Circulated Air Intake; Room Temperature Sensor Installation; Selecting A Location; Assembly - Truma VarioHeat Einbauanweisung

Warm air distribution accessories
Acces- Icon Description
sories
VR 80 Warm air duct VR 80 (Ø 80 mm)
ÜR Warm air duct ÜR (Ø 65 mm)
Y 80 Y-piece 80,
Ø 80 mm inlet,
outlet 2x Ø 65 / 72 mm
Y Y-piece,
for ducts Ø 65 mm / 72 mm
ZRS Clamp ZRS, Ø 80 mm
EN End outlet with air throttle
1. The grid on the heater's warm air outlet must be removed if
warm air distribution is being used.
2. Only the duct VR 80 may be connected to the heater.
Figure 16
VR 80
≤ 100 cm
Figure 17 – Warm air system example Truma VarioHeat eco
In the case of the heater Truma VarioHeat comfort, the
warm air must be distributed to three lines.
VR 80
≤ 100 cm
Figure 18 – Warm air system example
Truma VarioHeat comfort
To avoid a build-up of heat, all warm air connections
must be connected.
Secure all duct connections with clips / self-tapping screws.
Fix ducts with clamps.
The warm air system is designed individually for each vehicle
type using the modular design principle. A wide range of ac-
cessories is available for this purpose (see brochure).
1
2
VR 80
Y 80
Y 80
ÜR Y
≤ 50 cm

Circulated air intake

The circulated air (U) is drawn back in by the heater. This must
have one large or several small openings with a total area of
at least 150 cm² between the living compartment (not the rear
storage space) and the installation compartment.
Circulated air intake with grid
If a grid (not supplied) is installed, the same requirements
must be complied with for drawing in air in terms of the
cross-sectional area through which flow occurs (150 cm²).
W
U
Figure 19 – Example, circulated air intake via grid

Room temperature sensor installation

The supplied room temperature sensor must always be
connected, otherwise the heater will switch to fault.

Selecting a location

When choosing a location, please note that the room temper-
ature sensor must not be subjected to direct heat radiation.
In order to obtain optimum room temperature control, install
room temperature sensor over the entrance door.
ÜR
Ensure that the sensor is always installed in a vertical
wall. There must be a free flow of interior air around the
sensor.
ÜR

Assembly

– Drill hole with a diameter of 10 mm.
– Lead the connector cable through the hole from the rear,
and connect the end of the cable to the sensor using an in-
sulated connector (polarity is irrelevant).
ÜR
– Slide in the room temperature sensor and route the end of
ÜR
the cable with the bushing X7 to the heater (lengthen the
cable to a maximum total length of 10 m with 2 x 0.5 mm²
ÜR
cable if necessary).
– Connect the room temperature sensor's cable to the heat-
er's cable harness. (see "Electrical connections").
Figure 20
VR 80
U
X7
10 mm
15