601
22
Honeywell VR 4600 N 4002 valve
with V7335A4014 Modureg
Gas pressure Adjustment
1 -
With the burner lit:
2 -
Connect suitable pressure gauge to burner test point "B", and then:
3 -
Disconnect air pressure compensation tube "H";
4 -
Disconnect the wires from coil "C" of the Modureg;
5 -
Remove protective cover "D";
6 -
Remove coil "C" by opening the coupling spring "I";
7 -
Screw the minimum adjustment screw "E" up tightly. (clockwise)
8 -
Unscrew lock nut "F" on sleeve "G";
9 -
Adjust maximum pressure by rotating sleeve "G"
clockwise to increase pressure and anticlockwise
to reduce pressure;
10 - Tighten sleeve lock but "F" then check that the
pressure is still at the required value;
11 - Adjust minimum pressure by rotating screw "E"
anticlockwise until the required value is reached;
12 - Fit coil "C" by sliding it into the sleeve, pushing and
rotating it lightly until the coupling spring "I" clicks
into place;
13 - Shut down and ignite the burner, checking that the
minimum pressure value is stable;
14 - Reconnect the wires to coil "C" of the Modureg;
15 - Reconnect air pressure compensation tube "H";
16 - Replace protective cover "D";
17 - Turn burner off, remove pressure gauge, close and
test, test point;
D
C
E
G
F
H
A
B
I
L
Key
A - Test point inlet pressure
B - Burner test point
C - Coil
D - Protective cover
E - Minimum adjustment screw
F - Lock nut
G - Sleeve
H - Pressure compensation tube
I - Coupling spring
L - Adapter (for only LPG version)
Summary of Contents for optima 601
Page 6: ...601 6 Boiler Flow Diagram Fig 2...
Page 17: ...601 17 Fixing points Lift here Fig 15 Fixing screws Fig 16 Fig 17...
Page 29: ...601 29...
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