Elster J125 Operating Instructions

J125
1½" and 2"
Commissioning Instructions
Fig. 1
Fig. 2
Fig. 3
Fig. 4
INSTALLATION CONDITIONS
Body pressure range: 0 - 8.6 Bar
Temperature range: -20ºC to +70 ºC
OPERATING INSTRUCTIONS
•
Ensure that this product is suitable for the chosen application.
•
Installation, adjustment and maintenance by authorised, trained personnel only.
•
When being fitted to an appliance, refer to the appliance manufacturers instructions.
•
For units not fitted with OPSS, ensure that the installation provides adequate
protection to prevent over pressurisation.
•
Traffic, wind and earthquake loadings should be considered when specifying the
installation.
•
The unit should be protected from the decomposition of unstable fluids.
Warning!
Incorrect installation, adjustment, modification, operation and maintenance may
cause injury or damage.
Read the instructions before use. This control must be installed in accordance with the rules in
force.
FITTING REGULATOR INTO PIPEWORK
1. The unit should not be installed in a corrosive environment.
2. The ambient temperature (surface temperature) should be within the limits
stated on the regulator catalogue.
3. Check the maximum allowable pressure on the regulator nameplate
against the installation specification.
4. Remove the protection plugs from inlet and outlet ports.
5. Ensure that installation pipework is thoroughly clean.
6. The direction of gas flow must be the same as the arrows on the regulator
body. See Fig. 1.
7. Install the regulator into pipework using jointing compound approved to
national standards.
8. In order to fit the regulator into confined spaces it may be necessary to rotate
the diaphragm case. This is achieved by slacking off the three set screws,
rotating the diaphragm case, and then re-tightening the set screws evenly.
See Fig. 2.
9. For units with no OPSS fitted it is advised that a slam shut device is fitted to
protect downstream equipment.
INSTALLATION OF VENT LINE.
1.
Remove clip and vent screen from regulator top cover.
2.
Connect the vent line (2"), using a jointing compound approved to national
standards, and lead to atmosphere in accordance with national standards.
Ensure that no water can penetrate vent pipeline. See Fig. 3.
3.
If the regulator is fitted with an internal relief valve, ensure that the vent line is
of sufficient diameter to carry gas vented by the relief valve to a safe outside
location. Reference to any national standard.
INSTALLATION OF IMPULSE LINE
1.
Remove the plastic protection plug.
2. Connect the impulse line (½"), using a jointing compound approved to
national standards, and lead to a point downstream not less than fifteen
times the nominal pipe diameter from the outlet. See Fig. 4.
FOR PRE-SET UNITS ONLY.
1. Turn off downstream valves.
2. Slowly turn on inlet supply.
3. If safety shut-off device is not fitted,
go to instruction 6.