) x 41 cm (width)
Weight: 26 kg
Firebox: 46 x
36 x 36 cm
Heat exchanger
surface: 0.85 m²
Heating
The heating effect varies according to the quality of the
wood and how often you put in more wood. The approximate heating
effect for the Chofu Wood stove is 14.9 kW. The heating rate
of 1 000 litres of water is approximately 12° C per hour.
Hot
Tub model
Amount
of water
Start
temperature
Approx.
Heating time to 35 °C
HT150
1200
L
10
°C
2
hours
Note!
If seawater is used, rinse the heater with fresh water after
use! The same procedure is needed for chlorinated water or
if other chemicals are used.
Winter use
The heater should be drained after use if there is a risk
of freezing. The self circulation stops when the heater is
switched off and the small amount of water remaining in the
heater can easily freeze and break the heating system. If
water is left in the Hot Tub, it must still be possible to
close and empty the heater pipes and heater.
“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
