Low pressure regulator Type NDR 0515 and Type NDR 0516
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Screw connections
If connections leak, there is a danger of explosion, fire or suffocation!
Gas may escape if the product is turned.
Do not turn the product after it has been installed and the connections have been
tightened.
Tighten connections only when they are not pressurised.
Installing a gas filter
We recommend installation of a gas filter (Part no. 02 013 10) in front of the pressure
regulator.
LPG may contain foreign matter, such as dirt particles. From a certain size, these particles are
trapped in the filter. If no gas filter is installed, wear and tear of sensitive components is
increased and the complete LPG system may break down.
To install the connections, see CONNECTIONS in the assembly manual.
If compression/separation connectors are used in the building, a 1st stage regulator with
maximum 1 bar shut-off pressure of the safety overpressure shut-off valve (OPSO) must be
used.
Install the pressure regulator so that it is not under tension. Use the regulator support.
For outdoor applications, the product must be located or protected so that no
dripping water can enter. We recommend installation in under a hood and in a control cabinet,
respectively, or in a housing.
If the pressure regulator is installed in the flow direction downstream from another pressure
regulator, the supply pressure range must correspond to the regulated pressure range of the
first pressure regulator, with consideration of the pressure loss in the piping between the two
devices.
LEAK CHECK
Risk of burning or fire.
Serious burns to the skin or damage to property.
Do not use an open flame to check for function!
Leak check before start-up
Before start-up, check the product connections for leaks!
1. Close all shut-off fittings on the connected devices.
2. Slowly open the withdrawal valve or the gas cylinder valve(s).
3. If there is a safety device (e.g. EFV) between the tank and the connected device(s),
open this during the leak check.
4. Spray all connections with a foam producing substance according to EN 14291
(e.g. leak detector spray, Part no. 02 601 00).
5. Bubbles will form in the foam producing substance if there are any leaks.
