1001

Honeywell VR 4605 NA 4003 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 in- crease 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 I 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

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)

H

A

L B

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Optima Company 1001 installation instructions Key, Coil

1001 specifications

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