INSTRUCTION SHEET
VK41..R/VK81..R series
GAS CONTROLS WITH INTEGRATED GAS/AIR MODULE
FOR COMBINED VALVE AND IGNITION SYSTEM
EN1R--9137 9808R6--NE
APPLICATION
The VK41..R/VK81..R series gas controls with integrated
gas/air module have been developed for application in
domestic appliances with premix or atmospheric burners and
automatic ignition.
The gas/air module is designed to amplify and modulate the
outlet gas pressure by means of a pneumatic link between the
gas and air flow by using the air pressure difference.
For this system, the VK41..R series gas controls have been
designed to have the S4565 series ignition control attached
directly onto the valve.
The combined system then provides programmed safe light
up, flame supervision and regulation of gas flow to the main
burner of the appliance.
The VK41..R/VK81..R series are used in a system context in
conjunction with fan control and a direct spark ignition (DBI)
control.
The VK41..R/VK81..R series are approved in accordance with
european standards.
DESCRIPTION
VK41..R/VK81..R combined gas controls perform all the
functions required to safely regulate gas flow to the main
burner of domestic central heating equipment, warm air
furnaces, back boilers and water heaters.
VK41..R/VK81..R combined gas controls hold a first electric
on/off direct operator for opening the safety valve of class A or
class B according to EN161 and a second electric on/off
servo operator of class B or class C to EN 161.
VK41..R/VK81..R combined gas controls comply with the
additional requirement for class J valves according to EN 161.
The pressure regulator is in accordance with class B
requirement of EN 88.
VK41..R/VK81..R combined gas controls can handle the three
gas families, manufactured gas, natural gas and LP gas.
SPECIFICATIONS
Models
VK41.. series:
line voltage, two automatic shut off valves
for direct spark ignition (DBI) or hot surface
ignition (HSI) applications.
VK81.. series:
low voltage, two automatic shut off valves
for direct spark ignition (DBI) or hot surface
ignition (HSI) applications.
Suffix letter
R: fast opening, with integrated gas/air module
Pipe connection
Straight or elbow flanges.
Torsion and bending stress according to EN 126 group 2
Ambient temperature
0 ... 60
_
C for combined valve and ignition control
0 ... 70
_
C for stand alone valve
Dimensions
See fig. 1.
Pressure regulation function
Class B according to EN 88
Air pressure connections
M11 x 1
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