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3 InstALLAtIon
CAUtIon
Incorrect installation
Please observe the following to ensure that the
unit is not damaged during installation and oper-
ation:
– Sealing material and dirt, e.g. thread cuttings,
must not be allowed to get into the valve
housing.
– Dropping the device can cause permanent
damage. In this event, replace the entire device
and associated modules before use.
– Turn off gas supply before installation.
– Disconnect power supply to the valve actuator
before beginning the installation to prevent
electrical shock and damage to the equipment.
– Do not remove the seal over valve inlet and
outlet, until ready to connect piping.
– The valve must be installed so that the arrow on
the valve points in the direction of the gas flow
(gas pressure helps to close the valve).
– Screws which are protected against unauthor-
ised removal must not be loosened. This will
invalidate the warranty!
3.1 Installation position
Solenoid actuator in the vertical upright position or
tilted up to the horizontal, not upside down.
Gas valves with integrated gas/air 1:1: The factory
settings are made in a horizontal installation position.
A vertical installation may require readjustments.
The distance between the gas valve and the wall/
ground, must be at least 30 cm.
➔ The valve can be mounted up to ±90 degrees
from this position without affecting the fuel/air
metering at medium and high firing rates (3000
to 5000 rpm of the blower), but at lower firing
rates (1000 rpm) the fuel might be reduced up
to 10% when the valve is not mounted horizontal.
To counter this, the low fire gas flow may be
carefully field adjusted for non-horizontal mount-
ing as described below.
3.2 Install valve
1 Take care that dirt does not enter the gas valve
during handling.
2 Remove flanges from the valve (if factory
mounted).
3 Use a sound taper fitting with thread according
to ISO 7-1 or new, properly reamed pipe free
from swarf.
4 Apply a moderate amount of good quality thread
compound to the pipe for fitting only, leaving the
two end threads bare, PTFE tape may be used
as an alternative.
5 Screw the flanges onto the pipes.
6 Ensure that the inlet and outlet flanges are in line
and separate from each other enough to allow
the valve to be mounted between the flanges
without damaging the "O"-ring.
7 Place the "O"-ring. If necessary grease it slightly
to keep it in place.
8 Mount the gas valve between the flanges using
the bolts for each flange.
9 Complete the electrical connections as
instructed in the Electrical Connection section.
10 Complete the electrical connections as
instructed in the wiring section.
3.3 Connections
There are 1/8" G pressure taps at the flanges.
At the main body flange connections (1/8" G) are
provided to mount either an:
– pressure switches (min. or max.)
– two connections for Intermittent Pilot (valves
opened independently)
3.3.1 Pressure tap points
The following pressures can be measured:
1 Inlet pressure
2 Inlet pressure
3 Interim pressure - unreguleted (pressure between
the two shut-off valves)
4 Outlet pressure - reguleted
P Pilot gas pressure
➔ The corresponding numbers can be found on the
sides of the valve. Pressure points 1 and 4 are
located on top of the flanges.
➔ A pressure switch can be mounted to 2, P or 3.
(C60VR: Only 2 and 3)
1
Pressure tap points for small body size models.
1
Pressure tap points for large body size model
EN-3
3
2
P
2
P
3
2
P
3
3
2
P
3
3
4
4
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