Operating Instructions; Control Panel; Room Thermostat - Truma Combi 4 E Instrucciones De Uso

Operating instructions

Always observe the operating instructions and "Impor-
tant operating notes" prior to starting! The vehicle owner
is responsible for the correct operation of the appliance.
The installer or vehicle owner must apply the yellow sticker
with the warning information, which is enclosed with the ap-
pliance, to a place in the vehicle where it is clearly visible to
all users (e.g. on the wardrobe door)! Ask Truma to send you
stickers, if necessary.
Before using for the first time, it is essential to flush the
entire water supply through with clean warm water. If
the heater is not being used, always drain the water contents
if there is a risk of frost. There shall be no claims under
guarantee for damage caused by frost!
Power selector switch
a
g
230 V~
a = Power selection rotary switch
b = Electric operation 230 V, 1800 W
c = Electric operation 230 V, 900 W
d = Gas operation
e = Mixed operation* (900 W gas and electrical operation)
f = Mixed operation* (1800 W gas and electrical operation)
g = Yellow LED on = "Electrical operation"
* Winter mode only!
In summer mode the unit automatically selects electric opera-
tion at the preselected electrical power of 900 W or 1800 W.
Switching on the electric heating elements as well
does not increase the maximum heating power.

Control panel

h
p, r
k
h = Rotary switch for room temperature (1 – 5)
k = green LED lit "Operation"
green LED blinking
"after-running" is active in order to reduce the unit's
temperature
l = Summer operation
(water temperature 40° C or 60° C)
m = Winter operation
(heating without water temperature monitoring
or with drained water system)
n = Winter operation
(heating with water temperature monitoring)
o = Rotary "Off" switch
p = yellow LED lit "Boiler heat-up phase"
r = red LED lit, red LED blinking "Failure"
The LEDs are visible only when the unit is switched on.
12
Combi E
b
c
d
e
f
Combi
60 °
l
40 °
o
m
n
60 °

Room thermostat

To measure the room temperature, an external room tempera-
ture sensor (s) is located in the vehicle. The location of the
sensor is determined individually by the vehicle manufacturer,
depending on the vehicle type; consult the operating instruc-
tions for your vehicle for further details.
s
s = Room temperature sensor
The thermostat setting on the control panel (1 – 5) must be
determined individually depending on the heating requirement
and the type of vehicle. For an average room temperature of
about 23° C, we recommend a thermostat setting of about 4.
FrostControl
(safety/drain valve)
FrostControl is a currentless safety/drain valve. When there
is a danger of frost, it automatically drains the contents of
the boiler through a drainage muff. If excessive pressure is
present in the system, pressure will be automatically intermit-
tently equalized through the pressure relief valve.
w
u
t = rotary switch position "Operation"
u = push button position "Closed"
w = push button position "Drain"
x = drainage muff (led outside through floor of vehicle)
Closing the drain valve
Check if the rotary switch is set to "Operation" (position t),
meaning that it is parallel to the water connection and
engaged.
Close the drain valve by activating the push button. The push
button must engage in position (u) "closed".
It can be manually closed with the push button (position u)
and then the boiler filled only when the temperature at the
drain valve is above approximately 7° C.
Truma can provide a heating element (part no. 70070-01) as
an accessory; it is inserted into FrostControl and warms it up
to about 10° C when Combi is switched on. This means that
the boiler can be filled after a shorter time, irrespective of the
temperature in the installation compartment.
Automatic opening of the drain valve
When the temperature is below approximately 3° C at the
drain valve, the drain valve will open automatically, the push
button moves out (position w) and the water in the boiler
drains out through the drainage muff (x).
t
x