LG WH20S F5 Betriebsanleitung Seite 17

Connecting T&P Relief Valve
Discharge Pipe
WARNING
!
The pressure rating of the relief valve
must not exceed 1 MPa, the maximum
working pressure of the water heater as
specified on the data plate.
WARNING
!
DO NOT connect any valve or other
restriction to the T&P plumbing. DO
NOT connect the T&P plumbing to the
condensate plumbing. It must be
directly piped to an adequate open
drain.
Install T&P Relief Valve discharge pipe
according to local codes and the following
instructions.
- The inside diameter of the discharge pipe
must be at least 3/4".
- The discharge pipe must be approved for hot
water distribution and withstand 100 °C
without distortion.
- The end of the discharge pipe should not be
threaded or concealed and should be
protected from freezing.
- Do not insert or install any type of valve,
restriction, or reducer coupling in the
discharge pipe.
1
Apply Teflon tape on the G end to prevent
leaking.
2
Attach the discharge pipe to outlet of the
T&P relief valve. The discharge pipe must
pitch downward from the valve to allow
complete drainage of both T&P relief valve
and discharge pipe.
3
The end of the discharge pipe must be
piped to an adequate open drain.
* The water may drip from the discharge pipe
of the pressure-relief device and that this
pipe must be left open to the atmosphere.
* The pressure-relief device is to be operated
regularly to remove lime deposits and to
verify that it is not blocked.
* A discharge pipe connected to the pressure-
relief device is to be installed in a
continuously downward direction and in a
frost-free environment.
EN
17