resideo 45.900.444 Instructions

APPLICATION
The venturi manifold system is a gas/air mixing unit that allows
modulation of a premix burner with constant gas/air ratio down
to 20 % of maximum load. It is to be used in combination with
a fan and a Resideo 1:1 regulating gas valve.
The modulation is accomplished by changing the fan speed.
The outlet pressure of the gas valve is regulated to ambient
pressure by the gas valve.
The venturi generates a negative pressure against ambient by
which the gas is drawn through the gas valve outlet.
DESCRIPTION
The venturi manifold system is designed to be fitted in up to
eight positions on a specially adapted DC fan, using two
supplied M5 thread forming screws.
The manifold is sealed with a gasket that is supplied with the
assembly.
The gas valve can be fitted directly on the manifold assembly
in horizontal and vertical position with both the side outlet and
the end outlet.
Four screws and a special NBR gasket are used for the end
outlet version.
Three screws and a special sealing ring are used four the side
outlet version.
The venturi manifold can be trimmed to the correct gas/air
ratio by turning the throttle screw.
45.900.444-/45.900.446-
SPECIFICATIONS
Model:
Gas control
VK41..F/VK81..F: fast opening gas control with integrated
1 : 1 gas air regulation and venturi manifold
Venturi manifold 45.900.444- see table 1.
Venturi manifold 45.900.446- see table 2.
1)
Code Inlet and outlet code
x01 001
x02 002
x03 003
1)
Code Inlet and outlet code
*)
x50 050
x51 051
x52 052
x53 053
x55 055
1)
x = 0:with gasket and screws
x = 2:without gasket and screws
2)
The inlet and outlet codes are visible on the top and
bottom plastic parts.
3)
The reference load is the gross boiler load at which the
venturi has an overall pressure drop of 450 Pa.
*) Only suitable in specially adapted applications.
English .................................................................... Page 1
Deutsch ................................................................... Seite 3
Nederlands .......................................................Bladzijde 5
Italiano .................................................................. Pagina 7
Français ................................................................... Page 9
1
VENTURI MANIFOLD
INSTRUCTION SHEET
Table 1:
2)
Reference load
56 kW
40 kW
27 kW
Table 2:
2)
Reference load
82 kW
72 kW
46 kW
34 kW
16 kW
Contents
MU1R-9150 2004R8-NE
3)
3)