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10.4.2 Adjust switching point
➔ The switching point is adjustable via hand wheel.
1
2
Adjusting
(adjusting
type
tolerance =
± 15% of the
scale value)
[mbar] ["WC] [mbar] ["WC]
C60VR40017
2–17
C60VR40040
5–40
C60VR40110
30–110 12–44
➔ Deviation from the switching point during testing
pursuant to EN 1854 Gas pressure switches:
± 15%.
11 teCHnICAL DAtA
The specifications described in this chapter are
related to the main gas valve. The VR400/VR800
series must be used in combination with a burner
programmer.
Models:
type
Small body size models
VR415/VR815
VR420/VR820
VR425/VR825
VR432/VR832
Large body size models
VR434
1) All internal pipe thread according to ISO 7-1
Minimum regulating capacity:
VR415/VR815: 1 m
3
/hr
VR420/VR820: 1 m
3
/hr
VR425/VR825: 1,5 m
VR432/VR832: 1,5 m
VR434: 1,5 m
3
/hr
Maximum operating pressure
All models: 100 mbar,
except: VR425/432/825/832AB/AF/PB/PF: 70 mbar
(slow opening models DN25/DN32 with adjustable
outlet pressure 3–37 mbar).
VR434 can be applied to a maximum of 100 mbar,
but needs to be adjusted to nominal applied inlet
pressure.
3
Mean
range
switching
differential at
min. and max.
setting
0,8–
0,7–1,7
6,8
2–16
1–2
3–8
Pipe sizes
1)
DN 15
1/2"
DN 20
3/4"
DN 25
DN 32
1 1/4"
DN 32
1 1/4"
3
/hr
3
/hr
Torsion and bending stress
Pipe connections meet group 2 according to
EN 13611 requirements.
Valve Classification:
Class A + A according EN 161
Regulator Classification:
Class C according EN 88-1
Supply voltages:
Line voltage: 230 V AC, 50/60 Hz
Low voltage: 24V AC, 50/60 Hz
Electrical equipment:
DC current coils with combined rectifier inside the
cover.
Electrical connections:
Standard DIN plug connector according DIN 43650
Ambient temperature range:
-15 to +60°C (5 to +140 °F)
Storage temperature = transport temperature:
-20 to +40 °C (-4 to +104 °F).
Enclosure: IP 40
0,3–
Body material: Aluminum alloy die cast
0,8
Strainer:
0,4–1
Fine mesh screen (diameter 0,34 mm), AISI 303
0,8–
steel, serviceable after removing inlet flange screws.
3,2
Meets requirements for strainer according EN 161.
Power consumption:
type
VRx15/
VRx20
VRx15/
VRx20
VRx25/
VRx32
VRx25/
VRx32
VR434
1)
VR434
2)
1) At normal operation
2) At start up
1"
11.1 tightening torque
Recommended tightening torques for the connec-
tion parts:
screw type
Throttle screw
adjustment
Flanges
Pressure tap plug
Pressure switch
mounting
Pressure switch
cover
Inlet/outlet flange
screw
Retarder cap
EN-9
Voltage
V1
W
mA
230
15,9
70
24
15,2
640
230
24,1
106
24
30,9 1300 30,9 1300
230
11
76
230
49
220
tightening torque
max. 50 Ncm
min. 4 Ncm
max. 100 Ncm
min. 0.5 Ncm
max. 5 Nm
min. 2 Nm
2.5 ± 1.5 Nm
1.2 ± 0.2 Nm
4.3 ± 0.4 Nm
4.3 ± 0.4 Nm
V2
W
mA
15,9
70
15,2
640
24,1
106
11
76
49
220
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