PART II: INSTALLATION
19
Mounting VD-R & PS-...
The pilot gas train is already installed to the burner, the following connections must be executed:
connection from the stabiliser with filter to the gas supply network
Fig. 4 - pipe port (3) for connecting the pilot gas train to the valves group of the main gas train, for pilot gas train proving system
1. Gas pressure regulation is possible with VD-R and PS pressure sensor only.
WARNING! For US/CN installation, the output pressure must be monitoried by min. and max. pressure switches set
to +/- 20% of the setpoint.
2. Mounting on pipe. Sensor position: 5x DN according to MBE. Pipe fitting with female thread size ¼, mount sensor with
seal, observe torque.
3. The pressure sensor includes a vent limiter according to UL 353 and ANSI Z21.18/CSA 6.3. No venting required in loca-
tions where vent limiters are accepted by the jurisdiction.
4. Only PS pressure sensors specified by DUNGS are authorised to be connected to the VD-R‘s M12 interface.
5. Only PS cables specified by DUNGS are authorised to be used to connect the PS to the VD-R. Max. cable length 3 m.
Actuator
VD-R
The actuator
VD-V
does not need any adjustment (funzione
ON-OFF)
The actuator
VD-R
It must be combined with the
PS
sensor
(include regolatore di pressione)
The
PS sensor
chosen based on the necessary pressure
(there are 3 models)
Actuator
VD-V
M12 x 5 Pin
VD-R + PS
connection to the gas supply
network
3
to the burner
SIEMENS VGD40..
3
gas proving system connection (optional)
PMax according to the
governor lable
