Water Connection - Truma B 10 Instrucciones De Montaje

Water connection

All pressure and submergible pumps up to 2.8 bar are used
for operating the boiler and all mixed combination sets with or
without an electrical switch.
Fig. B
When using immersion pumps, a non-return valve (12 – not
included in the scope of supply) must be fitted between the
pump and the first branch point (arrow points in direction of
flow).
Fig. C
When using pressure pumps with high switching hysteresis,
hot water may flow back through the cold water tap. To pre-
vent the backflow, we recommend that a non-return valve
(6 – not included in the scope of supply) be fitted between the
outlet to the cold water tap and the drain valve.
Pressure and hot water-resistant hoses with an internal diam-
eter of 10 mm should be used for the boiler and the safety/
drain valve connections.
For non-flexible pipe routing (e.g. John Guest System) Truma
can supply the water connections (15 + 16), the safety/drain
valve (13) and a non-return valve (12 + 6) with a 12 mm diam-
eter inner connection as accessories.
If connecting to a central water supply (rural or city connec-
tion) or when using more powerful pumps, a pressure reducer
must be used which prevents pressures of greater than
2.8 bar occurring in the boiler.
Route the water hoses so that they are as short and
free of kinks as possible. All hose connections must be
secured using hose clamps (also for cold water)! Pressures
of up to 4.5 bar can occur in the safety/drain valve (also in
submergible pumps) because of the heat of the water and the
resulting expansion.
Hose clips (part no. 40712-01) are recommended for attach-
ing the hoses to the wall or the floor. If gas heating has been
installed, the water hoses and the hose clips can be laid on
the hot air pipes, which prevents frost.
In order to guarantee that the boiler is completely emp-
ty, the enclosed elbow with breather valve (fig. D: 15)
must be used for the hot water connection!
All hot water pipes should be routed in a descending
manner to the safety/drain valve! Otherwise no guar-
antee of protection from frost!
Installation of safety/drain valve
Fig. B + C
Install safety/drain valve (13) at a place which is easily acces-
sible, near the water heater. Drill hole with 18 mm diameter
and pass through discharge socket with hose (14). Fasten
safety/drain valve with 2 screws. The draining is to be directly
to the outside (apply splash guard, if necessary).
Water pipe routing
Fig. B + C
Connect cold water supply (24) to safety/drain valve (13).
Direction of flow is unimportant.
Fig. D
Screw elbow with integrated breather valve (15) to hot water
connection pipe (upper pipe) and elbow without breather
valve (16) to cold water connecting pipe (lower pipe).
Slide on nut (17), tension ring (18) and O-ring (19). Assemble
screw connector and connecting pipe and fasten together
using nut (17).
Slide ventilation hose with 11 mm outer diameter (20) onto
the breather valve hose nozzle (21) and route towards the out-
side. Do not allow the radius of the arc to be less than 40 mm.
Cut off the ventilation hose approx. 20 mm below the floor of
the vehicle at an angle of 45° to the direction of travel.
Fig. B + C
Produce hose connection (22) for cold water supply between
safety/drain valve (13) and elbow (16 – lower pipe) on boiler.
Route the hot water pipe (23) from the elbow with integrated
breather valve (15 – upper pipe) to the hot water consumers.
Installation of the control panels
When using control panels which are specific to the
vehicle or the manufacturer, the electrical connection
must be established in accordance with the Truma interface
descriptions. Any modification made to the Truma compo-
nents pertaining to this will lead to the invalidation of the
guarantee, as well as to the exclusion of any claims for liabil-
ity. The installer (manufacturer) is responsible for providing
instructions for use for the user as well as for identification
printing on the control panels!
When selecting the location, bear in mind that the control
panels must not be subjected to direct radiant heat. Length of
connection cable 2.5 m. If required, a cable extension of 5 m
can be supplied (part no. 70000-53500).
If flush mounting is not possible, Truma will supply an
on-surface frame (25 – part no. 40000-52600) as an
accessory on request.
Fig. E
The control panel for gas operation (26) and (if provided) the
control panel for electrical operation (27) should be fitted next
to one another if at all possible (distance between centres of
holes 66 mm).
In each case, drill a hole with diameter 55 mm (distance
between centres of holes 66 mm).
Plug the control panel cable (28) to the control panel for gas
operation (26) and then fit on the rear cover cap (29) as a
stress-relieving device.
Push the cable through to the rear and lay the connection
cable (28 + 30) to the boiler.
Lay the connection cable with the orange multipole connec-
tor (28) to the 12 V control electronics unit (fig. F – for connec-
tion see "Electrical connection 12 V").
Secure both control panels with 4 screws (31) each and fit the
cover frame (32) on them.
Truma offers side parts (32) in eight different colors for
finishing the cover frames (33) in a visually pleasing way.
Please ask your dealer.
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