Hot water system
80
Always use hoses, which are resistant to pressure (at least 4 bar) and hot
water (90 ºC).
For operating the heater it is possible to use all sanitary water pumps:
– creating a pressure up to 2.5 bar;
– closed when shut off;
– min. operating pressure 1 bar.
When using immersion pumps, the instructions from chapter 8.1, "Instal-
lation information for immersion pump systems" must also be observed.
Avoid the flow of water from the heater back into the vehicle’s fresh water
tank. Use one-way valves if required.
If the hot water temperature at the water outlets needs to be limited, use a
thermostatic mixing valve as an option (see Fig. 16).
When connecting to a central water supply (rural or city mains) or if using a
more powerful pump, a pressure reduction valve must always be installed to
prevent a pressure above 2.5 bar developing in the boiler.
Route water hoses as short as possible and free of kinks. All hose connections
must be secured in a way that they can withstand pressure and are watertight
(also cold water hoses)! The thermal expansion of the water can cause pres-
sures of up to 4 bar before the overpressure valve reacts.
It is recommended that all coolant hoses be mounted at a downhill slope to
the heater wherever possible. Route intake and outlet pipes connected to the
heater in such a way that there are no drain traps. So, if you drain the boiler,
you also drain the water lines.
The water lines must be routed inside the heating air intake hose. This will
avoid frozen water lines as long as the heater is operating in a proper mode
(see Operating Instructions).
The Dual Top rubber bellow must be used to connect the air intake hose to
the heater and secured with a clamp. See Fig. 18.
NOTE
Do not fasten the rubber bellow with screws which extend into the rubber
bellow and housing cover with inlet interfaces. This could block the fans.
Fig. 18: Cold (A) and hot water lines (B), air intake hose (C) and
Dual Top rubber bellow (D)
1
2
3
C
D
B
A
Содержание DUAL TOP RHA 100
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