7
which supply gas in the liquid phase are
prohibited.
• During the initial start-up of a brand new
appliance, small quantities of fumes and
a slight odor may occur briefly. When the
appliance is started up after a particularly
long period of non-use, there may be some
smoke and/or smell due to dust or dirt. It is
a good idea to allow the appliance to run at
maximum output for a few minutes and to
ensure that the area is well ventilated.
– For using the Combi furnace in hot water
mode (140°F (60°C)), let it heat up several
times.
• Hot air can be dangerous, especially for in-
fants, children, the elderly, or infirm. It can
cause burns:
– Ventilation air can reach 250°F (121°C) at
the warm air outlets. Always check the air
temperature before varying the air throttle
position (Fig.1 – H).
• Hot water can be dangerous, especially for
infants, children, the elderly, or infirm. It can
cause severe burns:
– Never actuate the pressure relief/drain
valve (Fig.1 – E) as long as the Combi fur-
nace is under water pressure and/or still
hot.
– Always check the water temperature be-
fore entering a shower or bath.
• How long before hot water causes skin
damage?
Temperature
°F (°C)
Time before skin becomes
scalded
155 (68) 1 second
148 (64) 2 seconds
140 (60) 5 seconds
133 (56) 15 seconds
127 (52) 1 minute
124 (51) 3 minutes
120 (48) 5 minutes
100 (37) safe bathing temperature
Source: Moritz, A.R. / Herriques, F.C.: Studies of thermal injuries: the
relative importance of time and surface temperature in causation of cu-
taneous burns
A. J. Pathol 1947; 23: 695 - 720
• Children up to 17 years of age as well as
people with physical, sensory, or mental
disabilities and/or people who are inexpe-
rienced or unknowledgeable may use the
Combi furnace only if they are supervised or
have been instructed in the safe use. They
must also understand the risks associated
with using it. Children must not play with the
Combi furnace.
Safe operation while moving the RV
• Shut OFF gas and the LPG tank when mov-
ing the RV. This disables all gas appliances
and pilot lights. Gas appliances must never
be operated while vehicle is in motion.
• Shut OFF the Combi furnace when refueling
or pumping gas.
• To avoid damage, make sure no spray water
enters the Combi furnace when cleaning the
RV, e.g., do not spray directly into the wall
cowl.
Safe handling of malfunctions
• Switch OFF the gas supply and the Combi
furnace if anything seems to be out of the
ordinary.
• Danger of fire or explosion when attempting
to use a flood-damaged Combi furnace or
if the RV has been involved in an accident!
A qualified service technician must inspect
the furnace. In the case of moisture damage,
the qualified service technician must replace
damaged gas controls, control system parts
and/or electrical parts, or provide a new
furnace.
• Only a qualified service technician may per-
form repairs.
• Have a qualified service technician immedi-
ately remedy any malfunctions.
– Remedy a malfunction yourself only if a
remedy is specified in the troubleshooting
chart in these operating instructions (refer
to “Troubleshooting” on page19).
• After any misfire, a qualified service techni-
cian must inspect the Combi furnace and the
exhaust tube.
Safe maintenance and repair
• Only a qualified service technician may clean
and maintain the furnace.
