Unigas HTLX92R Installation Manual page 20

PART II: INSTALLATION
Threaded train with MultiBloc MBE - Mounting
B
C
A
A
Mounting position MBE / VB / VD
Mounting VD-R & PS-...
ActuatorVD-R
VD-R + PS
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.
1. Insert studs A.
B
2. Insert seals B.
3. Insert studs C.
C
4. Tighten studs in accordance with section 8.
Ensure correct position of the seal!
5. Perform leak and functional tests after mounting.
A 6. Screws (4xM5x20) for VD assembly are supplied.
1. Mount flange into pipe systems. Use appropriate sealing agent.
2. Insert VB together with supplied O-rings.
Check current position of O-rings.
A
3. Tighten supplied screws (8xM8x30) in accordance with section 8.
4. Screws (4xM5x25) for VD assembly are supplied.
5. After installation, perform leakage and functional test.
6. Disassembly in reverse order.
VD-V
VB
ActuatorVD-V
M12 x 5 Pin
VDR
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)
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