Installing A Water Pressure Regulator - Truma Combi eco Installation Instructions Manual

Installing a water pressure regulator

A water pressure regulator protects the ve-
hicle's water system against excessive supply
pressure, as could happen when the system is
connected to a city water supply. We recom-
mend the Truma water pressure regulator (not
included in scope of supply).
• The Truma water pressure regulator will
ensure that the water container will not
be filled with a pressure exceeding 30 psi
(2 bar).
• The water pressure regulator must be in-
stalled between the pressure relief/drain valve
and the city water connection or water pump
(Fig. 26 – 5).
• Install the water pressure regulator in the
cold water line.
• Insert the water pressure regulator in the
proper direction. Direction of flow is indi-
cated by arrow.
• Screw the connecting parts (not in scope of
delivery) with a nominal torque of
2.2 lb-ft (3 Nm) – hand-tight.
5
4
2
Fig. 29 Installation example
1 Truma water pressure regulator
2 1/2 in. PEX x 1/2 in. NPT female threaded
adapter
3 Cold water line inlet 1/2 in. CTS PEX tube
4 Cold water line outlet 1/2 in. CTS PEX tube
5 Crimp ring or clamp
2
1
3
5
1/2 in. NPT
Installing a non-return valve
Installing a non-return valve (not included in
scope of supply) between the outlet to the cold
water faucet and the pressure relief/drain valve
will prevent hot water from flowing back via the
cold water faucet.
• Install the non-return valve in the cold
water line.
• Insert the non-return valve in the proper
direction.
Fig. 30
21