7
EN2R-9004 0606R20-NE
SPECIFICATIONS
NOTE: Specifications for electrical modulation, electrical
high low, gas/air and other features are available on
request.
Models
See model number chart on page 31
Main gas connection
•
Standard see table 4, page 9.
•
Optional see table 5, page 9.
•
Side outlet can be fitted direct to a flanged burner manifold.
Inlet and outlet with
3
/
8
” or
1
/
2
” ISO 7-1 internal pipe thread
and straight or elbow flanges with
3
/
8
” or
1
/
2
” ISO 7-1 internal
pipe thread are according to the torsion and bending stress of
EN126 group 2
Connections with G
1
/
2
” or G
3
/
4
” external thread fitted with
nuts according to ISO 228-1 in combination with applicable
sealing(s) withstand the torsion and bending stress of EN 126
group 1
Ambient temperature
-15 ... 60°C
Humidity
95% RH max. at 40°C
Storage
- 30 ... 70°C
Pilot gas connection
Standard at end outlet: M8 x 1 for 4 mm outer diameter tubing.
Pressure feedback connection
The servo pressure regulator has an M5 thread connection for
pressure feedback.
Pressure feedback fittings for 4 or 6 mm silicon tube can be
mounted as option.
Dimensions
See page 4 and 5
Outlet pressure range for ON/OFF regulators
1.5 ... 20 mbar
2 ... 37 mbar
5 ... 50 mbar
Minimum regulation capacity
0.31 m
3
/h air
Minimum differential pressure
Maximum operating pressure
The P
max
indication on the housing of the gas control is the
maximum pressure at which it functions safely.
However, the maximum inlet pressure is limited by the
pressure range of the pressure regulator concerned.
(See table 2.)
*
This type can also be used for non regulation mode in LP
applications when pressure regulator adjustment screw is
clockwise turned down until it stops.
Versions up to 100 mbar maximum inlet pressure are available
on request
Mounting holes
Two mounting holes for thread forming M4 screws are located
on the bottom of the gas control.
For versions with external thread there are two additional
mounting holes for thread forming screws at the inlet side of
the gas control.
The four holes at inlet and outlet for mounting a flange on the
gas control are provided with M4 thread with min. 6 mm full
thread.
In case of side outlet the three holes for mounting the flange
are provided with M5 thread with a minimum of 6 mm full
thread.
Table 1: Minimum differential pressure
Model
∆
P min (mbar)
VK4105 2.5
VK4115
4
VK4125
4
Table 2: Operating pressure
Model
Pressure range
(mbar)
Maximum inlet
pressure (mbar)
with regulation
1.5 ... 20
2 ... 37
*
5 ... 50
*
30
45
60
without regulation
-
60
