V4730C/V8730C/V4734C · Edition 05.23
EN-10
10.5 Sensing tube VMU
Short Sensing Tube for VMU150/300/335kW Ven-
turi Mixing Units. Order No.: KTTBA001.
Long Sensing Tube for VMU500kW Venturi Mixing
Unit. Order No.: KTTBA002.
10.6 Manual Shut-Off Valve
Manual Shut-Off Valve Kits can be ordered to pro-
vide manual shut-off function.
Order no.: 50002653-001, for 1inch NPT or smaller
valves.
Order no.: 50002653-002, for 1-1/4inch NPT valve.
10.7 Pressure switch for gas C60VR4
The pressure switch for gas monitors the inlet pres-
sure or the intermediate pressure.
inlet pressure
intermediate pressure
Scope of delivery:
1xpressure switch for gas,
2xself-tapping retaining screws,
1xsealing ring,
1xprotection cap.
10.7.1 Pressure switch connection plug
Electrical connections Standard DIN plug connector
according DIN43650 (Form A)
-CO020014 (gray). Not included.
10.7.2 Adjust switching point
➔ The switching point is adjustable via hand wheel.
1
2
3
Type
Adjusting
range
(adjusting
tolerance =
±15% of the
scale value)
Mean
switching
differential at
min. and max.
setting
[mbar] ["WC] [mbar] ["WC]
C60VRT40040
5–40 2–16 1–2 0,4–1
➔ Deviation from the switching point during testing
pursuant to EN1854 Gas pressure switches:
±15%.
11 TECHNICAL DATA
The specifications in this section are related to the
Venturi Mixing Unit (VMU) and Combination Gas
Valve.
Valve and flange size:
Type Valve size Flange size
V4730C1006 1/2" 1/2"
V4730C1014 3/4" 3/4"
V4730C1022 1" 1"
V4730C1030 1" 1 1/4"
V4734C1002 1 1/4" 1 1/4"
V8730C1007 1/2" 1/2"
V8730C1015 3/4" 3/4"
V8730C1023 1" 1"
V8730C1031 1" 1 1/4"
Power consumption:
Type Voltage
V1 + V2,
total current
V4730C1006
V4730C1014
120V AC,
50/60Hz
0.26A
V4730C1022
V4730C1030
120V AC,
50/60Hz
0.46A
V4734C1002
120V AC,
50/60Hz
0.8A at
startup
0.26A
1)
V8730C1007
V8730C1015
24V AC,
50/60Hz
1.28A
V8730C1023
V8730C1031
24V AC,
50/60Hz
3.0A
1) First value during start up, second value
during normal operation